/**
 * Created by Owen Gannon (https://github.com/gannono2) for The Irish Times on 08/02/2016.
 *
 * This plugin is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
 * http://creativecommons.org/licenses/by-sa/4.0/
 */

(function($){

    var apiEndpoint = "/cstatic/election-api/api/public/v1/elections/";
    var templateRoot = "/cstatic/static/general-election/templates/";
    var electionCode = "gen2007";

    google.load('visualization', '1.0', {'packages':['corechart']});
    google.setOnLoadCallback();

    $.fn.extend({

        getNational: function(options, callback) {

            // Error handling for options
            if(options.electionCode == 'undefined' || options.electionCode == null) {
                return callback({err: true});
            }
            if (options.ceannComhairle == 'undefined' || options.ceannComhairle == null) {
                return callback({err: true});
            }

            electionCode = options.electionCode;

            // See if the election is currently saved in localStorage
            if( localStorage && localStorage.getItem(options.electionCode) ) {

                // Retrieve the election data from localStorage
                return callback({
                    results: JSON.parse(localStorage.getItem(options.electionCode))
                });
            }

            // If it's not, make an AJAX request and store the result
            else {
                var ts = new Date().getTime();
                $.getJSON(apiEndpoint + options.electionCode + "/nationalpage.js" + "?ts=" + ts, function(json){

                    // Assign the response properties to variables
                    var results = [];
                    var ioFirstPref = 0;
                    var ioSeats = 0;
                    var keys = Object.keys(json["parties"]);
                    for(var i = 0; i < keys.length; i++){

                        var party = keys[i];
                        var colourClass = keys[i].toLowerCase();

                        if(party.toLowerCase() === "ind" || party.toLowerCase() === "oth") {
                            ioFirstPref += json["parties"][keys[i]]["firstpreference"];
                            ioSeats += json["parties"][keys[i]]["seats"];
                        } else {
                            results.push({
                                party: party,
                                firstpreference: json["parties"][keys[i]]["firstpreference"],
                                seats: json["parties"][keys[i]]["seats"],
                                colourClass: colourClass
                            });
                        }
                    }

                    // Push the independents and others into the results list
                    results.push({
                        party: "IO",
                        firstpreference: ioFirstPref,
                        seats: ioSeats,
                        colourClass: "io"
                    });

                    results.sort(function(a, b){
                        return b.firstpreference - a.firstpreference;
                    });

                    // Add Ceann Comhairle's seat (doesn't effect the % of 1st pref)
                    for(var j = 0; j < results.length; j++){
                        if(options.ceannComhairle === results[j].party){
                            results[j].seats++;
                        }
                    }

                    try{
                        localStorage.setItem(options.electionCode, JSON.stringify(results));
                    } catch(err){
                        return callback({results: results});
                    }

                    return callback({results: results});

                }).fail(function(){ return {err: true}; });
            }
        },

        getConstituency: function(options, callback) {

            // Error handling for options
            if(options.electionCode == 'undefined' || options.electionCode == null) {
                return callback({err: true});
            }
            if(options.constituencyCode == 'undefined' || options.constituencyCode == null) {
                return callback({err: true});
            }

            // See if the chosen constituency is saved in localStorage
            if( localStorage && localStorage.getItem(options.electionCode + "-" + options.constituencyCode) ){

                // Retrieve the constituency results from localStorage
                return callback({
                    constituency: JSON.parse(localStorage.getItem(options.electionCode + "-" + options.constituencyCode))
                });
            }

            // If it's not, make an AJAX request
            else {
                var ts = new Date().getTime();
                $.getJSON(apiEndpoint + options.electionCode + "/constituencies/" + options.constituencyCode + "/fulldata.js" + "?ts=" + ts, function(json){

                    var voteShare = json['voteShare'];
                    var totalValidPoll = json['meta']['totalvalidpoll'];
                    var data = {};
                    data.results = [];

                    for(var i = 0; i < voteShare.length; i++){

                        // IO is grouped on the API side, no need to group again
                        if(voteShare[i].party.toLowerCase() === "ind" || voteShare[i].party.toLowerCase() === "oth"){
                            continue;
                        }

