/**
 * @requires $ jQuery
 * @requires _ UnderscoreJS
 */

(function (/* Object */ ns) {
    'use strict';

    /**
     * @alias app.ecommerce.order.admin.CartInformation
     * @constructor
     */
    ns.CartInformation = function () {
        this.construct.apply(this);
    };

    ns.CartInformation.prototype = {

    rules: {
        'editClick': {
            'show': ['.save-item-price', '.cancel-item-price', '.input-item-price'],
            'hide': ['.static-item-price', '.error-item-price']
        },
        'cancelClick': {
            'show': ['.edit-item-price', '.static-item-price'],
            'hide': ['.save-item-price', '.input-item-price', '.error-item-price']
        },
        'saveClick': {
            'success': {
                'show':['.edit-item-price', '.static-item-price'],
                'hide': ['.error-item-price', '.input-item-price', '.save-item-price', '.cancel-item-price']
            },
            'failure': {
                'show':['.error-item-price'],
                'hide': []
            }
        }
    },

    construct: function(){
        this.initEditLinks();
        this.initCancelLinks();
        this.initSaveLink();
    },

    initEditLinks: function() {
        $('.edit-item-price a').click(_.bind(this.processEditClick, this));
    },

    initCancelLinks: function() {
        $('.cancel-item-price a').click(_.bind(this.processCancelClick, this));
    },

    initSaveLink: function() {
        $('.save-item-price a').click(_.bind(this.processSaveClick, this));
    },

    processLinkClick: function(e, type) {
        var link = $(e.currentTarget);
        link.parent().hide();

        var rules = this.rules[type + 'Click'];

        for (var i in rules.hide) {
            if (!rules.hide.hasOwnProperty(i)) {
                continue;
            }
            link.parent().siblings(rules.hide[i]).hide()
        }

        for (i in rules.show) {
            if (!rules.show.hasOwnProperty(i)) {
                continue;
            }
            link.parent().siblings(rules.show[i]).show()
        }
    },

    processEditClick: function(e) {
        this.processLinkClick(e, 'edit');
    },

    processCancelClick: function(e) {
        var cancelLink = $(e.currentTarget);
        this.processLinkClick(e, 'cancel');

        var price = cancelLink.parent().siblings('.static-item-price').text().trim();
        price = price.replace('$', '');
        $('#itemPrice-' + cancelLink.data('itemId')).val(price);
    },

    processSaveClick: function(e) {
        var saveLink = $(e.currentTarget);

        var params = {
            dataType: 'json',
            action: 'updateItemPrice',
            'itemId': saveLink.data('itemId'),
            'price': $('#itemPrice-' + saveLink.data('itemId')).val(),
            'orderId': saveLink.data('orderId')
        };

        qs.ajax(qs.constant('BASE_URL') + '/' + qs.constant('CURRENT_PAGE'), params)
          .done(_.bind(this.onSuccess, this, saveLink))
          .fail(_.bind(this.onFail, this, saveLink));
    },

    onSuccess: function(saveLink, data){
        if ('ok' == data.success) {
            this.updatePrices(saveLink, data);
        } else {
            this.showErrors(saveLink, data);
        }
    },

    onFail: function(saveLink){
        this.showErrors(saveLink, {'errors': 'Connection lost. Please try again later.' });
    },

    processResponse: function(rules, saveLink){
        for (var i in rules.hide) {
            if (!rules.hide.hasOwnProperty(i)) {
                continue;
            }
            saveLink.parent().siblings(rules.hide[i]).hide()
        }

        for (i in rules.show) {
            if (!rules.show.hasOwnProperty(i)) {
                continue;
            }
            saveLink.parent().siblings(rules.show[i]).show()
        }
    },

    updatePrices: function(saveLink, data)
    {
        saveLink.parent().siblings('.static-item-price').html('$' + data.itemPrice);
        saveLink.parent().siblings('.input-item-price').val(data.itemPrice);
        $('#item-total-' + saveLink.data('itemId')).html('$' + data.itemTotalPrice);
        saveLink.parent().hide();

        this.processResponse(this.rules.saveClick.success, saveLink);

        $('.cart_total_sum').html(data.renderedSummary);
    },

    showErrors: function(saveLink, data) {
        this.processResponse(this.rules.saveClick.failure, saveLink);
        saveLink.parent().siblings('.error-item-price').html(data.errors);
    }
}
})(qs.defineNS('app.ecommerce.order.admin'));