text: Cards = new Mongo.Collection('cards');
  
  // XXX To improve pub/sub performances a card document should include a
  // de-normalized number of comments so we don't have to publish the whole list
  // of comments just to display the number of them in the board view.
  Cards.attachSchema(new SimpleSchema({
    title: {
      /**
       * the title of the card
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    archived: {
      /**
       * is the card archived
       */
      type: Boolean,
      autoValue() { // eslint-disable-line consistent-return
        if (this.isInsert && !this.isSet) {
          return false;
        }
      },
    },
    parentId: {
      /**
       * ID of the parent card
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    listId: {
      /**
       * List ID where the card is
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    swimlaneId: {
      /**
       * Swimlane ID where the card is
       */
      type: String,
    },
    // The system could work without this `boardId` information (we could deduce
    // the board identifier from the card), but it would make the system more
    // difficult to manage and less efficient.
    boardId: {
      /**
       * Board ID of the card
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    coverId: {
      /**
       * Cover ID of the card
       */
      type: String,
      optional: true,
      defaultValue: '',
  
    },
    color: {
      type: String,
      optional: true,
      allowedValues: [
        'white', 'green', 'yellow', 'orange', 'red', 'purple',
        'blue', 'sky', 'lime', 'pink', 'black',
        'silver', 'peachpuff', 'crimson', 'plum', 'darkgreen',
        'slateblue', 'magenta', 'gold', 'navy', 'gray',
        'saddlebrown', 'paleturquoise', 'mistyrose', 'indigo',
      ],
    },
    createdAt: {
      /**
       * creation date
       */
      type: Date,
      autoValue() { // eslint-disable-line consistent-return
        if (this.isInsert) {
          return new Date();
        } else {
          this.unset();
        }
      },
    },
    customFields: {
      /**
       * list of custom fields
       */
      type: [Object],
      optional: true,
      defaultValue: [],
    },
    'customFields.$': {
      type: new SimpleSchema({
        _id: {
          /**
           * the ID of the related custom field
           */
          type: String,
          optional: true,
          defaultValue: '',
        },
        value: {
          /**
           * value attached to the custom field
           */
          type: Match.OneOf(String, Number, Boolean, Date),
          optional: true,
          defaultValue: '',
        },
      }),
    },
    dateLastActivity: {
      /**
       * Date of last activity
       */
      type: Date,
      autoValue() {
        return new Date();
      },
    },
    description: {
      /**
       * description of the card
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    requestedBy: {
      /**
       * who requested the card (ID of the user)
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    assignedBy: {
      /**
       * who assigned the card (ID of the user)
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
    labelIds: {
      /**
       * list of labels ID the card has
       */
      type: [String],
      optional: true,
      defaultValue: [],
    },
    members: {
      /**
       * list of members (user IDs)
       */
      type: [String],
      optional: true,
      defaultValue: [],
    },
    receivedAt: {
      /**
       * Date the card was received
       */
      type: Date,
      optional: true,
    },
    startAt: {
      /**
       * Date the card was started to be worked on
       */
      type: Date,
      optional: true,
    },
    dueAt: {
      /**
       * Date the card is due
       */
      type: Date,
      optional: true,
    },
    endAt: {
      /**
       * Date the card ended
       */
      type: Date,
      optional: true,
    },
    spentTime: {
      /**
       * How much time has been spent on this
       */
      type: Number,
      decimal: true,
      optional: true,
      defaultValue: 0,
    },
    isOvertime: {
      /**
       * is the card over time?
       */
      type: Boolean,
      defaultValue: false,
      optional: true,
    },
    // XXX Should probably be called `authorId`. Is it even needed since we have
    // the `members` field?
    userId: {
      /**
       * user ID of the author of the card
       */
      type: String,
      autoValue() { // eslint-disable-line consistent-return
        if (this.isInsert && !this.isSet) {
          return this.userId;
        }
      },
    },
    sort: {
      /**
       * Sort value
       */
      type: Number,
      decimal: true,
      defaultValue: '',
    },
    subtaskSort: {
      /**
       * subtask sort value
       */
      type: Number,
      decimal: true,
      defaultValue: -1,
      optional: true,
    },
    type: {
      /**
       * type of the card
       */
      type: String,
      defaultValue: 'cardType-card',
    },
    linkedId: {
      /**
       * ID of the linked card
       */
      type: String,
      optional: true,
      defaultValue: '',
    },
  }));
  
  Cards.allow({
    insert(userId, doc) {
      return allowIsBoardMember(userId, Boards.findOne(doc.boardId));
    },
    update(userId, doc) {
      return allowIsBoardMember(userId, Boards.findOne(doc.boardId));
    },
    remove(userId, doc) {
      return allowIsBoardMember(userId, Boards.findOne(doc.boardId));
    },
    fetch: ['boardId'],
  });
  
  Cards.helpers({
    copy(boardId, swimlaneId, listId) {
      const oldBoard = Boards.findOne(this.boardId);
      const oldBoardLabels = oldBoard.labels;
      // Get old label names
      const oldCardLabels = _.pluck(_.filter(oldBoardLabels, (label) => {
        return _.contains(this.labelIds, label._id);
      }), 'name');
  
      const newBoard = Boards.findOne(boardId);
      const newBoardLabels = newBoard.labels;
      const newCardLabels = _.pluck(_.filter(newBoardLabels, (label) => {
        return _.contains(oldCardLabels, label.name);
      }), '_id');
  
      const oldId = this._id;
      const oldCard = Cards.findOne(oldId);
  
