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src/auth.js

+import m from 'mithril';
+import axios from 'axios';
+import ClientOAuth2 from 'client-oauth2';
+import { Snackbar } from 'polythene-mithril';
+// eslint-disable-next-line import/extensions
+import { apiUrl, ownUrl, oAuthID } from 'networkConfig';
+import * as localStorage from './localStorage';
+
+// Object which stores the current login-state
+const APISession = {
+  authenticated: false,
+  token: '',
+  userID: null,
+  schema: null,
+  rights: {
+    users: [],
+    joboffers: [],
+    studydocuments: [],
+  },
+};
+
+if (!APISession.schema) {
+  m.request(`${apiUrl}/docs/api-docs`).then((schema) => { APISession.schema = schema; });
+}
+
+const amivapi = axios.create({
+  baseURL: apiUrl,
+  headers: { 'Content-Type': 'application/json' },
+  validateStatus: () => true,
+});
+
+// OAuth Handler
+const oauth = new ClientOAuth2({
+  clientId: oAuthID,
+  authorizationUri: `${apiUrl}/oauth`,
+  redirectUri: `${ownUrl}/oauthcallback`,
+});
+
+function resetSession() {
+  APISession.authenticated = false;
+  APISession.token = '';
+  localStorage.remove('token');
+  window.location.replace(oauth.token.getUri());
+}
+
+function checkToken(token) {
+  // check if a token is still valid
+  return new Promise((resolve, reject) => {
+    amivapi.get(`sessions/${token}`, {
+      headers: { 'Content-Type': 'application/json', Authorization: token },
+    }).then((response) => {
+      if (response.status === 200) resolve(response.data);
+      else reject();
+    }).catch(reject);
+  });
+}
+
+export function checkAuthenticated() {
+  // return a promise that resolves always, with a bool that shows whether
+  // the user is authenticated
+  return new Promise((resolve) => {
+    if (APISession.authenticated) resolve();
+    else {
+      // let's see if we have a stored token
+      const token = localStorage.get('token');
+      if (token !== '') {
+        // check of token is valid
+        checkToken(token).then((session) => {
+          APISession.token = token;
+          APISession.authenticated = true;
+          APISession.userID = session.user;
+          amivapi.get('/', {
+            headers: { 'Content-Type': 'application/json', Authorization: token },
+          }).then((response) => {
+            const rights = {};
+            response.data._links.child.forEach(({ href, methods }) => {
+              rights[href] = methods;
+            });
+            APISession.rights = rights;
+            resolve();
+          });
+        }).catch(resetSession);
+      } else resetSession();
+    }
+  });
+}
+
+export function getSession() {
+  // Promise resolves with authenticated axios-session or fails
+  return new Promise((resolve) => {
+    checkAuthenticated().then(() => {
+      const authenticatedSession = axios.create({
+        baseURL: apiUrl,
+        headers: {
+          'Content-Type': 'application/json',
+          Authorization: APISession.token,
+        },
+        validateStatus: () => true,
+      });
+      resolve(authenticatedSession);
+    }).catch(resetSession);
+  });
+}
+
+export function deleteSession() {
+  return new Promise((resolve, reject) => {
+    getSession().then((api) => {
+      api.get(`sessions/${APISession.token}`).then((response) => {
+        if (response.status === 200) {
+          api.delete(
+            `sessions/${response.data._id}`,
+            { headers: { 'If-Match': response.data._etag } },
+          ).then((deleteResponse) => {
+            if (deleteResponse.status === 204) {
+              resetSession();
+              resolve(deleteResponse.data);
+            } else reject();
+          }).catch(reject);
+        } else reject();
+      }).catch(reject);
+    });
+  });
+}
+
+export function getCurrentUser() {
+  return APISession.userID;
+}
+
+export function getUserRights() {
+  return APISession.rights;
+}
+
+export function getSchema() {
+  return APISession.schema;
+}
+
+// Mapper for resource vs schema-object names
+const objectNameForResource = {
+  users: 'User',
+  groupmemberships: 'Group Membership',
+  groups: 'Group',
+  eventsignups: 'Event Signup',
+  events: 'Event',
+  studydocuments: 'Study Document',
+  joboffers: 'Job Offer',
+  blacklist: 'Blacklist',
+  sessions: 'Session',
+};
+
+export class ResourceHandler {
+  /* Handler to get and manipulate resource items
+   *
+   * resource: String of the resource to accessm e,g, 'events'
+   * searchKeys: keys in the resource item on which to perform search, i.e.
+   *   when search is set, any of these keys may match the search pattern
+   *   E.g. for an event, this may be ['title_de', 'title_en', 'location']
+   */
+  constructor(resource, searchKeys = []) {
+    // backwards compatibiliity, should be removed in future
+    // eslint-disable-next-line no-param-reassign
+    if (!searchKeys) searchKeys = [];
+
+    this.resource = resource;
+    this.rights = [];
+    this.schema = JSON.parse(JSON.stringify(getSchema().components.schemas[
+      objectNameForResource[this.resource]]));
+    // readOnly fields should be removed before patch
+    this.noPatchKeys = Object.keys(this.schema.properties).filter(
+      key => this.schema.properties[key].readOnly,
+    );
+    // any field that is a string can be searched
+    const possibleSearchKeys = Object.keys(this.schema.properties).filter((key) => {
+      const field = this.schema.properties[key];
+      return field.type === 'string' && field.format !== 'objectid'
+        && field.format !== 'date-time' && !key.startsWith('_');
+    });
+    // special case for users, we don't allow reverse search by legi or rfid
+    if (resource === 'users') this.searchKeys = ['firstname', 'lastname', 'nethz'];
+    else this.searchKeys = searchKeys.length === 0 ? possibleSearchKeys : searchKeys;
+    checkAuthenticated().then(() => {
+      // again special case for users
+      if (resource === 'users' && APISession.isUserAdmin) {
+        this.searchKeys = searchKeys.length === 0 ? possibleSearchKeys : searchKeys;
+      }
+    });
+  }
+
+  /*
+   * query is a dictionary of different queries
+   * Additional to anything specified from eve
+   * (http://python-eve.org/features.html#filtering)
+   * we support the key `search`, which is translated into a `where` filter
+   */
+  buildQuerystring(query) {
+    const queryKeys = Object.keys(query);
+
+    if (queryKeys.length === 0) return '';
+
+    const fullQuery = {};
+
+    if ('search' in query && query.search && query.search.length > 0
+        && this.searchKeys.length !== 0) {
+      // translate search into where, we just look if any field contains search
+      // The search-string may match any of the keys in the object specified in the
+      // constructor
+      let searchQuery;
+      if (query.search.split(' ').length > 1) {
+        searchQuery = {
+          $and: query.search.split(' ').map(searchPhrase => ({
+            $or: this.searchKeys.map((key) => {
+              const fieldQuery = {};
+              fieldQuery[key] = {
+                $regex: `${searchPhrase}`,
+                $options: 'i',
+              };
+              return fieldQuery;
+            }),
+          })),
+        };
+      } else {
+        searchQuery = {
+          $or: this.searchKeys.map((key) => {
+            const fieldQuery = {};
+            fieldQuery[key] = {
+              $regex: `${query.search}`,
+              $options: 'i',
+            };
+            return fieldQuery;
+          }),
+        };
+      }
+
+
+      // if there exists already a where-filter, AND them together
+      if ('where' in query) {
+        fullQuery.where = JSON.stringify({ $and: [searchQuery, query.where] });
+      } else {
+        fullQuery.where = JSON.stringify(searchQuery);
+      }
+    } else if ('where' in query) {
+      fullQuery.where = JSON.stringify(query.where);
+    }
+
+    // add all other keys
+    queryKeys.filter(key => (key !== 'where' && key !== 'search'))
+      .forEach((key) => { fullQuery[key] = JSON.stringify(query[key]); });
+
+    // now we can acutally build the query string
+    const maxResults = 50; // max_results for setting the page size of the return.
+    return `?${m.buildQueryString(fullQuery)}&max_results=${maxResults}`;
+  }
+
+  networkError(e) {
+    // eslint-disable-next-line no-console
+    console.log(e);
+    Snackbar.show({ title: 'Network error, try again.', style: { color: 'red' } });
+  }
+
+  // in future, we may communicate based on the data available
+  // therefore, require data already here
+  // eslint-disable-next-line no-unused-vars
+  error422(data) {
+    Snackbar.show({ title: 'Errors in object, please fix.' });
+  }
+
+  successful(title) {
+    Snackbar.show({ title, style: { color: 'green' } });
+  }
+
+  get(query) {
+    return new Promise((resolve, reject) => {
+      getSession().then((api) => {
+        let url = this.resource;
+        if (Object.keys(query).length > 0) url += this.buildQuerystring(query);
+        api.get(url).then((response) => {
+          if (response.status >= 400) {
+            Snackbar.show({ title: response.data, style: { color: 'red' } });
+            if (response.status === 401) resetSession();
+            reject();
+          } else {
+            this.rights = response.data._links.self.methods;
+            resolve(response.data);
+          }
+        }).catch((e) => {
+          this.networkError(e);
+          reject(e);
+        });
+      });
+    });
+  }
+
+  getItem(id, embedded = {}) {
+    return new Promise((resolve, reject) => {
+      getSession().then((api) => {
+        let url = `${this.resource}/${id}`;
+        // in case embedded is specified, append to url
+        if (Object.keys(embedded).length > 0) {
+          url += `?${m.buildQueryString({
+            embedded: JSON.stringify(embedded),
+          })}`;
+        }
+        api.get(url).then((response) => {
+          if (response.status === 404) {
+            m.route.set('/404');
+          } else if (response.status >= 400) {
+            Snackbar.show({ title: response.data, style: { color: 'red' } });
+            if (response.status === 401) resetSession();
+            reject();
+          } else {
+            resolve(response.data);
+          }
+        }).catch((e) => {
+          this.networkError(e);
+          reject(e);
+        });
+      });
+    });
+  }
+
+  post(item) {
+    return new Promise((resolve, reject) => {
+      getSession().then((api) => {
+        api.post(this.resource, item).then((response) => {
+          if (response.code === 201) {
+            this.successful('Creation successful.');
+            resolve({});
+          } else if (response.status === 422) {
+            this.error422(response.data);
+            reject(response.data);
+          } else if (response.status >= 400) {
+            Snackbar.show({ title: response.data, style: { color: 'red' } });
+            if (response.status === 401) resetSession();
+            reject();
+          } else {
+            resolve(response.data);
+          }
+        }).catch((e) => {
+          this.networkError(e);
+          reject(e);
+        });
+      });
+    });
+  }
+
+  patch(item) {
+    const isFormData = item instanceof FormData;
+    let patchInfo = {};
+    if (isFormData) patchInfo = { id: item.get('_id'), etag: item.get('_etag') };
+    else patchInfo = { id: item._id, etag: item._etag };
+
+    return new Promise((resolve, reject) => {
+      getSession().then((api) => {
+        let submitData = item;
+        if (!isFormData) submitData = Object.assign({}, item);
+        // not all fields in the item can be patched. We filter out the fields
+        // we are allowed to send
+        this.noPatchKeys.forEach((key) => {
+          if (isFormData) submitData.delete(key);
+          else delete submitData[key];
+        });
+        api.patch(`${this.resource}/${patchInfo.id}`, submitData, {
+          headers: { 'If-Match': patchInfo.etag },
+        }).then((response) => {
+          if (response.status === 422) {
+            this.error422(response.data);
+            reject(response.data);
+          } else if (response.status >= 400) {
+            Snackbar.show({ title: response.data, style: { color: 'red' } });
+            if (response.status === 401) resetSession();
+            reject();
+          } else {
+            this.successful('Change successful.');
+            resolve(response.data);
+          }
+        }).catch((e) => {
+          this.networkError(e);
+          reject(e);
+        });
+      });
+    });
+  }
+
+  delete(item) {
+    return new Promise((resolve, reject) => {
+      getSession().then((api) => {
+        api.delete(`${this.resource}/${item._id}`, {
+          headers: { 'If-Match': item._etag },
+        }).then((response) => {
+          if (response.status >= 400) {
+            Snackbar.show({ title: response.data, style: { color: 'red' } });
+            if (response.status === 401) resetSession();
+            reject();
+          } else {
+            this.successful('Delete successful.');
+            resolve();
+          }
+        }).catch((e) => {
+          this.networkError(e);
+          reject(e);
+        });
+      });
+    });
+  }
+}
+
+export class OauthRedirect {
+  view() {
+    oauth.token.getToken(m.route.get()).then((auth) => {
+      localStorage.set('token', auth.accessToken);
+      checkAuthenticated().then(() => {
+        // checkAuthenticated will check whetehr the token is valid
+        // and store all relevant session info for easy access
+        m.route.set('/');
+      }).catch(resetSession);
+    });
+    return 'redirecting...';
+  }
+}

