<?php

declare(strict_types=1);

namespace Tests\Feature\FormBuilder\Schema;

use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;
use Tests\TestCase;

/**
 * Migration rehearsal for WS-6 v1.3-delta D1:
 *   - 2026_05_08_000001_add_failure_response_code_to_form_submissions
 *
 * Verifies the column + index land per RFC-WS-6 §Q3 v1.3 addition 2 and
 * ARCH-BINDINGS §7.1 v1.2.
 */
final class Ws6V13DeltaD1MigrationTest extends TestCase
{
    use RefreshDatabase;

    public function test_form_submissions_has_failure_response_code_column(): void
    {
        $this->assertTrue(Schema::hasColumn('form_submissions', 'failure_response_code'));
    }

    public function test_failure_response_code_is_nullable_string_40(): void
    {
        $row = DB::selectOne(
            'SELECT DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, IS_NULLABLE, COLUMN_DEFAULT
             FROM information_schema.COLUMNS
             WHERE TABLE_SCHEMA = DATABASE()
               AND TABLE_NAME = ?
               AND COLUMN_NAME = ?',
            ['form_submissions', 'failure_response_code'],
        );

        $this->assertNotNull($row, 'failure_response_code column missing');
        $this->assertSame('varchar', strtolower((string) $row->DATA_TYPE));
        $this->assertSame(40, (int) $row->CHARACTER_MAXIMUM_LENGTH);
        $this->assertSame('YES', $row->IS_NULLABLE);
        $this->assertNull($row->COLUMN_DEFAULT);
    }

    public function test_failure_response_code_index_present(): void
    {
        $row = DB::selectOne(
            'SELECT INDEX_NAME
             FROM information_schema.STATISTICS
             WHERE TABLE_SCHEMA = DATABASE()
               AND TABLE_NAME = ?
               AND INDEX_NAME = ?',
            ['form_submissions', 'fs_failure_response_code_idx'],
        );

        $this->assertNotNull($row, 'fs_failure_response_code_idx missing');
    }
}