/*------------------------------------------------------------------------------------------------------------------------
 @package: Arkiwi Upload

 @author: cek
 @www: arkiwi.org

 @copyright: COPYRIGHT 25 cek
 @license: MIT

 =============================================================================
 Filename: arkiwi.js
 =============================================================================
/*------------------------------------------------------------------------------------------------------------------------*/

var ARKIWI = ARKIWI || {};

ARKIWI.Uploader = function (uploaderUrl, defaultParameters, formName, sessionUploadProgressName) {
    this.uploaderUrl = uploaderUrl;
    this.defaultParameters = defaultParameters || '';
    this.formName = formName || 'arkiwiUploadForm';
    this.sessionUploadProgressName = sessionUploadProgressName || 'PHP_SESSION_UPLOAD_PROGRESS';
};

ARKIWI.Uploader.constructor = ARKIWI.Uploader;

/* Invia un file all'uploader. */
ARKIWI.Uploader.prototype.upload = function (file, destinationFolderBase64, callbacks) {
    var xhr = new XMLHttpRequest();
    xhr.withCredentials = true;

    var self = this;

    if (callbacks) {
        xhr.upload.addEventListener("progress", function(e) {
            callbacks.progress(e);
        }, false);

        //we need to add the event listener to xhr, not to xhr.upload
        xhr.addEventListener("load", function(e){
            callbacks.load(e);
        }, false);

        xhr.upload.addEventListener("error", function(e){
            callbacks.error(e);
        }, false);
    }

    xhr.open("POST", this.uploaderUrl + '/upload/' + destinationFolderBase64 + '/?' + this.defaultParameters, true);

    var fileData = new FormData();
    fileData.append("arkiwiuploadedfile", file);
    // These extra params aren't necessary but show that you can include other data.
    fileData.append("arkiwiuploadedfilename", file.name);

    xhr.send(fileData);
};

/* Aggiunge o sovrascrive i metadati di un file. */
ARKIWI.Uploader.prototype.listMetadata = function (item64, callback) {
    $.ajax({
        url: this.uploaderUrl + '/listmetadata/' + item64 + '/?' + this.defaultParameters,
        type: 'GET',
        async: true,
        cache: false,
        context: this,
        data: '',
        dataType: 'json',
        error: function (xhr, status, error) {
            if (status != 'parsererror')
                throw 'Arkiwi.listMetadata(): status ' + status + ' error ' + error;
            else {
                if (callback)
                    callback(JSON.parse("[]"));
            }
        },
        success: function (result, status, xhr) {
            if (callback != undefined)
                callback(result);
        },
        complete: function (xhr, status) {}
    });
};

/* Aggiunge o sovrascrive i metadati di un file. */
ARKIWI.Uploader.prototype.modifyMetadata = function (item64, jsonKVString, callback) {
    $.ajax({
        url: this.uploaderUrl + '/modifymetadata/' + item64 + '/?' + this.defaultParameters,
        type: 'POST',
        async: true,
        cache: false,
        context: this,
        data: jsonKVString,
        dataType: 'json',
        contentType: "application/json",
        error: function (xhr, status, error) {
            throw 'Arkiwi.modifyMetadata(): status ' + status + ' error ' + error;
        },
        success: function (result, status, xhr) {
            if (callback)
                callback(result);
        },
        complete: function (xhr, status) {}
    });
};

/* Aggiunge o sovrascrive i metadati di un file. */
ARKIWI.Uploader.prototype.createDirectory = function (item64, newDirectory, callback) {
    $.ajax({
        url: this.uploaderUrl + '/createdirectory/' + item64 + '/?' + this.defaultParameters,
        type: 'POST',
        async: true,
        cache: false,
        context: this,
        data: JSON.stringify({directory : newDirectory}),
        dataType: 'text',
        contentType: "html/text",
        error: function (xhr, status, error) {
            throw 'Arkiwi.createDirectory(): status ' + status + ' error ' + error;
        },
        success: function (result, status, xhr) {
            if (callback != undefined)
                callback(result);
        },
        complete: function (xhr, status) {}
    });
};