<?php
namespace Automattic\WooCommerce\Blocks\BlockTypes;

use Automattic\WooCommerce\Blocks\Package;
use Automattic\WooCommerce\Blocks\StoreApi\Utilities\CartController;
use Automattic\WooCommerce\Blocks\Payments\PaymentMethodRegistry;
use Automattic\WooCommerce\Blocks\Assets\AssetDataRegistry;
use Automattic\WooCommerce\Blocks\Assets\Api as AssetApi;
use Automattic\WooCommerce\Blocks\Integrations\IntegrationRegistry;
use Automattic\WooCommerce\Blocks\Utils\StyleAttributesUtils;
use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;

/**
 * Mini Cart class.
 *
 * @internal
 */
class MiniCart extends AbstractBlock {
	/**
	 * Block name.
	 *
	 * @var string
	 */
	protected $block_name = 'mini-cart';

	/**
	 * Array of scripts that will be lazy loaded when interacting with the block.
	 *
	 * @var string[]
	 */
	protected $scripts_to_lazy_load = array();

	/**
	 *  Inc Tax label.
	 *
	 * @var string
	 */
	protected $tax_label = '';

	/**
	 *  Visibility of price including tax.
	 *
	 * @var string
	 */
	protected $display_cart_prices_including_tax = false;

	/**
	 * Constructor.
	 *
	 * @param AssetApi            $asset_api Instance of the asset API.
	 * @param AssetDataRegistry   $asset_data_registry Instance of the asset data registry.
	 * @param IntegrationRegistry $integration_registry Instance of the integration registry.
	 */
	public function __construct( AssetApi $asset_api, AssetDataRegistry $asset_data_registry, IntegrationRegistry $integration_registry ) {
		parent::__construct( $asset_api, $asset_data_registry, $integration_registry, $this->block_name );

	}

	/**
	 * Get the editor script handle for this block type.
	 *
	 * @param string $key Data to get, or default to everything.
	 * @return array|string;
	 */
	protected function get_block_type_editor_script( $key = null ) {
		$script = [
			'handle'       => 'wc-' . $this->block_name . '-block',
			'path'         => $this->asset_api->get_block_asset_build_path( $this->block_name ),
			'dependencies' => [ 'wc-blocks' ],
		];
		return $key ? $script[ $key ] : $script;
	}

	/**
	 * Get the frontend script handle for this block type.
	 *
	 * @see $this->register_block_type()
	 * @param string $key Data to get, or default to everything.
	 * @return array|string
	 */
	protected function get_block_type_script( $key = null ) {
		if ( is_cart() || is_checkout() ) {
			return;
		}

		$script = [
			'handle'       => 'wc-' . $this->block_name . '-block-frontend',
			'path'         => $this->asset_api->get_block_asset_build_path( $this->block_name . '-frontend' ),
			'dependencies' => [],
		];
		return $key ? $script[ $key ] : $script;
	}

	/**
	 * Extra data passed through from server to client for block.
	 *
	 * @param array $attributes  Any attributes that currently are available from the block.
	 *                           Note, this will be empty in the editor context when the block is
	 *                           not in the post content on editor load.
	 */
	protected function enqueue_data( array $attributes = [] ) {
		if ( is_cart() || is_checkout() ) {
			return;
		}

		parent::enqueue_data( $attributes );

		// Hydrate the following data depending on admin or frontend context.
		if ( ! is_admin() && ! WC()->is_rest_api_request() ) {
			$this->hydrate_from_api();

			$label_info = $this->get_tax_label();

			$this->tax_label                         = $label_info['tax_label'];
			$this->display_cart_prices_including_tax = $label_info['display_cart_prices_including_tax'];

			$this->asset_data_registry->add(
				'taxLabel',
				$this->tax_label,
				''
			);

			$this->asset_data_registry->add(
				'displayCartPricesIncludingTax',
				$this->display_cart_prices_including_tax,
				false
			);
		}

		$script_data = $this->asset_api->get_script_data( 'build/mini-cart-component-frontend.js' );