                        var obj = {
                            party: voteShare[i].party,
                            votes: voteShare[i].votes,
                            percentage: ((voteShare[i].votes / totalValidPoll) * 100),
                            colourClass: voteShare[i].party.toLowerCase()
                        };

                        data.results.push(obj);

                    }

                    data.results.sort(function(a, b){
                        return b.votes - a.votes;
                    });
                    data.meta = json["meta"];
                    data.firstPreferenceCompleted = (json["countresults"].length > 0);
                    data.seatsFilled = json["filled"];

                    data.counts = [];
                    for(var x = 0; x < json["countresults"].length; x++){
                        data.counts.push([]);
                        var keys = Object.keys(json["countresults"][x]);
                        for(var y = 0; y < keys.length; y++){
                            if(keys[y] === y.toString()){
                                data.counts[x].push(json["countresults"][x][y]);
                            }
                        }
                    }

                    data.eliminated = [];
                    data.notElected = [];
                    var candidate = null;
                    for(var a = 0; a < data.counts.length; a++){
                        for(var b = 0; b < data.counts[a].length; b++){
                            if(data.counts[a][b].elected === 1){
                                for(var l = 0; l < data.counts[0].length; l++ ){
                                    candidate = data.counts[a][b];
                                    if(data.counts[0][l].name === candidate.name){
                                        data.counts[0][l].status = "elected";
                                    }
                                }
                            } else if(data.counts[a][b].eliminated === 1){
                                candidate = data.counts[a][b];
                                candidate.count = a+1;
                                data.eliminated.push(candidate);

                                for(var m = 0; m < data.counts[0].length; m++ ){
                                    if(data.counts[0][m].name === candidate.name){
                                        data.counts[0][m].status = "eliminated";
                                    }
                                }

                            } else if(a === data.counts.length - 1){
                                if(data.counts[a][b].elected === 0 && data.counts[a][b].eliminated === 0){
                                    candidate = data.counts[a][b];
                                    candidate.count = a+1;
                                    data.notElected.push(candidate);

                                    for(var n = 0; n < data.counts[0].length; n++ ){
                                        if(data.counts[0][n].name === candidate.name){
                                            data.counts[0][n].status = "notElected";
                                        }
                                    }
                                }
                            }
                        }
                    }

                    localStorage.setItem((options.electionCode + "-" + options.constituencyCode), JSON.stringify(data));

                    return callback({constituency: data});

                }).fail(function(){ return { err: true }; });
            }
        },

        drawNationalResults: function(data){
            var $this = $(this);

            var electionYear = 2007;

            if(electionCode === "gen2011"){
                electionYear = 2011;
            }

            var html = new EJS({url: templateRoot + 'archive-national.ejs'}).render({data: data, electionYear: electionYear});
            $this.empty().append(html);
        },

        drawConstituencyDropdown: function(electionCode){

            var constituencies = [
                { name: "Cavan-Monaghan", code: "CMN" },
                { name: "Carlow-Kilkenny", code: "CKY" },
                { name: "Clare", code: "CLR" },
                { name: "Cork East", code: "CET" },
                { name: "Cork North Central", code: "CNC" },
                { name: "Cork North West", code: "CNW" },
                { name: "Cork South Central", code: "CSC" },
                { name: "Cork South West", code: "CSW" },
                { name: "Donegal North East", code: "DNE" },
                { name: "Donegal South West", code: "DSW" },
                { name: "Dublin Central", code: "DCL" },
                { name: "Dublin Mid West", code: "DMW" },
                { name: "Dublin North", code: "DNO" },
                { name: "Dublin North Central", code: "DNC" },
                { name: "Dublin North East", code: "DNT" },
                { name: "Dublin North West", code: "DNW" },
                { name: "Dublin South", code: "DSO" },
                { name: "Dublin South Central", code: "DSC" },
                { name: "Dublin South East", code: "DSE" },
                { name: "Dublin South West", code: "DST" },
                { name: "Dublin West", code: "DWT" },
                { name: "Dún Laoghaire", code: "DLR"},
                { name: "Galway East", code: "GET" },
                { name: "Galway West", code: "GWT" },
                { name: "Kerry South", code: "KYS" },
                { name: "Kildare North", code: "KNO" },
                { name: "Kildare South", code: "KSO" },
                { name: "Laois-Offaly", code: "LOY" },
                { name: "Longford-Westmeath", code: "LRW" },
                { name: "Louth", code: "LTH" },
                { name: "Mayo", code: "MYO" },
                { name: "Meath East", code: "MTE" },
                { name: "Meath West", code: "MTW" },
                { name: "Roscommon-South Leitrim", code: "RLS" },
                { name: "Sligo-North Leitrim", code: "SLN" },
                { name: "Tipperary North", code: "TNO" },
                { name: "Tipperary South", code: "TSO" },
                { name: "Waterford", code: "WRD" },
                { name: "Wexford", code: "WXD" },
                { name: "Wicklow", code: "WLW" }
            ];

