ap_select_answer_btn_html( mixed $_post = null )

function ap_select_answer_btn_html( $_post = null ) {
	if ( ! ap_user_can_select_answer( $_post ) ) {
		return;
	}

	$_post = ap_get_post( $_post );
	$nonce = wp_create_nonce( 'select-answer-' . $_post->ID );

	$q = wp_json_encode(
		array(
			'answer_id' => $_post->ID,
			'__nonce'   => $nonce,
		)
	);

	$active = false;

	$title = __( 'Select this answer as best', 'anspress-question-answer' );
	$label = __( 'Select', 'anspress-question-answer' );

	$have_best = ap_have_answer_selected( $_post->post_parent );
	$selected  = ap_is_selected( $_post );
	$hide      = false;

	if ( $have_best && $selected ) {
		$title  = __( 'Unselect this answer', 'anspress-question-answer' );
		$label  = __( 'Unselect', 'anspress-question-answer' );
		$active = true;
	}

	if ( $have_best && ! $selected ) {
		$hide = true;
	}

	return '<a href="#" class="ap-btn-select ap-btn ' . ( $active ? ' active' : '' ) . ( $hide ? ' hide' : '' ) . '" ap="select_answer" apquery="' . esc_js( $q ) . '" title="' . esc_attr( $title ) . '">' . esc_html( $label ) . '</a>';
}