/* ===========================================================
 * trumbowyg.upload.js v1.1
 * Upload plugin for Trumbowyg
 * http://alex-d.github.com/Trumbowyg
 * ===========================================================
 * Author : Alexandre Demode (Alex-D)
 *          Twitter : @AlexandreDemode
 *          Website : alex-d.fr
 */

(function ($) {
    'use strict';

    var defaultOptions = {
        serverPath: './src/plugins/upload/trumbowyg.upload.php',
        fileFieldName: 'fileToUpload',
        data: [],
        headers: {},
        xhrFields: {},
        urlPropertyName: 'file',
        statusPropertyName: 'success',
        success: undefined,
        error: undefined
    };

    function getDeep(object, propertyParts) {
        var mainProperty = propertyParts.shift(),
            otherProperties = propertyParts;

        if (object !== null) {
            if (otherProperties.length === 0) {
                return object[mainProperty];
            }

            if (typeof object === 'object') {
                return getDeep(object[mainProperty], otherProperties);
            }
        }
        return object;
    }

    addXhrProgressEvent();

    $.extend(true, $.trumbowyg, {
        langs: {
            // jshint camelcase:false
            en: {
                upload: 'Upload',
                file: 'File',
                uploadError: 'Error'
            },
            sk: {
                upload: 'Nahrať',
                file: 'Súbor',
                uploadError: 'Chyba'
            },
            fr: {
                upload: 'Envoi',
                file: 'Fichier',
                uploadError: 'Erreur'
            },
            cs: {
                upload: 'Nahrát obrázek',
                file: 'Soubor',
                uploadError: 'Chyba'
            },
            zh_cn: {
                upload: '上传',
                file: '文件',
                uploadError: '错误'
            }
        },
        // jshint camelcase:true

        plugins: {
            upload: {
                init: function (trumbowyg) {
                    trumbowyg.o.plugins.upload = $.extend(true, {}, defaultOptions, trumbowyg.o.plugins.upload || {});
                    var btnDef = {
                            fn: function () {
                                trumbowyg.saveRange();

                                var file,
                                    prefix = trumbowyg.o.prefix;

                                var $modal = trumbowyg.openModalInsert(
                                    // Title
                                    trumbowyg.lang.upload,

                                    // Fields
                                    {
                                        file: {
                                            type: 'file',
                                            required: true
                                        },
                                        alt: {
                                            label: 'description',
                                            value: trumbowyg.getRangeText()
                                        }
                                    },

                                    // Callback
                                    function (values) {
                                        var data = new FormData();
                                        data.append(trumbowyg.o.plugins.upload.fileFieldName, file);

                                        trumbowyg.o.plugins.upload.data.map(function (cur) {
                                            data.append(cur.name, cur.value);
                                        });

                                        if ($('.' + prefix + 'progress', $modal).length === 0) {
                                            $('.' + prefix + 'modal-title', $modal)
                                                .after(
                                                    $('<div/>', {
                                                        'class': prefix + 'progress'
                                                    }).append(
                                                        $('<div/>', {
                                                            'class': prefix + 'progress-bar'
                                                        })
                                                    )
                                                );
                                        }

                                        $.ajax({
                                            url: trumbowyg.o.plugins.upload.serverPath,
                                            headers: trumbowyg.o.plugins.upload.headers,
                                            xhrFields: trumbowyg.o.plugins.upload.xhrFields,
                                            type: 'POST',
                                            data: data,
                                            cache: false,
                                            dataType: 'json',
                                            processData: false,
                                            contentType: false,

                                            progressUpload: function (e) {
                                                $('.' + prefix + 'progress-bar').stop().animate({
                                                    width: Math.round(e.loaded * 100 / e.total) + '%'
                                                }, 200);
                                            },

                                            success: trumbowyg.o.plugins.upload.success || function (data) {
                                                if (!!getDeep(data, trumbowyg.o.plugins.upload.statusPropertyName.split('.'))) {
                                                    var url = getDeep(data, trumbowyg.o.plugins.upload.urlPropertyName.split('.'));
                                                    trumbowyg.execCmd('insertImage', url);
                                                    $('img[src="' + url + '"]:not([alt])', trumbowyg.$box).attr('alt', values.alt);
                                                    setTimeout(function () {
                                                        trumbowyg.closeModal();
                                                    }, 250);
                                                } else {
                                                    trumbowyg.addErrorOnModalField(
                                                        $('input[type=file]', $modal),
                                                        trumbowyg.lang[data.message]
                                                    );
                                                }
                                            },
                                            error: trumbowyg.o.plugins.upload.error || function () {
                                                trumbowyg.addErrorOnModalField(
                                                    $('input[type=file]', $modal),
                                                    trumbowyg.lang.uploadError
                                                );
                                            }
                                        });
                                    }
                                );

                                $('input[type=file]').on('change', function (e) {
                                    try {
                                        // If multiple files allowed, we just get the first.
                                        file = e.target.files[0];
                                    } catch (err) {
                                        // In IE8, multiple files not allowed
                                        file = e.target.value;
                                    }
                                });
                            }
                        };

                    trumbowyg.addBtnDef('upload', btnDef);
                }
            }
        }
    });


    function addXhrProgressEvent() {
        if (!$.trumbowyg && !$.trumbowyg.addedXhrProgressEvent) {   // Avoid adding progress event multiple times
            var originalXhr = $.ajaxSettings.xhr;
            $.ajaxSetup({
                xhr: function () {
                    var req = originalXhr(),
                        that = this;
                    if (req && typeof req.upload === 'object' && that.progressUpload !== undefined) {
                        req.upload.addEventListener('progress', function (e) {
                            that.progressUpload(e);
                        }, false);
                    }

                    return req;
                }
            });
            $.trumbowyg.addedXhrProgressEvent = true;
        }
    }
})(jQuery);