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// buffer each user's email text in a queue, then flush them in single email
Meteor.startup(() => {
Notifications.subscribe('email', (user, title, description, params) => {
// add quote to make titles easier to read in email text
const quoteParams = _.clone(params);
['card', 'list', 'oldList', 'board', 'comment'].forEach((key) => {
if (quoteParams[key]) quoteParams[key] = `"${params[key]}"`;
});
const text = `${params.user} ${TAPi18n.__(description, quoteParams, user.getLanguage())}\n${params.url}`;
user.addEmailBuffer(text);
// unlike setTimeout(func, delay, args),
// Meteor.setTimeout(func, delay) does not accept args :-(
// so we pass userId with closure
const userId = user._id;
Meteor.setTimeout(() => {
const user = Users.findOne(userId);
// for each user, in the timed period, only the first call will get the cached content,
// other calls will get nothing
const texts = user.getEmailBuffer();
if (texts.length === 0) return;
// merge the cached content into single email and flush
const text = texts.join('\n\n');
user.clearEmailBuffer();
try {
Email.send({
to: user.emails[0].address.toLowerCase(),
from: Accounts.emailTemplates.from,
subject: TAPi18n.__('act-activity-notify', {}, user.getLanguage()),
text,
});
} catch (e) {
return;
}
}, 30000);
});
});
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