<?php
/**
 * This class handles the MainWP Post Backups.
 *
 * @package MainWP/Dashboard
 */

namespace MainWP\Dashboard;

/**
 * Class MainWP_Post_Backup_Handler
 *
 * Handle Backup Post.
 *
 * @package MainWP\Dashboard
 *
 * @uses \MainWP\Dashboard\MainWP_Post_Base_Handler
 */
class MainWP_Post_Backup_Handler extends MainWP_Post_Base_Handler {

	/** @var $instance Singleton MainWP_Post_Backup_Handler. */
	private static $instance = null;

	/**
	 * Create public static instance.
	 *
	 * @static
	 * @return self $instance MainWP_Post_Backup_Handler.
	 */
	public static function instance() {
		if ( null == self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Init backups actions
	 */
	public function init() {
		// Page: ManageBackups.
		$this->add_action( 'mainwp_addbackup', array( &$this, 'mainwp_addbackup' ) );
		if ( mainwp_current_user_have_right( 'dashboard', 'edit_backup_tasks' ) ) {
			$this->add_action( 'mainwp_updatebackup', array( &$this, 'mainwp_updatebackup' ) );
		}
		if ( mainwp_current_user_have_right( 'dashboard', 'delete_backup_tasks' ) ) {
			$this->add_action( 'mainwp_removebackup', array( &$this, 'mainwp_removebackup' ) );
		}
		$this->add_action( 'mainwp_pausebackup', array( &$this, 'mainwp_pausebackup' ) );
		$this->add_action( 'mainwp_resumebackup', array( &$this, 'mainwp_resumebackup' ) );

		$this->add_action( 'mainwp_backuptask_get_sites', array( &$this, 'mainwp_backuptask_get_sites' ) );

		if ( mainwp_current_user_have_right( 'dashboard', 'run_backup_tasks' ) ) {
			$this->add_action( 'mainwp_backuptask_run_site', array( &$this, 'mainwp_backuptask_run_site' ) );
		}
		$this->add_action( 'mainwp_backup_upload_file', array( &$this, 'mainwp_backup_upload_file' ) );

		// Page: backup.
		if ( mainwp_current_user_have_right( 'dashboard', 'run_backup_tasks' ) ) {
			$this->add_action( 'mainwp_backup_run_site', array( &$this, 'mainwp_backup_run_site' ) );
		}
		if ( mainwp_current_user_have_right( 'dashboard', 'execute_backups' ) ) {
			$this->add_action( 'mainwp_backup', array( &$this, 'mainwp_backup' ) );
		}
		$this->add_action( 'mainwp_checkbackups', array( &$this, 'mainwp_checkbackups' ) );
		$this->add_action( 'mainwp_backup_checkpid', array( &$this, 'mainwp_backup_checkpid' ) );
		$this->add_action( 'mainwp_createbackup_getfilesize', array( &$this, 'mainwp_createbackup_getfilesize' ) );
		$this->add_action( 'mainwp_backup_download_file', array( &$this, 'mainwp_backup_download_file' ) );
		$this->add_action( 'mainwp_backup_delete_file', array( &$this, 'mainwp_backup_delete_file' ) );
		$this->add_action( 'mainwp_backup_getfilesize', array( &$this, 'mainwp_backup_getfilesize' ) );
		$this->add_action( 'mainwp_backup_upload_getprogress', array( &$this, 'mainwp_backup_upload_getprogress' ) );
		$this->add_action( 'mainwp_backup_upload_checkstatus', array( &$this, 'mainwp_backup_upload_checkstatus' ) );
	}

	/*
	 * Page: Backup
	 */

	/**
	 * Method mainwp_backup_run_site()
	 *
	 * Run backup task of site
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Backup_Handler::backup()
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup_run_site() {
		$this->secure_request( 'mainwp_backup_run_site' );
		$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : false;
		try {
			if ( ! $site_id ) {
				throw new MainWP_Exception( 'Invalid request' );
			}

			$ret = array( 'result' => MainWP_Backup_Handler::backup( $site_id, 'full', '', '', 1, 1, 1, 1 ) );
			wp_send_json( $ret );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_backup()
	 *
	 * Run backup task
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Backup_Handler::backup()
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup() {
		$this->secure_request( 'mainwp_backup' );
		$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : false;
		try {
			if ( ! $site_id ) {
				throw new MainWP_Exception( 'Invalid request' );
			}

			$excludedFolder = isset( $_POST['exclude'] ) ? trim( $_POST['exclude'], "\n" ) : '';
			$excludedFolder = explode( "\n", $excludedFolder );
			$excludedFolder = array_map( array( 'MainWP_Utility', 'trim_slashes' ), $excludedFolder );
			$excludedFolder = array_map( 'htmlentities', $excludedFolder );
			$excludedFolder = implode( ',', $excludedFolder );