		$num_dependencies = count( $script_data['dependencies'] );
		$wp_scripts       = wp_scripts();

		for ( $i = 0; $i < $num_dependencies; $i++ ) {
			$dependency = $script_data['dependencies'][ $i ];

			foreach ( $wp_scripts->registered as $script ) {
				if ( $script->handle === $dependency ) {
					$this->append_script_and_deps_src( $script );
					break;
				}
			}
		}

		$payment_method_registry = Package::container()->get( PaymentMethodRegistry::class );
		$payment_methods         = $payment_method_registry->get_all_active_payment_method_script_dependencies();

		foreach ( $payment_methods as $payment_method ) {
			$payment_method_script = $this->get_script_from_handle( $payment_method );

			if ( ! is_null( $payment_method_script ) ) {
				$this->append_script_and_deps_src( $payment_method_script );
			}
		}

		$this->scripts_to_lazy_load['wc-block-mini-cart-component-frontend'] = array(
			'src'     => $script_data['src'],
			'version' => $script_data['version'],
		);

		$this->asset_data_registry->add(
			'mini_cart_block_frontend_dependencies',
			$this->scripts_to_lazy_load,
			true
		);

		$this->asset_data_registry->add(
			'displayCartPricesIncludingTax',
			$this->display_cart_prices_including_tax,
			true
		);

		$template_part_edit_uri = '';

		if (
			current_user_can( 'edit_theme_options' ) &&
			function_exists( 'wp_is_block_theme' ) &&
			wp_is_block_theme()
		) {
			$theme_slug      = BlockTemplateUtils::theme_has_template_part( 'mini-cart' ) ? wp_get_theme()->get_stylesheet() : 'woocommerce';
			$site_editor_uri = admin_url( 'site-editor.php' );

			if ( version_compare( get_bloginfo( 'version' ), '5.9', '<' ) ) {
				$site_editor_uri = add_query_arg(
					array( 'page' => 'gutenberg-edit-site' ),
					admin_url( 'themes.php' )
				);
			}

			$template_part_edit_uri = add_query_arg(
				array(
					'postId'   => sprintf( '%s//%s', $theme_slug, 'mini-cart' ),
					'postType' => 'wp_template_part',
				),
				$site_editor_uri
			);
		}

		$this->asset_data_registry->add(
			'templatePartEditUri',
			$template_part_edit_uri,
			''
		);

		/**
		 * Fires after cart block data is registered.
		 */
		do_action( 'woocommerce_blocks_cart_enqueue_data' );
	}

	/**
	 * Hydrate the cart block with data from the API.
	 */
	protected function hydrate_from_api() {
		$this->asset_data_registry->hydrate_api_request( '/wc/store/cart' );
	}

	/**
	 * Returns the script data given its handle.
	 *
	 * @param string $handle Handle of the script.
	 *
	 * @return \_WP_Dependency|null Object containing the script data if found, or null.
	 */
	protected function get_script_from_handle( $handle ) {
		$wp_scripts = wp_scripts();
		foreach ( $wp_scripts->registered as $script ) {
			if ( $script->handle === $handle ) {
				return $script;
			}
		}
		return null;
	}

	/**
	 * Recursively appends a scripts and its dependencies into the scripts_to_lazy_load array.
	 *
	 * @param \_WP_Dependency $script Object containing script data.
	 */
	protected function append_script_and_deps_src( $script ) {
		$wp_scripts = wp_scripts();

		// This script and its dependencies have already been appended.
		if ( ! $script || array_key_exists( $script->handle, $this->scripts_to_lazy_load ) ) {
			return;
		}

		if ( count( $script->deps ) ) {
			foreach ( $script->deps as $dep ) {
				if ( ! array_key_exists( $dep, $this->scripts_to_lazy_load ) ) {
					$dep_script = $this->get_script_from_handle( $dep );

					if ( ! is_null( $dep_script ) ) {
						$this->append_script_and_deps_src( $dep_script );
					}
				}
			}
		}
		if ( ! $script->src ) {
			return;
		}
		$this->scripts_to_lazy_load[ $script->handle ] = array(
			'src'          => $script->src,
			'version'      => $script->ver,
			'before'       => $wp_scripts->print_inline_script( $script->handle, 'before', false ),
			'after'        => $wp_scripts->print_inline_script( $script->handle, 'after', false ),
			'translations' => $wp_scripts->print_translations( $script->handle, false ),
		);
	}

