<?php
/**
 * Handles secure updates.
 */

defined( 'ABSPATH' ) || exit;

class Adbear_Alt_Text_Generator_Updater {
	public function update_single( $attachment_id, $alt, $title ) {
		$attachment_id = absint( $attachment_id );
		$post          = get_post( $attachment_id );
		if ( ! $post || 'attachment' !== $post->post_type ) {
			return false;
		}

		$alt   = sanitize_text_field( $alt );
		$title = sanitize_text_field( $title );

		update_post_meta( $attachment_id, '_wp_attachment_image_alt', $alt );
		if ( '' !== $title ) {
			wp_update_post( array( 'ID' => $attachment_id, 'post_title' => $title ) );
		}

		$results = (array) get_option( Adbear_Alt_Text_Generator_Helpers::get_scan_option_key(), array() );
		if ( isset( $results[ $attachment_id ] ) ) {
			$results[ $attachment_id ]['current_alt']   = $alt;
			$results[ $attachment_id ]['current_title'] = $title;
			$results[ $attachment_id ]['missing_alt']   = '' === trim( $alt ) ? 1 : 0;
			$results[ $attachment_id ]['missing_title'] = '' === trim( $title ) ? 1 : 0;
			if ( 0 === (int) $results[ $attachment_id ]['missing_alt'] && 0 === (int) $results[ $attachment_id ]['missing_title'] ) {
				unset( $results[ $attachment_id ] );
			}
			update_option( Adbear_Alt_Text_Generator_Helpers::get_scan_option_key(), $results, false );
		}

		$report = (array) get_option( Adbear_Alt_Text_Generator_Helpers::get_scan_report_option_key(), array() );
		if ( isset( $report[ $attachment_id ] ) ) {
			$report[ $attachment_id ]['current_alt']   = $alt;
			$report[ $attachment_id ]['current_title'] = $title;
			$report[ $attachment_id ]['missing_alt']   = '' === trim( $alt ) ? 1 : 0;
			$report[ $attachment_id ]['missing_title'] = '' === trim( $title ) ? 1 : 0;
			update_option( Adbear_Alt_Text_Generator_Helpers::get_scan_report_option_key(), $report, false );
		}

		return true;
	}

	public function update_bulk( $items ) {
		$updated = 0;
		foreach ( $items as $item ) {
			$attachment_id = isset( $item['attachment_id'] ) ? absint( $item['attachment_id'] ) : 0;
			$alt_text      = isset( $item['alt_text'] ) ? sanitize_text_field( $item['alt_text'] ) : '';
			$title_text    = isset( $item['title_text'] ) ? sanitize_text_field( $item['title_text'] ) : '';
			if ( $attachment_id > 0 && $this->update_single( $attachment_id, $alt_text, $title_text ) ) {
				++$updated;
			}
		}
		return $updated;
	}
}