src/base64.js

+/* eslint-disable operator-assignment */
+/* eslint-disable no-restricted-globals */
+/* eslint-disable no-bitwise */
+/* eslint-disable no-plusplus */
+/* eslint-disable no-param-reassign */
+/**
+ *
+ *  Base64 encode / decode
+ *  http://www.webtoolkit.info
+ *
+ * */
+const Base64 = {
+  // private property
+  _keyStr: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',
+
+  // public method for encoding
+  encode(input) {
+    let output = '';
+    let chr1; let chr2; let chr3; let enc1; let enc2; let enc3; let enc4;
+    let i = 0;
+
+    input = Base64._utf8_encode(input);
+
+    while (i < input.length) {
+      chr1 = input.charCodeAt(i++);
+      chr2 = input.charCodeAt(i++);
+      chr3 = input.charCodeAt(i++);
+
+      enc1 = chr1 >> 2;
+      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
+      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
+      enc4 = chr3 & 63;
+
+      if (isNaN(chr2)) {
+        enc3 = 64;
+        enc4 = 64;
+      } else if (isNaN(chr3)) {
+        enc4 = 64;
+      }
+
+      output = output
+        + this._keyStr.charAt(enc1)
+        + this._keyStr.charAt(enc2)
+        + this._keyStr.charAt(enc3)
+        + this._keyStr.charAt(enc4);
+    } // Whend
+
+    return output;
+  }, // End Function encode
+
+  // public method for decoding
+  decode(input) {
+    let output = '';
+    let chr1; let chr2; let chr3;
+    let enc1; let enc2; let enc3; let enc4;
+    let i = 0;
+
+    // eslint-disable-next-line no-useless-escape
+    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
+    while (i < input.length) {
+      enc1 = this._keyStr.indexOf(input.charAt(i++));
+      enc2 = this._keyStr.indexOf(input.charAt(i++));
+      enc3 = this._keyStr.indexOf(input.charAt(i++));
+      enc4 = this._keyStr.indexOf(input.charAt(i++));
+
+      chr1 = (enc1 << 2) | (enc2 >> 4);
+      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
+      chr3 = ((enc3 & 3) << 6) | enc4;
+
+      output = output + String.fromCharCode(chr1);
+
+      // eslint-disable-next-line eqeqeq
+      if (enc3 != 64) {
+        output = output + String.fromCharCode(chr2);
+      }
+
+      // eslint-disable-next-line eqeqeq
+      if (enc4 != 64) {
+        output = output + String.fromCharCode(chr3);
+      }
+    } // Whend
+
+    output = Base64._utf8_decode(output);
+
+    return output;
+  }, // End Function decode
+
+  // private method for UTF-8 encoding
+  _utf8_encode(string) {
+    let utftext = '';
+    string = string.replace(/\r\n/g, '\n');
+
+    for (let n = 0; n < string.length; n++) {
+      const c = string.charCodeAt(n);
+
+      if (c < 128) {
+        utftext += String.fromCharCode(c);
+      } else if (c > 127 && c < 2048) {
+        utftext += String.fromCharCode((c >> 6) | 192);
+        utftext += String.fromCharCode((c & 63) | 128);
+      } else {
+        utftext += String.fromCharCode((c >> 12) | 224);
+        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
+        utftext += String.fromCharCode((c & 63) | 128);
+      }
+    } // Next n
+
+    return utftext;
+  }, // End Function _utf8_encode
+
+  // private method for UTF-8 decoding
+  _utf8_decode(utftext) {
+    let string = '';
+    let i = 0;
+    let c; let c2; let c3;
+    c = 0;
+    c2 = 0;
+
+    while (i < utftext.length) {
+      c = utftext.charCodeAt(i);
+
+      if (c < 128) {
+        string += String.fromCharCode(c);
+        i++;
+      } else if (c > 191 && c < 224) {
+        c2 = utftext.charCodeAt(i + 1);
+        string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
+        i += 2;
+      } else {
+        c2 = utftext.charCodeAt(i + 1);
+        c3 = utftext.charCodeAt(i + 2);
+        string += String.fromCharCode(
+          ((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63),
+        );
+        i += 3;
+      }
+    } // Whend
+
+    return string;
+  }, // End Function _utf8_decode
+};
+
+export default Base64;

src/blacklist/editBlacklist.js

+import m from 'mithril';
+import { TextField } from 'polythene-mithril';
+import { ListSelect, DatalistController } from 'amiv-web-ui-components';
+import { ResourceHandler } from '../auth';
+import EditView from '../views/editView';
+
+class NanoController {
+  constructor(resource) {
+    this.resource = resource;
+    this.handler = new ResourceHandler(resource);
+    this.data = {};
+  }
+
+  post(data) {
+    return new Promise((resolve, reject) => {
+      this.handler.post(data).then(() => {
+        this.cancel();
+      }).catch(reject);
+    });
+  }
+
+  cancel() {
+    m.route.set(`/${this.resource}`);
+  }
+}
+
+/**
+ * Table of all possible permissions to edit
+ *
+ * @class      PermissionEditor (name)
+ */
+
+export default class NewBlacklist extends EditView {
+  constructor({ attrs }) {
+    super({ attrs: { controller: new NanoController('blacklist'), ...attrs } });
+    this.userHandler = new ResourceHandler('users', ['firstname', 'lastname', 'email', 'nethz']);
+    this.userController = new DatalistController((query, search) => this.userHandler.get(
+      { search, ...query },
+    ));
+  }
+
+  beforeSubmit() {
+    const { data } = this.form;
+    // exchange user object with string of id
+    this.submit({ ...data, user: data.user ? data.user._id : undefined }).then(() => {
+      this.controller.changeModus('view');
+    });
+  }
+
+  view() {
+    return this.layout([
+      m('div', { style: { display: 'flex' } }, [
+        m(TextField, { label: 'User: ', disabled: true, style: { width: '160px' } }),
+        m('div', { style: { 'flex-grow': 1 } }, m(ListSelect, {
+          controller: this.userController,
+          selection: this.form.data.user,
+          listTileAttrs: user => Object.assign({}, { title: `${user.firstname} ${user.lastname}` }),
+          selectedText: user => `${user.firstname} ${user.lastname}`,
+          onSelect: (data) => { this.form.data.user = data; },
+        })),
+      ]),
+      ...this.form.renderSchema(['reason', 'start_time', 'price']),
+    ]);
+  }
+}

src/blacklist/viewBlacklist.js

+import m from 'mithril';
+import { Button } from 'polythene-mithril';
+import TableView from '../views/tableView';
+import { ResourceHandler } from '../auth';
+import RelationlistController from '../relationlistcontroller';
+import { dateFormatter } from '../utils';
+
+export default class BlacklistTable {
+  constructor() {
+    this.handler = new ResourceHandler('blacklist');
+    this.ctrl = new RelationlistController({
+      primary: 'blacklist',
+      secondary: 'users',
+      query: { sort: [['start_time', -1]] },
+    });
+  }
+
+  getItemData(data) {
+    return [
+      m(
+        'div', { style: { width: '18em' } },
+        m(
+          'div', { style: { 'font-weight': 'bold' } },
+          `${data.user.firstname} ${data.user.lastname}`,
+        ),
+        m('div', data.user.email),
+      ),
+      m(
+        'div', { style: { width: 'calc(100%-18em)' } },
+        m('div', `From ${dateFormatter(data.start_time, false)}
+        ${data.end_time ? ` to ${dateFormatter(data.end_time, false)}` : ''}`),
+        m('div', `Reason: ${data.reason}`),
+        data.price && m('div', `price: ${data.price}`),
+      ),
+      m('div', { style: { 'flex-grow': '100' } }),
+      m('div', (!data.end_time && this.ctrl.handler.rights.includes('POST')) && m(Button, {
+        // Button to mark this entry as resolved
+        className: 'blue-row-button',
+        borders: false,
+        label: 'redeem',
+        events: {
+          onclick: () => {
+            const date = new Date(Date.now());
+            const patchdata = Object.assign({}, data);
+            delete patchdata.user;
+            patchdata.end_time = `${date.toISOString().slice(0, -5)}Z`;
+            this.ctrl.handler.patch(patchdata).then(() => {
+              this.ctrl.refresh();
+              m.redraw();
+            });
+          },
+        },
+      })),
+    ];
+  }
+
+  view() {
+    return m(TableView, {
+      clickOnRows: false,
+      controller: this.ctrl,
+      keys: [null, null],
+      tileContent: data => this.getItemData(data),
+      titles: [
+        { text: 'User', width: '18em' },
+        { text: 'Detail', width: '9em' },
+      ],
+      onAdd: (this.ctrl.handler.rights.includes('POST')) ? () => {
+        m.route.set('/newblacklistentry');
+      } : false,
+    });
+  }
+}