            var eleven = [
                { name: "Limerick City", code: "LMC" },
                { name: "Limerick", code: "LIM" },
                { name: "Kerry North-Limerick West", code: "KNL" }
            ];

            var zeroSeven = [
                { name: "Limerick East", code: "LET" },
                { name: "Limerick West", code: "LWT" },
                { name: "Kerry North", code: "KYN" }
            ];

            if(electionCode === "gen2011"){
                constituencies.push.apply(constituencies, eleven);
            } else if(electionCode === "gen2007") {
                constituencies.push.apply(constituencies, zeroSeven);
            }

            constituencies.sort(function(a, b){
                if(a.name < b.name) return -1;
                if(a.name > b.name) return 1;
                return 0;
            });

            var html = new EJS({url: templateRoot + 'archive-constituency-options.ejs'}).render({constituencies: constituencies, electionCode: electionCode}, null);
            $(this).empty().append(html);
        },

        drawConstituencyResults: function(data, electionCode){
            var $this = $(this);

            var dataTable = new google.visualization.DataTable();
            dataTable.addColumn('string', 'Party');
            dataTable.addColumn('number', 'Votes');

            for(var x = 0; x < data.constituency.results.length; x++)
            {
                if(data.constituency.results[x].party.toUpperCase() === 'IND' || data.constituency.results[x].party.toUpperCase() === 'OTH'){ continue; }
                dataTable.addRow([data.constituency.results[x].party, data.constituency.results[x].votes]);
            }

            var options = {
                legend: 'none',
                enableInteractivity: false,
                chartArea: {width:'100%', height:'93%'},
                is3D: false,
                colors: $.fn.getSliceColours(data.constituency.results, function(colours){
                    return colours;
                })
            };

            var html = new EJS({url: templateRoot + 'archive-constituency.ejs'}).render({
                electionCode: electionCode,
                constituency: data.constituency
            }, null);

            // Append the rendered constituency data to the DOM
            $this.empty().append(html);

            var chart = new google.visualization.PieChart(document.getElementById('constituency-chart'));
            chart.draw(dataTable, options);
        },

        getSliceColours: function(results, callback){
            var slices = [];

            for(var x = 0; x < results.length; x++){
                if(results[x].party.toUpperCase() === 'IND' || results[x].party.toUpperCase() === 'OTH'){ continue; }

                slices.push(
                    $.fn.getSliceColour(results[x].party.toUpperCase())
                );
            }

            return callback(slices);
        },

        getSliceColour: function(code) {
            switch (code)
            {
                case "FF": return "#40b34f";
                case "FG": return "#2f3590";
                case "GP": return "#b4d144";
                case "LAB": return "#c72831";
                case "OTH": return "#000000";
                case "IND": return "#000000";
                case "IO": return "#000000";
                case "SF": return "#088560";
                case "ULA": return "#FF3300";
                case "SP": return "#ef5b2f";
                case "AAA": return "#c4568b";
                case "CSP": return "#FFFF99";
                case "WP": return "#D73D3D";
                case "PD": return "#3333CC";
                case "SWP": return "#660000";
            }
        }

    });

})(jQuery);