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436 lines
13 KiB
JavaScript
436 lines
13 KiB
JavaScript
'use strict';
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var ObjectID = require('mongodb').ObjectID;
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var _ = require('underscore');
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module.exports = function (config, db, shareModel) {
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/*
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* options:
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* collection (mandatory)
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* query (mandatory)
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*/
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function getMongoContent(options, callback) {
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config.debug && config.debug('getMongoContent options', options);
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if (!options.collection) {
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return callback(new Error('Data not found / missing collection'));
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}
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return db.collection(options.collection, function collection(err, col) {
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if (err) {
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config.error && config.error('ERR2 getMongoContent', err);
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return callback && callback(err);
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}
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if (!options.query) {
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return callback && callback(new Error('Data not found ' + options.collection + '/ missing query'), null, col);
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}
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if (options.query._id && !(options.query._id instanceof Object)) {
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try {
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options.query._id = new ObjectID.createFromHexString(options.query._id);
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} catch (error) {
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config.error && config.error('ERR3 getMongoContent', error);
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return callback && callback(error);
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}
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}
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return col.findOne(options.query, function foundOne(err, result) {
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if (err) {
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config.error && config.error('ERR4 getMongoContent', err);
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return callback && callback(err);
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}
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if (!result) {
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return callback && callback(new Error('Data not found ' + options.collection + '/' + JSON.stringify(options.query)), null, col);
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}
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return callback && callback(null, result, col);
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});
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});
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}
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/*
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* options:
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* collection (mandatory)
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* query (mandatory)
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* attribute (mandatory)
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*/
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function getMongoAttribute(options, callback) {
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config.debug && config.debug('getMongoAttribute options', options);
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return getMongoContent(options, function document(err, result) {
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if (err) {
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config.error && config.error('ERR1 getMongoAttribute', err);
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return callback && callback(err);
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}
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var attribute_options = null;
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config.debug && config.debug('getMongoAttribute result', result);
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if (result &&
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result.hasOwnProperty(options.attribute) &&
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result[options.attribute].guid) {
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attribute_options = {
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collection: options.collection,
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query: {_id: result[options.attribute].guid}
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};
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config.debug && config.debug('getMongoAttribute attribute_options', attribute_options);
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getMongoContent(attribute_options, function attribute(err, attribute_result) {
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if (err) {
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config.error && config.error('ERR2 getMongoAttribute', err);
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return callback && callback(err);
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}
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config.debug && config.debug('getMongoAttribute attribute_result', attribute_result);
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return callback && callback(err, attribute_result);
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});
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} else {
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config.debug && config.debug('getMongoAttribute try direct lookup');
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attribute_options = {
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collection: options.collection,
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query: {
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parent: result._id,
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name: result.name + '.' + options.attribute
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}
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};
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config.debug && config.debug('getMongoAttribute attribute_options', attribute_options);
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return getMongoContent(attribute_options, function attribute(err, attribute_result) {
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if (err) {
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config.error && config.error('ERR getMongoAttribute', err);
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return callback && callback(err);
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}
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config.debug && config.debug('getMongoAttribute direct attribute_result', attribute_result);
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return callback && callback(err, attribute_result);
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});
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}
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});
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}
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function saveData(collection, data, callback) {
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if (data._id && !(data._id instanceof Object)) {
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data._id = new ObjectID.createFromHexString(data._id);
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}
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config.debug && config.debug('saveData saving', data._id);
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collection.save(data, {safe: true}, function (err, result2, result3) {
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if (err) {
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config.error && config.error('ERR saveData', err);
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return callback && callback(err);
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}
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config.debug && config.debug('saveData saved', data._id, result2, result3);
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return callback && callback(null, data, collection);
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});
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}
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var updating = false;
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function updateData(collection, data, callback) {
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if (updating) {
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//noinspection JSUnresolvedFunction
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setImmediate(function rescheduling() {
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config.debug && config.debug('Updating, rescheduling');
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return updateData(collection, data, callback);
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});
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} else {
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updating = true;
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var stopUpdating = function (err, result, col) {
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config.debug && config.debug('Stop updating');
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updating = false;
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if (err) {
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return callback && callback(err);
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}
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return callback && callback(null, result, col);
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};
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return collection.findOne({_id: data._id}, function foundOne(err, result) {
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if (err) {
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config.error && config.error('ERR updateData', err);
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return callback && callback(err);
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}
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_.extend(result, data);
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return saveData(collection, result, stopUpdating);
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});
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}
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}
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/*
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* options:
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* collection (mandatory)
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* query (mandatory)
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* update (optional) : extends existing content
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*/
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function setMongoContent(data, options, callback) {
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config.debug && config.debug('setMongoContent options', options);
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return db.collection(options.collection, function handleCollection(err, collection) {
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if (err) {
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config.error && config.error('ERR2 setMongoContent', err);
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return callback && callback(err);
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}
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if (options.operation) {
