/**
 * Nextcloud - passman
 *
 * @copyright Copyright (c) 2016, Sander Brand (brantje@gmail.com)
 * @copyright Copyright (c) 2016, Marcos Zuriaga Miguel (wolfi@wolfi.es)
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

// Importers should always start with this
if (!window['PassmanExporter']) {
	var PassmanExporter = {
		getCredentialsWithFiles: function (credentials, FileService, EncryptService, _log, $translate) {
			var t = {
				cred: credentials,
				FS: FileService,
				ES: EncryptService
			};
			/** global: C_Promise */
			return new C_Promise(function () {
				var _this = this.parent;
				var credentials = _this.cred;
				this.parent.total = 0;
				this.parent.finished = 0;
				this.parent.fileGUID_cred = [];
				this.parent.files = [];
				this.parent.step = (function (file) {
					this.parent.finished++;
					this.call_progress({
						total: this.parent.total,
						finished: this.parent.finished
					});

					var dta = this.parent.fileGUID_cred[file.guid];

					file.filename = this.parent.ES.decryptString(file.filename, this.parent.cred[dta.cred_pos].vault_key);
					file.file_data = this.parent.ES.decryptString(file.file_data, this.parent.cred[dta.cred_pos].vault_key);

					// Files and custom_fields have different field structure
					if (dta.on === 'files') {
						this.parent.cred[dta.cred_pos][dta.on][dta.at] = file;
					} else {
						this.parent.cred[dta.cred_pos][dta.on][dta.at].value = file;
					}

					// We have finished downloading everything, so let's hand over job to somewhere else!
					if (this.parent.total === this.parent.finished) {
						this.call_then(this.parent.cred);
					}
				}).bind(this);
				this.parent.stepFailed = (function (error) {
					_log.push($translate.instant('export.decrypt.error', {credential: error.config.filename}));
					this.parent.finished++;
					this.call_progress({
						total: this.parent.total,
						finished: this.parent.finished
					});

					// We have finished downloading everything, so let's hand over job to somewhere else!
					if (this.parent.total === this.parent.finished) {
						this.call_then(this.parent.cred);
					}
				}).bind(this);

				for (var i = 0; i < credentials.length; i++) {

					var item = credentials[i];

					// Custom fields
					for (c = 0; c < item.custom_fields.length; c++) {
						var cf = item.custom_fields[c];
						if (cf.field_type === 'file') {
							this.parent.total++;
							this.parent.fileGUID_cred[cf.value.guid] = {
								cred_pos: i,
								on: 'custom_fields',
								at: c
							};

							this.parent.FS.getFile(cf.value).then((function (data) {
								this.parent.step(data);
							}).bind(this), (function (error) {
								this.parent.stepFailed(error);
							}).bind(this));
						}
					}

					// Also get all files
					for (var c = 0; c < item.files.length; c++) {
						this.parent.total++;
						this.parent.fileGUID_cred[item.files[c].guid] = {
							cred_pos: i,
							on: 'files',
							at: c
						};

						this.parent.FS.getFile(item.files[c]).then((function (data) {
							this.parent.step(data);
						}).bind(this), (function (error) {
							this.parent.stepFailed(error);
						}).bind(this));
					}
				}

				// We have finished downloading everything, so let's hand over job to somewhere else!
				console.warn("parent.total " + this.parent.total);
				if (this.parent.total === 0) {
					this.call_then(this.parent.cred);
				}
			}, t);
		}
	};
}