			$type                           = isset( $_POST['type'] ) ? sanitize_text_field( wp_unslash( $_POST['type'] ) ) : '';
			$subfolder                      = isset( $_POST['subfolder'] ) ? sanitize_text_field( wp_unslash( $_POST['subfolder'] ) ) : '';
			$excludebackup                  = isset( $_POST['excludebackup'] ) ? sanitize_text_field( wp_unslash( $_POST['excludebackup'] ) ) : '';
			$excludecache                   = isset( $_POST['excludecache'] ) ? sanitize_text_field( wp_unslash( $_POST['excludecache'] ) ) : '';
			$excludenonwp                   = isset( $_POST['excludenonwp'] ) ? sanitize_text_field( wp_unslash( $_POST['excludenonwp'] ) ) : '';
			$excludezip                     = isset( $_POST['excludezip'] ) ? sanitize_text_field( wp_unslash( $_POST['excludezip'] ) ) : '';
			$filename                       = isset( $_POST['filename'] ) ? sanitize_text_field( wp_unslash( $_POST['filename'] ) ) : '';
			$fileNameUID                    = isset( $_POST['fileNameUID'] ) ? sanitize_text_field( wp_unslash( $_POST['fileNameUID'] ) ) : '';
			$archiveFormat                  = isset( $_POST['archiveFormat'] ) ? sanitize_text_field( wp_unslash( $_POST['archiveFormat'] ) ) : '';
			$maximumFileDescriptorsOverride = isset( $_POST['maximumFileDescriptorsOverride'] ) ? intval( $_POST['maximumFileDescriptorsOverride'] ) : false;
			$maximumFileDescriptorsAuto     = isset( $_POST['maximumFileDescriptorsAuto'] ) ? intval( $_POST['maximumFileDescriptorsAuto'] ) : false;
			$maximumFileDescriptors         = isset( $_POST['maximumFileDescriptors'] ) ? sanitize_text_field( wp_unslash( $_POST['maximumFileDescriptors'] ) ) : '';
			$loadFilesBeforeZip             = isset( $_POST['loadFilesBeforeZip'] ) ? sanitize_text_field( wp_unslash( $_POST['loadFilesBeforeZip'] ) ) : false;
			$pid                            = isset( $_POST['pid'] ) ? intval( $_POST['pid'] ) : false;
			$append                         = isset( $_POST['append'] ) ? intval( $_POST['append'] ) : false;

			$result = MainWP_Backup_Handler::backup( $site_id, $type, $subfolder, $excludedFolder, $excludebackup, $excludecache, $excludenonwp, $excludezip, $filename, $fileNameUID, $archiveFormat, $maximumFileDescriptorsOverride, $maximumFileDescriptorsAuto, $maximumFileDescriptors, $loadFilesBeforeZip, $pid, $append );
			wp_send_json( array( 'result' => $result ) );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_backup_checkpid()
	 *
	 * Check backup task
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Backup_Handler::backup_check_pid()
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup_checkpid() {
		$this->secure_request( 'mainwp_backup_checkpid' );
		$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : false;
		try {
			if ( ! $site_id ) {
				throw new MainWP_Exception( 'Invalid request' );
			}
			$pid       = isset( $_POST['pid'] ) ? intval( $_POST['pid'] ) : false;
			$type      = isset( $_POST['type'] ) ? sanitize_text_field( wp_unslash( $_POST['type'] ) ) : '';
			$subfolder = isset( $_POST['subfolder'] ) ? sanitize_text_field( wp_unslash( $_POST['subfolder'] ) ) : '';
			$filename  = isset( $_POST['filename'] ) ? sanitize_text_field( wp_unslash( $_POST['filename'] ) ) : '';
			wp_send_json( MainWP_Backup_Handler::backup_check_pid( $site_id, $pid, $type, $subfolder, $filename ) );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_backup_download_file()
	 *
	 * Download backup file
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Backup_Handler::backup_download_file()
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup_download_file() {
		$this->secure_request( 'mainwp_backup_download_file' );
		$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : false;
		try {
			if ( ! $site_id ) {
				throw new MainWP_Exception( 'Invalid request' );
			}
			$type  = isset( $_POST['type'] ) ? sanitize_text_field( wp_unslash( $_POST['type'] ) ) : '';
			$url   = isset( $_POST['url'] ) ? sanitize_text_field( wp_unslash( $_POST['url'] ) ) : '';
			$local = isset( $_POST['local'] ) ? sanitize_text_field( wp_unslash( $_POST['local'] ) ) : '';
			die( wp_json_encode( array( 'result' => MainWP_Backup_Handler::backup_download_file( $site_id, $type, $url, $local ) ) ) );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_backup_delete_file()
	 *
	 * Delete backup file
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Backup_Handler::backup_delete_file()
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup_delete_file() {
		$this->secure_request( 'mainwp_backup_delete_file' );
		$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : false;
		try {
			if ( ! $site_id ) {
				throw new MainWP_Exception( __( 'Invalid request!', 'mainwp' ) );
			}

