<?php
/**
 * WP-CLI commands: wp prodtabs …
 *
 * @package Prodtabs
 */

namespace Prodtabs;

defined( 'ABSPATH' ) || exit;

/**
 * Manage product tabs from the command line.
 */
final class Cli {

	/**
	 * Lists the tabs of a product, in shop order.
	 *
	 * ## OPTIONS
	 *
	 * <product-id>
	 * : Product id.
	 *
	 * [--format=<format>]
	 * : table, json or csv.
	 * ---
	 * default: table
	 * ---
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Options.
	 */
	public function list( $args, $assoc_args ): void {
		$id      = absint( $args[0] );
		$entries = Product_Tabs::get( $id );
		$rows    = array();
		foreach ( $entries as $entry ) {
			$rows[] = array(
				'type'       => $entry['type'],
				'key'        => $entry['key'],
				'title'      => $entry['title'] ?? ( isset( $entry['library_id'] ) ? (string) get_the_title( (int) $entry['library_id'] ) : '' ),
				'anchor'     => $entry['anchor'] ?? '',
				'library'    => $entry['library_id'] ?? ( ! empty( $entry['origin'] ) ? 'from ' . $entry['origin'] : '' ),
				'visible'    => null === $entry['visible'] ? 'settings' : ( $entry['visible'] ? 'yes' : 'no' ),
				'translated' => isset( $entry['translated'] ) ? ( $entry['translated'] ? 'yes' : 'no' ) : '',
			);
		}
		\WP_CLI\Utils\format_items( $assoc_args['format'] ?? 'table', $rows, array( 'type', 'key', 'title', 'anchor', 'library', 'visible', 'translated' ) );
	}

	/**
	 * Imports the tabs of Custom Product Tabs for WooCommerce (YIKES). Its data is read, never changed.
	 *
	 * ## OPTIONS
	 *
	 * [--dry-run]
	 * : Show what would be imported, write nothing.
	 *
	 * [--products[=<ids>]]
	 * : Product ids separated by commas. All the products with YIKES tabs by default.
	 *
	 * [--overwrite]
	 * : Import again the products that already have ProdTabs tabs (imported, or made by hand), and rewrite the shared
	 * tabs already imported. The tabs they had before their first import are put back by --undo.
	 *
	 * [--the-content=<yes|no>]
	 * : Format tab content with the full the_content filter. By default, as YIKES did on the first import, and
	 * unchanged on the next ones.
	 *
	 * [--batch=<number>]
	 * : Products per batch.
	 * ---
	 * default: 50
	 * ---
	 *
	 * [--undo]
	 * : Undo the import: the imported products get back the ProdTabs tabs they had before it (usually none), and the
	 * shared tabs created by the import go to the trash, except those that other products use since.
	 *
	 * [--yes]
	 * : Answer yes to the confirmation of --undo.
	 *
	 * ## EXAMPLES
	 *
	 *     wp prodtabs import-yikes --dry-run
	 *     wp prodtabs import-yikes --products=14,15
	 *     wp prodtabs import-yikes --undo
	 *
	 * @subcommand import-yikes
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Options.
	 */
	public function import_yikes( $args, $assoc_args ): void {
		// An empty list means every product: --products without any id (an empty variable, a SKU) stops here.
		$products = array();
		if ( isset( $assoc_args['products'] ) ) {
			$products = true === $assoc_args['products'] ? array() : array_values( array_filter( array_map( 'absint', explode( ',', (string) $assoc_args['products'] ) ) ) );
			if ( ! $products ) {
				\WP_CLI::error( 'No product id in --products: give ids separated by commas, or leave the option out to import every product.' );
			}
		}

		if ( \WP_CLI\Utils\get_flag_value( $assoc_args, 'dry-run', false ) ) {
			$this->dry_run( $products );
			return;
		}

		if ( \WP_CLI\Utils\get_flag_value( $assoc_args, 'undo', false ) ) {
			\WP_CLI::confirm( 'Undo the import? The imported products get back the ProdTabs tabs they had before it, and the shared tabs created by the import go to the trash.', $assoc_args );
			$undone = Import_Yikes::undo();
			\WP_CLI::success( sprintf( 'Import undone: %d products cleaned (%d got their previous tabs back), %d shared tabs moved to the trash, %d kept because other products use them.', $undone['products'], $undone['restored'], $undone['library'], $undone['kept'] ) );
			return;
		}