      // Copy Custom Fields
      if (oldBoard._id !== boardId) {
        CustomFields.find({
          _id: {$in: oldCard.customFields.map((cf) => { return cf._id; })},
        }).forEach((cf) => {
          if (!_.contains(cf.boardIds, boardId))
            cf.addBoard(boardId);
        });
      }
  
      delete this._id;
      delete this.labelIds;
      this.labelIds = newCardLabels;
      this.boardId = boardId;
      this.swimlaneId = swimlaneId;
      this.listId = listId;
      const _id = Cards.insert(this);
  
      // Copy attachments
      oldCard.attachments().forEach((att) => {
        att.cardId = _id;
        delete att._id;
        return Attachments.insert(att);
      });
  
      // copy checklists
      Checklists.find({cardId: oldId}).forEach((ch) => {
        ch.copy(_id);
      });
  
      // copy subtasks
      Cards.find({parentId: oldId}).forEach((subtask) => {
        subtask.parentId = _id;
        subtask._id = null;
        Cards.insert(subtask);
      });
  
      // copy card comments
      CardComments.find({cardId: oldId}).forEach((cmt) => {
        cmt.copy(_id);
      });
  
      return _id;
    },
  
    list() {
      return Lists.findOne(this.listId);
    },
  
    board() {
      return Boards.findOne(this.boardId);
    },
  
    labels() {
      const boardLabels = this.board().labels;
      const cardLabels = _.filter(boardLabels, (label) => {
        return _.contains(this.labelIds, label._id);
      });
      return cardLabels;
    },
  
    hasLabel(labelId) {
      return _.contains(this.labelIds, labelId);
    },
  
    user() {
      return Users.findOne(this.userId);
    },
  
    isAssigned(memberId) {
      return _.contains(this.getMembers(), memberId);
    },
  
    activities() {
      if (this.isLinkedCard()) {
        return Activities.find({cardId: this.linkedId}, {sort: {createdAt: -1}});
      } else if (this.isLinkedBoard()) {
        return Activities.find({boardId: this.linkedId}, {sort: {createdAt: -1}});
      } else {
        return Activities.find({cardId: this._id}, {sort: {createdAt: -1}});
      }
    },
  
    comments() {
      if (this.isLinkedCard()) {
        return CardComments.find({cardId: this.linkedId}, {sort: {createdAt: -1}});
      } else {
        return CardComments.find({cardId: this._id}, {sort: {createdAt: -1}});
      }
    },
  
    attachments() {
      if (this.isLinkedCard()) {
        return Attachments.find({cardId: this.linkedId}, {sort: {uploadedAt: -1}});
      } else {
        return Attachments.find({cardId: this._id}, {sort: {uploadedAt: -1}});
      }
    },
  
    cover() {
      const cover = Attachments.findOne(this.coverId);
      // if we return a cover before it is fully stored, we will get errors when we try to display it
      // todo XXX we could return a default "upload pending" image in the meantime?
      return cover && cover.url() && cover;
    },
  
    checklists() {
      if (this.isLinkedCard()) {
        return Checklists.find({cardId: this.linkedId}, {sort: { sort: 1 } });
      } else {
        return Checklists.find({cardId: this._id}, {sort: { sort: 1 } });
      }
    },
  
    checklistItemCount() {
      const checklists = this.checklists().fetch();
      return checklists.map((checklist) => {
        return checklist.itemCount();
      }).reduce((prev, next) => {
        return prev + next;
      }, 0);
    },
  
    checklistFinishedCount() {
      const checklists = this.checklists().fetch();
      return checklists.map((checklist) => {
        return checklist.finishedCount();
      }).reduce((prev, next) => {
        return prev + next;
      }, 0);
    },
  
    checklistFinished() {
      return this.hasChecklist() && this.checklistItemCount() === this.checklistFinishedCount();
    },
  
    hasChecklist() {
      return this.checklistItemCount() !== 0;
    },
  
    subtasks() {
      return Cards.find({
        parentId: this._id,
        archived: false,
      }, {
        sort: {
          sort: 1,
        },
      });
    },
  
    allSubtasks() {
      return Cards.find({
        parentId: this._id,
        archived: false,
      }, {
        sort: {
          sort: 1,
        },
      });
    },
  
    subtasksCount() {
      return Cards.find({
        parentId: this._id,
        archived: false,
      }).count();
    },
  
    subtasksFinishedCount() {
      return Cards.find({
        parentId: this._id,
        archived: true,
      }).count();
    },
  
    subtasksFinished() {
      const finishCount = this.subtasksFinishedCount();
      return finishCount > 0 && this.subtasksCount() === finishCount;
    },
  
    allowsSubtasks() {
      return this.subtasksCount() !== 0;
    },
  
    customFieldIndex(customFieldId) {
      return _.pluck(this.customFields, '_id').indexOf(customFieldId);
    },
  
    // customFields with definitions
    customFieldsWD() {
  
      // get all definitions
      const definitions = CustomFields.find({
        boardIds: {$in: [this.boardId]},
      }).fetch();
  