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data.version = options.operation.v;
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}
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var dumpData = saveData;
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if (options.update) {
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dumpData = updateData;
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}
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if (!data._id) {
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config.debug && config.debug('setMongoContent lookup by query', options.query, 'updating:', options.update);
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collection.findOne(options.query, function foundOne(err, result) {
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if (err) {
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config.error && config.error('ERR3 setMongoContent', err);
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return callback && callback(err);
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}
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if (result) {
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data._id = result._id;
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}
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return dumpData(collection, data, callback);
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});
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} else {
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return dumpData(collection, data, callback);
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}
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});
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}
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function updateShareDocumentPath(documentId, data, path, callback) {
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shareModel.getSnapshot(documentId, function (err, doc) {
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if (err) {
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config.warn && config.warn('WARN setMongoAttribute updateShareDocumentPath shareModel.getSnapshot', documentId, err);
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return callback && callback();
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}
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var sub_data = data;
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var sub_snapshot_data = doc.snapshot;
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var equal_path = [];
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var found = false;
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var x;
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for (x = 0; !found && x < path.length; x += 1) {
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var key = path[x];
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if (sub_data && sub_data.hasOwnProperty(key) &&
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sub_snapshot_data &&
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sub_snapshot_data.hasOwnProperty(key)) {
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sub_data = sub_data[key];
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sub_snapshot_data = sub_snapshot_data[key];
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equal_path.push(key);
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} else if (!sub_snapshot_data || !sub_snapshot_data.hasOwnProperty(key)) {
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found = true;
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}
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}
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if (found) {
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path = equal_path;
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}
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var op = {
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p: path
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};
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if (sub_data) {
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op.oi = sub_data;
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}
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if (sub_snapshot_data) {
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op.od = sub_snapshot_data;
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}
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return shareModel.applyOp(documentId, {
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op: [op],
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v: doc.v
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}, function (err, result) {
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if (err) {
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config.error && config.error('ERR updateShareDocumentPath shareModel.applyOp', documentId, err);
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return callback && callback();
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}
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config.debug && config.debug('updateShareDocumentPath shareModel.applyOp', documentId, op, err, result);
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return callback && callback();
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});
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});
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}
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function updateShareDocument(documentId, data, keys, callback) {
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if (!keys) {
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// no keys no update
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return callback && callback();
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}
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var ops = [];
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return shareModel.getSnapshot(documentId, function (err, doc) {
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if (err) {
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config.warn && config.warn('WARN updateShareDocument shareModel.getSnapshot', documentId, err);
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return callback && callback();
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}
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if (doc.type.name === 'text') {
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ops.push({
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d: doc.snapshot,
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p: 0
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});
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ops.push({
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i: data,
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p: 0
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});
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} else if (doc.type.name === 'json') {
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_.forEach(keys, function (key) {
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if (key !== '_id') {
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var op = {
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p: [key]
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};
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if (doc.snapshot[key]) {
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op.od = doc.snapshot[key];
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}
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if (data[key]) {
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op.oi = data[key];
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}
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ops.push(op);
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}
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});
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}
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return shareModel.applyOp(documentId, {
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op: ops,
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v: doc.v
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}, function (err, result) {
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if (err) {
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config.warn && config.warn('WARN updateShareDocument shareModel.applyOp', documentId, err);
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return callback && callback();
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}
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config.debug && config.debug('updateShareDocument shareModel.applyOp', documentId, ops, err, result);
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return callback && callback();
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});
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});
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}
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var ensuring = false;
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function ensureContent(options, callback) {
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if (ensuring) {
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//noinspection JSUnresolvedFunction
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setImmediate(function rescheduling() {
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config.debug && config.debug('Ensuring, rescheduling', options);
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return ensureContent(options, callback);
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});
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} else {
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ensuring = true;
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if (!options.query) {
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options.query = {
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name: options.name
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};
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}
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var stopEnsuring = function (err, result, col) {
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config.debug && config.debug('Stop ensuring', options);
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ensuring = false;
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if (err) {
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return callback && callback(err);
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}
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return callback && callback(null, result, col);
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};
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getMongoContent(options, function document(err, result, col) {
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if (err) {
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if (/Data not found*/.test(err.message)) {
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var documentId = 'json:' + options.collection + ':' + options.name;
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var data = {name: options.name};
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setMongoContent(data, options, function (err, content_result, col) {
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var keys = _.keys(data); // reset all attributes;
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return updateShareDocument(documentId, data, keys, function updatedShareDocument() {
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stopEnsuring(err, content_result, col);
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});
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});
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} else {
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return stopEnsuring(err);
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}
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} else {
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return stopEnsuring(null, result, col);
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}
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});
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}
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}
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/* options:
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* no_share (optional): prevent share to update itself.