	/**
	 * Returns the markup for render the tax label.
	 *
	 * @return string
	 */
	protected function get_include_tax_label_markup() {
		$cart_controller     = $this->get_cart_controller();
		$cart                = $cart_controller->get_cart_instance();
		$cart_contents_total = $cart->get_subtotal();

		return ( ! empty( $this->tax_label ) && 0 !== $cart_contents_total ) ? ( "<small class='wc-block-mini-cart__tax-label'>" . esc_html( $this->tax_label ) . '</small>' ) : '';
	}

	/**
	 * Append frontend scripts when rendering the Mini Cart block.
	 *
	 * @param array  $attributes Block attributes.
	 * @param string $content    Block content.
	 *
	 * @return string Rendered block type output.
	 */
	protected function render( $attributes, $content ) {
		return $content . $this->get_markup( $attributes );
	}

	/**
	 * Render the markup for the Mini Cart block.
	 *
	 * @param array $attributes Block attributes.
	 *
	 * @return string The HTML markup.
	 */
	protected function get_markup( $attributes ) {
		if ( is_admin() || WC()->is_rest_api_request() ) {
			// In the editor we will display the placeholder, so no need to load
			// real cart data and to print the markup.
			return '';
		}

		$cart_controller     = $this->get_cart_controller();
		$cart                = $cart_controller->get_cart_instance();
		$cart_contents_count = $cart->get_cart_contents_count();
		$cart_contents       = $cart->get_cart();
		$cart_contents_total = $cart->get_subtotal();

		if ( $cart->display_prices_including_tax() ) {
			$cart_contents_total += $cart->get_subtotal_tax();
		}

		$wrapper_classes = 'wc-block-mini-cart  wp-block-woocommerce-mini-cart';
		$classes_styles  = StyleAttributesUtils::get_classes_and_styles_by_attributes( $attributes, array( 'text_color', 'background_color' ) );
		$classes         = $classes_styles['classes'];
		$style           = $classes_styles['styles'];

		if ( ! empty( $attributes['align'] ) ) {
			$wrapper_classes .= ' align-' . $attributes['align'];
		}

		if ( ! isset( $attributes['transparentButton'] ) || $attributes['transparentButton'] ) {
			$wrapper_classes .= ' is-transparent';
		}

		$aria_label = sprintf(
		/* translators: %1$d is the number of products in the cart. %2$s is the cart total */
			_n(
				'%1$d item in cart, total price of %2$s',
				'%1$d items in cart, total price of %2$s',
				$cart_contents_count,
				'woocommerce'
			),
			$cart_contents_count,
			wp_strip_all_tags( wc_price( $cart_contents_total ) )
		);
		$title = sprintf(
		/* translators: %d is the count of items in the cart. */
			_n(
				'Your cart (%d item)',
				'Your cart (%d items)',
				$cart_contents_count,
				'woocommerce'
			),
			$cart_contents_count
		);
		$icon        = '<svg class="wc-block-mini-cart__icon" width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
			<g clip-path="url(#clip0)">
				<path d="M7.50008 18.3332C7.96032 18.3332 8.33341 17.9601 8.33341 17.4998C8.33341 17.0396 7.96032 16.6665 7.50008 16.6665C7.03984 16.6665 6.66675 17.0396 6.66675 17.4998C6.66675 17.9601 7.03984 18.3332 7.50008 18.3332Z" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
				<path d="M16.6666 18.3332C17.1268 18.3332 17.4999 17.9601 17.4999 17.4998C17.4999 17.0396 17.1268 16.6665 16.6666 16.6665C16.2063 16.6665 15.8333 17.0396 15.8333 17.4998C15.8333 17.9601 16.2063 18.3332 16.6666 18.3332Z" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
				<path d="M0.833252 0.833496H4.16658L6.39992 11.9918C6.47612 12.3755 6.68484 12.7201 6.98954 12.9654C7.29424 13.2107 7.6755 13.341 8.06658 13.3335H16.1666C16.5577 13.341 16.9389 13.2107 17.2436 12.9654C17.5483 12.7201 17.757 12.3755 17.8333 11.9918L19.1666 5.00016H4.99992" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
			</g>
			<defs>
				<clipPath id="clip0">
					<rect width="20" height="20" fill="white"/>
				</clipPath>
			</defs>
		</svg>';
		$button_html = '<span class="wc-block-mini-cart__amount">' . esc_html( wp_strip_all_tags( wc_price( $cart_contents_total ) ) ) . '</span>
		' . $this->get_include_tax_label_markup() . '
		<span class="wc-block-mini-cart__quantity-badge">
			' . $icon . '
			<span class="wc-block-mini-cart__badge ' . $classes . '" style="' . $style . '">' . $cart_contents_count . '</span>
		</span>';