src/events/editEvent.js

+import m from 'mithril';
+import { styler } from 'polythene-core-css';
+import {
+  RadioGroup, Switch, Dialog, Button, Tabs, Icon, TextField,
+} from 'polythene-mithril';
+import { FileInput, ListSelect, DatalistController } from 'amiv-web-ui-components';
+import { TabsCSS, ButtonCSS } from 'polythene-css';
+// eslint-disable-next-line import/extensions
+import { apiUrl, ownUrl } from 'networkConfig';
+import { ResourceHandler } from '../auth';
+import { colors } from '../style';
+import { icons } from '../views/elements';
+import EditView from '../views/editView';
+import Base64 from '../base64';
+
+ButtonCSS.addStyle('.nav-button', {
+  color_light_border: 'rgba(0, 0, 0, 0.09)',
+  color_light_disabled_background: 'rgba(0, 0, 0, 0.09)',
+  color_light_disabled_border: 'transparent',
+});
+
+TabsCSS.addStyle('.edit-tabs', {
+  color_light: '#555555',
+  // no hover effect
+  color_light_hover: '#555555',
+  color_light_selected: colors.amiv_blue,
+  color_light_tab_indicator: colors.amiv_blue,
+});
+
+const styles = [
+  {
+    '.imgPlaceholder': {
+      background: '#999',
+      position: 'relative',
+    },
+    '.imgPlaceholder > div': {
+      position: 'absolute',
+      top: 0,
+      bottom: 0,
+      left: 0,
+      right: 0,
+      'font-size': '16px',
+      display: 'flex',
+      'justify-content': 'center',
+      'align-items': 'center',
+    },
+    '.imgBackground': {
+      'background-size': 'contain',
+      'background-position': 'center',
+      'background-repeat': 'no-repeat',
+    },
+  },
+];
+styler.add('eventEdit', styles);
+
+export default class newEvent extends EditView {
+  constructor(vnode) {
+    super(vnode);
+    this.currentpage = 1;
+
+    // Create a usercontroller to handle the moderator field
+    this.userHandler = new ResourceHandler('users', ['firstname', 'lastname', 'email', 'nethz']);
+    this.userController = new DatalistController((query, search) => this.userHandler.get(
+      { search, ...query },
+    ));
+
+    // check whether the user has the right to create events or can only propose
+    this.rightSubmit = !m.route.get().startsWith('/proposeevent');
+
+    // proposition URL-link decoder
+    if (this.rightSubmit && m.route.param('proposition')) {
+      const data = JSON.parse(Base64.decode(m.route.param('proposition')));
+      this.form.data = data;
+    }
+    if (this.form.data.priority === 10) this.form.data.high_priority = true;
+
+    // read additional_fields to make it editable
+    if (this.form.data.additional_fields) {
+      const copy = JSON.parse(this.form.data.additional_fields);
+      this.form.data.add_fields_sbb = 'sbb_abo' in copy.properties;
+      this.form.data.add_fields_food = 'food' in copy.properties;
+      this.form.data.additional_fields = null;
+      let i = 0;
+      while (`text${i}` in copy.properties) {
+        this.form.data[`add_fields_text${i}`] = copy.properties[`text${i}`].title;
+        i += 1;
+      }
+      // TODO: find a better solution to keep track of the additional textfields
+      this.add_fields_text_index = i;
+    } else {
+      this.add_fields_text_index = 0;
+    }
+
+    // price can either not be set or set to null
+    // if it is 0 however, that would mean that there actually is a price that
+    // you can edit
+    this.hasprice = 'price' in this.form.data && this.form.data.price !== null;
+    this.hasregistration = 'spots' in this.form.data || 'time_registration_start' in this.form.data;
+  }
+
+  beforeSubmit() {
+    // Here comes all the processing from the state of our input form into data send to the api.
+    // In particular, we have to:
+    // - remove images from the patch that should not get changed, add images in right format that
+    //   should be changed
+    // - transfer states like add_fields_sbb etc. into actual additional_fields
+    // - dependent on user rights, either submit to API or create an event proposal link
+
+    const { data } = JSON.parse(JSON.stringify(this.form));
+
+    // Images that should be changed have new_{key} set, this needs to get uploaded to the API
+    // All the other images should be removed from the upload to not overwrite them.
+    const images = {};
+    ['thumbnail', 'infoscreen', 'poster'].forEach((key) => {
+      if (this.form.data[`new_${key}`]) {
+        images[`img_${key}`] = this.form.data[`new_${key}`];
+        delete data[`new_${key}`];
+      }
+      if (data[`img_${key}`] !== undefined && data[`img_${key}`] !== null) {
+        delete data[`img_${key}`];
+      }
+    });
+
+    // Merge Options for additional fields
+    // This is the sceleton schema:
+    const additionalFields = {
+      $schema: 'http://json-schema.org/draft-04/schema#',
+      additionalProperties: false,
+      title: 'Additional Fields',
+      type: 'object',
+      properties: {},
+      required: [],
+    };
+    if (data.add_fields_sbb) {
+      additionalFields.properties.sbb_abo = {
+        type: 'string',
+        title: 'SBB Abonnement',
+        enum: ['None', 'GA', 'Halbtax', 'Gleis 7', 'HT + Gleis 7'],
+      };
+      additionalFields.required.push('sbb_abo');
+    }
+    if (data.add_fields_food) {
+      additionalFields.properties.food = {
+        type: 'string',
+        title: 'Food',
+        enum: ['Omnivor', 'Vegi', 'Vegan', 'Other'],
+      };
+      additionalFields.properties.food_special = {
+        type: 'string',
+        title: 'Special Food Requirements',
+      };
+      additionalFields.required.push('food');
+    }
+    // There can be an arbitrary number of text fields added.
+    let i = 0;
+    while (`add_fields_text${i}` in data) {
+      const fieldName = `text${i}`;
+      additionalFields.properties[fieldName] = {
+        type: 'string',
+        minLength: 1,
+        title: data[`add_fields_text${i}`],
+      };
+      additionalFields.required.push(fieldName);
+      delete data[`add_fields_text${i}`];
+      i += 1;
+    }
+    // Remove our intermediate form states from the the data that is uploaded
+    if ('add_fields_sbb' in data) delete data.add_fields_sbb;
+    if ('add_fields_food' in data) delete data.add_fields_food;
+
+    // If there are no additional_fields, the properties are empty, and we null the whole field,
+    // otherwise we send a json string of the additional fields object
+    if (Object.keys(additionalFields.properties).length > 0) {
+      data.additional_fields = JSON.stringify(additionalFields);
+    } else {
+      data.additional_fields = null;
+    }
+
+    // Translate state high_priority into a priority for the event
+    if (data.high_priority === true) data.priority = 10;
+    else data.priority = 1;
+    delete data.high_priority;
+
+    // if spots is not set, also remove 'allow_email_signup'
+    if (!('spots' in data) && 'allow_email_signup' in data
+        && !data.allow_email_signup) {
+      delete data.allow_email_signup;
+    }
+
+    // Propose Event <=> Submit Changes dependent on the user rights
+    if (this.rightSubmit) {
+      // Submition tool
+
+      // Change moderator from user object to user id
+      if (data.moderator) data.moderator = data.moderator._id;
+      // first upload the data as JSON, then the images as form data
+      this.submit(data).then(({ _id, _etag }) => {
+        if (Object.keys(images).length > 0) {
+          // there are changed images to upload, they are added as an additional PATCH on this event
+          const imageForm = new FormData();
+          Object.keys(images).forEach(key => imageForm.append(key, images[key]));
+          imageForm.append('_id', _id);
+          imageForm.append('_etag', _etag);
+          this.controller.patch(imageForm).then(() => {
+            m.route.set(`/events/${_id}`);
+          })
+            .catch(() => {
+              this.controller.id = _id;
+              this.controller.handler.getItem(_id).then((item) => {
+                this.controller.data = item;
+                this.form.data = item;
+                this.controller.changeModus('edit');
+                window.history.replaceState({}, '', `/events/${_id}`);
+              });
+            });
+        } else {
+          m.route.set(`/events/${_id}`);
+        }
+      });
+    } else {
+      // Propose tool
+      Dialog.show({
+        title: 'Congratulations!',
+        body: [
+          m(
+            'div',
+            'You sucessfuly setup an event.',
+            'Please send this link to the respectiv board member for validation.',
+          ),
+          m('input', {
+            type: 'text',
+            style: { width: '335px' },
+            value: `${ownUrl}/newevent?${m.buildQueryString({
+              proposition: Base64.encode(JSON.stringify(this.form.data)),
+            })}`,
+            id: 'textId',
+          }),
+        ],
+        backdrop: true,
+        footerButtons: [
+          m(Button, {
+            label: 'Copy',
+            events: {
+              onclick: () => {
+                const copyText = document.getElementById('textId');
+                copyText.select();
+                document.execCommand('copy');
+              },
+            },
+          }),
+        ],
+      });
+    }
+  }
+
+  view() {
+    // load image urls from the API data
+    ['thumbnail', 'poster', 'infoscreen'].forEach((key) => {
+      const img = this.form.data[`img_${key}`];
+      if (typeof (img) === 'object' && img !== null && 'file' in img) {
+        // the data from the API has a weird format, we only need the url to display the image
+        this.form.data[`img_${key}`] = { url: `${apiUrl}${img.file}` };
+      }
+    });
+
+    // Define the number of Tabs and their titles
+    const titles = ['Event Description', 'When and Where?', 'Signups', 'Internal Info'];
+    if (this.rightSubmit) titles.push('Images');
+    // Data fields of the event in the different tabs. Ordered the same way as the titles
+    const keysPages = [[
+      'title_en',
+      'catchphrase_en',
+      'description_en',
+      'title_de',
+      'catchphrase_de',
+      'description_de',
+    ],
+    ['time_start', 'time_end', 'location'],
+    ['price', 'spots', 'time_register_start', 'time_register_end', 'time_deregister_end'],
+    ['moderator', 'time_advertising_start', 'time_advertising_end'],
+    [],
+    ];
+    // Look which Tabs have errors
+    const errorPages = keysPages.map(keysOfOnePage => keysOfOnePage.map((key) => {
+      if (this.form.errors && key in this.form.errors) return this.form.errors[key].length > 0;
+      return false;
+    }).includes(true));
+
+    // Navigation Buttons to go to next/previous page
+    const buttonRight = m(Button, {
+      label: m('div.pe-button__label', m(Icon, {
+        svg: { content: m.trust(icons.ArrowRight) },
+        style: { top: '-5px', float: 'right' },
+      }), 'next'),
+      disabled: this.currentpage === titles.length,
+      ink: false,
+      border: true,
+      className: 'nav-button',
+      events: { onclick: () => { this.currentpage = Math.min(this.currentpage + 1, 5); } },
+    });
+    const buttonLeft = m(Button, {
+      label: m('div.pe-button__label', m(Icon, {
+        svg: { content: m.trust(icons.ArrowLeft) },
+        style: { top: '-5px', float: 'left' },
+      }), 'previous'),
+      disabled: this.currentpage === 1,
+      ink: false,
+      border: true,
+      className: 'nav-button',
+      events: { onclick: () => { this.currentpage = Math.max(1, this.currentpage - 1); } },
+    });
+
+
+    const radioButtonSelectionMode = m(RadioGroup, {
+      name: 'Selection Mode',
+      buttons: [
+        {
+          value: 'fcfs',
+          label: 'First come, first serve',
+        },
+        {
+          value: 'manual',
+          label: 'Selection made by organizer',
+        },
+      ],
+      onChange: (state) => {
+        this.selection_strategy = state.value;
+        this.form.data.selection_strategy = state.value;
+      },
+      value: this.selection_strategy,
+    });
+
+    // Processing for additional text fields users have to fill in for the signup.
+    const addFieldsText = [];
+    let i = 0;
+    while (`add_fields_text${i}` in this.form.data) {
+      addFieldsText.push(this.form._renderField(`add_fields_text${i}`, {
+        type: 'string',
+        label: `Label for Textfield ${i}`,
+      }));
+      const fieldIndex = i;
+      addFieldsText.push(m(Button, {
+        label: `Remove Textfield ${i}`,
