var express = require('express');
var flash = require('express-flash');
var path = require('path');
var passport = require('passport');
var Strategy = require('passport-local').Strategy;
var async = require('async');
var fs = require('fs');
var moment = require("moment");

// Make ourselves a nice little express app.
var app = express();

// Get connected to our database
var MongoClient = require('mongodb').MongoClient;

// Include some other JS
Post = require('./post.js');
Photo = require('./photo.js');
User = require('./user.js');
Category = require('./category.js');
Static = require('./static.js');

// Get config variables
var config = require('./config.js').config;

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(require('serve-favicon')(path.join(__dirname, 'public',
//    'favicon.ico')));
app.use(flash());
app.use(require('morgan')('dev'));
app.use(require('body-parser').urlencoded({ extended: true }));
app.use(require('cookie-parser')());
var session = require('express-session');
var RedisStore = require('connect-redis')(session);
app.use(session({
    store: new RedisStore({
        host: 'localhost',
        port: 6379,
    }),
    secret: 'amdasdfasdf',
    resave: true,
    saveUninitialized: true
}));


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

// Setup authentication via twitter.
passport.use(new Strategy(
    function(username, password, done) {
        User.verify(username, password, function(err, user) {
            console.log("Verifying user: " + username);
            if (!user) { return done(null, false); }
            return done(null, user);
        });
    }
));

passport.serializeUser(function(user, done) {
//      console.log("Serializing user: "+user.username);
    done(null, user.username);
});

passport.deserializeUser(function(username, done) {
//     console.log("Deserializing user: "+username);
    User.getByUsername(username, function (err, user) {
        if (!user) { return done(false); }
        done(null, user);
    });
});

app.use(passport.initialize());
app.use(passport.session());

// Require logins for all admin pages other pages have to be handled separately.
app.all('/admin*', require('connect-ensure-login').ensureLoggedIn());

// Pull in all our external routes.
require('./routes-post.js')(app);
require('./routes-photo.js')(app);
require('./routes-preview.js')(app);

// User management routing
app.get('/login', function(req, res) {
    res.render('admin-login', {user: req.user});
});

app.post('/login',
    passport.authenticate('local', { successReturnToOrRedirect: '/admin', failureRedirect: '/login' })
);

app.get('/logout', function(req, res) {
    req.logout();
    res.redirect('/');
}
);

// Admin page to view all the items that need to be uploaded.
app.get('/admin/view/uploads',
    function(req, res, next) {
        Post.getNeedsUpload(function (err, posts) {
            if (err) console.log(err);
            Photo.getNeedsUpload(function (err, photos) {
                res.render('admin-view-uploads', {
                    successNotice: req.flash('successNotice'),
                    failureNotice: req.flash('failureNotice'),
                    user: req.user
                });
            });
        });
    }
);

// Admin page to view all the items that need to be built.
app.get('/admin/view/builds',
    function(req, res, next) {
        Post.getNeedsBuild(function (err, posts) {
            if (err) console.log(err);
            Photo.getNeedsBuild(function (err, photos) {
                res.render('admin-view-builds', {
                    successNotice: req.flash('successNotice'),
                    failureNotice: req.flash('failureNotice'),
                    user: req.user
                });
            });
        });
    }
);

// Admin page to build all unbuilt items
app.get('/admin/build',
    function(req, res, next) {
        Post.getNeedsBuild(function (err, posts) {
            if (!err) {
                for (i=0; i<posts.length; i++) {
                    posts[i].build(function (err) {
                        if (err) console.log(err);
                    });
                }
            } else {
                console.log(err);
            }
        });
        Photo.getNeedsBuild(function(err, photos) {
            if (!err) {
                for (i=0; i<photos.length; i++) {
                    photos[i].build(function (err) {
                        if (err) console.log(err);
                    });
                }
            } else {
                console.log(err);
            }
        });
        req.flash('successNotice', 'All items built.');
        res.redirect(req.header('Referer') || '/admin');
    }
);


// Admin dashboard page.
app.get('/admin',
    function(req, res, next) {
        Post.countPosts(function (err, postCount) {
            Category.countCategories(function (err, categoryCount) {
                Photo.countPhotos(function (err, photoCount) {
                    Post.getNeedsBuild(function (err, buildPosts) {
                        Photo.getNeedsBuild(function (err, buildPhotos) {
                            Post.getNeedsUpload(function (err, uploadPosts) {
                                Photo.getNeedsUpload(function (err, uploadPhotos) {
                                    res.render('admin-dashboard', {
                                        successNotice: req.flash('successNotice'),
                                        failureNotice: req.flash('failureNotice'),
                                        categories: categoryCount,
                                        posts: postCount,
                                        galleries: "###",
                                        photos: photoCount,
                                        tags: "TBD",
                                        buildCount: buildPosts.length + buildPhotos.length,
                                        uploadCount: uploadPosts.length + uploadPhotos.length,
                                        user: req.user
                                    });
                                });
                            });
                        });
                    });
                });
            });
        });
    }
);


// Have to have some sort of home page.
app.get('/', function(req, res, next) {
  res.render('admin-index', { title: 'AMDavidson.com', user: req.user });
}
);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.locals.pretty = true;
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('admin-error', {
      message: err.message,
      error: err,
      user: req.user
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    user: req.user,
    error: {}
  });
});


app.set('port', process.env.PORT || 3000)
var server = require('http').createServer(app)

process.on('uncaughtException', function (exception) {
  console.log(exception);
});


MongoClient.connect('mongodb://localhost/crunch', function(err, database) {
    if (!err) {
        global.db = database;
        server.listen(app.get('port'), function() {
            console.log("Server listening on port " + app.get('port'));
        });
    }
});