<?php

declare(strict_types=1);

namespace Tests\Feature;

use Illuminate\Foundation\Testing\WithoutMiddleware;
use Illuminate\Support\Facades\Artisan;
use Illuminate\Support\Facades\Schema;
use PHPUnit\Framework\Attributes\Group;
use Tests\TestCase;

/**
 * Sanity-checks the Form Builder migration chain after S2a.
 *
 * Post-S2a: the legacy registration_* tables are DROPPED by a one-way
 * migration (2026_04_20_100000_drop_remaining_legacy_registration_tables).
 * Rolling back that migration throws by design — restoring the legacy
 * tables from the new form_* structure would be lossy.
 *
 * Tagged "slow" because it exercises the real migrator.
 */
#[Group('slow')]
final class MigrationRollbackTest extends TestCase
{
    use WithoutMiddleware;

    private const FORM_BUILDER_TABLES = [
        'user_profiles',
        'form_schemas',
        'form_schema_sections',
        'form_field_library',
        'form_fields',
        'form_submissions',
        'form_submission_section_statuses',
        'form_submission_delegations',
        'form_values',
        'form_value_options',
        'form_templates',
        'form_schema_webhooks',
        'form_webhook_deliveries',
    ];

    private const LEGACY_TABLES = [
        'registration_form_fields',
        'person_field_values',
        'registration_field_templates',
    ];

    public function test_form_builder_tables_present_after_migrate_fresh(): void
    {
        Artisan::call('migrate:fresh');

        foreach (self::FORM_BUILDER_TABLES as $table) {
            $this->assertTrue(Schema::hasTable($table), "{$table} should exist after migrate:fresh");
        }

        foreach (self::LEGACY_TABLES as $legacy) {
            $this->assertFalse(
                Schema::hasTable($legacy),
                "legacy table {$legacy} should NOT exist after S2a purge"
            );
        }
    }

    public function test_drop_legacy_tables_migration_is_one_way(): void
    {
        Artisan::call('migrate:fresh');

        // Target the S2a drop migration by name so subsequent unrelated
        // migrations don't shift the step offset.
        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage('Legacy registration tables cannot be restored');

        $path = 'database/migrations/2026_04_20_100000_drop_remaining_legacy_registration_tables.php';
        $migration = require base_path($path);
        $migration->down();
    }
}