+        className: 'red-row-button',
+        events: {
+          onclick: () => {
+            let index = fieldIndex;
+            while (`add_fields_text${index + 1}` in this.form.data) {
+              this.form.data[`add_fields_text${index}`] = this.form.data[
+                `add_fields_text${index + 1}`];
+              index += 1;
+            }
+            delete this.form.data[`add_fields_text${index}`];
+            this.add_fields_text_index = index;
+          },
+        },
+      }));
+      i += 1;
+    }
+
+    // checks currentPage and selects the fitting page
+    return this.layout([
+      // navigation bar
+      // all pages are displayed, current is highlighted,
+      // validation errors are shown per page by red icon-background
+      m(Tabs, {
+        className: 'edit-tabs',
+        // it would be too easy if we could set the background color in the theme class
+        style: { backgroundColor: colors.orange },
+        onChange: ({ index }) => { this.currentpage = index + 1; },
+        centered: true,
+        selectedTabIndex: this.currentpage - 1,
+      }, [...titles.entries()].map((numAndTitle) => {
+        const buttonAttrs = { label: numAndTitle[1] };
+        if (errorPages[numAndTitle[0]]) {
+          // in case of an error, put an error icon before the tab label
+          buttonAttrs.label = m('div', m(Icon, {
+            svg: { content: m.trust(icons.error) },
+            style: { top: '-2px', 'margin-right': '4px' },
+          }), numAndTitle[1]);
+        }
+        return buttonAttrs;
+      })),
+      m('div.maincontainer', { style: { height: 'calc(100vh - 180px)', 'overflow-y': 'auto' } }, [
+        // page 1: title & description
+        m('div', {
+          style: { display: (this.currentpage === 1) ? 'block' : 'none' },
+        }, [
+          ...this.form.renderSchema(['title_en', 'catchphrase_en']),
+          this.form._renderField('description_en', {
+            type: 'string',
+            label: 'English Description',
+            multiLine: true,
+            rows: 5,
+          }),
+          ...this.form.renderSchema(['title_de', 'catchphrase_de']),
+          this.form._renderField('description_de', {
+            type: 'string',
+            label: 'German Description',
+            multiLine: true,
+            rows: 5,
+          }),
+        ]),
+        // page 2: when & where
+        m('div', {
+          style: { display: (this.currentpage === 2) ? 'block' : 'none' },
+        }, this.form.renderSchema(['time_start', 'time_end', 'location'])),
+        // page 3: registration
+        m('div', {
+          style: { display: (this.currentpage === 3) ? 'block' : 'none' },
+        }, [
+          m(Switch, {
+            label: 'people have to pay something to attend this event',
+            style: { 'margin-bottom': '5px' },
+            checked: this.hasprice,
+            onChange: ({ checked }) => {
+              this.hasprice = checked;
+              if (!checked) {
+                // if it originally had a price, set to null, otherwise delete
+                if (this.controller.data.price) this.form.data.price = null;
+                else delete this.form.data.price;
+              }
+            },
+          }),
+          ...(this.hasprice ? this.form.renderSchema(['price']) : []),
+          m('br'),
+          m(Switch, {
+            label: 'people have to register to attend this event',
+            style: { 'margin-bottom': '5px' },
+            checked: this.hasregistration,
+            onChange: ({ checked }) => {
+              this.hasregistration = checked;
+              if (!checked) {
+                // remove all the data connected to registration
+                delete this.form.data.spots;
+                delete this.form.data.time_register_start;
+                delete this.form.data.time_register_end;
+                delete this.form.data.time_deregister_end;
+                delete this.form.data.add_fields_sbb;
+                delete this.form.data.add_fields_food;
+                delete this.form.data.allow_email_signup;
+                delete this.form.data.selection_strategy;
+              }
+            },
+          }),
+          ...(this.hasregistration ? this.form.renderSchema([
+            'spots', 'time_register_start', 'time_register_end', 'time_deregister_end']) : []),
+          this.hasregistration && this.form._renderField('add_fields_food', {
+            type: 'boolean',
+            label: 'Food Limitations',
+          }),
+          this.hasregistration && this.form._renderField('add_fields_sbb', {
+            type: 'boolean',
+            label: 'SBB Abonnement',
+          }),
+          this.hasregistration && m('br'),
+          ...(this.hasregistration ? addFieldsText : []),
+          this.hasregistration && m('br'),
+          this.hasregistration && m(Button, {
+            label: 'Additional Textfield',
+            className: 'blue-button',
+            border: true,
+            events: {
+              onclick: () => {
+                this.form.data[`add_fields_text${this.add_fields_text_index}`] = '';
+                this.add_fields_text_index += 1;
+              },
+            },
+          }),
+          this.hasregistration && m('br'),
+          ...(this.hasregistration ? this.form.renderSchema(['allow_email_signup']) : []),
+          m('br'),
+          ...(this.hasregistration ? 'Only check the "Email Signup" box, '
+            + 'if you expect non-ETH members to attend the event!' : []),
+          m('br'),
+
+          this.hasregistration && radioButtonSelectionMode,
+          m('br'),
+          m(Switch, {
+            label: 'people can register via an external link',
+            checked: this.hasexternalregistration,
+            onChange: ({ checked }) => {
+              this.hasexternalregistration = checked;
+              if (!checked) {
+                delete this.form.data.external_registration;
+              }
+            },
+          }),
+          this.hasexternalregistration && this.form._renderField('external_registration', {
+            type: 'string',
+            label: 'External Registration Link',
+          }),
+        ]),
+        // PAGE 4: Internal Info
+        m('div', {
+          style: { display: (this.currentpage === 4) ? 'block' : 'none' },
+        }, [
+          m('div', { style: { display: 'flex', 'margin-top': '5px' } }, [
+            m(TextField, {
+              label: 'Moderator: ',
+              disabled: true,
+              style: { width: '200px' },
+              help: 'Can edit the event and see signups.',
+            }),
+            m('div', { style: { 'flex-grow': 1 } }, m(ListSelect, {
+              controller: this.userController,
+              selection: this.form.data.moderator,
+              listTileAttrs: user => Object.assign(
+                {},
+                { title: `${user.firstname} ${user.lastname}` },
+              ),
+              selectedText: user => `${user.firstname} ${user.lastname}`,
+              onSelect: (data) => { this.form.data.moderator = data; },
+            })),
+          ]),
+          ...this.form.renderSchema(['time_advertising_start', 'time_advertising_end']),
+          ...this.form.renderSchema(['type']),
+          ...this.form.renderSchema(['show_website', 'show_announce', 'show_infoscreen']),
+          // pritority update
+          this.form._renderField('high_priority', {
+            type: 'boolean',
+            label: 'Set high Priority',
+          }),
+          m('div', 'Please send an email to info@amiv.ch in order to show your event on'
+          + 'the infoscreen until the new infoscreen tool is ready.'),
+
+        ]),
+
+        // page 5: images
+        m('div', {
+          style: { display: (this.currentpage === 5) ? 'block' : 'none' },
+
+        }, [
+          m('div', 'Formats for the files: Thumbnail: 1:1, Poster: Any DIN-A, Infoscreen: 16:9'),
+          // All images and placeholders are placed next to each other in the following div:
+          m('div', { style: { width: '90%', display: 'flex' } }, [
+            // POSTER
+            m('div', { style: { width: '30%' } }, [
+              m('div', 'Poster'),
+              // imgPlaceholder has exactly a 1:1 aspect ratio
+              m('div.imgPlaceholder', { style: { width: '100%', 'padding-bottom': '141%' } }, [
+                // inside, we display the image. if it has a wrong aspect ratio, grey areas
+                // from the imgPlaceholder will be visible behind the image
+                this.form.data.img_poster ? m('div.imgBackground', {
+                  style: { 'background-image': `url(${this.form.data.img_poster.url})` },
+                // Placeholder in case that there is no image
+                }) : m('div', 'No Poster'),
+              ]),
+              m(Button, {
+                className: 'red-row-button',
+                borders: false,
+                label: 'remove',
+                events: { onclick: () => { this.form.data.img_poster = null; } },
+              }),
+            ]),
+            // INFOSCREEN
+            m('div', { style: { width: '50%', 'margin-left': '5%' } }, [
+              m('div', 'Infoscreen'),
+              // imgPlaceholder has exactly a 16:9 aspect ratio
+              m('div.imgPlaceholder', { style: { width: '100%', 'padding-bottom': '56.25%' } }, [
+                // inside, we display the image. if it has a wrong aspect ratio, grey areas
+                // from the imgPlaceholder will be visible behind the image
+                this.form.data.img_infoscreen ? m('div.imgBackground', {
+                  style: { 'background-image': `url(${this.form.data.img_infoscreen.url})` },
+                  // Placeholder in case that there is no image
+                }) : m('div', 'No Infoscreen Image'),
+              ]),
+              m(Button, {
+                className: 'red-row-button',
+                borders: false,
+                label: 'remove',
+                events: { onclick: () => { this.form.data.img_infoscreen = null; } },
+              }),
+            ]),
+            // THUMBNAIL
+            m('div', { style: { width: '10%', 'margin-left': '5%' } }, [
+              m('div', 'Thumbnail'),
+              // imgPlaceholder has exactly a 16:9 aspect ratio
+              m('div.imgPlaceholder', { style: { width: '100%', 'padding-bottom': '100%' } }, [
+                // inside, we display the image. if it has a wrong aspect ratio, grey areas
+                // from the imgPlaceholder will be visible behind the image
+                this.form.data.img_thumbnail ? m('div.imgBackground', {
+                  style: { 'background-image': `url(${this.form.data.img_thumbnail.url})` },
+                  // Placeholder in case that there is no image
+                }) : m('div', 'No Thumbnail'),
+              ]),
+              m(Button, {
+                className: 'red-row-button',
+                borders: false,
+                label: 'remove',
+                events: { onclick: () => { this.form.data.img_thumbnail = null; } },
+              }),
+            ]),
+          ]),
+          // old stuff, goes through all images
+          ['thumbnail', 'poster', 'infoscreen'].map(key => [
+            // input to upload a new image
+            m(FileInput, this.form.bind({
+              name: `new_${key}`,
+              label: `New ${key} Image`,
+              accept: 'image/png, image/jpeg',
+              onChange: ({ value }) => {
+                // if a new image file is selected, we display it using a data encoded url
+                const reader = new FileReader();
+                reader.onload = ({ target: { result } }) => {
+                  this.form.data[`img_${key}`] = { url: result };
+                  m.redraw();
+                };
+                reader.readAsDataURL(value);
+                this.form.data[`new_${key}`] = value;
+              },
+            })),
+          ]),
+
+        ]),
+        // bottom back & forth Buttons
+        m('div', {
+          style: {
+            display: 'flex',
+            'justify-content': 'space-between',
+            padding: '35px',
+            'padding-top': '20px',
+          },
+        }, [buttonLeft, buttonRight]),
+      ]),
+    ], this.rightSubmit ? 'submit' : 'propose', false);
+  }
+}