      // match right definition to each field
      if (!this.customFields) return [];
      return this.customFields.map((customField) => {
        const definition = definitions.find((definition) => {
          return definition._id === customField._id;
        });
        if (!definition) {
          return {};
        }
        //search for "True Value" which is for DropDowns other then the Value (which is the id)
        let trueValue = customField.value;
        if (definition.settings.dropdownItems && definition.settings.dropdownItems.length > 0) {
          for (let i = 0; i < definition.settings.dropdownItems.length; i++) {
            if (definition.settings.dropdownItems[i]._id === customField.value) {
              trueValue = definition.settings.dropdownItems[i].name;
            }
          }
        }
        return {
          _id: customField._id,
          value: customField.value,
          trueValue,
          definition,
        };
      });
    },
  
    colorClass() {
      if (this.color)
        return this.color;
      return '';
    },
  
    absoluteUrl() {
      const board = this.board();
      return FlowRouter.url('card', {
        boardId: board._id,
        slug: board.slug,
        cardId: this._id,
      });
    },
  
    canBeRestored() {
      const list = Lists.findOne({
        _id: this.listId,
      });
      if (!list.getWipLimit('soft') && list.getWipLimit('enabled') && list.getWipLimit('value') === list.cards().count()) {
        return false;
      }
      return true;
    },
  
    parentCard() {
      if (this.parentId === '') {
        return null;
      }
      return Cards.findOne(this.parentId);
    },
  
    parentCardName() {
      let result = '';
      if (this.parentId !== '') {
        const card = Cards.findOne(this.parentId);
        if (card) {
          result = card.title;
        }
      }
      return result;
    },
  
    parentListId() {
      const result = [];
      let crtParentId = this.parentId;
      while (crtParentId !== '') {
        const crt = Cards.findOne(crtParentId);
        if ((crt === null) || (crt === undefined)) {
          // maybe it has been deleted
          break;
        }
        if (crtParentId in result) {
          // circular reference
          break;
        }
        result.unshift(crtParentId);
        crtParentId = crt.parentId;
      }
      return result;
    },
  
    parentList() {
      const resultId = [];
      const result = [];
      let crtParentId = this.parentId;
      while (crtParentId !== '') {
        const crt = Cards.findOne(crtParentId);
        if ((crt === null) || (crt === undefined)) {
          // maybe it has been deleted
          break;
        }
        if (crtParentId in resultId) {
          // circular reference
          break;
        }
        resultId.unshift(crtParentId);
        result.unshift(crt);
        crtParentId = crt.parentId;
      }
      return result;
    },
  
    parentString(sep) {
      return this.parentList().map(function(elem) {
        return elem.title;
      }).join(sep);
    },
  
    isTopLevel() {
      return this.parentId === '';
    },
  
    isLinkedCard() {
      return this.type === 'cardType-linkedCard';
    },
  
    isLinkedBoard() {
      return this.type === 'cardType-linkedBoard';
    },
  
    isLinked() {
      return this.isLinkedCard() || this.isLinkedBoard();
    },
  
    setDescription(description) {
      if (this.isLinkedCard()) {
        return Cards.update({_id: this.linkedId}, {$set: {description}});
      } else if (this.isLinkedBoard()) {
        return Boards.update({_id: this.linkedId}, {$set: {description}});
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {description}}
        );
      }
    },
  
    getDescription() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({_id: this.linkedId});
        if (card && card.description)
          return card.description;
        else
          return null;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        if (board && board.description)
          return board.description;
        else
          return null;
      } else if (this.description) {
        return this.description;
      } else {
        return null;
      }
    },
  
    getMembers() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({_id: this.linkedId});
        return card.members;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        return board.activeMembers().map((member) => {
          return member.userId;
        });
      } else {
        return this.members;
      }
    },
  
    assignMember(memberId) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          { $addToSet: { members: memberId }}
        );
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        return board.addMember(memberId);
      } else {
        return Cards.update(
          { _id: this._id },
          { $addToSet: { members: memberId}}
        );
      }
    },
  
    unassignMember(memberId) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          { $pull: { members: memberId }}
        );
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        return board.removeMember(memberId);
      } else {
        return Cards.update(
          { _id: this._id },
          { $pull: { members: memberId}}
        );
      }
    },
  
    toggleMember(memberId) {
      if (this.getMembers() && this.getMembers().indexOf(memberId) > -1) {
        return this.unassignMember(memberId);
      } else {
        return this.assignMember(memberId);
      }
    },
  
    getReceived() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({_id: this.linkedId});
        return card.receivedAt;
      } else {
        return this.receivedAt;
      }
    },
  
    setReceived(receivedAt) {
      if (this.isLinkedCard()) {
        return Cards.update(
          {_id: this.linkedId},
          {$set: {receivedAt}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {receivedAt}}
        );
      }
    },
  
    getStart() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({_id: this.linkedId});
        return card.startAt;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        return board.startAt;
      } else {
        return this.startAt;
      }
    },
  
    setStart(startAt) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {startAt}}
        );
      } else if (this.isLinkedBoard()) {
        return Boards.update(
          {_id: this.linkedId},
          {$set: {startAt}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {startAt}}
        );
      }
    },
  
    getDue() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({_id: this.linkedId});
        return card.dueAt;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        return board.dueAt;
      } else {
        return this.dueAt;
      }
    },
  
    setDue(dueAt) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {dueAt}}
        );
      } else if (this.isLinkedBoard()) {
        return Boards.update(
          {_id: this.linkedId},
          {$set: {dueAt}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {dueAt}}
        );
      }
    },
  
    getEnd() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({_id: this.linkedId});
        return card.endAt;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({_id: this.linkedId});
        return board.endAt;
      } else {
        return this.endAt;
      }
    },
  
    setEnd(endAt) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {endAt}}
        );
      } else if (this.isLinkedBoard()) {
        return Boards.update(
          {_id: this.linkedId},
          {$set: {endAt}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {endAt}}
        );
      }
    },
  
    getIsOvertime() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        return card.isOvertime;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({ _id: this.linkedId});
        return board.isOvertime;
      } else {
        return this.isOvertime;
      }
    },
  
