HackMD/lib/workers/noteUpdater.js

101 lines
No EOL
3.2 KiB
JavaScript

// external modules
var async = require('async');
var moment = require('moment');
var LZString = require('lz-string');
// core
var config = require("../config.js");
var logger = require("../logger.js");
var models = require("../models");
process.on('message', function (data) {
if (!data || !data.msg || data.msg !== 'update note' || !data.notes) return process.exit();
var notes = data.notes;
async.each(Object.keys(notes), function (key, callback) {
var note = notes[key];
if (config.debug) logger.info("note updater found dirty note: " + key);
updateNote(note, function(err, _note) {
if (!_note) {
process.send({
msg: 'note not found',
note: note
});
logger.error('note not found: ', note.id);
}
if (err || !_note) {
process.send({
msg: 'error',
note: note
});
return callback(err, null);
}
note.updatetime = moment(_note.lastchangeAt).valueOf();
process.send({
msg: 'check',
note: note
});
return callback(null, null);
});
}, function (err) {
if (err) logger.error('note updater error', err);
process.exit();
});
});
function updateNote(note, callback) {
models.Note.findOne({
where: {
id: note.id
}
}).then(function (_note) {
if (!_note) return callback(null, null);
if (note.lastchangeuser) {
if (_note.lastchangeuserId != note.lastchangeuser) {
models.User.findOne({
where: {
id: note.lastchangeuser
}
}).then(function (user) {
if (!user) return callback(null, null);
note.lastchangeuserprofile = models.User.parseProfile(user.profile);
return finishUpdateNote(note, _note, callback);
}).catch(function (err) {
logger.error(err);
return callback(err, null);
});
} else {
return finishUpdateNote(note, _note, callback);
}
} else {
note.lastchangeuserprofile = null;
return finishUpdateNote(note, _note, callback);
}
}).catch(function (err) {
logger.error(err);
return callback(err, null);
});
}
function finishUpdateNote(note, _note, callback) {
var body = note.document;
var title = note.title = models.Note.parseNoteTitle(body);
title = LZString.compressToBase64(title);
body = LZString.compressToBase64(body);
var values = {
title: title,
content: body,
authorship: LZString.compressToBase64(JSON.stringify(note.authorship)),
lastchangeuserId: note.lastchangeuser,
lastchangeAt: Date.now()
};
_note.update(values).then(function (_note) {
return callback(null, _note);
}).catch(function (err) {
logger.error(err);
return callback(err, null);
});
}
module.exports = {
updateNote: updateNote
};