src/events/item.js

+import m from 'mithril';
+import viewEvent from './viewEvent';
+import editEvent from './editEvent';
+import ItemController from '../itemcontroller';
+import { loadingScreen } from '../layout';
+
+export default class EventItem {
+  constructor() {
+    this.controller = new ItemController('events', { moderator: 1 });
+  }
+
+  view() {
+    if (!this.controller || (!this.controller.data && this.controller.modus !== 'new')) {
+      return m(loadingScreen);
+    }
+    if (this.controller.modus !== 'view') return m(editEvent, { controller: this.controller });
+    return m(viewEvent, { controller: this.controller });
+  }
+}

src/events/participants.js

+import m from 'mithril';
+import { ListSelect, DatalistController, Form } from 'amiv-web-ui-components';
+import { Toolbar, ToolbarTitle, Dialog, Card, Button } from 'polythene-mithril';
+import { ResourceHandler } from '../auth';
+import RelationlistController from '../relationlistcontroller';
+import TableView from '../views/tableView';
+import { dateFormatter } from '../utils';
+
+
+export class ParticipantsController {
+  constructor() {
+    this.signupHandler = new ResourceHandler('eventsignups');
+    this.signupCtrl = new DatalistController((query, search) => this.signupHandler.get({
+      search, ...query,
+    }));
+    this.userHandler = new ResourceHandler('users');
+    this.acceptedUserController = new RelationlistController({
+      primary: 'eventsignups',
+      secondary: 'users',
+      query: { where: { accepted: true } },
+      searchKeys: ['email'],
+      includeWithoutRelation: true,
+    });
+    this.waitingUserController = new RelationlistController({
+      primary: 'eventsignups',
+      secondary: 'users',
+      query: { where: { accepted: false } },
+      searchKeys: ['email'],
+      includeWithoutRelation: true,
+    });
+    this.allParticipants = [];
+  }
+
+  setEventId(eventId) {
+    this.signupCtrl.setQuery({ where: { event: eventId } });
+    this.acceptedUserController.setQuery({ where: { event: eventId, accepted: true } });
+    this.waitingUserController.setQuery({ where: { event: eventId, accepted: false } });
+  }
+
+  refresh() {
+    this.signupCtrl.getFullList().then((list) => {
+      this.allParticipants = list;
+    });
+    this.acceptedUserController.refresh();
+    this.waitingUserController.refresh();
+  }
+}
+
+
+// Helper class to either display the signed up participants or those on the
+// waiting list.
+export class ParticipantsTable {
+  constructor({
+    attrs: {
+      participantsCtrl,
+      waitingList,
+      additional_fields_schema: additionalFieldsSchema,
+    },
+  }) {
+    this.participantsCtrl = participantsCtrl;
+    if (waitingList) {
+      this.ctrl = this.participantsCtrl.waitingUserController;
+    } else {
+      this.ctrl = this.participantsCtrl.acceptedUserController;
+    }
+    this.add_fields_schema = additionalFieldsSchema
+      ? JSON.parse(additionalFieldsSchema).properties : null;
+
+    // true while in the modus of adding a signup
+    this.addmode = false;
+    this.userHandler = new ResourceHandler('users');
+    this.userController = new DatalistController(
+      (query, search) => this.userHandler.get({ search, ...query }).then(data => ({
+        ...data,
+        _items: data._items.map(user => ({
+          hasSignup: this.participantsCtrl.allParticipants.some(
+            signupUser => user._id === signupUser.user,
+          ),
+          ...user,
+        })),
+      })),
+    );
+  }
+
+  exportAsCSV(filePrefix) {
+    this.ctrl.getFullList().then((list) => {
+      const csvData = (list.map((item) => {
+        const additionalFields = item.additional_fields && JSON.parse(item.additional_fields);
+
+        const line = [
+          item.position,
+          item._created,
+          item.user ? item.user.firstname : '',
+          item.user ? item.user.lastname : '',
+          item.user ? item.user.membership : 'none',
+          item.email,
+          item.accepted,
+          item.confirmed,
+          ...Object.keys(this.add_fields_schema || {}).map(key => (
+            additionalFields && additionalFields[key] ? additionalFields[key] : '')),
+        ].join('","');
+        return `"${line}"`;
+      })).join('\n');
+
+      const headercontent = [
+        'Position', 'Date', 'Firstname', 'Lastname',
+        'Membership', 'Email', 'Accepted', 'Confirmed',
+        ...Object.keys(this.add_fields_schema || {}).map(key => this.add_fields_schema[key].title),
+      ].join('","');
+
+      const header = `"${headercontent}"`;
+
+      const filename = `${filePrefix}_participants_export.csv`;
+      const fileContent = `data:text/csv;charset=utf-8,${header}\n${csvData}`;
+
+      const link = document.createElement('a');
+      link.setAttribute('href', encodeURI(fileContent));
+      link.setAttribute('download', filename);
+      link.click();
+    });
+  }
+
+  itemRow(data) {
+    // TODO list should not have hardcoded size outside of stylesheet
+    const hasPatchRights = data._links.self.methods.indexOf('PATCH') > -1;
+    const additionalFields = data.additional_fields && JSON.parse(data.additional_fields);
+    const canBeAccepted = !data.accepted;
+    return [
+      m('div', { style: { width: '9em' } }, dateFormatter(data._created)),
+      m('div', { style: { width: '16em' } }, [
+        ...data.user ? [`${data.user.firstname} ${data.user.lastname}`, m('br')] : '',
+        data.email,
+      ]),
+      m(
+        'div', { style: { width: '14em' } },
+        m('div', ...data.user ? `Membership: ${data.user.membership}` : ''),
+        (additionalFields && this.add_fields_schema) ? Object.keys(additionalFields).map(
+          key => m('div', `${this.add_fields_schema[key].title}: ${additionalFields[key]}`),
+        ) : '',
+      ),
+      m('div', { style: { 'flex-grow': '100' } }),
+      canBeAccepted ? m('div', m(Button, {
+        // Button to accept this eventsignup
+        className: 'blue-row-button',
+        style: {
+          margin: '0px 4px',
+        },
+        borders: false,
+        label: 'accept',
+        events: {
+          onclick: () => {
+            // preapare data for patch request
+            const patch = (({ _id, _etag }) => ({ _id, _etag }))(data);
+            patch.accepted = true;
+            this.ctrl.handler.patch(patch).then(() => {
+              this.participantsCtrl.refresh();
+              m.redraw();
+            });
+          },
+        },
+      })) : '',
+      hasPatchRights ? m('div', m(Button, {
+        // Button to remove this eventsignup
+        className: 'red-row-button',
+        borders: false,
+        label: 'remove',
+        events: {
+          onclick: () => {
+            this.ctrl.handler.delete(data).then(() => {
+              this.participantsCtrl.refresh();
+              m.redraw();
+            });
+          },
+        },
+      })) : '',
+    ];
+  }
+
+  editEventSignup(user, event) {
+    const form = new Form();
+
+    const schema = JSON.parse(event.additional_fields);
+
+    if (schema && schema.$schema) {
+      // ajv fails to verify the v4 schema of some resources
+      schema.$schema = 'http://json-schema.org/draft-06/schema#';
+      form.setSchema(schema);
+    }
+
+    const elements = form.renderSchema();
+
+    Dialog.show({
+      body: m('form', { onsubmit: () => false }, elements),
+      backdrop: true,
+      footerButtons: [
+        m(Button, {
+          label: 'Cancel',
+          events: { onclick: () => Dialog.hide() },
+        }),
+        m(Button, {
+          label: 'Submit',
+          events: {
+            onclick: () => {
+              const additionalFieldsString = JSON.stringify(form.getData());
+              const data = {
+                event: event._id,
+                additional_fields: additionalFieldsString,
+              };
+              data.user = user._id;
+              this.ctrl.handler.post(data).then(() => {
+                Dialog.hide();
+                this.participantsCtrl.refresh();
+                m.redraw();
+              });
+            },
+          },
+        })],
+    });
+  }
+
+  view({ attrs: { title, filePrefix, event, waitingList } }) {
+    return m(Card, {
+      style: { height: '400px', 'margin-bottom': '10px' },
+      content: m('div', [
+        this.addmode ? m(ListSelect, {
+          controller: this.userController,
+          listTileAttrs: user => Object.assign({}, {
+            title: `${user.firstname} ${user.lastname}`,
+            style: (user.hasSignup ? { color: 'rgba(0, 0, 0, 0.2)' } : {}),
+            hoverable: !user.hasSignup,
+          }),
+          selectedText: user => `${user.firstname} ${user.lastname}`,
+          onSubmit: (user) => {
+            this.addmode = false;
+            if (event.additional_fields) {
+              this.editEventSignup(user, event);
+            } else {
+              this.ctrl.handler.post({
+                user: user._id,
+                event: event._id,
+                accepted: !waitingList,
+              }).then(() => {
+                this.participantsCtrl.refresh();
+                m.redraw();
+              });
+            }
+          },
+          onCancel: () => { this.addmode = false; m.redraw(); },
+        }) : '',
+        m(Toolbar, { compact: true }, [
+          m(ToolbarTitle, { text: title }),
+          (!waitingList
+             || event.selection_strategy === 'manual'
+             || event.signup_count >= event.spots) && m(Button, {
+            style: { margin: '0px 4px' },
+            className: 'blue-button',
+            borders: true,
+            label: 'add',
+            events: { onclick: () => { this.addmode = true; } },
+          }),
+          m(Button, {
+            className: 'blue-button',
+            borders: true,
+            label: 'export CSV',
+            events: { onclick: () => this.exportAsCSV(filePrefix) },
+          }),
+        ]),
+        m(TableView, {
+          tableHeight: '275px',
+          controller: this.ctrl,
+          tileContent: data => this.itemRow(data),
+          clickOnRows: false,
+          titles: [
+            { text: 'Date of Signup', width: '9em' },
+            { text: 'Participant', width: '16em' },
+            { text: 'Additional Info', width: '16em' },
+          ],
+        }),
+      ]),
+    });
+  }
+}

src/events/table.js

+import m from 'mithril';
+import { Snackbar } from 'polythene-mithril';
+import { DatalistController } from 'amiv-web-ui-components';
+import axios from 'axios';
+import { hookUrl } from 'networkConfig';
+import TableView from '../views/tableView';
+import { dateFormatter } from '../utils';
+import { ResourceHandler } from '../auth';
+import { get } from '../localStorage';
+
+
+/* Table of all Events
+ *
+ * Makes use of the standard TableView
+ */
+
+const triggerHook = () => {
+  axios.post(hookUrl, { token: get('token') }).then(() => {
+    Snackbar.show({ title: 'Successful', style: { color: 'green' } });
+  }).catch((e) => {
+    // eslint-disable-next-line no-console
+    console.log(e);
+    Snackbar.show({
+      title: 'Network Error, please contact administrator',
+      style: { color: 'red' },
+    });
+  });
+};
+
+export default class EventTable {
+  constructor() {
+    this.handler = new ResourceHandler('events');
+    this.ctrl = new DatalistController((query, search) => this.handler.get({ search, ...query }));
+  }
+
+  getItemData(data) {
+    return [
+      m('div', { style: { width: 'calc(100% - 18em)' } }, data.title_de || data.title_en),
+      m('div', { style: { width: '9em' } }, dateFormatter(data.time_start)),
+      m('div', { style: { width: '9em' } }, dateFormatter(data.time_end)),
+    ];
+  }
+
+  view() {
+    const now = new Date();
+    return m(TableView, {
+      controller: this.ctrl,
+      keys: ['titel_en', 'time_start', 'time_end'],
+      tileContent: this.getItemData,
+      titles: [
+        { text: 'Titel', width: 'calc(100% - 18em)' },
+        { text: 'Start', width: '9em' },
+        { text: 'End', width: '9em' },
+      ],
+      filters: [[{
+        name: 'upcoming',
+        query: { time_start: { $gte: `${now.toISOString().slice(0, -5)}Z` } },
+      }, {
+        name: 'past',
+        query: { time_start: { $lt: `${now.toISOString().slice(0, -5)}Z` } },
+      }]],
+      buttons: this.handler.rights.includes('POST') ? [
+        { text: 'Rerender website', onclick: triggerHook },
+      ] : [],
+      // per default, enable the 'upcoming' filter
+      initFilterIdxs: [[0, 0]],
+      onAdd: (this.handler.rights.length > 0)
+        ? () => {
+          if (this.handler.rights.includes('POST')) {
+            m.route.set('/newevent');
+          } else {
+            m.route.set('/proposeevent');
+          }
+        } : false,
+    });
+  }
+}

