<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

final class EB4TEC_Organizer_Sync {

	public function __construct( private readonly EB4TEC_API_Client $api ) {}

	public function pull_organizer( string $eb_organizer_id ): int|WP_Error {
		if ( empty( $eb_organizer_id ) ) {
			return 0;
		}

		$result = $this->api->get_organizer( $eb_organizer_id );
		if ( is_wp_error( $result ) ) {
			return $result;
		}

		$existing_id = $this->find_tec_organizer( $eb_organizer_id );

		$name = sanitize_text_field( $result['name'] ?? '' );

		$post_args = [
			'post_title'   => $name ?: __( 'Untitled Organizer', 'eb4tec' ),
			'post_content' => wp_kses_post( $result['description']['html'] ?? '' ),
			'post_type'    => 'tribe_organizer',
			'post_status'  => 'publish',
		];

		if ( $existing_id ) {
			$post_args['ID'] = $existing_id;
			$post_id = wp_update_post( $post_args, true );
		} else {
			$post_id = wp_insert_post( $post_args, true );
		}

		if ( is_wp_error( $post_id ) ) {
			return $post_id;
		}

		update_post_meta( $post_id, '_eb4tec_organizer_id', sanitize_text_field( $eb_organizer_id ) );

		if ( ! empty( $result['website'] ) ) {
			update_post_meta( $post_id, '_OrganizerWebsite', esc_url_raw( $result['website'] ) );
		}

		if ( ! empty( $result['twitter'] ) ) {
			update_post_meta( $post_id, '_OrganizerTwitter', sanitize_text_field( $result['twitter'] ) );
		}

		// Sideload logo if not already set.
		if ( ! has_post_thumbnail( $post_id ) && ! empty( $result['logo']['url'] ) ) {
			$this->sideload_image( $result['logo']['url'], $post_id, $name );
		}

		return $post_id;
	}

	public function push_organizer( int $post_id ): string|WP_Error {
		$org_id = (string) get_option( 'eb4tec_org_id', '' );
		if ( empty( $org_id ) ) {
			return new WP_Error( 'eb4tec_no_org', __( 'Eventbrite organization ID not configured.', 'eb4tec' ) );
		}

		$eb_organizer_id = get_post_meta( $post_id, '_eb4tec_organizer_id', true );
		$post            = get_post( $post_id );

		if ( ! $post ) {
			return new WP_Error( 'eb4tec_no_post', __( 'Organizer post not found.', 'eb4tec' ) );
		}

		$website = (string) get_post_meta( $post_id, '_OrganizerWebsite', true );
		$twitter = (string) get_post_meta( $post_id, '_OrganizerTwitter', true );

		$body = [
			'organizer' => [
				'name'    => $post->post_title,
				'website' => $website,
				'twitter' => $twitter,
			],
		];

		if ( $eb_organizer_id ) {
			$result = $this->api->update_organizer( $eb_organizer_id, $body );
		} else {
			$result = $this->api->create_organizer( $org_id, $body );
		}

		if ( is_wp_error( $result ) ) {
			return $result;
		}

		$new_id = $result['id'] ?? '';
		if ( $new_id ) {
			update_post_meta( $post_id, '_eb4tec_organizer_id', sanitize_text_field( $new_id ) );
		}

		return $new_id ?: new WP_Error( 'eb4tec_no_organizer_id', __( 'Eventbrite did not return an organizer ID.', 'eb4tec' ) );
	}

	public function find_tec_organizer( string $eb_organizer_id ): int {
		$query = new WP_Query( [
			'post_type'      => 'tribe_organizer',
			'post_status'    => 'publish',
			'posts_per_page' => 1,
			'fields'         => 'ids',
			'meta_query'     => [ [
				'key'   => '_eb4tec_organizer_id',
				'value' => $eb_organizer_id,
			] ],
		] );

		return $query->posts[0] ?? 0;
	}

	private function sideload_image( string $url, int $post_id, string $title ): void {
		if ( ! function_exists( 'media_sideload_image' ) ) {
			require_once ABSPATH . 'wp-admin/includes/media.php';
			require_once ABSPATH . 'wp-admin/includes/file.php';
			require_once ABSPATH . 'wp-admin/includes/image.php';
		}

		$attachment_id = media_sideload_image( $url, $post_id, $title, 'id' );
		if ( ! is_wp_error( $attachment_id ) ) {
			set_post_thumbnail( $post_id, $attachment_id );
		}
	}
}