mission planning: notify volunteers per mail #33

Author: maxbeier

routes/api/missions.js

@@ -1,9 +1,8 @@
 const keystone = require('keystone');
-// const utils = require('keystone-utils');
-// const Email = require('keystone-email');
-// const mailConfig = require('../../config').mail;
+const Email = require('keystone-email');
+const mailConfig = require('../../config').mail;
 
-// const Mission = keystone.list('Mission');
+const Volunteer = keystone.list('Volunteer');
 const Mission = keystone.list('Mission');
 
 /**
@@ -49,14 +48,85 @@ exports.create = (req, res) => {
  * Update a Missions Data
  */
 exports.update = (req, res) => {
+   const newData = req.body;
+
    Mission.model
       .findById(req.params.id, (err, mission) => {
          if (err) return res.apiError(err.detail.errmsg);
          if (!mission) return res.apiError('not found');
 
-         mission.getUpdateHandler(req).process(req.body, (err2) => {
+         const data = {};
+
+         if (newData.crew) {
+            const oldCrewIDs = mission.crew.map(a => a.volunteer.toString());
+            const newCrewIDs = newData.crew.map(a => a.volunteer);
+
+            data.removed = oldCrewIDs.filter(id => !newCrewIDs.includes(id));
+            data.added = newCrewIDs.filter(id => !oldCrewIDs.includes(id));
+
+            if (newData.start || newData.end) {
+               data.unchanged = oldCrewIDs.filter(id => newCrewIDs.includes(id));
+               newData.crew
+                  .filter(assignment => assignment.status === 'yes')
+                  .forEach(assignment => assignment.status = 'pending');
+            }
+         }
+
+         mission.getUpdateHandler(req).process(newData, (err2) => {
             if (err2) return res.apiError(err2.detail.errmsg);
-            res.apiResponse({ mission });
+
+            if (data.removed || data.added || data.unchanged) {
+               Volunteer.model
+                  .find({})
+                  .where('_id')
+                  .in([].concat(data.added, data.removed, data.unchanged))
+                  .exec((err3, volunteers) => {
+                     const promises = volunteers.map((volunteer) => {
+                        const values = {
+                           volunteer: volunteer.name.first,
+                           mission: mission.name,
+                           start: new Date(mission.start).toDateString(),
+                           end: new Date(mission.end).toDateString(),
+                           host: `${req.protocol}://${req.get('host')}`,
+                           link: '/volunteer/',
+                        };
+
+                        if (data.added.includes(volunteer.id)) {
+                           values.reason = 'You\'ve been added to a mission';
+                        }
+                        else if (data.removed.includes(volunteer.id)) {
+                           values.reason = 'You\'ve been removed from a mission';
+                        }
+                        else { // unchanged
+                           values.reason = 'The date of a mission changed';
+                        }
+
+                        const subject = `cadus crewing | ${values.reason}`;
+
+                        return sendEmail(volunteer.email, subject, values);
+                     });
+
+                     Promise.all(promises)
+                        .then(() => res.apiResponse({ mission }))
+                        .catch(() => res.apiError('saved data but couldn\'t send all emails'));
+                  });
+            }
+            else {
+               res.apiResponse({ mission });
+            }
          });
       });
 };
+
+function sendEmail(to, subject, data) {
+   const options = {
+      to,
+      subject,
+      from: mailConfig.sender,
+      nodemailerConfig: mailConfig.nodemailerConfig,
+   };
+   const template = 'templates/emails/volunteer-mission-changed.jade';
+
+   return new Promise(resolve => new Email(template, { transport: 'nodemailer' })
+      .send(data, options, resolve));
+}

templates/emails/volunteer-mission-changed.jade

@@ -0,0 +1,9 @@
+extends layouts/base
+
+block content
+   p Hi #{volunteer},
+   p= reason
+   h2= mission
+   p It starts on #{start} and ends on #{end}.
+   p You can view the mission on your dashboard:
+   a(href=host + link)= host + link