src/events/viewEvent.js

+import m from 'mithril';
+import { Button } from 'polythene-mithril';
+import Stream from 'mithril/stream';
+import { styler } from 'polythene-core-css';
+import { DropdownCard, Chip } from 'amiv-web-ui-components';
+// eslint-disable-next-line import/extensions
+import { apiUrl } from 'networkConfig';
+import ItemView from '../views/itemView';
+import { ParticipantsController, ParticipantsTable } from './participants';
+import { dateFormatter } from '../utils';
+import { Property, FilterChip, icons } from '../views/elements';
+import { colors } from '../style';
+
+const viewLayout = [
+  {
+    '.propertyLangIndicator': {
+      width: '30px',
+      height: '20px',
+      float: 'left',
+      'background-color': 'rgb(031,045,084)',
+      'border-radius': '10px',
+      'text-align': 'center',
+      'line-height': '20px',
+      color: 'rgb(255,255,255)',
+      'margin-right': '10px',
+      'font-size': '11px',
+    },
+    '.eventViewLeft': {
+      'grid-column': 1,
+    },
+    '.eventViewRight': {
+      'grid-column': 2,
+    },
+    '.eventViewRight h4': {
+      'margin-top': '0px',
+    },
+  },
+];
+styler.add('eventView', viewLayout);
+
+
+// small helper class to display both German and English content together, dependent
+// on which content is available.
+class DuoLangProperty {
+  view({ attrs: { title, de, en } }) {
+    // TODO Lang indicators should be smaller and there should be less margin
+    // between languages
+    return m(
+      Property,
+      { title },
+      de ? m('div', [
+        m('div', { className: 'propertyLangIndicator' }, 'DE'),
+        m('p', de),
+      ]) : '',
+      en ? m('div', [
+        m('div', { className: 'propertyLangIndicator' }, 'EN'),
+        m('p', en),
+      ]) : '',
+    );
+  }
+}
+
+class ParticipantsSummary {
+  constructor() {
+    this.onlyAccepted = true;
+  }
+
+  view({ attrs: { participants, additionalFields = "{'properties': {}}" } }) {
+    // Parse the JSON from additional fields into an object
+    const parsedParticipants = participants.map(signup => ({
+      ...signup,
+      additional_fields: signup.additional_fields
+        ? JSON.parse(signup.additional_fields) : {},
+    }));
+    // Filter if only accepted participants should be shown
+    const filteredParticipants = parsedParticipants.filter(
+      participant => (this.onlyAccepted ? participant.accepted : true),
+    );
+
+    // check which additional fields should get summarized
+    let hasSBB = false;
+    let hasFood = false;
+    if (additionalFields) {
+      hasSBB = 'sbb_abo' in JSON.parse(additionalFields).properties;
+      hasFood = 'food' in JSON.parse(additionalFields).properties;
+    }
+
+    return m('div', [
+      m('div', {
+        style: {
+          height: '50px',
+          'overflow-x': 'auto',
+          'overflow-y': 'hidden',
+          'white-space': 'nowrap',
+          padding: '0px 5px',
+        },
+      }, [].concat(['Filters: '], ...[
+        m(FilterChip, {
+          selected: this.onlyAccepted,
+          onclick: () => { this.onlyAccepted = !this.onlyAccepted; },
+        }, 'accepted users'),
+      ])),
+      hasSBB ? m('div', { style: { display: 'flex' } }, [
+        m(Property, { title: 'No SBB', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.sbb_abo === 'None',
+        ).length),
+        m(Property, { title: 'GA', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.sbb_abo === 'GA',
+        ).length),
+        m(Property, { title: 'Halbtax', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.sbb_abo === 'Halbtax',
+        ).length),
+        m(Property, { title: 'Gleis 7', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.sbb_abo === 'Gleis 7',
+        ).length),
+      ]) : '',
+      hasFood ? m('div', { style: { display: 'flex' } }, [
+        m(Property, { title: 'Omnivors', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.food === 'Omnivor',
+        ).length),
+        m(Property, { title: 'Vegis', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.food === 'Vegi',
+        ).length),
+        m(Property, { title: 'Vegans', leftAlign: false }, filteredParticipants.filter(
+          signup => signup.additional_fields.food === 'Vegan',
+        ).length),
+      ]) : '',
+      m('textarea', {
+        style: { opacity: '0', width: '0px' },
+        id: 'participantsemails',
+      }, filteredParticipants.map(signup => signup.email).toString().replace(/,/g, '; ')),
+      m(Button, {
+        label: 'Copy Emails',
+        events: {
+          onclick: () => {
+            document.getElementById('participantsemails').select();
+            document.execCommand('copy');
+          },
+        },
+      }),
+    ]);
+  }
+}
+
+export default class viewEvent extends ItemView {
+  constructor(vnode) {
+    super(vnode);
+    this.participantsCtrl = new ParticipantsController();
+    this.description = false;
+    this.advertisement = false;
+    this.registration = false;
+    this.modalDisplay = Stream('none');
+  }
+
+  oninit() {
+    this.participantsCtrl.setEventId(this.data._id);
+  }
+
+  cloneEvent() {
+    const event = Object.assign({}, this.data);
+
+    const eventInfoToDelete = [
+      '_id',
+      '_created',
+      '_etag',
+      '_links',
+      '_updated',
+      'signup_count',
+      'unaccepted_count',
+      '__proto__',
+    ];
+    const now = new Date();
+    if (event.time_end < `${now.toISOString().slice(0, -5)}Z`) {
+      eventInfoToDelete.push(...[
+        'time_advertising_end',
+        'time_advertising_start',
+        'time_end',
+        'time_register_end',
+        'time_deregister_end',
+        'time_register_start',
+        'time_start']);
+    }
+    eventInfoToDelete.forEach((key) => {
+      delete event[key];
+    });
+
+    this.controller.changeModus('new');
+    this.controller.data = event;
+  }
+
+  view() {
+    let displaySpots = '-';
+    const stdMargin = { margin: '5px' };
+
+    // Get the image and insert it inside the modal -
+    // use its "alt" text as a caption
+    const modalImg = document.getElementById('modalImg');
+
+    if (this.data.spots !== 0) {
+      displaySpots = this.data.spots;
+    }
+
+    return this.layout([
+      // this div is the title line
+      m('div.maincontainer', [
+        // event image if existing
+        this.data.img_thumbnail ? m('img', {
+          src: `${apiUrl}${this.data.img_thumbnail.file}`,
+          height: '50px',
+          style: { float: 'left', margin: '0 5px' },
+        }) : '',
+        m('h1', this.data.title_de || this.data.title_en),
+      ]),
+      // below the title, most important details are listed
+      m('div.maincontainer', { style: { display: 'flex' } }, [
+        this.data.type && m(Property, {
+          style: stdMargin,
+          title: 'Type',
+        }, `${this.data.type.charAt(0).toUpperCase() + this.data.type.slice(1)}`),
+        (this.data.spots !== null && 'signup_count' in this.data
+         && this.data.signup_count !== null)
+          ? m(Property, {
+            style: stdMargin,
+            title: 'Signups',
+          }, `${this.data.signup_count} / ${displaySpots}`) : '',
+        this.data.location && m(Property, {
+          style: stdMargin,
+          title: 'Location',
+        }, `${this.data.location}`),
+        this.data.time_start && m(Property, {
+          title: 'Time',
+          style: stdMargin,
+        }, `${dateFormatter(this.data.time_start)} - ${dateFormatter(this.data.time_end)}`),
+        this.data.moderator && m(Property, {
+          title: 'Moderator',
+          style: stdMargin,
+        }, m.trust(`${this.data.moderator.firstname} ${this.data.moderator.lastname}
+         (<a href='mailto:${this.data.moderator.email}'>${this.data.moderator.email}</a>)`)),
+      ]),
+      // everything else is not listed in DropdownCards, which open only on request
+      m('div.viewcontainer', [
+        m('div.viewcontainercolumn', [
+          m(DropdownCard, { title: 'description' }, [
+            m(DuoLangProperty, {
+              title: 'Catchphrase',
+              de: this.data.catchphrase_de,
+              en: this.data.catchphrase_en,
+            }),
+            m(DuoLangProperty, {
+              title: 'Description',
+              de: this.data.description_de,
+              en: this.data.description_en,
+            }),
+          ]),
+
+          m(DropdownCard, { title: 'advertisement', style: { margin: '10px 0' } }, [
+            [
+              m(Chip, {
+                svg: this.data.show_announce ? icons.checked : icons.clear,
+                border: '1px #aaaaaa solid',
+              }, 'announce'),
+              m(Chip, {
+                svg: this.data.show_infoscreen ? icons.checked : icons.clear,
+                border: '1px #aaaaaa solid',
+                margin: '4px',
+              }, 'infoscreen'),
+              m(Chip, {
+                svg: this.data.show_website ? icons.checked : icons.clear,
+                border: '1px #aaaaaa solid',
+              }, 'website'),
+            ],
+            this.data.time_advertising_start ? m(
+              Property,
+              { title: 'Advertising Time' },
+              `${dateFormatter(this.data.time_advertising_start)} - `
+              + `${dateFormatter(this.data.time_advertising_end)}`,
+            ) : '',
+            this.data.priority ? m(
+              Property,
+              { title: 'Priority' },
+              `${this.data.priority}`,
+            ) : '',
+          ]),
+
+          m(DropdownCard, { title: 'Registration', style: { margin: '10px 0' } }, [
+            this.data.price ? m(Property, { title: 'Price' }, `${this.data.price}`) : '',
+            this.data.time_register_start ? m(
+              Property,
+              { title: 'Registration Time' },
+              `${dateFormatter(this.data.time_register_start)} - `
+              + `${dateFormatter(this.data.time_register_end)}`,
+            ) : '',
+            this.data.time_deregister_end ? m(
+              Property,
+              { title: 'Deregistration Time' },
+              `${dateFormatter(this.data.time_deregister_end)}`,
+            ) : '',
+            this.data.selection_strategy ? m(
+              Property,
+              { title: 'Selection Mode' },
+              m.trust(this.data.selection_strategy),
+            ) : '',
+            this.data.allow_email_signup && m(Property, 'non AMIV-Members allowed'),
+            this.data.additional_fields && m(
+              Property,
+              { title: 'Registration Form' },
+              this.data.additional_fields,
+            ),
+            this.data.external_registration && m(
+              Property,
+              { title: 'External Registration' },
+              m('a', { href: this.data.external_registration, target: '_blank' },
+                this.data.external_registration),
+            ),
+          ]),
+
+          // a list of email adresses of all participants, easy to copy-paste
+          this.data.spots !== null ? m(DropdownCard, {
+            title: 'Participants Summary',
+            style: { margin: '10px 0' },
+          }, m(ParticipantsSummary, {
+            participants: this.participantsCtrl.allParticipants,
+            additionalFields: this.data.additional_fields,
+          })) : '',
+
+          m(DropdownCard, { title: 'Images' }, [
+            m('div', {
+              style: {
+                display: 'flex',
+              },
+            }, [
+              m('div', {
+                style: {
+                  width: '40%',
+                  padding: '5px',
+                },
+              }, [
+                this.data.img_poster && m('div', 'Poster'),
+                this.data.img_poster && m('img', {
+                  src: `${apiUrl}${this.data.img_poster.file}`,
+                  width: '100%',
+                  onclick: () => {
+                    this.modalDisplay('block');
+                    modalImg.src = `${apiUrl}${this.data.img_poster.file}`;
+                  },
+                }),
+              ]),
+              m('div', {
+                style: {
+                  width: '52%',
+                  padding: '5px',
+                },
+              }, [
+                m('div', [
+                  this.data.img_infoscreen && m('div', 'Infoscreen'),
+                  this.data.img_infoscreen && m('img', {
+                    src: `${apiUrl}${this.data.img_infoscreen.file}`,
+                    width: '100%',
+                    onclick: () => {
+                      this.modalDisplay('block');
+                      modalImg.src = `${apiUrl}${this.data.img_infoscreen.file}`;
+                    },
+                  }),
+                ]),
+              ]),
+            ]),
+          ]),
+        ]),
+        m('div.viewcontainercolumn', { style: { width: '50em' } }, [
+          this.data.time_register_start ? m(ParticipantsTable, {
+            title: 'Accepted Participants',
+            filePrefix: 'accepted',
+            event: this.data,
+            waitingList: false,
+            additional_fields_schema: this.data.additional_fields,
+            participantsCtrl: this.participantsCtrl,
+          }) : '',
+          this.data.time_register_start ? m(ParticipantsTable, {
+            title: 'Participants on Waiting List',
+            filePrefix: 'waitinglist',
+            event: this.data,
+            waitingList: true,
+            additional_fields_schema: this.data.additional_fields,
+            participantsCtrl: this.participantsCtrl,
+          }) : '',
+        ]),
+      ]),
+      m('div', {
+        id: 'imgModal',
+        style: {
+          display: this.modalDisplay(),
+          position: 'fixed',
+          'z-index': '100',
+          'padding-top': '100px',
+          left: 0,
+          top: 0,
+          width: '100vw',
+          height: '100vh',
+          overflow: 'auto',
+          'background-color': 'rgba(0, 0, 0, 0.9)',
+        },
+      }, [
+        m('img', {
+          id: 'modalImg',
+          style: {
+            margin: 'auto',
+            display: 'block',
+            'max-width': '80vw',
+            'max-heigth': '80vh',
+          },
+        }),
+        m('div', {
+          onclick: () => {
+            this.modalDisplay('none');
+          },
+          style: {
+            top: '15px',
+            right: '35px',
+            color: '#f1f1f1',
+            transition: '0.3s',
+            'z-index': 10,
+            position: 'absolute',
+            'font-size': '40px',
+            'font-weight': 'bold',
+          },
+        }, 'x'),
+      ]),
+    ], [
+      m(Button, {
+        label: 'Clone Event',
+        border: true,
+        style: {
+          color: colors.light_blue,
+          'border-color': colors.light_blue,
+        },
+        events: {
+          // opens 'new event' ,
+          // coping All information but the 'event_id',  past dates and API generated properties
+          onclick: () => this.cloneEvent(),
+        },
+      }),
+    ]);
+  }
+}

src/groups/editGroup.js

+import m from 'mithril';
+import { TextField } from 'polythene-mithril';
+import { ListSelect, DatalistController, Select } from 'amiv-web-ui-components';
+// eslint-disable-next-line import/extensions
+import { apiUrl } from 'networkConfig';
+import { ResourceHandler } from '../auth';
+import EditView from '../views/editView';
+
+
+/**
+ * Table of all possible permissions to edit
+ *
+ * @class      PermissionEditor (name)
+ */
+class PermissionEditor {
+  oninit() {
+    // load all possible API endpoints, as permissions are defined at endpoint/resource level
+    m.request(apiUrl).then((response) => {
+      this.apiEndpoints = response._links.child;
+    });
+  }
+
+  /**
+   *
+   * @attr       {object}  permissions the permissions as defined so far for the group
+   * @attr       {function}  onChange  is called with the changed permissions any timne the
+   *                                   permissions are changed in this editor.
+   */
+  view({ attrs: { permissions, onChange } }) {
+    // make a local copy of permissions to edit
+    const internalPerm = Object.assign({}, permissions);
+
+    if (!this.apiEndpoints) return '';
+    return m('div', [
+      m('span', {
+        style: {
+          color: 'rgba(0, 0, 0, 0.54)',
+          'font-size': '10pt',
+        },
+      }, 'Permissions granted by membership in this group'),
+      m('div', {
+        style: {
+          padding: '10px',
+          border: '1px solid rgba(0, 0, 0, 0.54)',
+          'border-radius': '10px',
+        },
+      }, m('div', {
+        style: { display: 'flex', width: '100%', 'flex-flow': 'row wrap' },
+      }, this.apiEndpoints.map(apiEndpoint => m('div', {
+        style: { display: 'flex', width: '220px', 'padding-right': '20px' },
+      }, [
+        m(Select, {
+          label: apiEndpoint.title,
+          options: ['no permission', 'read', 'readwrite'],
+          default: 'no permission',
+          style: { width: '200px' },
+          onChange({ value }) {
+            if (value === 'no permission') {
+              // the api equivalent to no permission is to delete the key out of the dict
+              if (internalPerm[apiEndpoint.href]) delete internalPerm[apiEndpoint.href];
+            } else internalPerm[apiEndpoint.href] = value;
+            onChange(internalPerm);
+          },
+          value: internalPerm[apiEndpoint.href],
+        }),
+      ])))),
+    ]);
+  }
+}
+
+
+export default class NewGroup extends EditView {
+  constructor(vnode) {
+    super(vnode);
+    this.userHandler = new ResourceHandler('users', ['firstname', 'lastname', 'email', 'nethz']);
+    this.userController = new DatalistController((query, search) => this.userHandler.get(
+      { search, ...query },
+    ));
+  }
+
+  beforeSubmit() {
+    const data = Object.assign({}, this.form.data);
+    // exchange moderator object with string of id, will return null if moderator is null
+    data.moderator = data.moderator ? data.moderator._id : null;
+    this.submit(data).then(() => this.controller.changeModus('view'));
+  }
+
+  view() {
+    return this.layout([
+      ...this.form.renderSchema(['name', 'allow_self_enrollment', 'requires_storage']),
+      m('div', { style: { display: 'flex' } }, [
+        m(TextField, { label: 'Group Moderator: ', disabled: true, style: { width: '160px' } }),
+        m('div', { style: { 'flex-grow': 1 } }, m(ListSelect, {
+          controller: this.userController,
+          selection: this.form.data.moderator,
+          listTileAttrs: user => Object.assign({}, { title: `${user.firstname} ${user.lastname}` }),
+          selectedText: user => `${user.firstname} ${user.lastname}`,
+          onSelect: (data) => { this.form.data.moderator = data; },
+        })),
+      ]),
+      m(PermissionEditor, {
+        permissions: this.form.data.permissions,
+        onChange: (newPermissions) => { this.form.data.permissions = newPermissions; },
+      }),
+    ]);
+  }
+}

