var pages = function(dbot) {
    var _ = require('underscore')._;
    var connections = dbot.instance.connections;

    return {
        '/users': function(req, res) {
            var connections = Object.keys(dbot.instance.connections);
            res.render('connections', { 'name': dbot.config.name, 'connections': connections });
        },

        '/channels/:connection': function(req, res) {
            var connection = req.params.connection;
            if(dbot.instance.connections.hasOwnProperty(connection)) {
                var channels = Object.keys(dbot.instance.connections[connection].channels);
                res.render('channels', { 'name': dbot.config.name, 'connection': connection, 'channels': channels});
            } else {
                res.render_core('error', { 'name': dbot.config.name, 'message': 'No such connection.' });
            }
        },

        '/users/:connection/:channel': function(req, res) {
            var connection = req.params.connection;
            var channel = _.unescape(req.params.channel);
            var connections = dbot.instance.connections;

            if(connections.hasOwnProperty(connection) && 
                connections[connection].channels.hasOwnProperty(channel)) {

                //TODO(samstudio8): Stats API Functionality
                var chanData = dbot.api.stats.getChanStats(connection, channel, ["week"]);
                var chanFreq = [];
                var chanFreqLabel = [];

                if(chanData){
                    var cur_ptr;
                    for(var i=0; i <= 6; i++){
                        cur_ptr = ((i+1)+chanData.fields.week.raw.ptr) % 7;
                        for(var j=0; j <= 23; j++){
                            chanFreq.push(chanData.fields.week.raw[cur_ptr][j]);
                        }
                        chanFreqLabel.push("'"+chanData.fields.week.raw[cur_ptr].name+"'");
                    }
                }
                else{
                    for (var i = 0; i < 168; i++) chanFreq[i] = 0;
                    chanFreqLabel = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];
                }

                var userData = { "active": [], "inactive": [], "offline": []};
                var reply = dbot.api.stats.getChanUsersStats(connection, channel, [
                        "lines", "words", "lincent", "wpl", "in_mentions"
                ]);
                _.each(reply.users, function(user, userName){
                    if(userName != dbot.config.name){
                        if(user.online){
                            if(user.active){
                                userData.active.push(user);
                            }
                            else{
                                userData.inactive.push(user);
                            }
                        }
                        else{
                            userData.offline.push(user);
                        }
                    }
                });

                var userSort = function(a, b){
                    var x = a.display.toLowerCase();
                    var y = b.display.toLowerCase();
                    if(x > y) return 1;
                    if(x < y) return -1;
                    return 0;
                }
                userData.active.sort(userSort);
                userData.inactive.sort(userSort);
                userData.offline.sort(userSort);

                var userDataSorted = (userData.active.concat(userData.inactive)).concat(userData.offline);

                res.render('users', { 
                    'name': dbot.config.name,
                    'connection': connection,
                    'channel': channel,
                    'userStats': userDataSorted,
                    'chanFreq': chanFreq,
                    'chanFreqLen': chanFreq.length,
                    "locals": {
                      'chanFreqLabel': chanFreqLabel,  
                    }});

            } else {
                res.render_core('error', { 'name': dbot.config.name, 'message': 'No such connection or channel.' });
            }
        },
    };
};

exports.fetch = function(dbot) {
    return pages(dbot);
};