    setIsOvertime(isOvertime) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {isOvertime}}
        );
      } else if (this.isLinkedBoard()) {
        return Boards.update(
          {_id: this.linkedId},
          {$set: {isOvertime}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {isOvertime}}
        );
      }
    },
  
    getSpentTime() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        return card.spentTime;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({ _id: this.linkedId});
        return board.spentTime;
      } else {
        return this.spentTime;
      }
    },
  
    setSpentTime(spentTime) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {spentTime}}
        );
      } else if (this.isLinkedBoard()) {
        return Boards.update(
          {_id: this.linkedId},
          {$set: {spentTime}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {spentTime}}
        );
      }
    },
  
    getId() {
      if (this.isLinked()) {
        return this.linkedId;
      } else {
        return this._id;
      }
    },
  
    getTitle() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        return card.title;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({ _id: this.linkedId});
        return board.title;
      } else {
        return this.title;
      }
    },
  
    getBoardTitle() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        const board = Boards.findOne({ _id: card.boardId });
        return board.title;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({ _id: this.linkedId});
        return board.title;
      } else {
        const board = Boards.findOne({ _id: this.boardId });
        return board.title;
      }
    },
  
    setTitle(title) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {title}}
        );
      } else if (this.isLinkedBoard()) {
        return Boards.update(
          {_id: this.linkedId},
          {$set: {title}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {title}}
        );
      }
    },
  
    getArchived() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        return card.archived;
      } else if (this.isLinkedBoard()) {
        const board = Boards.findOne({ _id: this.linkedId});
        return board.archived;
      } else {
        return this.archived;
      }
    },
  
    setRequestedBy(requestedBy) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {requestedBy}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {requestedBy}}
        );
      }
    },
  
    getRequestedBy() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        return card.requestedBy;
      } else  {
        return this.requestedBy;
      }
    },
  
    setAssignedBy(assignedBy) {
      if (this.isLinkedCard()) {
        return Cards.update(
          { _id: this.linkedId },
          {$set: {assignedBy}}
        );
      } else {
        return Cards.update(
          {_id: this._id},
          {$set: {assignedBy}}
        );
      }
    },
  
    getAssignedBy() {
      if (this.isLinkedCard()) {
        const card = Cards.findOne({ _id: this.linkedId });
        return card.assignedBy;
      } else  {
        return this.assignedBy;
      }
    },
  
    isTemplateCard() {
      return this.type === 'template-card';
    },
  });
  
  Cards.mutations({
    applyToChildren(funct) {
      Cards.find({
        parentId: this._id,
      }).forEach((card) => {
        funct(card);
      });
    },
  
    archive() {
      this.applyToChildren((card) => {
        return card.archive();
      });
      return {
        $set: {
          archived: true,
        },
      };
    },
  
    restore() {
      this.applyToChildren((card) => {
        return card.restore();
      });
      return {
        $set: {
          archived: false,
        },
      };
    },
  
    move(boardId, swimlaneId, listId, sort) {
      // Copy Custom Fields
      if (this.boardId !== boardId) {
        CustomFields.find({
          _id: {$in: this.customFields.map((cf) => { return cf._id; })},
        }).forEach((cf) => {
          if (!_.contains(cf.boardIds, boardId))
            cf.addBoard(boardId);
        });
      }
  
      // Get label names
      const oldBoard = Boards.findOne(this.boardId);
      const oldBoardLabels = oldBoard.labels;
      const oldCardLabels = _.pluck(_.filter(oldBoardLabels, (label) => {
        return _.contains(this.labelIds, label._id);
      }), 'name');
  
      const newBoard = Boards.findOne(boardId);
      const newBoardLabels = newBoard.labels;
      const newCardLabelIds = _.pluck(_.filter(newBoardLabels, (label) => {
        return label.name && _.contains(oldCardLabels, label.name);
      }), '_id');
  
      const mutatedFields = {
        boardId,
        swimlaneId,
        listId,
        sort,
        labelIds: newCardLabelIds,
      };
  
      Cards.update(this._id, {
        $set: mutatedFields,
      });
    },
  
    addLabel(labelId) {
      return {
        $addToSet: {
          labelIds: labelId,
        },
      };
    },
  
    removeLabel(labelId) {
      return {
        $pull: {
          labelIds: labelId,
        },
      };
    },
  
    toggleLabel(labelId) {
      if (this.labelIds && this.labelIds.indexOf(labelId) > -1) {
        return this.removeLabel(labelId);
      } else {
        return this.addLabel(labelId);
      }
    },
  
    setColor(newColor) {
      if (newColor === 'white') {
        newColor = null;
      }
      return {
        $set: {
          color: newColor,
        },
      };
    },
  
    assignMember(memberId) {
      return {
        $addToSet: {
          members: memberId,
        },
      };
    },
  
    unassignMember(memberId) {
      return {
        $pull: {
          members: memberId,
        },
      };
    },
  
    toggleMember(memberId) {
      if (this.members && this.members.indexOf(memberId) > -1) {
        return this.unassignMember(memberId);
      } else {
        return this.assignMember(memberId);
      }
    },
  
    assignCustomField(customFieldId) {
      return {
        $addToSet: {
          customFields: {
            _id: customFieldId,
            value: null,
          },
        },
      };
    },
  
    unassignCustomField(customFieldId) {
      return {
        $pull: {
          customFields: {
            _id: customFieldId,
          },
        },
      };
    },
  
