<?php

declare(strict_types=1);

namespace ACA\MetaBox\Editing\Storage;

use RWMB_Taxonomy_Field;
use WP_Term;

class TermField extends Field
{

    public function get(int $id)
    {
        return $this->single
            ? $this->get_single_term($id)
            : $this->get_multiple_terms($id);
    }

    public function get_single_term($id): ?int
    {
        $term = rwmb_get_value($this->meta_key, ['object_type' => $this->meta_type->get()], $id);

        return $term instanceof WP_Term
            ? $term->term_id
            : null;
    }

    public function get_multiple_terms($id): array
    {
        $terms = rwmb_get_value($this->meta_key, ['object_type' => $this->meta_type->get()], $id);

        $result = [];
        foreach ($terms as $term) {
            if ($term instanceof WP_Term) {
                $result[$term->term_id] = $term->name;
            }
        }

        return $result;
    }

    public function update(int $id, $data): bool
    {
        return $this->single
            ? $this->update_single_term($id, $data)
            : $this->update_multiple_terms($id, $data);
    }

    private function update_single_term($id, $value): bool
    {
        if ($value) {
            $term = get_term($value);
            $value = $term->slug ?? '';
        }

        RWMB_Taxonomy_Field::save($value, null, $id, $this->field_settings);

        return true;
    }

    private function update_multiple_terms($id, $value): bool
    {
        $value = array_map('intval', (array)$value);

        RWMB_Taxonomy_Field::save($value, null, $id, $this->field_settings);

        return true;
    }

}