/* global conjur, jQuery, _, async */

(function(conjur, $, _, async, errback) {
    'use strict';

    var Generic = this.Generic;

    var Layer = this.Layer = function(args) {
        if (!(this instanceof Layer)) {
            return new Layer(args);
        }

        var superArguments = Array.prototype.slice.call(arguments);
        superArguments.unshift('layer');
        Generic.apply(this, superArguments);

        return undefined;
    };

    Layer.prototype = Object.create(Generic.prototype);
    Layer.prototype.constructor = Layer;

    Layer.prototype.fetch = function(callback, customErrback) {
        var id = this.id;

        if (typeof(customErrback) === 'undefined') {
            customErrback = errback; // reset to default
        }

        function members(role) {
            return function(cb) {
                $.ajax({
                    url: '/api/authz/' +
                        conjur.app.configuration.account +
                        '/roles/' +
                        role +
                        '?members',
                    success: function(result) {
                        cb(null, result);
                    },
                    error: cb
                });
            };
        }

        async.parallel([
            this.attributes.bind(this),
            this.ownedResources.bind(this),
            members('@/layer/' + id + '/use_host'),
            members('@/layer/' + id + '/admin_host'),
            this.allRoles.bind(this),
            this.resource.bind(this)
        ], function(err, results) {
            if (err) {
                return customErrback(err.status);
            }

            callback({
                layer: results[0],
                owned: results[1],
                users: _.pluck(results[2], 'member'),
                admins: _.pluck(results[3], 'member'),
                roles: results[4],
                annotations: results[5].annotations,
                owner: results[5].owner
            });

            return undefined;
        });
    };

}).bind(conjur.models.Record)
(
    conjur,
    jQuery,
    _,
    async,
    conjur.utils.errback
);