<?php
/**
 * Module Library: ProductDescription Module
 *
 * @package Builder\Packages\ModuleLibrary
 * @since ??
 */

namespace ET\Builder\Packages\ModuleLibrary\WooCommerce\ProductDescription;

if ( ! defined( 'ABSPATH' ) ) {
	die( 'Direct access forbidden.' );
}

// phpcs:disable WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase,WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase -- WP use snakeCase in \WP_Block_Parser_Block

use ET\Builder\Framework\DependencyManagement\Interfaces\DependencyInterface;
use ET\Builder\Framework\Utility\HTMLUtility;
use ET\Builder\Framework\Utility\SanitizerUtility;
use ET\Builder\FrontEnd\BlockParser\BlockParserStore;
use ET\Builder\FrontEnd\Module\Style;
use ET\Builder\Packages\Module\Layout\Components\ModuleElements\ModuleElements;
use ET\Builder\Packages\Module\Layout\Components\MultiView\MultiViewScriptData;
use ET\Builder\Packages\Module\Layout\Components\MultiView\MultiViewUtils;
use ET\Builder\Packages\Module\Module;
use ET\Builder\Packages\Module\Options\Css\CssStyle;
use ET\Builder\Packages\Module\Options\Element\ElementClassnames;
use ET\Builder\Packages\Module\Options\Text\TextClassnames;
use ET\Builder\Packages\ModuleLibrary\ModuleRegistration;
use ET\Builder\Packages\StyleLibrary\Utils\StyleDeclarations;
use ET\Builder\Packages\StyleLibrary\Declarations\Declarations;
use ET\Builder\Packages\GlobalData\GlobalData;
use ET\Builder\Packages\WooCommerce\WooCommerceUtils;
use ET\Builder\Packages\WooCommerce\WooCommerceHooks;
use Exception;
use WP_Block_Type_Registry;
use WP_Block;
use ET\Builder\Packages\ModuleUtils\ModuleUtils;

/**
 * WooCommerceProductDescriptionModule class.
 *
 * This class implements the functionality of a WooCommerce product description component
 * in a frontend application. It provides functions for rendering the
 * ProductDescription module, managing REST API endpoints, and other related tasks.
 *
 * This is a dependency class and can be used as a dependency for `DependencyTree`.
 *
 * @since ??
 *
 * @see DependencyInterface
 */
class WooCommerceProductDescriptionModule implements DependencyInterface {

	/**
	 * Render callback for the ProductDescription module.
	 *
	 * This function is responsible for rendering the server-side HTML of the module on the frontend.
	 *
	 * This function is equivalent to the JavaScript function
	 * {@link /docs/builder-api/js/module-library/ ProductDescriptionEdit}
	 * located in `@divi/module-library`.
	 *
	 * @since ??
	 *
	 * @param array          $attrs       Block attributes that were saved by Divi Builder.
	 * @param string         $content     The block's content.
	 * @param WP_Block       $block       Parsed block object that is being rendered.
	 * @param ModuleElements $elements    An instance of the ModuleElements class.
	 *
	 * @return string The HTML rendered output of the ProductDescription module.
	 *
	 * @example
	 * ```php
	 * $attrs = [
	 *   'attrName' => 'value',
	 *   //...
	 * ];
	 * $content = 'The block content.';
	 * $block = new WP_Block();
	 * $elements = new ModuleElements();
	 *
	 * WooCommerceProductDescriptionModule::render_callback( $attrs, $content, $block, $elements );
	 * ```
	 */
	public static function render_callback( array $attrs, string $content, WP_Block $block, ModuleElements $elements ): string {
		$parent = BlockParserStore::get_parent( $block->parsed_block['id'], $block->parsed_block['storeInstance'] );

		$product_id      = $attrs['content']['advanced']['product']['desktop']['value'] ?? WooCommerceUtils::get_default_product();
		$loop_product_id = WooCommerceUtils::get_loop_context_product_id( $attrs, $block );
		if ( $loop_product_id > 0 && 'current' === $product_id ) {
			$product_id = $loop_product_id;
		}
		$description_type = $attrs['content']['advanced']['descriptionType']['desktop']['value'] ?? 'short_description';

		$output = self::get_description(
			$product_id,
			$description_type
		);