			$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : 0;
			$file    = isset( $_POST['file'] ) ? sanitize_text_field( wp_unslash( $_POST['file'] ) ) : '';

			die( wp_json_encode( array( 'result' => MainWP_Backup_Handler::backup_delete_file( $site_id, $file ) ) ) );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_createbackup_getfilesize()
	 *
	 * Get create backup file size.
	 *
	 * @throws \Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Connect::fetch_url_authed()
	 * @uses \MainWP\Dashboard\MainWP_DB::get_website_by_id()
	 */
	public function mainwp_createbackup_getfilesize() {
		$this->secure_request( 'mainwp_createbackup_getfilesize' );

		try {
			if ( ! isset( $_POST['siteId'] ) ) {
				throw new \Exception( __( 'No site selected!', 'mainwp' ) );
			}
			$siteId      = isset( $_POST['siteId'] ) ? intval( $_POST['siteId'] ) : '';
			$fileName    = isset( $_POST['fileName'] ) ? sanitize_text_field( wp_unslash( $_POST['fileName'] ) ) : '';
			$fileNameUID = isset( $_POST['fileNameUID'] ) ? sanitize_text_field( wp_unslash( $_POST['fileNameUID'] ) ) : '';
			$type        = isset( $_POST['type'] ) ? sanitize_text_field( wp_unslash( $_POST['type'] ) ) : '';

			$website = MainWP_DB::instance()->get_website_by_id( $siteId );
			if ( ! $website ) {
				throw new \Exception( __( 'No site selected!', 'mainwp' ) );
			}

			MainWP_Utility::end_session();
			// Send request to the childsite!
			$result = MainWP_Connect::fetch_url_authed(
				$website,
				'createBackupPoll',
				array(
					'fileName'    => $fileName,
					'fileNameUID' => $fileNameUID,
					'type'        => $type,
				)
			);

			if ( ! isset( $result['size'] ) ) {
				throw new \Exception( __( 'Invalid response!', 'mainwp' ) );
			}

			if ( MainWP_Utility::ctype_digit( $result['size'] ) ) {
				$output = array( 'size' => $result['size'] );
			} else {
				$output = array();
			}
		} catch ( \Exception $e ) {
			$output = array( 'error' => $e->getMessage() );
		}

		die( wp_json_encode( $output ) );
	}

	/**
	 * Method mainwp_backup_getfilesize()
	 *
	 * Get backup file size
	 *
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 * @uses \MainWP\Dashboard\MainWP_Manage_Sites::backup_get_file_size()
	 */
	public function mainwp_backup_getfilesize() {
		$this->secure_request( 'mainwp_backup_getfilesize' );

		try {
			$local = isset( $_POST['local'] ) ? sanitize_text_field( wp_unslash( $_POST['local'] ) ) : '';
			die( wp_json_encode( array( 'result' => MainWP_Manage_Sites::backup_get_file_size( $local ) ) ) );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_backup_upload_checkstatus()
	 *
	 * Check upload status
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup_upload_checkstatus() {
		$this->secure_request( 'mainwp_backup_upload_checkstatus' );

		try {
			$unique = isset( $_POST['unique'] ) ? sanitize_text_field( wp_unslash( $_POST['unique'] ) ) : false;
			$array  = get_option( 'mainwp_upload_progress' );
			$info   = apply_filters( 'mainwp_remote_destination_info', array(), ( isset( $_POST['remote_destination'] ) ? sanitize_text_field( wp_unslash( $_POST['remote_destination'] ) ) : '' ) );

			if ( ! is_array( $array ) || empty( $unique ) || empty( $array[ $unique ] ) || empty( $array[ $unique ]['dts'] ) ) {
				die(
					wp_json_encode(
						array(
							'status' => 'stalled',
							'info'   => $info,
						)
					)
				);
			} elseif ( isset( $array[ $unique ]['finished'] ) ) {
				die(
					wp_json_encode(
						array(
							'status' => 'done',
							'info'   => $info,
						)
					)
				);
			} else {

				if ( isset( $array[ $unique ]['dts'] ) && intval( $array[ $unique ]['dts'] ) < ( time() - ( 2 * 60 ) ) ) { // 2minutes.
					die(
						wp_json_encode(
							array(
								'status' => 'stalled',
								'info'   => $info,
							)
						)
					);
				} else {
					die(
						wp_json_encode(
							array(
								'status' => 'busy',
								'info'   => $info,
							)
						)
					);
				}
			}
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_backup_upload_getprogress()
	 *
	 * Get progress status
	 *
	 * @throws MainWP_Exception on finished or errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 */
	public function mainwp_backup_upload_getprogress() {
		$this->secure_request( 'mainwp_backup_upload_getprogress' );

