import DS from 'ember-data';

import Ember from 'ember';

import _ from 'lodash/lodash';

export default DS.Model.extend({

    uri: DS.attr('string'),

    issued: DS.attr('date'),

    title: DS.attr('string'),

    language: DS.attr('string'),

    publisher: DS.attr('string'),

    publishers: DS.attr({ defaultValue: function() { return []; } }),

    contributors: DS.attr({ defaultValue: function() { return []; } }),

    geoInfo: DS.attr({ defaultValue: function() { return {}; } }),

    mediaArray: DS.attr({ defaultValue: function() { return []; } }),

    duration_ms: DS.attr('number', {

        defaultValue: function() {

            var self = this;

            var duration = 0;

            Object.keys(this.get('mediaArray')).forEach(function(key) {

                if (!duration && self.get('mediaArray')[key].extent_ms) {

                    duration = self.get('mediaArray')[key].extent_ms;

                }

            });

            return duration;

        }

    }),

    media: Ember.computed('mediaArray', function() {

        var array = [];

        _.forEach(this.get('mediaArray'), function(media) {

            var index = array.findIndex(element => element.format === media.format);

            if(index > -1) {

                if (media.master) {

                    array.splice(index, 1, media);

                }

            } else {

                array.push(media);

            }

        });

        return array;

    }),

    video: Ember.computed('media', function() {

        return this.get('media').findIndex(element => element.format.match(new RegExp('^video/'))) > -1;

    }),

    duration: Ember.computed('duration_ms', function() {

        return this.get('duration_ms')/1000;

    }),

    publishers_disp: Ember.computed('publisher', 'publishers', function() {

        return this.get('publisher')?this.get('publisher'):this.get('publishers').join(', ');

    })

});