		// Render empty string if no output is generated to avoid unwanted vertical space.
		if ( '' === $output ) {
			return '';
		}

		return Module::render(
			[
				// FE only.
				'orderIndex'          => $block->parsed_block['orderIndex'],
				'storeInstance'       => $block->parsed_block['storeInstance'],

				// VB equivalent.
				'attrs'               => $attrs,
				'elements'            => $elements,
				'id'                  => $block->parsed_block['id'],
				'name'                => $block->block_type->name,
				'classnamesFunction'  => [ self::class, 'module_classnames' ],
				'moduleCategory'      => $block->block_type->category,
				'stylesComponent'     => [ self::class, 'module_styles' ],
				'scriptDataComponent' => [ self::class, 'module_script_data' ],
				'parentAttrs'         => $parent->attrs ?? [],
				'parentId'            => $parent->id ?? '',
				'parentName'          => $parent->blockName ?? '',
				'children'            => [
					$elements->style_components(
						[
							'attrName' => 'module',
						]
					),
					HTMLUtility::render(
						[
							'tag'               => 'div',
							'tagEscaped'        => true,
							'attributes'        => [
								'class' => 'et_pb_module_inner',
							],
							'childrenSanitizer' => 'et_core_esc_previously',
							'children'          => $output,
						]
					),
				],
			]
		);
	}

	/**
	 * Generate classnames for the module.
	 *
	 * This function generates classnames for the module based on the provided
	 * arguments. It is used in the `render_callback` function of the ProductDescription module.
	 *
	 * This function is equivalent to the JavaScript constant
	 * {@link /docs/builder-api/js/module-library/module-classnames moduleClassnames}
	 * located in `@divi/module-library`.
	 *
	 * @since ??
	 *
	 * @param array $args {
	 *     An array of arguments.
	 *
	 *     @type object $classnamesInstance Module classnames instance.
	 *     @type array  $attrs              Block attributes data for rendering the module.
	 * }
	 *
	 * @return void
	 *
	 * @example
	 * ```php
	 * $args = [
	 *     'classnamesInstance' => $classnamesInstance,
	 *     'attrs' => $attrs,
	 * ];
	 *
	 * WooCommerceProductDescriptionModule::module_classnames($args);
	 * ```
	 */
	public static function module_classnames( array $args ): void {
		$classnames_instance = $args['classnamesInstance'];
		$attrs               = $args['attrs'];

		$classnames_instance->add(
			TextClassnames::text_options_classnames(
				$attrs['module']['advanced']['text'] ?? [],
				[
					'orientation' => false,
				]
			),
			true
		);

		// Module.
		$classnames_instance->add(
			ElementClassnames::classnames(
				[
					'attrs' => array_merge(
						$attrs['module']['decoration'] ?? [],
						[
							'link' => $attrs['module']['advanced']['link'] ?? [],
						]
					),
				]
			)
		);
	}

	/**
	 * ProductDescription module script data.
	 *
	 * This function assigns variables and sets script data options for the module.
	 *
	 * This function is equivalent to the JavaScript function
	 * {@link /api/js/divi-module-library/functions/generateDefaultAttrs ModuleScriptData}
	 * located in `@divi/module-library`.
	 *
	 * @since ??
	 *
	 * @param array $args {
	 *     Optional. An array of arguments for setting the module script data.
	 *
	 *     @type string         $id            The module ID.
	 *     @type string         $name          The module name.
	 *     @type string         $selector      The module selector.
	 *     @type array          $attrs         The module attributes.
	 *     @type int            $storeInstance The ID of the instance where this block is stored in the `BlockParserStore` class.
	 *     @type ModuleElements $elements      The `ModuleElements` instance.
	 * }
	 *
	 * @return void
	 */
	public static function module_script_data( array $args ): void {
		// Assign variables.
		$id             = $args['id'] ?? '';
		$name           = $args['name'] ?? '';
		$selector       = $args['selector'] ?? '';
		$attrs          = $args['attrs'] ?? [];
		$elements       = $args['elements'];
		$store_instance = $args['storeInstance'] ?? null;

		// Element Script Data Options.
		$elements->script_data(
			[
				'attrName' => 'module',
			]
		);

