Astra_Fonts::google_fonts_url( array $fonts, array $subsets = array() )

	public static function google_fonts_url( $fonts, $subsets = array() ) {

		/* URL */
		$base_url  = 'https://fonts.googleapis.com/css';
		$font_args = array();
		$family    = array();

		// This is deprecated filter hook.
		$fonts = apply_filters( 'astra_google_fonts', $fonts );

		$fonts = apply_filters( 'astra_google_fonts_selected', $fonts );

		/* Format Each Font Family in Array */
		foreach ( $fonts as $font_name => $font_weight ) {
			$font_name = str_replace( ' ', '+', $font_name );
			if ( ! empty( $font_weight ) ) {
				if ( is_array( $font_weight ) ) {
					$font_weight = implode( ',', $font_weight );
				}
				$font_family = explode( ',', $font_name );
				$font_family = str_replace( "'", '', astra_get_prop( $font_family, 0 ) );
				$family[]    = trim( $font_family . ':' . rawurlencode( trim( $font_weight ) ) );
			} else {
				$family[] = trim( $font_name );
			}
		}

		/* Only return URL if font family defined. */
		if ( ! empty( $family ) ) {

			/* Make Font Family a String */
			$family = implode( '|', $family );

			/* Add font family in args */
			$font_args['family'] = $family;

			/* Add font subsets in args */
			if ( ! empty( $subsets ) ) {

				/* format subsets to string */
				if ( is_array( $subsets ) ) {
					$subsets = implode( ',', $subsets );
				}

				$font_args['subset'] = rawurlencode( trim( $subsets ) );
			}

			$font_args['display'] = astra_get_fonts_display_property();

			return add_query_arg( $font_args, $base_url );
		}

		return '';
	}