desktop-app/node_modules/user.js

var Evt = require('evt');
var db = require('db');

function log(o) {
	console.log(o);
}

/**
UserId (主键)
Email
Username
Token
LastLoginTime
IsActive // 是否是活跃用户
*/
// var User = {}

var Api = null; // require('api');
// 用户基本信息
User = {
	token: '',
	userId: '',
	email: '',
	username: '',
	LastSyncUsn: -1,
	LastSyncTime: null,
	// 登录后保存当前
	setCurUser: function(user) {
		if(user) {
			this.token = user.Token;
			this.userId = user.UserId;
			this.email = user.Email;
			this.username = user.Username;
			// 保存到数据库中
			this.saveCurUser(user);
		}
	},
	saveCurUser: function(user, callback) {
		// 当前用户是否在数据库中
		db.users.count({_id: user.UserId}, function(err, count) {
			if(err || count == 0) {
				// 添加一个
				user['_id'] = user.UserId;
				user['IsActive'] = true;
				db.users.insert(user, function(err, doc) {
					log(err);
				});
			} else {
				user.IsActive = true;
				delete user['Ok'];
				db.users.update({_id: user.UserId}, {$set: user}, function(err, cnt) {
					if(err || cnt == 0) {
						log(err);
						callback && callback(false);
					} else {
						callback && callback(true);
					}
				});
			}
		});
		// 设值其它用户为非active
		db.users.update({_id: {$ne: user.UserId}}, {$set: {IsActive: false}}, {multiple: true})
	},
	// 打开软件时, 从db中获取当前用户
	init: function(callback) {
		console.log("......user init.......")
		var me = this;
		db.users.findOne({IsActive: true}, function(err, user) {
			if(err || !user || !user.UserId) {
				log('不存在');
				callback && callback(false);
			} else {
				// me.setCurUser(doc);
				me.token = user.Token;
				me.userId = user.UserId;
				me.email = user.Email;
				me.username = user.Username;
				me.LastSyncUsn = user.LastSyncUsn;
				me.LastSyncTime = user.LastSyncTime;

				callback && callback(user);
			}
		});
	},
	// 得到当前活跃用户Id
	getCurActiveUserId: function() {
		return this.userId || "user1";
	},
	getToken: function() {
		return this.token || "user1";
	},
	getCurUserImagesPath: function() {
		return Evt.getBasePath() + '/' + this.getCurUserImagesAppPath();
	},
	getCurUserAttachsPath: function() {
		return Evt.getBasePath() + '/' + this.getCurUserAttachsAppPath();
	},
	getCurUserImagesAppPath: function() {
		return 'data/' + this.getCurActiveUserId() + '/images';
	},
	getCurUserAttachsAppPath: function() {
		return 'data/' + this.getCurActiveUserId() + '/attachs';
	},

	getCurUser: function(callback) {
		var me = this;
		db.users.findOne({_id: me.getCurActiveUserId()}, function(err, doc) {
			if(err) {
				callback(false);
			} else {
				callback(doc);
			}
		});
	},

	getLastSyncState: function(callback) {
		var me = this;
		me.getCurUser(function(user) {
			if(user) {
				callback(user.LastSyncUsn, user.LastSyncTime);
			} else {
				callback(false, false);
			}
		})
	},

	// 同步后更新同步状态
	updateLastSyncState: function(callback) {
		var me = this;
		if(!Api) {
			Api = require('api');
		}
		log('--updateLastSyncState---')
		Api.getLastSyncState(function(state) {
			if(state) {
				me.LastSyncUsn = state.LastSyncUsn;
				me.LastSyncTime = state.LastSyncTime;
				db.users.update({UserId: me.getCurActiveUserId()}, {$set: state});
			}
			callback();
		});
	},

	// send changes要用
	getLastSyncUsn: function() {
		var me = this;
		return me.LastSyncUsn;
	},
	// 更新 send changes要用
	updateLastSyncUsn: function(usn) {
		var me = this;
		me.LastSyncUsn = usn;
		db.users.update({UserId: me.getCurActiveUserId()}, {$set: {LastSyncUsn: usn}});
	}
};

module.exports = User;