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*/
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function setMongoAttribute(data, options, callback) {
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config.debug && config.debug('setMongoAttribute options', options);
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ensureContent(options, function document(err, result, col) {
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if (err) {
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config.error && config.error('ERR1 setMongoAttribute', err);
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return callback && callback(err);
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}
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var attribute_options = {
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collection: options.collection,
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name: result.name + '.' + options.attribute
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};
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if (result.hasOwnProperty(options.attribute) &&
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result[options.attribute].guid) {
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attribute_options.query = {
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_id: result[options.attribute].guid
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};
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} else {
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attribute_options.query = {
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parent: result._id,
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name: result.name + '.' + options.attribute
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};
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}
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config.debug && config.debug('getMongoAttribute parent found, get child and save', result, attribute_options);
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return ensureContent(attribute_options, function attribute(err, attribute_result) {
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if (err) {
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config.error && config.error('ERR2 setMongoAttribute ensureContent', err);
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return callback && callback(err);
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}
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var updateContent = true;
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if (result[options.attribute]) {
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if (attribute_result._id.toString() === String(result[options.attribute].guid)) {
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updateContent = false;
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} else {
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result[options.attribute].guid = attribute_result._id;
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}
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} else {
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result[options.attribute] = {guid: attribute_result._id};
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}
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attribute_result.parent = result._id;
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attribute_result.name = result.name + '.' + options.attribute;
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attribute_result[options.attribute] = data;
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if (options.operation) {
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attribute_result.version = options.operation.v;
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}
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return saveData(col, attribute_result, function saved(err) {
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if (err) {
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config.error && config.error('ERR3 setMongoAttribute', err);
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return callback && callback(err);
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}
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var documentId = 'json:' + options.collection + ':' + result.name;
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var type = options.type || 'text';
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var attributeDocumentId = type + ':' + options.collection + ':' + result.name + ':' + options.attribute;
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var keys = null;
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var share_data = null;
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if (type === 'json') {
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keys = _.keys(attribute_result); // reset all attributes;
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share_data = attribute_result;
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} else {
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keys = [attribute_result.name];
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share_data = data;
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}
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if (options.no_share) {
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keys = null;
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}
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return updateShareDocument(attributeDocumentId, share_data, keys, function updatedShareAttribute() {
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if (updateContent) {
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updateData(col, result, function saved(err) {
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if (err) {
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config.error && config.error('ERR3 setMongoAttribute', err);
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return callback && callback(err);
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}
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var path = [options.attribute, 'guid']; // reset just guid attribute;
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return updateShareDocumentPath(documentId, result, path, function updatedShareContent() {
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return callback && callback(null, attribute_result, col);
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});
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});
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} else {
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return callback && callback(null, attribute_result, col);
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}
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});
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});
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});
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});
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}
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return {
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getMongoAttribute: getMongoAttribute,
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getMongoContent: getMongoContent,
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setMongoAttribute: setMongoAttribute,
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setMongoContent: setMongoContent,
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ensureContent: ensureContent,
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updateShareDocument: updateShareDocument
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};
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};
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