<?php

namespace Airalo\Admin;

use WP_Taxonomy;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

class Term {

	const IMAGE_NAME_PREFIX = 'airalo_operator_image_';
	const IMAGE_METADATA_KEY = 'image_id';

	public function fetch_or_create_image_term( $operator ) {
		$taxonomy_name = self::IMAGE_NAME_PREFIX . $operator->id;
		$term_name = $taxonomy_name . '_id';

		$term = get_term_by( 'slug', $term_name, $taxonomy_name );
		if ( $term ) {
			return $term;
		}

		// Taxonomies are stored in memory while terms are stored in db
		// every time sync runs we have to create 1 taxonomy per operator
		// to be able to fetch the term connected to it
		$this->create_image_taxonomy( $operator, $term_name );

		return get_term_by( 'slug', $term_name, $taxonomy_name );
	}

	private function create_image_taxonomy( $operator, string $term_name ) {
		$operator_id = esc_html( $operator->id );

		$labels = [
			'name' => sprintf(
				_x( 'airalo_operator_image_%s', 'taxonomy general name', 'airalo' ),
				$operator_id
			),
			'singular_name' => sprintf(
				_x( 'airalo_operator_image_%s_singular', 'taxonomy singular name', 'airalo' ),
				$operator_id
 			),
		];

		$args = [
			'labels' => $labels,
			'show_ui' => true,
			'show_admin_column' => true,
			'query_var' => true,
			'rewrite' => [ 'slug' => self::IMAGE_NAME_PREFIX . $operator_id ],
		];

		$taxonomy = register_taxonomy( self::IMAGE_NAME_PREFIX . $operator_id, ['post'], $args );

		$this->add_term_to_taxonomy( $taxonomy, $term_name, 'image_id', $operator );

		return $taxonomy;
	}

	private function add_term_to_taxonomy(WP_Taxonomy $taxonomy, $term_name, $term_metadata_key, $operator ) {
		if (! term_exists( $term_name, $taxonomy->name ) ) {
			$term = wp_insert_term( $term_name, $taxonomy->name, ['slug' => $term_name] );
			if ( is_wp_error( $term ) ) {
				// error handling
				return;
			}


			$image_id = media_sideload_image( $operator->image->url, 0, null, 'id' );
			add_term_meta( $term['term_id'], $term_metadata_key, $image_id );
		}
	}
}