<?php
declare( strict_types=1 );

namespace ACA\MLA\Service;

use AC;
use AC\Registerable;
use ACA\MLA\Export\Strategy;
use ACP;

class Export implements Registerable {

	public function register() {
		add_action( 'ac/export/headers', [ $this, 'fix_excel_issue' ], 10, 2 );
		add_filter( 'ac/export/value', [ $this, 'strip_tags_value' ], 10, 3 );
	}

	public function strip_tags_value( $value, AC\Column $column ) {
		if ( $column->get_group() === ColumnGroup::NAME ) {
			$value = strip_tags( (string) $value );
		}

		return $value;
	}

	/**
	 * Error 'SYLK: File format is not valid' in Excel
	 * MS Excel 2003 and 2013 does not allow the first label to start with 'ID'
	 */
	public function fix_excel_issue( array $headers, ACP\Export\Strategy $strategy ) {
		if ( ! $strategy instanceof Strategy ) {
			return $headers;
		}

		foreach ( $headers as $name => $label ) {
			$first = substr( $label, 0, 2 );
			$end = substr( $label, 2 );

			// Rename label 'ID' to 'id'
			if ( 'ID' === $first ) {
				$headers[ $name ] = strtolower( $first ) . $end;
			}
			break;
		}

		return $headers;
	}

}