    toggleCustomField(customFieldId) {
      if (this.customFields && this.customFieldIndex(customFieldId) > -1) {
        return this.unassignCustomField(customFieldId);
      } else {
        return this.assignCustomField(customFieldId);
      }
    },
  
    setCustomField(customFieldId, value) {
      // todo
      const index = this.customFieldIndex(customFieldId);
      if (index > -1) {
        const update = {
          $set: {},
        };
        update.$set[`customFields.${index}.value`] = value;
        return update;
      }
      // TODO
      // Ignatz 18.05.2018: Return null to silence ESLint. No Idea if that is correct
      return null;
    },
  
    setCover(coverId) {
      return {
        $set: {
          coverId,
        },
      };
    },
  
    unsetCover() {
      return {
        $unset: {
          coverId: '',
        },
      };
    },
  
    setReceived(receivedAt) {
      return {
        $set: {
          receivedAt,
        },
      };
    },
  
    unsetReceived() {
      return {
        $unset: {
          receivedAt: '',
        },
      };
    },
  
    setStart(startAt) {
      return {
        $set: {
          startAt,
        },
      };
    },
  
    unsetStart() {
      return {
        $unset: {
          startAt: '',
        },
      };
    },
  
    setDue(dueAt) {
      return {
        $set: {
          dueAt,
        },
      };
    },
  
    unsetDue() {
      return {
        $unset: {
          dueAt: '',
        },
      };
    },
  
    setEnd(endAt) {
      return {
        $set: {
          endAt,
        },
      };
    },
  
    unsetEnd() {
      return {
        $unset: {
          endAt: '',
        },
      };
    },
  
    setOvertime(isOvertime) {
      return {
        $set: {
          isOvertime,
        },
      };
    },
  
    setSpentTime(spentTime) {
      return {
        $set: {
          spentTime,
        },
      };
    },
  
    unsetSpentTime() {
      return {
        $unset: {
          spentTime: '',
          isOvertime: false,
        },
      };
    },
  
    setParentId(parentId) {
      return {
        $set: {
          parentId,
        },
      };
    },
  });
  
  //FUNCTIONS FOR creation of Activities
  
  function updateActivities(doc, fieldNames, modifier) {
    if (_.contains(fieldNames, 'labelIds') && _.contains(fieldNames, 'boardId')) {
      Activities.find({
        activityType: 'addedLabel',
        cardId: doc._id,
      }).forEach((a) => {
        const lidx = doc.labelIds.indexOf(a.labelId);
        if (lidx !== -1 && modifier.$set.labelIds.length > lidx) {
          Activities.update(a._id, {
            $set: {
              labelId: modifier.$set.labelIds[doc.labelIds.indexOf(a.labelId)],
              boardId: modifier.$set.boardId,
            },
          });
        } else {
          Activities.remove(a._id);
        }
      });
    } else if (_.contains(fieldNames, 'boardId')) {
      Activities.remove({
        activityType: 'addedLabel',
        cardId: doc._id,
      });
    }
  }
  
  function cardMove(userId, doc, fieldNames, oldListId, oldSwimlaneId, oldBoardId) {
    if (_.contains(fieldNames, 'boardId') && (doc.boardId !== oldBoardId)) {
      Activities.insert({
        userId,
        activityType: 'moveCardBoard',
        boardName: Boards.findOne(doc.boardId).title,
        boardId: doc.boardId,
        oldBoardId,
        oldBoardName: Boards.findOne(oldBoardId).title,
        cardId: doc._id,
        swimlaneName: Swimlanes.findOne(doc.swimlaneId).title,
        swimlaneId: doc.swimlaneId,
        oldSwimlaneId,
      });
    } else if ((_.contains(fieldNames, 'listId') && doc.listId !== oldListId) ||
      (_.contains(fieldNames, 'swimlaneId') && doc.swimlaneId !== oldSwimlaneId)){
      Activities.insert({
        userId,
        oldListId,
        activityType: 'moveCard',
        listName: Lists.findOne(doc.listId).title,
        listId: doc.listId,
        boardId: doc.boardId,
        cardId: doc._id,
        swimlaneName: Swimlanes.findOne(doc.swimlaneId).title,
        swimlaneId: doc.swimlaneId,
        oldSwimlaneId,
      });
    }
  }
  
  function cardState(userId, doc, fieldNames) {
    if (_.contains(fieldNames, 'archived')) {
      if (doc.archived) {
        Activities.insert({
          userId,
          activityType: 'archivedCard',
          listName: Lists.findOne(doc.listId).title,
          boardId: doc.boardId,
          listId: doc.listId,
          cardId: doc._id,
        });
      } else {
        Activities.insert({
          userId,
          activityType: 'restoredCard',
          boardId: doc.boardId,
          listName: Lists.findOne(doc.listId).title,
          listId: doc.listId,
          cardId: doc._id,
        });
      }
    }
  }
  
  function cardMembers(userId, doc, fieldNames, modifier) {
    if (!_.contains(fieldNames, 'members'))
      return;
    let memberId;
    // Say hello to the new member
    if (modifier.$addToSet && modifier.$addToSet.members) {
      memberId = modifier.$addToSet.members;
      const username = Users.findOne(memberId).username;
      if (!_.contains(doc.members, memberId)) {
        Activities.insert({
          userId,
          username,
          activityType: 'joinMember',
          boardId: doc.boardId,
          cardId: doc._id,
        });
      }
    }
  