		// An explicit choice applies even after a first import; the default follows YIKES on the first import only.
		$given = isset( $assoc_args['the-content'] );
		$state = Import_Yikes::start(
			array(
				'products'    => $products,
				'overwrite'   => (bool) \WP_CLI\Utils\get_flag_value( $assoc_args, 'overwrite', false ),
				'the_content' => $given ? Tabs::to_bool( $assoc_args['the-content'] ) : Import_Yikes::used_the_content(),
				'settings'    => $given ? 'always' : 'first',
			)
		);
		$bar = \WP_CLI\Utils\make_progress_bar( 'Import', max( 1, (int) $state['total'] ) );
		$done = 0;
		while ( 'running' === $state['status'] ) {
			$state = Import_Yikes::step( max( 1, (int) ( $assoc_args['batch'] ?? 50 ) ) );
			$bar->tick( $state['done'] - $done );
			$done = $state['done'];
		}
		$bar->finish();

		$c = $state['counts'];
		\WP_CLI::log( sprintf( 'Products imported: %d, skipped: %d, without tabs: %d, errors: %d.', $c['imported'], $c['skipped'], $c['empty'], $c['errors'] ) );
		\WP_CLI::log( sprintf( 'Tabs: %d, using a shared tab: %d, hidden: %d. Shared tabs created: %d.', $c['tabs'], $c['linked'], $c['hidden'], $c['library'] ) );
		foreach ( $state['errors'] as $error ) {
			\WP_CLI::warning( sprintf( '%d: %s', $error[0], $error[1] ) );
		}
		foreach ( $state['notes'] as $note ) {
			\WP_CLI::log( sprintf( 'Note %d %s %s', $note[0], $note[1], $note[2] ) );
		}
		\WP_CLI::success( empty( $state['stopped'] ) ? 'Import finished.' : 'Import stopped from the import screen.' );
	}

	/**
	 * Prints the plan of an import.
	 *
	 * @param int[] $products Products, all when empty.
	 */
	private function dry_run( array $products ): void {
		$saved = Import_Yikes::read_saved();
		$ids   = $products ? array_values( array_intersect( Import_Yikes::product_ids(), $products ) ) : Import_Yikes::product_ids();
		$plans = Import_Yikes::plans( $ids );
		$rows  = array();
		foreach ( $ids as $id ) {
			$plan = $plans[ $id ];
			$tabs = array();
			foreach ( $plan['entries'] as $entry ) {
				if ( 'native' === $entry['type'] ) {
					if ( false === $entry['visible'] ) {
						$tabs[] = '-' . $entry['key'];
					}
					continue;
				}
				if ( 'library' === $entry['type'] ) {
					$label = 'shared:' . ( $saved[ $entry['library_id'] ]['title'] ?? $entry['library_id'] );
				} elseif ( '' === $entry['title'] && '' === trim( $entry['content'] ) ) {
					$label = ( 'absent' === ( $entry['note'] ?? '' ) ? '(not in this language) ' : '(default language text) ' ) . $entry['key'];
				} else {
					$label = $entry['title'] . ( $entry['origin'] ? ' (customized)' : '' );
				}
				$tabs[] = ( $entry['visible'] ? '' : '[hidden] ' ) . $label . ' #' . $entry['anchor'];
			}
			$rows[] = array(
				'id'     => $id,
				'lang'   => Multilingual::post_language( $id ),
				'group'  => $plan['group'],
				'status' => $plan['status'],
				'tabs'   => implode( ' | ', $tabs ),
				'notes'  => implode( ', ', array_map( static fn( $n ) => $n[0], $plan['notes'] ) ),
			);
		}
		\WP_CLI\Utils\format_items( 'table', $rows, array( 'id', 'lang', 'group', 'status', 'tabs', 'notes' ) );
		\WP_CLI::log( sprintf( '%d products, %d saved tabs.', count( $ids ), count( $saved ) ) );
	}
}