import Ember from 'ember';

import d3 from 'd3';

import ENV from 'app-client/config/environment';

export default Ember.Component.extend({

    classNames: ['discourses-component'],

    constants: Ember.inject.service(),

    filter: Ember.inject.service(),

    didRender: function() {

        var self = this;

        var baseURL = ENV.rootURL.replace(/\/$/,"")+'/api/v1';

        d3.json(baseURL + "/discourses", function(discourses) {

            var array = Object.keys(discourses).map(function (key) { return discourses[key].count; });

            var sum = array.reduce(function(a, b) { return a + b; });

            var average = sum / array.length;

            var width = self.$().parent().width();

            var height = self.$().parent().height() - self.$().siblings().outerHeight(true);

            var bubble = d3.layout.pack()

                .sort(function comparator(a, b) { return a.value + b.value; })

                .size([width, height])

                .value(function(d){

                    return Math.floor((((d.value - oldMin) * (newMax - newMin)) / (oldMax - oldMin)) + newMin);

                })

                .padding(25);

            var element = d3.select('#' + self.get('elementId'));

            var bubbles = bubble.nodes(self.createNodes(discourses));

            var caption = element.append("div")

                .attr("class", "caption");

            var caption_nodes = caption.selectAll(".node")

                .data(bubbles);

            caption_nodes.enter().append("div")

                .attr("class", function(d) { return d.children ? " category": " item"; });

            var item = caption.selectAll(".item")

                .style("width", function(d) { return (d.r * 2) + 'px'; })

                .style("height", function(d) { return (d.r * 2) + 'px'; })

                .style("left", function(d) { return d.x - d.r + 'px'; })

                .style("top", function(d) { return d.y - d.r + 'px'; })

                .style("font-size", function(d) {

                    return Math.floor((((d.value - oldMin) * (13 - 11)) / (oldMax - oldMin)) + 11) + 'px';

                })

                .on('click', function(d) {

                    self.get('filter').set('discourse', d.id);

                });

            item.append("span")

                .html(function(d) { return d.name + ' <span class="count">(' + d.value + ')</span>'; })

                .style("display", function(d) { return d.children ? 'none' : 'inline-block'; })

                .style("width", function() { return Ember.$(this).parent().width() > Ember.$(this).width() ? Ember.$(this).parent().width() + 'px' : ''; })

                .style("margin-left", function() { return ( Ember.$(this).width() > Ember.$(this).parent().width() ? - ( Ember.$(this).width() / 2 ) + ( Ember.$(this).parent().width() / 2 ) : 0 ) + 'px'; })

                .style("margin-top", function() { return Ember.$(this).parent().height() / 2 - Ember.$(this).height() / 2 + 'px'; });

            var svg = element.append("svg")

                .style("width", width + "px")

                .style("height", height + "px")

                .attr("class", "bubble");

            var svg_nodes = svg.selectAll(".node")

                .data(bubbles);

            svg_nodes.enter().append("g")

                .attr("class", function(d) { return "node" + (!d.children ? " leaf" : ""); })

                .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });

            var leaf = svg.selectAll(".leaf")

                .on('click', function(d) {

                    self.get('filter').set('discourse', d.id);

                });

            leaf.append("circle")

                .attr("r", function(d) { return d.r; })

                .attr("fill", function(d) { return d.fill; })

                .attr("stroke", function(d) { return d.stroke; });

            element.style("height", height + "px");

        });

        this._super(...arguments);

    },

    createNodes: function(json) {

        var self = this;

        var nodes = {};

        var children = {};

        Object.keys(json).forEach(function(key) {

            var discourse = json[key];

            var category_key = self.get('constants').DISCOURSE_CATEGORY_KEYS[key];

            var category_value = self.get('constants').DISCOURSE_CATEGORY_VALUES[category_key];

            children[category_key] = children[category_key] || {};

            children[category_key]['name'] = category_key;

            children[category_key]['children'] = children[category_key]['children'] || [];

            children[category_key]['children'].push({

                'id': key,

                'name': discourse.label,

                'value': discourse.count,

                'fill': category_value.fill,

                'stroke': category_value.stroke

            });

        });

        nodes.children = [];

        Object.keys(children).forEach(function(key) {

            nodes.children.push(children[key]);

        });

        return nodes;

    }

});