<?php
declare(strict_types=1);

// Pure local checks. No database, network, files written, or paid services.
require_once dirname(__DIR__) . '/app/Services/RemediationAttemptGrader.php';

use App\Services\RemediationAttemptGrader;

$ids = [11, 12, 13];
$key = [
    ['question_id' => 11, 'option_ids' => [101, 102], 'correct_option_id' => 102],
    ['question_id' => 12, 'option_ids' => [201, 202], 'correct_option_id' => 201],
    ['question_id' => 13, 'option_ids' => [301, 302], 'correct_option_id' => 302],
];
$checks = 0;
function expectGrade(array $ids, array $key, array $answers, ?int $expected): void
{
    global $checks;
    try {
        $actual = RemediationAttemptGrader::grade($ids, $key, $answers);
        if ($expected === null || $actual !== $expected) throw new RuntimeException('Unexpected grade');
    } catch (InvalidArgumentException $e) {
        if ($expected !== null) throw $e;
    }
    $checks++;
}

expectGrade($ids, $key, [102, 201, 302], 3);
expectGrade($ids, $key, [102, 202, 302], 2);
expectGrade($ids, $key, [101, 202, 301], 0);
expectGrade($ids, $key, [102, 201], null);
expectGrade($ids, $key, [102, 201, 999], null);
expectGrade($ids, $key, [102, 102, 302], null);
expectGrade($ids, $key, ['102', 201, 302], null);
expectGrade($ids, array_reverse($key), [102, 201, 302], null);
expectGrade([11, 11, 13], $key, [102, 201, 302], null);
echo "PASS {$checks} remediation grading cases\n";