Fix start date in Gantt chart

fix-start-date-in-gantt-chart.js

/*jshint esversion: 6 */
const entities = require('@jetbrains/youtrack-scripting-api/entities');
const http = require('@jetbrains/youtrack-scripting-api/http');

const knownGanttIssues = {};

const connection = new http.Connection('https://<URL_TO_API>');
connection.addHeader('Content-Type', 'application/json;charset=UTF-8');
connection.addHeader('Authorization', 'Bearer <aUTH_TOKEN>');

const updateGanttIssuesStore = (ganttId) => {
  if (knownGanttIssues.hasOwnProperty(ganttId) && !!knownGanttIssues[ganttId]) {
    return;
  }
  if (knownGanttIssues.hasOwnProperty(ganttId) && knownGanttIssues[ganttId] === undefined) {
    delete knownGanttIssues[ganttId]
  };

  const response = connection.getSync(`/api/gantts/${ganttId}`, [{
    name: 'fields',
    value: 'members(id,idReadable,startDate)'
  }]);

  if (response && response.code === 200) {
    const data = JSON.parse(response.response);
    knownGanttIssues[ganttId] = data.members;
  } else if(response) {
    console.error(response);
  }
}

const updateStartDate = (ganttId, memberId, startDate) => {
  const payLoad = {
    "id": memberId,
    "startDate": startDate,
  };
  const response = connection.postSync(`/api/gantts/${ganttId}/members/${memberId}`, [], payLoad);
  if (response && response.code === 200) {
    if (knownGanttIssues.hasOwnProperty(ganttId)) {
      delete knownGanttIssues[ganttId];
    }
  } else if(response) {
    console.error(response);
  }
}

exports.rule = entities.Issue.onSchedule({
  title: 'Fix start date in Gantt chart',
  search: 'project: <SOME_PROJECT> Start Date: -Undefined #Unresolved Gantt: <SOME_GANTT_CHART>',
  cron: '0 0 * ? * * *',
  muteUpdateNotifications: true,
  guard: function() {
    return true;
  },
  action: function(ctx) {
    const issue = ctx.issue;

    const ganttIds = ['280-11', '280-26', '280-21']; // <<< I want to get all the Gantt charts belonging to the issue
    
    for (const ganttId of ganttIds) {
      updateGanttIssuesStore(ganttId);

      if (knownGanttIssues.hasOwnProperty(ganttId) && knownGanttIssues[ganttId]) {
        const member = knownGanttIssues[ganttId].find((item) => item.idReadable === issue.id);
        if(!!member && member.startDate !== issue.fields.StartDate) {
          updateStartDate(ganttId, member.id, issue.fields.StartDate);
        }
      }      
    }
  },
  requirements: {
    StartDate: {
      type: entities.Field.dateType,
      name: 'Start Date',
    },
  },
});