		try {
			$array  = get_option( 'mainwp_upload_progress' );
			$unique = isset( $_POST['unique'] ) ? sanitize_text_field( wp_unslash( $_POST['unique'] ) ) : false;

			if ( ! is_array( $array ) || ! isset( $array[ $unique ] ) ) {
				die( wp_json_encode( array( 'result' => 0 ) ) );
			} elseif ( isset( $array[ $unique ]['finished'] ) ) {
				throw new MainWP_Exception( __( 'finished...', 'maiwnp' ) );
			} else {
				wp_send_json( array( 'result' => ( isset( $array[ $unique ]['offset'] ) ? $array[ $unique ]['offset'] : $array[ $unique ] ) ) );
			}
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/*
	 * Page: ManageBackups
	 */

	/**
	 * Method mainwp_addbackup()
	 *
	 * Add task to the database.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::add_backup()
	 */
	public function mainwp_addbackup() {
		$this->secure_request( 'mainwp_addbackup' );

		MainWP_Manage_Backups_Handler::add_backup();
	}

	/**
	 * Method mainwp_updatebackup()
	 *
	 * Update task.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::update_backup()
	 */
	public function mainwp_updatebackup() {
		$this->secure_request( 'mainwp_updatebackup' );

		MainWP_Manage_Backups_Handler::update_backup();
	}

	/**
	 * Method mainwp_removebackup()
	 *
	 * Remove a task from MainWP.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::remove_backup()
	 */
	public function mainwp_removebackup() {
		$this->secure_request( 'mainwp_removebackup' );

		MainWP_Manage_Backups_Handler::remove_backup();
	}

	/**
	 * Method mainwp_resumebackup()
	 *
	 * Resume backup task.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::resume_backup()
	 */
	public function mainwp_resumebackup() {
		$this->secure_request( 'mainwp_resumebackup' );

		MainWP_Manage_Backups_Handler::resume_backup();
	}

	/**
	 * Method mainwp_pausebackup()
	 *
	 * Pause backup task.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::pause_backup()
	 */
	public function mainwp_pausebackup() {
		$this->secure_request( 'mainwp_pausebackup' );

		MainWP_Manage_Backups_Handler::pause_backup();
	}

	/**
	 * Method mainwp_backuptask_get_sites()
	 *
	 * Get sites of backup task.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::get_backup_task_sites()
	 */
	public function mainwp_backuptask_get_sites() {
		$this->secure_request( 'mainwp_backuptask_get_sites' );

		$taskID = isset( $_POST['task_id'] ) ? intval( $_POST['task_id'] ) : 0;

		wp_send_json( array( 'result' => MainWP_Manage_Backups_Handler::get_backup_task_sites( $taskID ) ) );
	}

	/**
	 * Method mainwp_backuptask_run_site()
	 *
	 * Run backup task of site.
	 *
	 * @throws MainWP_Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Exception
	 * @uses \MainWP\Dashboard\MainWP_Manage_Backups_Handler::backup()
	 */
	public function mainwp_backuptask_run_site() {
		try {
			$this->secure_request( 'mainwp_backuptask_run_site' );
			$site_id = isset( $_POST['site_id'] ) ? intval( $_POST['site_id'] ) : false;
			$task_id = isset( $_POST['task_id'] ) ? intval( $_POST['task_id'] ) : false;
			if ( ! $site_id || ! $task_id ) {
				throw new MainWP_Exception( 'Invalid request' );
			}

			$fileNameUID = isset( $_POST['fileNameUID'] ) ? sanitize_text_field( wp_unslash( $_POST['fileNameUID'] ) ) : false;
			wp_send_json( array( 'result' => MainWP_Manage_Backups_Handler::backup( $task_id, $site_id, $fileNameUID ) ) );
		} catch ( MainWP_Exception $e ) {
			die(
				wp_json_encode(
					array(
						'error' => array(
							'message' => $e->getMessage(),
							'extra'   => $e->get_message_extra(),
						),
					)
				)
			);
		}
	}

	/**
	 * Method mainwp_checkbackups()
	 *
	 * Check backup status.
	 *
	 * @throws \Exception on errors.
	 *
	 * @uses \MainWP\Dashboard\MainWP_Updates_Overview::check_backups()
	 */
	public function mainwp_checkbackups() {
		$this->secure_request( 'mainwp_checkbackups' );

		try {
			wp_send_json( array( 'result' => MainWP_Updates_Overview::check_backups() ) );
		} catch ( \Exception $e ) {
			die( wp_json_encode( array( 'error' => $e->getMessage() ) ) );
		}
	}
}