src/groups/item.js

+import m from 'mithril';
+import viewGroup from './viewGroup';
+import editGroup from './editGroup';
+import ItemController from '../itemcontroller';
+import { loadingScreen } from '../layout';
+
+export default class GroupItem {
+  constructor() {
+    this.controller = new ItemController('groups', { moderator: 1 });
+  }
+
+  view() {
+    if (!this.controller || (!this.controller.data && this.controller.modus !== 'new')) {
+      return m(loadingScreen);
+    }
+    if (this.controller.modus !== 'view') return m(editGroup, { controller: this.controller });
+    return m(viewGroup, { controller: this.controller });
+  }
+}

src/groups/list.js

+import m from 'mithril';
+import { Card, Button, ListTile } from 'polythene-mithril';
+import { DatalistController } from 'amiv-web-ui-components';
+import { loadingScreen } from '../layout';
+import { ResourceHandler, getCurrentUser } from '../auth';
+
+
+class GroupListItem {
+  view({ attrs: { name, _id } }) {
+    return m(ListTile, {
+      title: name,
+      hoverable: true,
+      rounded: true,
+      style: { width: '250px' },
+      url: {
+        href: `/groups/${_id}`,
+        oncreate: m.route.link,
+      },
+    });
+  }
+}
+
+class GroupListCard {
+  view({ attrs: { title, groups, onAdd = false } }) {
+    return m('div.maincontainer', { style: { 'margin-top': '5px' } }, m(Card, {
+      content: m('div', [
+        m('div', { style: { display: 'flex', 'align-items': 'center' } }, [
+          m('div.pe-card__title', title),
+          onAdd && m(Button, {
+            style: { 'margin-right': '20px' },
+            className: 'blue-button',
+            extraWide: true,
+            label: 'add',
+            events: { onclick: () => onAdd() },
+          }),
+        ]),
+        m('div', {
+          style: { display: 'flex', 'flex-wrap': 'wrap', margin: '0px 5px 5px 5px' },
+        }, groups.map(item => m(GroupListItem, { name: item.name, _id: item._id }))),
+      ]),
+    }));
+  }
+}
+
+export default class GroupList {
+  constructor() {
+    this.handler = new ResourceHandler('groups', ['name']);
+    this.ctrl = new DatalistController(
+      (query, search) => this.handler.get({ search, ...query }),
+      { sort: [['name', 1]] },
+    );
+    this.groups = [];
+    this.moderatedGroups = [];
+    this.ctrl.getFullList().then((list) => {
+      this.groups = list;
+      this.ctrl.setQuery({ where: { moderator: getCurrentUser() } });
+      this.ctrl.getFullList().then((moderatedList) => {
+        this.moderatedGroups = moderatedList;
+        m.redraw();
+      });
+    });
+  }
+
+  view() {
+    if (!this.groups) return m(loadingScreen);
+
+    return m('div', [
+      // groups moderated by the current user
+      this.moderatedGroups.length > 0
+      && m(GroupListCard, { title: 'moderated by you', groups: this.moderatedGroups }),
+      // all groups
+      m(GroupListCard, {
+        title: 'all groups',
+        groups: this.groups,
+        onAdd: () => { m.route.set('/newgroup'); },
+      }),
+    ]);
+  }
+}

src/groups/viewGroup.js

+import m from 'mithril';
+import {
+  Button,
+  Card,
+  Toolbar,
+  ToolbarTitle,
+  TextField,
+  Icon,
+} from 'polythene-mithril';
+import { DatalistController, ListSelect, DropdownCard, Chip } from 'amiv-web-ui-components';
+import { icons, Property } from '../views/elements';
+import { colors } from '../style';
+import ItemView from '../views/itemView';
+import TableView from '../views/tableView';
+import RelationlistController from '../relationlistcontroller';
+
+import { ResourceHandler } from '../auth';
+
+
+// Helper class to either display the signed up participants or those on the
+// waiting list.
+class MembersTable {
+  constructor({ attrs: { group, hasPatchRights } }) {
+    this.group_id = group;
+    this.hasPatchRights = hasPatchRights;
+    this.ctrl = new RelationlistController({
+      primary: 'groupmemberships', secondary: 'users', query: { where: { group } },
+    });
+    // true while in the modus of adding a member
+    this.addmode = false;
+    this.userHandler = new ResourceHandler('users');
+    this.userController = new DatalistController((query, search) => this.userHandler.get(
+      { search, ...query },
+    ));
+  }
+
+  itemRow(data) {
+    // TODO list should not have hardcoded size outside of stylesheet
+    return [
+      m('div', { style: { width: '18em' } }, `${data.user.firstname} ${data.user.lastname}`),
+      m('div', { style: { width: '9em' } }, data.user.email),
+      m('div', { style: { 'flex-grow': '100' } }),
+      this.hasPatchRights && m('div', m(Button, {
+        // Button to remove this groupmembership
+        className: 'red-row-button',
+        borders: false,
+        label: 'remove',
+        events: {
+          onclick: () => {
+            this.ctrl.handler.delete(data).then(() => {
+              this.ctrl.refresh();
+              m.redraw();
+            });
+          },
+        },
+      })),
+    ];
+  }
+
+  view() {
+    return m(Card, {
+      style: { height: '500px' },
+      content: m('div', [
+        this.addmode ? m(ListSelect, {
+          controller: this.userController,
+          listTileAttrs: user => Object.assign({}, { title: `${user.firstname} ${user.lastname}` }),
+          selectedText: user => `${user.firstname} ${user.lastname}`,
+          onSubmit: (user) => {
+            this.addmode = false;
+            this.ctrl.handler.post({
+              user: user._id,
+              group: this.group_id,
+            }).then(() => {
+              this.ctrl.refresh();
+              m.redraw();
+            });
+          },
+          onCancel: () => { this.addmode = false; m.redraw(); },
+        }) : '',
+        m(Toolbar, { compact: true }, [
+          m(ToolbarTitle, { text: 'Members' }),
+          this.hasPatchRights && m(Button, {
+            className: 'blue-button',
+            borders: true,
+            label: 'add',
+            events: { onclick: () => { this.addmode = true; } },
+          }),
+        ]),
+        m(TableView, {
+          tableHeight: '375px',
+          controller: this.ctrl,
+          keys: ['user.lastname', 'user.firstname', 'user.email'],
+          tileContent: data => this.itemRow(data),
+          clickOnRows: false,
+          titles: [
+            { text: 'Name', width: '18em' },
+            { text: 'Email', width: '9em' },
+          ],
+        }),
+      ]),
+    });
+  }
+}
+
+// Table for list of email adresses, both forward_to and receive
+class EmailTable {
+  constructor({ attrs: { onRemove = false } }) {
+    this.addmode = false;
+    this.dirty = false;
+    this.newvalue = '';
+    this.onRemove = onRemove;
+  }
+
+  item(data) {
+    return m('div', {
+      style: {
+        margin: '10px',
+        padding: '5px',
+        height: '30px',
+        'background-color': '#dddddd',
+      },
+    }, [
+      data,
+      this.onRemove && m(Icon, {
+        style: { 'margin-left': '3px' },
+        svg: { content: m.trust(icons.clear) },
+        size: 'small',
+        events: {
+          onclick: () => { this.onRemove(data); },
+        },
+      }),
+    ]);
+  }
+
+  view({ attrs: { list, title, style = {}, onSubmit = false } }) {
+    return m(Card, {
+      style: { height: '200px', ...style },
+      content: m('div', [
+        this.addmode ? m(Toolbar, {
+          compact: true,
+          style: { background: 'rgb(78, 242, 167)' },
+        }, [
+          m(TextField, {
+            label: 'enter email address',
+            type: 'email',
+            onChange: ({ value }) => {
+              this.dirty = value !== '';
+              this.newvalue = value;
+            },
+          }),
+          m(Button, {
+            label: this.dirty ? 'Submit' : 'Cancel',
+            className: 'blue-button',
+            events: {
+              onclick: () => {
+                if (this.dirty) {
+                  onSubmit(this.newvalue);
+                  this.addmode = false;
+                  this.newvalue = '';
+                } else {
+                  this.addmode = false;
+                }
+              },
+            },
+            value: this.newvalue,
+          }),
+        ]) : '',
+        m(Toolbar, { compact: true }, [
+          m(ToolbarTitle, { text: title }),
+          onSubmit && m(Button, {
+            className: 'blue-button',
+            borders: true,
+            label: 'add',
+            events: { onclick: () => { this.addmode = true; } },
+          }),
+        ]),
+        m('div', {
+          style: { padding: '10px', display: 'flex', 'flex-wrap': 'wrap' },
+        }, list.map(item => this.item(item))),
+      ]),
+    });
+  }
+}
+
+export default class viewGroup extends ItemView {
+  oninit() {
+    // load the number of members in this group
+    const handler = new ResourceHandler('groupmemberships');
+    handler.get({ where: { group: this.data._id } }).then((memberships) => {
+      this.numMembers = memberships._meta.total;
+      m.redraw();
+    });
+  }
+
+  view() {
+    // update the reference to the controller data, as this may be refreshed in between
+    this.data = this.controller.data;
+    const hasPatchRights = this.data._links.self.methods.indexOf('PATCH') > -1;
+    const stdMargin = { margin: '5px' };
+    return this.layout([
+      // this div is the title line
+      m('div.maincontainer', [
+        m('h1', this.data.name),
+        this.data.requires_storage && m(Chip, {
+          svg: icons.cloud,
+          svgColor: '#ffffff',
+          svgBackground: colors.orange,
+          ...stdMargin,
+        }, 'has a folder on the AMIV Cloud'),
+        m('div', { style: { display: 'flex' } }, [
+          ('numMembers' in this)
+            && m(Property, { title: 'Members', style: stdMargin }, this.numMembers),
+          this.data.moderator && m(Property, {
+            title: 'Moderator',
+            onclick: () => { m.route.set(`/users/${this.data.moderator._id}`); },
+            style: stdMargin,
+          }, `${this.data.moderator.firstname} ${this.data.moderator.lastname}`),
+        ]),
+      ]),
+      m('div.viewcontainer', [
+        // now-column layout: This first column are the members
+        m('div.viewcontainercolumn', [
+          this.data.permissions ? m(
+            DropdownCard,
+            { title: 'Permissions', style: { 'margin-bottom': '20px' } },
+            Object.keys(this.data.permissions)
+              .map(key => m(Property, { title: key }, this.data.permissions[key])),
+          ) : '',
+          m(MembersTable, { group: this.data._id, hasPatchRights }),
+        ]),
+        // the second column contains receive_from and forward_to emails
+        m('div.viewcontainercolumn', [
+          m(EmailTable, {
+            list: this.data.receive_from || [],
+            title: 'Receiving Email Adresses',
+            onSubmit: hasPatchRights ? (newItem) => {
+              const oldList = this.data.receive_from || [];
+              this.controller.patch({
+                _id: this.data._id,
+                _etag: this.data._etag,
+                receive_from: [...oldList, newItem],
+              });
+            } : undefined,
+            onRemove: hasPatchRights ? (item) => {
+              const oldList = this.data.receive_from;
+              // remove the first occurence of the given item-string
+              const index = oldList.indexOf(item);
+              if (index !== -1) {
+                oldList.splice(index, 1);
+                this.controller.patch({
+                  _id: this.data._id,
+                  _etag: this.data._etag,
+                  receive_from: oldList,
+                });
+              }
+            } : undefined,
+          }),
+          m(EmailTable, {
+            list: this.data.forward_to || [],
+            title: 'Forwards to Email Adresses',
+            style: { 'margin-top': '10px' },
+            onSubmit: hasPatchRights ? (newItem) => {
+              const oldList = this.data.forward_to || [];
+              this.controller.patch({
+                _id: this.data._id,
+                _etag: this.data._etag,
+                forward_to: [...oldList, newItem],
+              });
+            } : undefined,
+            onRemove: hasPatchRights ? (item) => {
+              const oldList = this.data.forward_to;
+              // remove the first occurence of the given item-string
+              const index = oldList.indexOf(item);
+              if (index !== -1) {
+                oldList.splice(index, 1);
+                this.controller.patch({
+                  _id: this.data._id,
+                  _etag: this.data._etag,
+                  forward_to: oldList,
+                });
+              }
+            } : undefined,
+          }),
+        ]),
+      ]),
+    ]);
+  }
+}