    // Say goodbye to the former member
    if (modifier.$pull && modifier.$pull.members) {
      memberId = modifier.$pull.members;
      const username = Users.findOne(memberId).username;
      // Check that the former member is member of the card
      if (_.contains(doc.members, memberId)) {
        Activities.insert({
          userId,
          username,
          activityType: 'unjoinMember',
          boardId: doc.boardId,
          cardId: doc._id,
        });
      }
    }
  }
  
  function cardLabels(userId, doc, fieldNames, modifier) {
    if (!_.contains(fieldNames, 'labelIds'))
      return;
    let labelId;
    // Say hello to the new label
    if (modifier.$addToSet && modifier.$addToSet.labelIds) {
      labelId = modifier.$addToSet.labelIds;
      if (!_.contains(doc.labelIds, labelId)) {
        const act = {
          userId,
          labelId,
          activityType: 'addedLabel',
          boardId: doc.boardId,
          cardId: doc._id,
        };
        Activities.insert(act);
      }
    }
  
    // Say goodbye to the label
    if (modifier.$pull && modifier.$pull.labelIds) {
      labelId = modifier.$pull.labelIds;
      // Check that the former member is member of the card
      if (_.contains(doc.labelIds, labelId)) {
        Activities.insert({
          userId,
          labelId,
          activityType: 'removedLabel',
          boardId: doc.boardId,
          cardId: doc._id,
        });
      }
    }
  }
  
  function cardCustomFields(userId, doc, fieldNames, modifier) {
    if (!_.contains(fieldNames, 'customFields'))
      return;
  
    // Say hello to the new customField value
    if (modifier.$set) {
      _.each(modifier.$set, (value, key) => {
        if (key.startsWith('customFields')) {
          const dotNotation = key.split('.');
  
          // only individual changes are registered
          if (dotNotation.length > 1) {
            const customFieldId = doc.customFields[dotNotation[1]]._id;
            const act = {
              userId,
              customFieldId,
              value,
              activityType: 'setCustomField',
              boardId: doc.boardId,
              cardId: doc._id,
            };
            Activities.insert(act);
          }
        }
      });
    }
  
    // Say goodbye to the former customField value
    if (modifier.$unset) {
      _.each(modifier.$unset, (value, key) => {
        if (key.startsWith('customFields')) {
          const dotNotation = key.split('.');
  
          // only individual changes are registered
          if (dotNotation.length > 1) {
            const customFieldId = doc.customFields[dotNotation[1]]._id;
            const act = {
              userId,
              customFieldId,
              activityType: 'unsetCustomField',
              boardId: doc.boardId,
              cardId: doc._id,
            };
            Activities.insert(act);
          }
        }
      });
    }
  }
  
  function cardCreation(userId, doc) {
    Activities.insert({
      userId,
      activityType: 'createCard',
      boardId: doc.boardId,
      listName: Lists.findOne(doc.listId).title,
      listId: doc.listId,
      cardId: doc._id,
      cardTitle:doc.title,
      swimlaneName: Swimlanes.findOne(doc.swimlaneId).title,
      swimlaneId: doc.swimlaneId,
    });
  }
  
  function cardRemover(userId, doc) {
    Activities.remove({
      cardId: doc._id,
    });
    Checklists.remove({
      cardId: doc._id,
    });
    Cards.remove({
      parentId: doc._id,
    });
    CardComments.remove({
      cardId: doc._id,
    });
    Attachments.remove({
      cardId: doc._id,
    });
  }
  
  if (Meteor.isServer) {
    // Cards are often fetched within a board, so we create an index to make these
    // queries more efficient.
    Meteor.startup(() => {
      Cards._collection._ensureIndex({boardId: 1, createdAt: -1});
      // https://github.com/wekan/wekan/issues/1863
      // Swimlane added a new field in the cards collection of mongodb named parentId.
      // When loading a board, mongodb is searching for every cards, the id of the parent (in the swinglanes collection).
      // With a huge database, this result in a very slow app and high CPU on the mongodb side.
      // To correct it, add Index to parentId:
      Cards._collection._ensureIndex({parentId: 1});
    });
  
    Cards.after.insert((userId, doc) => {
      cardCreation(userId, doc);
    });
  
    // New activity for card (un)archivage
    Cards.after.update((userId, doc, fieldNames) => {
      cardState(userId, doc, fieldNames);
    });
  
    //New activity for card moves
    Cards.after.update(function(userId, doc, fieldNames) {
      const oldListId = this.previous.listId;
      const oldSwimlaneId = this.previous.swimlaneId;
      const oldBoardId = this.previous.boardId;
      cardMove(userId, doc, fieldNames, oldListId, oldSwimlaneId, oldBoardId);
    });
  
    // Add a new activity if we add or remove a member to the card
    Cards.before.update((userId, doc, fieldNames, modifier) => {
      cardMembers(userId, doc, fieldNames, modifier);
      updateActivities(doc, fieldNames, modifier);
    });
  
    // Add a new activity if we add or remove a label to the card
    Cards.before.update((userId, doc, fieldNames, modifier) => {
      cardLabels(userId, doc, fieldNames, modifier);
    });
  
    // Add a new activity if we edit a custom field
    Cards.before.update((userId, doc, fieldNames, modifier) => {
      cardCustomFields(userId, doc, fieldNames, modifier);
    });
  