		// Add multiview support for descriptionType.
		if ( isset( $attrs['content']['advanced']['descriptionType'] ) ) {
			MultiViewScriptData::set(
				[
					'id'            => $id,
					'name'          => $name,
					'storeInstance' => $store_instance,
					'setContent'    => [
						[
							'selector'      => $selector . ' .et_pb_module_inner',
							'data'          => $attrs['content']['advanced']['descriptionType'],
							'valueResolver' => function ( $value ) use ( $attrs ) {
								// Get breakpoints states info for dynamic access.
								$breakpoints_states_info = MultiViewUtils::get_breakpoints_states_info();
								$default_breakpoint      = $breakpoints_states_info->default_breakpoint();
								$default_state           = $breakpoints_states_info->default_state();

								// Get parameters from attributes.
								$product_id = $attrs['content']['advanced']['product'][ $default_breakpoint ][ $default_state ] ?? WooCommerceUtils::get_default_product();

								return self::get_description( $product_id, $value );
							},
							'sanitizer'     => 'et_core_esc_previously',
						],
					],
				]
			);
		}
	}


	/**
	 * ProductDescription Module's style components.
	 *
	 * This function is equivalent to the JavaScript constant
	 * {@link /docs/builder-api/js/module-library/module-styles moduleStyles}
	 * located in `@divi/module-library`.
	 *
	 * @since ??
	 *
	 * @param array $args {
	 *     An array of arguments.
	 *
	 *      @type string $id                Module ID. In VB, the ID of module is UUIDV4. In FE, the ID is order index.
	 *      @type string $name              Module name.
	 *      @type string $attrs             Module attributes.
	 *      @type string $parentAttrs       Parent attrs.
	 *      @type string $orderClass        Selector class name.
	 *      @type string $parentOrderClass  Parent selector class name.
	 *      @type string $wrapperOrderClass Wrapper selector class name.
	 *      @type string $settings          Custom settings.
	 *      @type string $state             Attributes state.
	 *      @type string $mode              Style mode.
	 *      @type ModuleElements $elements  ModuleElements instance.
	 * }
	 *
	 * @return void
	 */
	public static function module_styles( array $args ): void {
		$attrs    = $args['attrs'] ?? [];
		$elements = $args['elements'];
		$settings = $args['settings'] ?? [];

		// Extract the order class.
		$order_class = $args['orderClass'] ?? '';

		Style::add(
			[
				'id'            => $args['id'],
				'name'          => $args['name'],
				'orderIndex'    => $args['orderIndex'],
				'storeInstance' => $args['storeInstance'],
				'styles'        => [
					// Module.
					$elements->style(
						[
							'attrName'   => 'module',
							'styleProps' => [
								'disabledOn'     => [
									'disabledModuleVisibility' => $settings['disabledModuleVisibility'] ?? null,
								],
								'advancedStyles' => [
									[
										'componentName' => 'divi/text',
										'props'         => [
											'selector' => "{$order_class}",
											'attr'     => $attrs['module']['advanced']['text'] ?? [],
										],
									],
									[
										'componentName' => 'divi/common',
										'props'         => [
											'attr' => $attrs['module']['decoration']['border'] ?? [],
											'declarationFunction' => function ( $params ) use ( $attrs ) {
												$overflow_attr = $attrs['module']['decoration']['overflow'] ?? [];
												return Declarations::overflow_for_border_radius_style_declaration( $params, $overflow_attr );
											},
										],
									],
								],
							],
						]
					),
					// Content.
					$elements->style(
						[
							'attrName' => 'content',
						]
					),
					// Module - Only for Custom CSS.
					CssStyle::style(
						[
							'selector'  => $args['orderClass'],
							'attr'      => $attrs['css'] ?? [],
							'cssFields' => self::custom_css(),
						]
					),
				],
			]
		);
	}

	/**
	 * Get the custom CSS fields for the Divi ProductDescription module.
	 *
	 * This function retrieves the custom CSS fields defined for the Divi ProductDescription module.
	 *
	 * This function is equivalent to the JavaScript constant
	 * {@link /api/js/divi-module-library/functions/generateDefaultAttrs cssFields}
	 * located in `@divi/module-library`. Note that this function does not have
	 * a `label` property on each array item, unlike the JS const cssFields.
	 *
	 * @since ??
	 *
	 * @return array An array of custom CSS fields for the Divi ProductDescription module.
	 *
	 * @example
	 * ```php
	 * $customCssFields = CustomCssTrait::custom_css();
	 * // Returns an array of custom CSS fields for the ProductDescription module.
	 * ```
	 */
	public static function custom_css(): array {
		$registered_block = WP_Block_Type_Registry::get_instance()->get_registered( 'divi/woocommerce-product-description' );

