<?php
/**
 * Archive provider class.
 *
 * @package automattic/jetpack-boost
 */

namespace Automattic\Jetpack_Boost\Lib\Critical_CSS\Source_Providers\Providers;

/**
 * Class Archive_Provider
 *
 * @package Automattic\Jetpack_Boost\Modules\Critical_CSS\Providers
 */
class Archive_Provider extends Provider {

	/**
	 * Provider name.
	 *
	 * @var string
	 */
	protected static $name = 'archive';

	// phpcs:ignore Generic.Commenting.DocComment.MissingShort
	/** @inheritdoc */
	public static function get_critical_source_urls( $context_posts = array() ) { // phpcs:ignore Generic.Commenting.DocComment.MissingShort
		$links              = array();
		$context_post_types = wp_list_pluck( $context_posts, 'post_type' );

		$post_types = self::get_post_types();
		if ( ! empty( $context_post_types ) ) {
			$post_types = array_intersect( $post_types, $context_post_types );
		}
		foreach ( $post_types as $post_type ) {
			$link = get_post_type_archive_link( $post_type );

			if ( ! empty( $link ) ) {
				$links[ $post_type ][] = $link;
			}
		}

		return $links;
	}

	// phpcs:ignore Generic.Commenting.DocComment.MissingShort
	/** @inheritdoc */
	public static function get_current_storage_keys() {
		if ( ! is_archive() ) {
			return array();
		}

		// For example: "archive_post".
		return array( self::$name . '_' . get_post_type() );
	}

	// phpcs:ignore Generic.Commenting.DocComment.MissingShort
	/** @inheritdoc */
	public static function get_keys() { // phpcs:ignore Generic.Commenting.DocComment.MissingShort
		return self::get_post_types();
	}

	// phpcs:ignore Generic.Commenting.DocComment.MissingShort
	/** @inheritdoc */
	public static function get_edit_url( $_provider_key ) { // phpcs:ignore Generic.Commenting.DocComment.MissingShort
		return null;
	}

	// phpcs:ignore
	/** @inheritdoc */
	public static function describe_key( $provider_key ) { // phpcs:ignore Generic.Commenting.DocComment.MissingShort
		$post_type = substr( $provider_key, strlen( static::$name ) + 1 );

		switch ( $post_type ) {
			case 'post':
				return __( 'Post archive view', 'jetpack-boost' );

			case 'page':
				return __( 'Page archive view', 'jetpack-boost' );

			default:
				return __( 'Archive page for custom post type', 'jetpack-boost' );
		}
	}

	/**
	 * Get post types that need Critical CSS.
	 *
	 * @return mixed|void
	 */
	public static function get_post_types() {
		$post_types = get_post_types(
			array(
				'public'      => true,
				'has_archive' => true,
			),
			'objects'
		);
		unset( $post_types['attachment'] );

		$post_types = array_filter( $post_types, 'is_post_type_viewable' );

		$provider_post_types = array();
		// Generate a name => name array for backwards compatibility.
		foreach ( $post_types as $post_type ) {
			$provider_post_types[ $post_type->name ] = $post_type->name;
		}

		/**
		 * Filters the post types used for Critical CSS
		 *
		 * @param array $post_types The array of post types to be used
		 *
		 * @since   1.0.0
		 */
		return apply_filters(
			'jetpack_boost_critical_css_post_types_archives',
			apply_filters_deprecated(
				'jetpack_boost_critical_css_post_types',
				array(
					$provider_post_types,
				),
				'3.4.0',
				'jetpack_boost_critical_css_post_types_archives'
			),
			$post_types
		);
	}

	// phpcs:ignore Generic.Commenting.DocComment.MissingShort
	/** @inheritdoc */
	public static function get_success_ratio() { // phpcs:ignore Generic.Commenting.DocComment.MissingShort
		return 1;
	}
}