Amp_Template_Override::override_template_path( string $path, string $relative_path )

	public function override_template_path( $path, $relative_path ) {
		/*
		 * If we're not using AMP classic and are using paired/native instead,
		 * then we should only override `components/*` templates. All the other
		 * templates (i.e. single product, archive etc) will be rendered from
		 * the main WP theme template and thus we should not override that.
		 */
		if ( ! $this->is_classic() && ! strpos( $path, 'components' ) ) {
			return $path;
		}

		$amp_path          = '';
		$amp_relative_path = trailingslashit( $this->amp_directory ) . $relative_path;

		/**
		 * This filter is documented in src/BigCommerce/Templates/Controller.php
		 */
		$theme_dir = apply_filters( 'bigcommerce/template/directory/theme', '', $amp_relative_path );

		/**
		 * This filter is documented in src/BigCommerce/Templates/Controller.php
		 */
		$plugin_dir = apply_filters( 'bigcommerce/template/directory/plugin', '', $amp_relative_path );
		if ( ! empty( $theme_dir ) ) {
			$amp_path = locate_template( trailingslashit( $theme_dir ) . $amp_relative_path );
		}

		// no template in the theme, so fall back to the plugin default
		if ( empty( $amp_path ) && ! empty( $plugin_dir ) ) {
			$amp_path = trailingslashit( $plugin_dir ) . $amp_relative_path;
		}

		// check that we actually have an AMP override for this template
		if ( ! empty( $amp_path ) && file_exists( $amp_path ) ) {
			$path = $amp_path;
		}

		return $path;
	}