*
	 * @param array $template_type wp_template or wp_template_part.
	 *
	 * @return string
	 */
	protected function get_templates_directory( $template_type = 'wp_template' ) {
		if ( 'wp_template_part' === $template_type ) {
			return $this->template_parts_directory;
		}
		return $this->templates_directory;
	}

	/**
	 * Checks whether a block template with that name exists in Woo Blocks
	 *
	 * @param string $template_name Template to check.
	 * @param array  $template_type wp_template or wp_template_part.
	 *
	 * @return boolean
	 */
	public function block_template_is_available( $template_name, $template_type = 'wp_template' ) {
		if ( ! $template_name ) {
			return false;
		}
		$directory = $this->get_templates_directory( $template_type ) . '/' . $template_name . '.html';

		return is_readable(
			$directory
		) || $this->get_block_templates( array( $template_name ), $template_type );
	}

	/**
	 * Renders the default block template from Woo Blocks if no theme templates exist.
	 */
	public function render_block_template() {
		if ( is_embed() || ! BlockTemplateUtils::supports_block_templates() ) {
			return;
		}

		if (
			is_singular( 'product' ) &&
			! BlockTemplateUtils::theme_has_template( 'single-product' ) &&
			$this->block_template_is_available( 'single-product' )
		) {
			add_filter( 'woocommerce_has_block_template', '__return_true', 10, 0 );
		} elseif (
			( is_product_taxonomy() && is_tax( 'product_cat' ) ) &&
			! BlockTemplateUtils::theme_has_template( 'taxonomy-product_cat' ) &&
			$this->block_template_is_available( 'taxonomy-product_cat' )
		) {
			add_filter( 'woocommerce_has_block_template', '__return_true', 10, 0 );
		} elseif (
			( is_product_taxonomy() && is_tax( 'product_tag' ) ) &&
			! BlockTemplateUtils::theme_has_template( 'taxonomy-product_tag' ) &&
			$this->block_template_is_available( 'taxonomy-product_tag' )
		) {
			add_filter( 'woocommerce_has_block_template', '__return_true', 10, 0 );
		} elseif (
			( is_post_type_archive( 'product' ) || is_page( wc_get_page_id( 'shop' ) ) ) &&
			! BlockTemplateUtils::theme_has_template( 'archive-product' ) &&
			$this->block_template_is_available( 'archive-product' )
		) {
			add_filter( 'woocommerce_has_block_template', '__return_true', 10, 0 );
		}
	}

	/**
	 * Add template part areas for our blocks.
	 *
	 * @param array $area_definitions An array of supported area objects.
	 */
	public function add_template_part_areas( $area_definitions ) {
		return array_merge(
			$area_definitions,
			array(
				array(
					'area'        => 'mini-cart',
					'label'       => __( 'Mini Cart', 'woocommerce' ),
					'description' => __( 'The Mini Cart template defines a page area that contains the content of the Mini Cart block.', 'woocommerce' ),
					'icon'        => 'sidebar',
					'area_tag'    => 'div',
				),
			)
		);
	}

	/**
	 * Add mini cart content block to new template part for Mini Cart area.
	 *
	 * @param int      $post_id Post ID.
	 * @param \WP_Post $post    Post object.
	 * @param bool     $update  Whether this is an existing post being updated.
	 */
	public function add_mini_cart_content_to_template_part( $post_id, $post, $update ) {
		// We only inject the mini cart content when the template part is created.
		if ( $update ) {
			return;
		}

		// If by somehow, the template part was created with content, bail.
		if ( ! empty( $post->content ) ) {
			return;
		}

		if ( ! function_exists( 'get_block_file_template' ) ) {
			return;
		}

		if ( 'wp_template_part' !== $post->post_type ) {
			return;
		}

		$type_terms = get_the_terms( $post, 'wp_template_part_area' );

		if ( is_wp_error( $type_terms ) || false === $type_terms ) {
			return;
		}

		if ( 'mini-cart' !== $type_terms[0]->name ) {
			return;
		}

		// Remove the filter temporarily for wp_update_post below.
		remove_filter( 'wp_insert_post', array( $this, 'add_mini_cart_content_to_template_part' ), 10, 3 );

		$block_template = null;

		/**
		 * We only use the mini cart content from file.
		 */
		if ( BlockTemplateUtils::theme_has_template_part( 'mini-cart' ) ) {
			$template_id    = sprintf( '%s//mini-cart', wp_get_theme()->get_stylesheet() );
			$block_template = get_block_file_template( $template_id, 'wp_template_part' );
		} else {
			$available_templates = $this->get_block_templates_from_woocommerce( array( 'mini-cart' ), array(), 'wp_template_part' );
			if ( is_array( $available_templates ) && count( $available_templates ) > 0 ) {
				$block_template = BlockTemplateUtils::gutenberg_build_template_result_from_file( $available_templates[0], $available_templates[0]->type );
			}
		}

		if ( is_a( $block_template, 'WP_Block_Template' ) ) {
			$post->post_content = $block_template->content;
		} else { // Just for extra safety.
			$post->post_content = '<!-- wp:woocommerce/mini-cart-contents /-->';
		}

		wp_update_post( $post );

		add_filter( 'wp_insert_post', array( $this, 'add_mini_cart_content_to_template_part' ), 10, 3 );
	}
}