    // Remove all activities associated with a card if we remove the card
    // Remove also card_comments / checklists / attachments
    Cards.after.remove((userId, doc) => {
      cardRemover(userId, doc);
    });
  }
  //SWIMLANES REST API
  if (Meteor.isServer) {
    /**
     * @operation get_swimlane_cards
     * @summary get all cards attached to a swimlane
     *
     * @param {string} boardId the board ID
     * @param {string} swimlaneId the swimlane ID
     * @return_type [{_id: string,
     *                title: string,
     *                description: string,
     *                listId: string}]
     */
    JsonRoutes.add('GET', '/api/boards/:boardId/swimlanes/:swimlaneId/cards', function(req, res) {
      const paramBoardId = req.params.boardId;
      const paramSwimlaneId = req.params.swimlaneId;
      Authentication.checkBoardAccess(req.userId, paramBoardId);
      JsonRoutes.sendResult(res, {
        code: 200,
        data: Cards.find({
          boardId: paramBoardId,
          swimlaneId: paramSwimlaneId,
          archived: false,
        }).map(function(doc) {
          return {
            _id: doc._id,
            title: doc.title,
            description: doc.description,
            listId: doc.listId,
          };
        }),
      });
    });
  }
  //LISTS REST API
  if (Meteor.isServer) {
    /**
     * @operation get_all_cards
     * @summary Get all Cards attached to a List
     *
     * @param {string} boardId the board ID
     * @param {string} listId the list ID
     * @return_type [{_id: string,
     *                title: string,
     *                description: string}]
     */
    JsonRoutes.add('GET', '/api/boards/:boardId/lists/:listId/cards', function(req, res) {
      const paramBoardId = req.params.boardId;
      const paramListId = req.params.listId;
      Authentication.checkBoardAccess(req.userId, paramBoardId);
      JsonRoutes.sendResult(res, {
        code: 200,
        data: Cards.find({
          boardId: paramBoardId,
          listId: paramListId,
          archived: false,
        }).map(function(doc) {
          return {
            _id: doc._id,
            title: doc.title,
            description: doc.description,
          };
        }),
      });
    });
  
    /**
     * @operation get_card
     * @summary Get a Card
     *
     * @param {string} boardId the board ID
     * @param {string} listId the list ID of the card
     * @param {string} cardId the card ID
     * @return_type Cards
     */
    JsonRoutes.add('GET', '/api/boards/:boardId/lists/:listId/cards/:cardId', function(req, res) {
      const paramBoardId = req.params.boardId;
      const paramListId = req.params.listId;
      const paramCardId = req.params.cardId;
      Authentication.checkBoardAccess(req.userId, paramBoardId);
      JsonRoutes.sendResult(res, {
        code: 200,
        data: Cards.findOne({
          _id: paramCardId,
          listId: paramListId,
          boardId: paramBoardId,
          archived: false,
        }),
      });
    });
  
    /**
     * @operation new_card
     * @summary Create a new Card
     *
     * @param {string} boardId the board ID of the new card
     * @param {string} listId the list ID of the new card
     * @param {string} authorID the user ID of the person owning the card
     * @param {string} title the title of the new card
     * @param {string} description the description of the new card
     * @param {string} swimlaneId the swimlane ID of the new card
     * @param {string} [members] the member IDs list of the new card
     * @return_type {_id: string}
     */
    JsonRoutes.add('POST', '/api/boards/:boardId/lists/:listId/cards', function(req, res) {
      Authentication.checkUserId(req.userId);
      const paramBoardId = req.params.boardId;
      const paramListId = req.params.listId;
      const currentCards = Cards.find({
        listId: paramListId,
        archived: false,
      }, { sort: ['sort'] });
      const check = Users.findOne({
        _id: req.body.authorId,
      });
      const members = req.body.members || [req.body.authorId];
      if (typeof check !== 'undefined') {
        const id = Cards.direct.insert({
          title: req.body.title,
          boardId: paramBoardId,
          listId: paramListId,
          description: req.body.description,
          userId: req.body.authorId,
          swimlaneId: req.body.swimlaneId,
          sort: currentCards.count(),
          members,
        });
        JsonRoutes.sendResult(res, {
          code: 200,
          data: {
            _id: id,
          },
        });
  
        const card = Cards.findOne({
          _id: id,
        });
        cardCreation(req.body.authorId, card);
  
      } else {
        JsonRoutes.sendResult(res, {
          code: 401,
        });
      }
    });
  
    /*
     * Note for the JSDoc:
     * 'list' will be interpreted as the path parameter
     * 'listID' will be interpreted as the body parameter
     */
    /**
     * @operation edit_card
     * @summary Edit Fields in a Card
     *
     * @description Edit a card
     *
     * The color has to be chosen between `white`, `green`, `yellow`, `orange`,
     * `red`, `purple`, `blue`, `sky`, `lime`, `pink`, `black`, `silver`,
     * `peachpuff`, `crimson`, `plum`, `darkgreen`, `slateblue`, `magenta`,
     * `gold`, `navy`, `gray`, `saddlebrown`, `paleturquoise`, `mistyrose`,
     * `indigo`:
     *
     * <img src="/card-colors.png" width="40%" alt="Wekan card colors" />
     *
     * Note: setting the color to white has the same effect than removing it.
     *
     * @param {string} boardId the board ID of the card
     * @param {string} list the list ID of the card
     * @param {string} cardId the ID of the card
     * @param {string} [title] the new title of the card
     * @param {string} [listId] the new list ID of the card (move operation)
     * @param {string} [description] the new description of the card
     * @param {string} [authorId] change the owner of the card
     * @param {string} [labelIds] the new list of label IDs attached to the card
     * @param {string} [swimlaneId] the new swimlane ID of the card
     * @param {string} [members] the new list of member IDs attached to the card
     * @param {string} [requestedBy] the new requestedBy field of the card
     * @param {string} [assignedBy] the new assignedBy field of the card
     * @param {string} [receivedAt] the new receivedAt field of the card
     * @param {string} [assignBy] the new assignBy field of the card
     * @param {string} [startAt] the new startAt field of the card
     * @param {string} [dueAt] the new dueAt field of the card
     * @param {string} [endAt] the new endAt field of the card
     * @param {string} [spentTime] the new spentTime field of the card
     * @param {boolean} [isOverTime] the new isOverTime field of the card
     * @param {string} [customFields] the new customFields value of the card
     * @param {string} [color] the new color of the card
     * @return_type {_id: string}
     */
    JsonRoutes.add('PUT', '/api/boards/:boardId/lists/:listId/cards/:cardId', function(req, res) {
      Authentication.checkUserId(req.userId);
      const paramBoardId = req.params.boardId;
      const paramCardId = req.params.cardId;
      const paramListId = req.params.listId;
  
