<?php
/**
 * WP-CLI commands: wp spinix backup|restore|export-db|list|verify
 *
 * @package Spinix_Migration
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'WP_CLI' ) ) {
	return;
}

class Spinix_CLI {

	/**
	 * Run a job to completion with a progress line.
	 *
	 * @param Spinix_Job $job Job.
	 * @return array Final status.
	 */
	private function drive( $job ) {
		$last = '';
		while ( true ) {
			$s    = $job->step( 30 );
			$line = sprintf( '%5.1f%%  %s', $s['percent'], $s['message'] );
			if ( $line !== $last ) {
				WP_CLI::log( $line );
				$last = $line;
			}
			if ( 'done' === $s['status'] ) {
				foreach ( $s['warnings'] as $w ) {
					WP_CLI::warning( $w );
				}
				return $s;
			}
			if ( 'paused' === $s['status'] ) {
				$e = $s['error'];
				WP_CLI::error( $e['title'] . ': ' . $e['message'] . "\n  How to fix:\n  - " . implode( "\n  - ", $e['fix'] ) . ( $e['details'] ? "\n  Details: " . $e['details'] : '' ) );
			}
		}
	}

	/**
	 * Create a full .spinix backup.
	 *
	 * ## OPTIONS
	 *
	 * [--password=<password>]
	 * : Encrypt the backup.
	 *
	 * [--exclude-media]
	 * [--exclude-plugins]
	 * [--exclude-themes]
	 * [--exclude-db]
	 * [--exclude-cache]
	 * [--note=<note>]
	 *
	 * @param array $args  Args.
	 * @param array $assoc Options.
	 */
	public function backup( $args, $assoc ) {
		$opt = Spinix_Backup_Job::sanitize_options(
			array(
				'password'        => isset( $assoc['password'] ) ? $assoc['password'] : '',
				'exclude_media'   => isset( $assoc['exclude-media'] ),
				'exclude_plugins' => isset( $assoc['exclude-plugins'] ),
				'exclude_themes'  => isset( $assoc['exclude-themes'] ),
				'exclude_db'      => isset( $assoc['exclude-db'] ),
				'exclude_cache'   => isset( $assoc['exclude-cache'] ),
				'note'            => isset( $assoc['note'] ) ? $assoc['note'] : 'WP-CLI',
			)
		);
		try {
			$s = $this->drive( Spinix_Backup_Job::start( $opt ) );
		} catch ( Spinix_Error $e ) {
			WP_CLI::error( $e->getMessage() );
			return;
		}
		WP_CLI::success( 'Backup created: ' . Spinix_Storage::base_dir() . '/' . $s['result']['file'] . ' (' . $s['result']['size_h'] . ')' );
	}

	/**
	 * Restore a backup from the Spinix folder (or a path, which is copied there).
	 *
	 * ## OPTIONS
	 *
	 * <file>
	 * : Backup file name or path.
	 *
	 * [--password=<password>]
	 * [--yes]
	 *
	 * @param array $args  Args.
	 * @param array $assoc Options.
	 */
	public function restore( $args, $assoc ) {
		$file = $args[0];
		if ( file_exists( $file ) && basename( $file ) !== $file ) {
			Spinix_Storage::ensure();
			$dest = Spinix_Storage::base_dir() . '/' . basename( $file );
			if ( realpath( $file ) !== realpath( $dest ) && ! copy( $file, $dest ) ) {
				WP_CLI::error( 'Could not copy the backup into ' . Spinix_Storage::base_dir() );
			}
			$file = basename( $file );
		}
		WP_CLI::confirm( 'This will replace this website with the backup. Continue?', $assoc );
		$opt = Spinix_Restore_Job::sanitize_options(
			array(
				'file'     => $file,
				'password' => isset( $assoc['password'] ) ? $assoc['password'] : '',
			)
		);
		try {
			$r = new Spinix_Archive_Reader( Spinix_Storage::backup_path( $opt['file'] ) );
			if ( $r->encrypted() ) {
				$r->unlock( $opt['password'] );
			}
			$r->close();
			$s = $this->drive( Spinix_Restore_Job::start( $opt ) );
		} catch ( Spinix_Error $e ) {
			WP_CLI::error( $e->getMessage() );
			return;
		}
		WP_CLI::success( $s['result']['summary'] );
	}

	/**
	 * Export the database as a .sql file (like mysqldump, but needs no shell access).
	 *
	 * ## OPTIONS
	 *
	 * [--gzip]
	 *
	 * @subcommand export-db
	 * @param array $args  Args.
	 * @param array $assoc Options.
	 */
	public function export_db( $args, $assoc ) {
		try {
			$s = $this->drive(
				Spinix_Export_Job::start(
					Spinix_Export_Job::sanitize_options(
						array(
							'kind' => 'database',
							'gzip' => isset( $assoc['gzip'] ),
						)
					)
				)
			);
		} catch ( Spinix_Error $e ) {
			WP_CLI::error( $e->getMessage() );
			return;
		}
		WP_CLI::success( 'Database exported: ' . Spinix_Storage::exports_dir() . '/' . $s['result']['download'] );
	}

	/**
	 * List backups.
	 *
	 * @subcommand list
	 */
	public function list_() {
		$rows = array();
		foreach ( Spinix_Storage::list_backups() as $b ) {
			$rows[] = array(
				'name'      => $b['name'],
				'size'      => $b['size_h'],
				'created'   => gmdate( 'Y-m-d H:i', $b['created'] ),
				'source'    => $b['source'],
				'encrypted' => $b['encrypted'] ? 'yes' : 'no',
				'status'    => $b['status'],
			);
		}
		WP_CLI\Utils\format_items( 'table', $rows, array( 'name', 'size', 'created', 'source', 'encrypted', 'status' ) );
	}

	/**
	 * Verify a backup's integrity.
	 *
	 * <file>
	 * : Backup file name.
	 *
	 * [--password=<password>]
	 *
	 * @param array $args  Args.
	 * @param array $assoc Options.
	 */
	public function verify( $args, $assoc ) {
		try {
			$s = $this->drive(
				Spinix_Verify_Job::start(
					array(
						'file'     => $args[0],
						'password' => isset( $assoc['password'] ) ? $assoc['password'] : '',
					)
				)
			);
		} catch ( Spinix_Error $e ) {
			WP_CLI::error( $e->getMessage() );
			return;
		}
		WP_CLI::success( $s['result']['summary'] );
	}
}

WP_CLI::add_command( 'spinix', 'Spinix_CLI' );