		if ( ! $registered_block ) {
			return [];
		}

		$custom_css = $registered_block->customCssFields;

		if ( ! is_array( $custom_css ) ) {
			return [];
		}

		return $custom_css;
	}

	/**
	 * Loads `WooCommerceProductDescriptionModule` and registers frontend render callback and REST API endpoints.
	 *
	 * @since ??
	 *
	 * @return void
	 * @throws Exception Module Registration error.
	 */
	public function load(): void {
		/*
		 * Bail if WooCommerce plugin is not active or the feature-flag `wooProductPageModules` is disabled.
		 */
		if ( ! et_is_woocommerce_plugin_active() ) {
			return;
		}

		// Add a filter for processing dynamic attribute defaults.
		add_filter(
			'divi_module_library_module_default_attributes_divi/woocommerce-product-description',
			[ WooCommerceUtils::class, 'process_dynamic_attr_defaults' ],
			10,
			2
		);

		$module_json_folder_path = dirname( __DIR__, 5 ) . '/visual-builder/packages/module-library/src/components/woocommerce/product-description/';

		// Ensure that all filters and actions applied during module registration are registered before calling `ModuleRegistration::register_module()`.
		// However, for consistency, register all module-specific filters and actions prior to invoking `ModuleRegistration::register_module()`.
		ModuleRegistration::register_module(
			$module_json_folder_path,
			[
				'render_callback' => [ self::class, 'render_callback' ],
			]
		);
	}

	/**
	 * Get the product description for the given product ID and description type.
	 *
	 * @since ??
	 *
	 * @param int|string $product_id       The product ID or 'current' for the current product.
	 * @param string     $description_type The type of description to retrieve ('description' or 'short_description').
	 *
	 * @return string The product description HTML.
	 */
	public static function get_description( $product_id = 'current', $description_type = 'short_description' ): string {
		// If in the theme builder or preview, return placeholder content.
		if ( et_builder_tb_enabled() || is_et_pb_preview() ) {
			$placeholders = WooCommerceUtils::woocommerce_placeholders();
			$description  = 'short_description' === $description_type ?
				$placeholders['short_description'] :
				$placeholders['description'];
			// Apply wpautop to wrap placeholder content in <p> tags, matching regular page behavior.
			$description = wpautop( $description );
			return et_core_intentionally_unescaped( $description, 'html' );
		}

		// Handle 'current' value for product_id.
		if ( 'current' === $product_id ) {
			$product_id = WooCommerceUtils::get_product_id( $product_id );
		}

		if ( ! $product_id ) {
			return '';
		}

		$cache_key          = 'divi_wc_product_desc_' . md5( $product_id . '_' . $description_type );
		$cached_description = get_transient( $cache_key );

		if ( false !== $cached_description ) {
			return et_core_intentionally_unescaped( $cached_description, 'html' );
		}

		// Try to get the product post.
		$post_id = WooCommerceUtils::get_product_id( $product_id );
		$post    = get_post( $post_id );

		if ( ! ( $post instanceof \WP_Post ) ) {
			return '';
		}

		// Determine the product description based on the description type and builder usage.
		if ( 'short_description' === $description_type ) {
			// Always use the post excerpt for short description.
			$description = apply_filters( 'woocommerce_short_description', $post->post_excerpt );

			// Set the transient for short description.
			set_transient( $cache_key, $description, HOUR_IN_SECONDS );

			return et_core_intentionally_unescaped( $description, 'html' );
		}

		// For long description, check if the builder is used.
		if ( ! et_pb_is_pagebuilder_used( $post_id ) ) {
			// Builder not used: use the post content.
			$description = BlockParserStore::render_inner_content( $post->post_content );
		} else {
			// Builder used: use the custom long description meta.
			$description = get_post_meta( $post->ID, WooCommerceHooks::get_long_desc_meta_key(), true );
			$description = apply_filters( 'et_builder_wc_description', $description );
		}

		// Set the transient for long description.
		set_transient( $cache_key, $description, HOUR_IN_SECONDS );

		return et_core_intentionally_unescaped( $description, 'html' );
	}
}
