<?php
declare(strict_types=1);

namespace WPMultiCity\Tests;

use WPMultiCity\FieldGroup;

final class FieldGroupTest extends TestCase
{
    public function test_register_attaches_acf_init_action(): void
    {
        FieldGroup::register();

        self::assertNotFalse(
            has_action('acf/init', [FieldGroup::class, 'do_register']),
            'FieldGroup::register() must hook acf/init'
        );
    }

    public function test_do_register_is_noop_when_acf_missing(): void
    {
        \Brain\Monkey\Functions\when('function_exists')->justReturn(false);
        \Brain\Monkey\Functions\expect('acf_add_local_field_group')->never();

        FieldGroup::do_register();

        self::assertTrue(true, 'do_register must not call acf_add_local_field_group when ACF is missing');
    }

    public function test_do_register_calls_acf_add_local_field_group_with_expected_structure(): void
    {
        \Brain\Monkey\Functions\when('function_exists')->alias(function ($name) {
            return $name === 'acf_add_local_field_group';
        });

        $captured = null;
        \Brain\Monkey\Functions\expect('acf_add_local_field_group')
            ->once()
            ->with(\Mockery::on(function ($group) use (&$captured) {
                $captured = $group;
                return true;
            }));

        FieldGroup::do_register();

        self::assertSame('group_wpmc_shortcode_rows', $captured['key']);
        self::assertSame('WPMultiCity / Shortcode rows', $captured['title']);

        self::assertCount(1, $captured['fields']);
        $repeater = $captured['fields'][0];

        self::assertSame('field_wpmc_list_shortcode', $repeater['key']);
        self::assertSame('list_shortcode', $repeater['name']);
        self::assertSame('repeater', $repeater['type']);
        self::assertCount(2, $repeater['sub_fields']);

        [$town, $text] = $repeater['sub_fields'];
        self::assertSame('town', $town['name']);
        self::assertSame('taxonomy', $town['type']);
        self::assertSame('town', $town['taxonomy']);
        self::assertSame('id', $town['return_format']);
        self::assertSame(0, $town['allow_null']);

        self::assertSame('text', $text['name']);
        self::assertSame('textarea', $text['type']);

        self::assertSame(
            [[['param' => 'post_type', 'operator' => '==', 'value' => 'shortcode-town']]],
            $captured['location']
        );
    }
}