		if ( is_cart() || is_checkout() ) {
			return '<div class="' . $wrapper_classes . '">
				<button class="wc-block-mini-cart__button ' . $classes . '" aria-label="' . esc_attr( $aria_label ) . '" style="' . $style . '" disabled>' . $button_html . '</button>
			</div>';
		}

		$template_part_contents = '';
		if ( function_exists( 'gutenberg_get_block_template' ) ) {
			$template_part = gutenberg_get_block_template( get_stylesheet() . '//mini-cart', 'wp_template_part' );
			if ( $template_part && ! empty( $template_part->content ) ) {
				$template_part_contents = do_blocks( $template_part->content );
			}
		}
		if ( '' === $template_part_contents ) {
			$template_part_contents = do_blocks(
				// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
				file_get_contents( Package::get_path() . 'templates/block-template-parts/mini-cart.html' )
			);
		}

		return '<div class="' . $wrapper_classes . '">
			<button class="wc-block-mini-cart__button ' . $classes . '" aria-label="' . esc_attr( $aria_label ) . '" style="' . $style . '">' . $button_html . '</button>
			<div class="wc-block-mini-cart__drawer is-loading is-mobile wc-block-components-drawer__screen-overlay wc-block-components-drawer__screen-overlay--is-hidden" aria-hidden="true">
				<div class="components-modal__frame wc-block-components-drawer">
					<div class="components-modal__content">
						<div class="components-modal__header">
							<div class="components-modal__header-heading-container"></div>
						</div>
						<div class="wc-block-mini-cart__template-part">'
						. wp_kses_post( $template_part_contents ) .
						'</div>
					</div>
				</div>
			</div>
		</div>';
	}

	/**
	 * Return an instace of the CartController class.
	 *
	 * @return CartController CartController class instance.
	 */
	protected function get_cart_controller() {
		return new CartController();
	}

	/**
	 * Get array with data for handle the tax label.
	 * the entire logic of this function is was taken from:
	 * https://github.com/woocommerce/woocommerce/blob/e730f7463c25b50258e97bf56e31e9d7d3bc7ae7/includes/class-wc-cart.php#L1582
	 *
	 * @return array;
	 */
	protected function get_tax_label() {
		$cart = WC()->cart;

		if ( $cart->display_prices_including_tax() ) {
			if ( ! wc_prices_include_tax() ) {
				$tax_label                         = WC()->countries->inc_tax_or_vat();
				$display_cart_prices_including_tax = true;
				return array(
					'tax_label'                         => $tax_label,
					'display_cart_prices_including_tax' => $display_cart_prices_including_tax,
				);
			}
			return array(
				'label_including_tax'               => '',
				'display_cart_prices_including_tax' => true,
			);
		}

		if ( wc_prices_include_tax() ) {
			$tax_label = WC()->countries->ex_tax_or_vat();
			return array(
				'tax_label'                         => $tax_label,
				'display_cart_prices_including_tax' => false,
			);
		};

		return array(
			'tax_label'                         => '',
			'display_cart_prices_including_tax' => false,
		);
	}
}
