mirror of
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112 lines
2.9 KiB
JavaScript
112 lines
2.9 KiB
JavaScript
/*!
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* nodeclub - topic mention user controller.
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* Copyright(c) 2012 fengmk2 <fengmk2@gmail.com>
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* Copyright(c) 2012 muyuan
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* MIT Licensed
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*/
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/**
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* Module dependencies.
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*/
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var User = require('../proxy').User;
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var Message = require('./message');
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var EventProxy = require('eventproxy');
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var _ = require('lodash');
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/**
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* 从文本中提取出@username 标记的用户名数组
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* @param {String} text 文本内容
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* @return {Array} 用户名数组
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*/
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var fetchUsers = function (text) {
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if (!text) {
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return [];
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}
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var ignoreRegexs = [
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/```.+?```/g, // 去除单行的 ```
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/^```[\s\S]+?^```/gm, // ``` 里面的是 pre 标签内容
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/`[\s\S]+?`/g, // 同一行中，`some code` 中内容也不该被解析
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/^ .*/gm, // 4个空格也是 pre 标签，在这里 . 不会匹配换行
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/\b\S*?@[^\s]*?\..+?\b/g, // somebody@gmail.com 会被去除
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/\[@.+?\]\(\/.+?\)/g, // 已经被 link 的 username
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];
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ignoreRegexs.forEach(function (ignore_regex) {
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text = text.replace(ignore_regex, '');
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});
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var results = text.match(/@[a-z0-9\-_]+\b/igm);
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var names = [];
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if (results) {
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for (var i = 0, l = results.length; i < l; i++) {
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var s = results[i];
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//remove leading char @
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s = s.slice(1);
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names.push(s);
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}
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}
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names = _.uniq(names);
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return names;
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};
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exports.fetchUsers = fetchUsers;
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/**
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* 根据文本内容中读取用户，并发送消息给提到的用户
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* Callback:
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* - err, 数据库异常
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* @param {String} text 文本内容
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* @param {String} topicId 主题ID
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* @param {String} authorId 作者ID
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* @param {String} reply_id 回复ID
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* @param {Function} callback 回调函数
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*/
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exports.sendMessageToMentionUsers = function (text, topicId, authorId, reply_id, callback) {
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if (typeof reply_id === 'function') {
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callback = reply_id;
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reply_id = null;
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}
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callback = callback || _.noop;
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User.getUsersByNames(fetchUsers(text), function (err, users) {
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if (err || !users) {
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return callback(err);
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}
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var ep = new EventProxy();
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ep.fail(callback);
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users = users.filter(function (user) {
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return !user._id.equals(authorId);
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});
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ep.after('sent', users.length, function () {
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callback();
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});
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users.forEach(function (user) {
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Message.sendAtMessage(user._id, authorId, topicId, reply_id, ep.done('sent'));
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});
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});
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};
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/**
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* 根据文本内容，替换为数据库中的数据
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* Callback:
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* - err, 数据库异常
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* - text, 替换后的文本内容
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* @param {String} text 文本内容
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* @param {Function} callback 回调函数
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*/
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exports.linkUsers = function (text, callback) {
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var users = fetchUsers(text);
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for (var i = 0, l = users.length; i < l; i++) {
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var name = users[i];
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text = text.replace(new RegExp('@' + name + '\\b(?!\\])', 'g'), '[@' + name + '](/user/' + name + ')');
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}
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if (!callback) {
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return text;
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}
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return callback(null, text);
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};
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