      if (req.body.hasOwnProperty('title')) {
        const newTitle = req.body.title;
        Cards.direct.update({
          _id: paramCardId,
          listId: paramListId,
          boardId: paramBoardId,
          archived: false,
        }, {
          $set: {
            title: newTitle,
          },
        });
      }
      if (req.body.hasOwnProperty('listId')) {
        const newParamListId = req.body.listId;
        Cards.direct.update({
          _id: paramCardId,
          listId: paramListId,
          boardId: paramBoardId,
          archived: false,
        }, {
          $set: {
            listId: newParamListId,
          },
        });
  
        const card = Cards.findOne({
          _id: paramCardId,
        });
        cardMove(req.body.authorId, card, {
          fieldName: 'listId',
        }, paramListId);
  
      }
      if (req.body.hasOwnProperty('description')) {
        const newDescription = req.body.description;
        Cards.direct.update({
          _id: paramCardId,
          listId: paramListId,
          boardId: paramBoardId,
          archived: false,
        }, {
          $set: {
            description: newDescription,
          },
        });
      }
      if (req.body.hasOwnProperty('color')) {
        const newColor = req.body.color;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {color: newColor}});
      }
      if (req.body.hasOwnProperty('labelIds')) {
        let newlabelIds = req.body.labelIds;
        if (_.isString(newlabelIds)) {
          if (newlabelIds === '') {
            newlabelIds = null;
          }
          else {
            newlabelIds = [newlabelIds];
          }
        }
        Cards.direct.update({
          _id: paramCardId,
          listId: paramListId,
          boardId: paramBoardId,
          archived: false,
        }, {
          $set: {
            labelIds: newlabelIds,
          },
        });
      }
      if (req.body.hasOwnProperty('requestedBy')) {
        const newrequestedBy = req.body.requestedBy;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {requestedBy: newrequestedBy}});
      }
      if (req.body.hasOwnProperty('assignedBy')) {
        const newassignedBy = req.body.assignedBy;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {assignedBy: newassignedBy}});
      }
      if (req.body.hasOwnProperty('receivedAt')) {
        const newreceivedAt = req.body.receivedAt;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {receivedAt: newreceivedAt}});
      }
      if (req.body.hasOwnProperty('startAt')) {
        const newstartAt = req.body.startAt;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {startAt: newstartAt}});
      }
      if (req.body.hasOwnProperty('dueAt')) {
        const newdueAt = req.body.dueAt;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {dueAt: newdueAt}});
      }
      if (req.body.hasOwnProperty('endAt')) {
        const newendAt = req.body.endAt;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {endAt: newendAt}});
      }
      if (req.body.hasOwnProperty('spentTime')) {
        const newspentTime = req.body.spentTime;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {spentTime: newspentTime}});
      }
      if (req.body.hasOwnProperty('isOverTime')) {
        const newisOverTime = req.body.isOverTime;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {isOverTime: newisOverTime}});
      }
      if (req.body.hasOwnProperty('customFields')) {
        const newcustomFields = req.body.customFields;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {customFields: newcustomFields}});
      }
      if (req.body.hasOwnProperty('members')) {
        let newmembers = req.body.members;
        if (_.isString(newmembers)) {
          if (newmembers === '') {
            newmembers = null;
          }
          else {
            newmembers = [newmembers];
          }
        }
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {members: newmembers}});
      }
      if (req.body.hasOwnProperty('swimlaneId')) {
        const newParamSwimlaneId = req.body.swimlaneId;
        Cards.direct.update({_id: paramCardId, listId: paramListId, boardId: paramBoardId, archived: false},
          {$set: {swimlaneId: newParamSwimlaneId}});
      }
      JsonRoutes.sendResult(res, {
        code: 200,
        data: {
          _id: paramCardId,
        },
      });
    });
  
    /**
     * @operation delete_card
     * @summary Delete a card from a board
     *
     * @description This operation **deletes** a card, and therefore the card
     * is not put in the recycle bin.
     *
     * @param {string} boardId the board ID of the card
     * @param {string} list the list ID of the card
     * @param {string} cardId the ID of the card
     * @return_type {_id: string}
     */
    JsonRoutes.add('DELETE', '/api/boards/:boardId/lists/:listId/cards/:cardId', function(req, res) {
      Authentication.checkUserId(req.userId);
      const paramBoardId = req.params.boardId;
      const paramListId = req.params.listId;
      const paramCardId = req.params.cardId;
  
      Cards.direct.remove({
        _id: paramCardId,
        listId: paramListId,
        boardId: paramBoardId,
      });
      const card = Cards.find({
        _id: paramCardId,
      });
      cardRemover(req.body.authorId, card);
      JsonRoutes.sendResult(res, {
        code: 200,
        data: {
          _id: paramCardId,
        },
      });
  
    });
  }
  