pinclub/pinclub

var models = require('../models');
var config = require('../config');
var User = models.User;
var utility = require('utility');
var uuid = require('node-uuid');
var jwt = require('jsonwebtoken');

/**
 * 根据用户名列表查找用户列表
 * Callback:
 * - err, 数据库异常
 * - users, 用户列表
 * @param {Array} names 用户名列表
 * @param {Function} callback 回调函数
 */
exports.getUsersByNames = function (names, callback) {
    if (names.length === 0) {
        return callback(null, []);
    }
    User.find({loginname: {$in: names}}, callback);
};

/**
 * 根据登录名查找用户
 * Callback:
 * - err, 数据库异常
 * - user, 用户
 * @param {String} loginName 登录名
 * @param {Function} callback 回调函数
 */
exports.getUserByLoginName = function (loginName, callback) {
    User.findOne({'loginname': new RegExp('^' + loginName + '$', "i")}, callback);
};

/**
 * 根据用户ID，查找用户
 * Callback:
 * - err, 数据库异常
 * - user, 用户
 * @param {String} id 用户ID
 * @param {Function} callback 回调函数
 */
exports.getUserById = function (id, callback) {
    if (!id) {
        return callback();
    }
    User.findOne({_id: id}, callback);
};

/**
 * 根据邮箱，查找用户
 * Callback:
 * - err, 数据库异常
 * - user, 用户
 * @param {String} email 邮箱地址
 * @param {Function} callback 回调函数
 */
exports.getUserByMail = function (email, callback) {
    User.findOne({email: email}, callback);
};

/**
 * 根据用户ID列表，获取一组用户
 * Callback:
 * - err, 数据库异常
 * - users, 用户列表
 * @param {Array} ids 用户ID列表
 * @param {Function} callback 回调函数
 */
exports.getUsersByIds = function (ids, callback) {
    User.find({'_id': {'$in': ids}}, callback);
};

/**
 * 根据关键字，获取一组用户
 * Callback:
 * - err, 数据库异常
 * - users, 用户列表
 * @param {String} query 关键字
 * @param {Object} opt 选项
 * @param {Function} callback 回调函数
 */
exports.getUsersByQuery = function (query, opt, callback) {
    User.find(query, '', opt, callback);
};


exports.getCountByQuery = function (query, callback) {
    User.count(query, callback);
};

/**
 * 根据查询条件，获取一个用户
 * Callback:
 * - err, 数据库异常
 * - user, 用户
 * @param {String} name 用户名
 * @param {String} key 激活码
 * @param {Function} callback 回调函数
 */
exports.getUserByNameAndKey = function (loginname, key, callback) {
    User.findOne({loginname: loginname, retrieve_key: key}, callback);
};

exports.newAndSave = function (name, loginname, pass, email, avatar_url, active, callback) {
    var user = new User();
    user.name = loginname;
    user.loginname = loginname;
    user.pass = pass;
    user.email = email;
    user.avatar = avatar_url;
    user.active = active || false;
    let accessToken = jwt.sign({
        loginname: user.loginname,
        _id: user._id
    }, config.jwt_token, {expiresIn: 3600});
    user.accessToken = accessToken;
    user.save(function(err) {
        callback(err, user);
    });
};

var makeGravatar = function (email) {
    return 'http://www.gravatar.com/avatar/' + utility.md5(email.toLowerCase()) + '?size=48';
};
exports.makeGravatar = makeGravatar;

exports.getGravatar = function (user) {
    return user.avatar || makeGravatar(user);
};