src/index.js

+import m from 'mithril';
+import { OauthRedirect } from './auth';
+import GroupList from './groups/list';
+import GroupItem from './groups/item';
+import BlacklistTable from './blacklist/viewBlacklist';
+import NewBlacklist from './blacklist/editBlacklist';
+import { UserItem, UserTable } from './users/userTool';
+import MembershipView from './membershipTool';
+import EventTable from './events/table';
+import EventItem from './events/item';
+import JobTable from './jobs/table';
+import JobItem from './jobs/item';
+import StudydocTable from './studydocs/list';
+import studydocItem from './studydocs/item';
+import InfoscreenTable from './infoscreen/table';
+import { Layout, Error404 } from './layout';
+import './style';
+
+const root = document.body;
+
+function layoutWith(view) {
+  return {
+    view() {
+      return m(Layout, m(view));
+    },
+  };
+}
+
+m.route.prefix('');
+m.route(root, '/events', {
+  '/users': layoutWith(UserTable),
+  '/users/:id': layoutWith(UserItem),
+  '/newuser': layoutWith(UserItem),
+  '/groupmemberships/:id': layoutWith(MembershipView),
+  '/events': layoutWith(EventTable),
+  '/events/:id': layoutWith(EventItem),
+  '/newevent': layoutWith(EventItem),
+  '/proposeevent': layoutWith(EventItem),
+  '/infoscreen': layoutWith(InfoscreenTable),
+  '/groups': layoutWith(GroupList),
+  '/groups/:id': layoutWith(GroupItem),
+  '/newgroup': layoutWith(GroupItem),
+  '/blacklist': layoutWith(BlacklistTable),
+  '/newblacklistentry': layoutWith(NewBlacklist),
+  '/oauthcallback': OauthRedirect,
+  '/joboffers': layoutWith(JobTable),
+  '/newjoboffer': layoutWith(JobItem),
+  '/joboffers/:id': layoutWith(JobItem),
+  '/studydocuments': layoutWith(StudydocTable),
+  '/studydocuments/:id': layoutWith(studydocItem),
+  '/newstudydocument': layoutWith(studydocItem),
+  '/404': layoutWith(Error404),
+});

src/infoscreen/table.js

+import m from 'mithril';
+import { Snackbar } from 'polythene-mithril';
+import { apiUrl } from 'networkConfig';
+import { DatalistController } from 'amiv-web-ui-components';
+import { ResourceHandler } from '../auth';
+import { dateFormatter } from '../utils';
+import TableView from '../views/tableView';
+
+const getImgUrl = img => `${apiUrl}${img.file}`;
+
+const exportCSV = (ctrl) => {
+  ctrl.getFullList().then(
+    (list) => {
+      let csv = '';
+      csv += [
+        'id',
+        'title_en',
+        'time_advertising_start',
+        'time_advertising_end',
+        'img_infoscreen_url',
+      ].join(';');
+      csv += '\n';
+      list.forEach((event) => {
+        const fields = [
+          event._id,
+          event.title_en.replace(';', ''),
+          event.time_advertising_start,
+          event.time_advertising_end,
+          event.img_infoscreen ? getImgUrl(event.img_infoscreen) : '',
+        ];
+        csv += fields.join(';');
+        csv += '\n';
+      });
+      const blob = new Blob([csv], { type: 'text/csv' });
+      const dl = window.document.createElement('a');
+      const now = new Date();
+      const pain = [
+        now.getFullYear().toString(),
+        now.getMonth().toString().padStart(2, '0'),
+        now.getDay().toString().padStart(2, '0')].join('-');
+      dl.href = window.URL.createObjectURL(blob);
+      dl.download = `infoscreen-export_${pain}.csv`;
+      dl.style.display = 'none';
+      document.body.appendChild(dl);
+      dl.click();
+      document.body.removeChild(dl);
+    },
+    () => {
+      Snackbar.show({
+        title: 'Export failed',
+        style: { color: 'red' },
+      });
+    },
+  );
+};
+
+
+export default class InfoscreenTable {
+  constructor() {
+    this.handler = new ResourceHandler('events');
+    this.ctrl = new DatalistController((query, search) => this.handler.get({ search, ...query }));
+  }
+
+
+  getItemData(data) {
+    return [
+      m('div', { style: { width: 'calc(100% - 36em)' } }, data.title_de || data.title_en),
+      m('div', { style: { width: '9em' } }, dateFormatter(data.time_start)),
+      m('div', { style: { width: '9em' } }, dateFormatter(data.time_advertising_start)),
+      m('div', { style: { width: '9em' } }, dateFormatter(data.time_advertising_end)),
+      m('div',
+        { style: { width: '9em' } },
+        data.img_infoscreen
+          ? m('a', { href: getImgUrl(data.img_infoscreen) }, data.img_infoscreen.name)
+          : 'no image'),
+    ];
+  }
+
+  view() {
+    const now = new Date();
+    return m(TableView, {
+      controller: this.ctrl,
+      keys: [
+        'titel_en',
+        'time_start',
+        'time_advertising_start',
+        'time_advertising_start',
+        'img_infoscreen'],
+      tileContent: this.getItemData,
+      titles: [
+        { text: 'Title', width: 'calc(100% - 36em)' },
+        { text: 'Start', width: '9em' },
+        { text: 'Advertising Start', width: '9em' },
+        { text: 'Advertising End', width: '9em' },
+        { text: 'Infoscreen Image', width: '9em' },
+      ],
+      filters: [[{
+        name: 'upcoming',
+        query: { time_start: { $gte: `${now.toISOString().slice(0, -5)}Z` } },
+      },
+      {
+        name: 'advertising upcoming',
+        query: { time_advertising_start: { $gte: `${now.toISOString().slice(0, -5)}Z` } },
+      },
+      {
+        name: 'advertising in progress',
+        query: {
+          time_advertising_start: { $lte: `${now.toISOString().slice(0, -5)}Z` },
+          time_advertising_end: { $gte: `${now.toISOString().slice(0, -5)}Z` },
+        },
+      },
+      ],
+      [{
+        name: 'has image',
+        query: { img_infoscreen: { $ne: null } },
+      }]],
+      buttons: [
+        { text: 'Export CSV', onclick: () => exportCSV(this.ctrl) },
+      ],
+      // per default, enable the 'upcoming' filter
+      initFilterIdxs: [[0, 0], [1, 0]],
+    });
+  }
+}

src/itemcontroller.js

+import m from 'mithril';
+import { ResourceHandler } from './auth';
+
+
+export default class ItemController {
+  constructor(resource, embedded) {
+    this.resource = resource;
+    this.id = m.route.param('id');
+    if (this.id) {
+      this.modus = 'view';
+    } else {
+      this.modus = 'new';
+      this.data = undefined;
+    }
+    this.handler = new ResourceHandler(resource);
+    this.embedded = embedded || {};
+    if (this.id) {
+      this.handler.getItem(this.id, this.embedded).then((item) => {
+        this.data = item;
+        m.redraw();
+      });
+    }
+  }
+
+  post(data) {
+    return new Promise((resolve, reject) => {
+      this.handler.post(data).then((response) => {
+        this.id = response._id;
+        resolve(response);
+      }).catch(reject);
+    });
+  }
+
+  patch(data) {
+    return new Promise((resolve, reject) => {
+      this.handler.patch(data).then((response) => {
+        resolve(response);
+      }).catch(reject);
+    });
+  }
+
+  cancel() {
+    if (this.modus === 'edit') this.changeModus('view');
+    else m.route.set(`/${this.resource}`);
+  }
+
+  changeModus(newModus) {
+    this.modus = newModus;
+    if (newModus === 'view') {
+      // reload item to current state, patches do not return embeddinds...
+      this.handler.getItem(this.id, this.embedded).then((item) => {
+        this.data = item;
+        m.redraw();
+      });
+    }
+  }
+}

src/jobs/editJob.js

+import m from 'mithril';
+import { FileInput } from 'amiv-web-ui-components';
+import EditView from '../views/editView';
+
+
+export default class newJob extends EditView {
+  beforeSubmit() {
+    // remove all unchanged files
+    if (this.form.data.pdf !== undefined
+      && (this.form.data.pdf === null || 'upload_date' in this.form.data.pdf)) {
+      delete this.form.data.pdf;
+    }
+    if (this.form.data.logo !== undefined
+        && (this.form.data.logo === null || 'upload_date' in this.form.data.logo)) {
+      delete this.form.data.logo;
+    }
+
+    // post everyhing together as FormData
+    const submitData = new FormData();
+    Object.keys(this.form.data).forEach((key) => {
+      submitData.append(key, this.form.data[key]);
+    });
+    this.submit(submitData).then(() => this.controller.changeModus('view'));
+  }
+
+  view() {
+    return this.layout([
+      ...this.form.renderSchema(['company']),
+      m(FileInput, this.form.bind({
+        name: 'logo',
+        label: 'Company Logo',
+        accept: 'image/png, image/jpeg',
+      })),
+      ...this.form.renderSchema(['show_website', 'time_end', 'title_en']),
+      this.form._renderField('description_en', {
+        multiLine: true,
+        rows: 5,
+        ...this.form.schema.properties.description_en,
+      }),
+      ...this.form.renderSchema(['title_de']),
+      this.form._renderField('description_de', {
+        multiLine: true,
+        rows: 5,
+        ...this.form.schema.properties.description_de,
+      }),
+      m(FileInput, this.form.bind({
+        name: 'pdf',
+        label: 'PDF',
+        accept: 'application/pdf',
+      })),
+    ]);
+  }
+}

src/jobs/item.js

+import m from 'mithril';
+import viewJob from './viewJob';
+import editJob from './editJob';
+import ItemController from '../itemcontroller';
+import { loadingScreen } from '../layout';
+
+export default class jobModal {
+  constructor() {
+    this.controller = new ItemController('joboffers');
+  }
+
+  view() {
+    if (!this.controller || (!this.controller.data && this.controller.modus !== 'new')) {
+      return m(loadingScreen);
+    }
+    if (this.controller.modus !== 'view') return m(editJob, { controller: this.controller });
+    return m(viewJob, { controller: this.controller });
+  }
+}

src/jobs/table.js

+import m from 'mithril';
+import { DatalistController } from 'amiv-web-ui-components';
+import TableView from '../views/tableView';
+import { dateFormatter } from '../utils';
+import { ResourceHandler } from '../auth';
+
+
+/* Table of all current Jobs
+ *
+ * Makes use of the standard TableView
+ */
+
+
+export default class JobTable {
+  constructor() {
+    this.handler = new ResourceHandler('joboffers');
+    this.ctrl = new DatalistController((query, search) => this.handler.get({ search, ...query }));
+  }
+
+  getItemData(data) {
+    return [
+      m('div', { style: { width: 'calc(100% - 30em)' } }, data.title_de || data.title_en),
+      m('div', { style: { width: '21em' } }, data.company),
+      m('div', { style: { width: '9em' } }, dateFormatter(data.time_end)),
+    ];
+  }
+
+  view(data) {
+    return m(TableView, {
+      controller: this.ctrl,
+      keys: [(data.title_de) ? 'title_de' : 'title_en', 'company', 'time_end'],
+      tileContent: this.getItemData,
+      titles: [
+        { text: 'Title', width: 'calc(100% - 30em)' },
+        { text: 'Company', width: '21em' },
+        { text: 'End', width: '9em' },
+      ],
+      onAdd: () => { m.route.set('/newjoboffer'); },
+    });
+  }
+}