/*引用模块*/
var express = require('express');
var session = require('express-session');
var RedisStore = require('connect-redis')(session);
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var compression = require('compression');
var routes = require('./routes/index');
var io = require('socket.io')();
//用户相关功能
var users = require('./routes/users')(io);
var admin = require('./routes/admin');
var content = require('./routes/content');

//分层路由
var adminCtrl = require('./routes/adminCtrl');


//系统功能支持
var system = require('./routes/system');
//站点配置
var settings = require("./models/db/settings");
var siteFunc = require("./models/db/siteFunc");
//文件操作对象
var fs = require('fs');
//时间格式化
var moment = require('moment');
var filter = require('./util/filter');

/*模板引擎*/
var partials = require('express-partials');

/*实例化express对象*/
var app = express();

//ueditor注册
var ueditor = require('ueditor-nodejs');
app.use('/ueditor/ue', ueditor({//这里的/ueditor/ue是因为文件件重命名为了ueditor,如果没改名，那么应该是/ueditor版本号/ue
    configFile: '/ueditor/jsp/config.json',//如果下载的是jsp的，就填写/ueditor/jsp/config.json
    mode: 'local', //本地存储填写local
    accessKey: '',//本地存储不填写，bcs填写
    secrectKey: '',//本地存储不填写，bcs填写
    staticPath: path.join(__dirname, 'public'), //一般固定的写法，静态资源的目录，如果是bcs，可以不填
    dynamicPath: '/upload/blogpicture' //动态目录，以/开头，bcs填写buckect名字，开头没有/.路径可以根据req动态变化，可以是一个函数，function(req) { return '/xx'} req.query.action是请求的行为，uploadimage表示上传图片，具体查看config.json.
}));


// view engine setup
//静态压缩
app.use(compression());
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(partials());

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json({limit: '50mb'})); // 限制上传5M
app.use(bodyParser.urlencoded({ extended: false , limit: '50mb' }));
app.use(cookieParser(settings.session_secret));
//解决异步层次混乱问题
app.use(require('express-promise')());


app.use(session({
    secret: settings.session_secret,
    store: new RedisStore({
        port: settings.redis_port,
        host: settings.redis_host,
        pass : settings.redis_psd,
        ttl: 1800 // 过期时间
    }),
    resave: true,
    saveUninitialized: true
}));

app.use(filter.authUser);

app.use(function(req, res, next){
//    针对注册会员
    res.locals.logined = req.session.logined;
    res.locals.userInfo = req.session.user;
//    针对管理员
    res.locals.adminlogined = req.session.adminlogined;
    res.locals.adminUserInfo = req.session.adminUserInfo;
    res.locals.adminNotices = req.session.adminNotices;
//    指定站点域名
    res.locals.myDomain = req.headers.host;
    next();
});


//配置站点地图和robots抓取
app.get('/sitemap.xml',function(req, res, next) {

    siteFunc.setDataForSiteMap(req, res);

});

app.get('/robots.txt',function(req, res, next) {
    var stream=fs.createReadStream('./robots.txt',{flags:'r'});
    stream.pipe(res);
});

//事件监听
app.io = io;
io.on('connection', function (socket) {
//    socket.emit('news', { hello: 'world' });
//    socket.on('my other event', function (data) {
//        console.log(data);
//    });
});

//数据格式化
app.locals.myDateFormat = function(date){
    moment.locale('zh-cn');
    return moment(date).startOf('hour').fromNow();
};

app.locals.searchKeyWord = function(content,key){
    var newContent = content;
    if(newContent && key){
        var keyword = key.replace(/(^\s*)|(\s*$)/g, "");
        if(keyword != ''){
            var reg = new RegExp(keyword,'gi');
            newContent = content.replace(reg, '<span style="color:red">'+key+'</span>');
        }
    }
    return newContent;
};

app.use(express.static(path.join(__dirname, 'public')));

/*指定路由控制*/
app.use('/', routes);
app.use('/content', content);
app.use('/users', users);
//app.use('/admin', validat);
app.use('/admin', adminCtrl);
app.use('/admin', admin);
app.use('/system',system);


// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
    console.log(err);
    siteFunc.renderToTargetPageByType(req,res,'error',{info : '找不到页面',message : settings.system_illegal_param, page : 'do404'});
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    siteFunc.renderToTargetPageByType(req,res,'error',{info : '出错啦！',message : err.message, page : 'do500'});
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  siteFunc.renderToTargetPageByType(req,res,'error',{info : '出错啦！',message : err.message, page : 'do500'});
});


module.exports = app;