<?php

declare(strict_types=1);

/** Deterministic synthetic citation windows, no raw recording input or model invocation. */
require dirname(__DIR__) . '/vendor/autoload.php';
use app\common\service\followupaudio\FollowupAudioTranscriptPrompt as Prompt;
use app\common\service\followupaudio\FollowupAudioPolicy as Policy;
if (($override = getenv('FOLLOWUP_AUDIO_PROMPT_OVERRIDE')) !== false && $override !== '') { require $override; }
$checks = [];
$check = static function (string $id, bool $ok) use (&$checks): void { $checks[$id] = $ok; };
if (!method_exists(Prompt::class, 'citations')) {
    $check('public_citations_api_exists', false);
} else {
    $check('policy_constant', Prompt::CITATION_POLICY === 'contiguous-240-overlap-40-v1');
    foreach ([1, 39, 40, 199, 200, 239, 240, 241, 440, 441, 1001] as $length) {
        $text = '';
        for ($i = 0; $i < $length; $i++) { $text .= mb_chr(0x4e00 + $i); }
        $text = mb_substr($text, 0, max(0, $length - 1)) . '🐾';
        $segments = [['id' => 's_a', 'start_ms' => 0, 'end_ms' => 120000, 'text' => $text]];
        $citations = Prompt::citations($segments);
        $seen = [];
        $covered = [];
        $exact = true;
        foreach ($citations as $index => $citation) {
            $start = $index * 200;
            $expected = mb_substr($text, $start, 240);
            $exact = $exact && array_keys($citation) === ['id', 'segment_id', 'text']
                && $citation['segment_id'] === 's_a' && $citation['text'] === $expected
                && mb_strlen($citation['text']) <= 240 && str_contains($text, $citation['text'])
                && preg_match('/^c_[a-f0-9]{32}$/D', $citation['id']) && !isset($seen[$citation['id']]);
            $seen[$citation['id']] = true;
            for ($j = $start; $j < $start + mb_strlen($citation['text']); $j++) { $covered[$j] = true; }
        }
        $check('exact_bounded_unique_windows_' . $length, $exact);
        $check('complete_source_coverage_' . $length, count($covered) === $length);
        $check('deterministic_' . $length, $citations === Prompt::citations($segments));
    }
    $text = "  开头空格\n" . str_repeat('合成来源文字不可改写。', 70) . "\n末尾空格  ";
    $segments = [
        ['id' => 'one', 'text' => $text, 'start_ms' => 0, 'end_ms' => 60000],
        ['id' => 'two', 'text' => $text, 'start_ms' => 60000, 'end_ms' => 120000],
    ];
    $citations = Prompt::citations($segments);
    $check('identical_text_different_segment_unique_ids', count(array_unique(array_column($citations, 'id'))) === count($citations));
    $check('whitespace_not_trimmed', str_starts_with($citations[0]['text'], "  开头空格\n") && str_ends_with(end($citations)['text'], "\n末尾空格  "));
    $changed = $segments; $changed[0]['text'] .= '变更';
    $check('source_change_invalidates_old_id', Prompt::citations($changed)[0]['id'] !== $citations[0]['id']);
    $changed = $segments; $changed[0]['end_ms'] = 61000;
    $check('boundary_change_invalidates_old_id', Prompt::citations($changed)[0]['id'] !== $citations[0]['id']);
    $check('silence_has_no_invented_citation', Prompt::citations([array_replace($segments[0], ['text' => ''])]) === []);
    $withSilence = $segments;
    array_unshift($withSilence, ['id' => 'silence', 'text' => '', 'start_ms' => 0, 'end_ms' => 100]);
    $check('silence_does_not_change_speech_ids', Prompt::citations($withSilence) === $citations);
    $boundary = [];
    for ($i = 0; $i < 1000; $i++) { $boundary[] = ['id' => 's_' . $i, 'start_ms' => $i * 1000, 'end_ms' => ($i + 1) * 1000, 'text' => '合成']; }
    $check('exact_maximum_segments_allowed', count(Prompt::citations($boundary)) === 1000);
    $normalized = Policy::normalizeExtraction(['summary' => '', 'items' => [], 'transcript' => implode("\n", array_column($boundary, 'text')),
        'transcript_segments' => $boundary], '2026-01-01 09:00:00');
    $check('policy_exact_maximum_segments_allowed', count($normalized['transcript_segments']) === 1000);
    $boundary[] = ['id' => 's_1000', 'start_ms' => 1000000, 'end_ms' => 1001000, 'text' => '合成'];
    $rejected = false;
    try { Prompt::citations($boundary); } catch (DomainException $error) { $rejected = true; }
    $check('maximum_plus_one_segments_rejected', $rejected);
    $rejected = false;
    try {
        Policy::normalizeExtraction(['summary' => '', 'items' => [], 'transcript' => implode("\n", array_column($boundary, 'text')),
            'transcript_segments' => $boundary], '2026-01-01 09:00:00');
    } catch (DomainException $error) { $rejected = true; }
    $check('policy_maximum_plus_one_segments_rejected', $rejected);
    foreach ([[], [$segments[0], $segments[0]],
        [array_replace($segments[0], ['start_ms' => -1])], [array_replace($segments[0], ['text' => "\xFF"])]] as $index => $invalid) {
        $rejected = false;
        try { Prompt::citations($invalid); } catch (DomainException $error) { $rejected = true; }
        $check('invalid_segments_rejected_' . $index, $rejected);
    }
}
$failed = array_keys(array_filter($checks, static fn (bool $ok): bool => !$ok));
echo json_encode(['suite' => 'followup-audio-citations-v2', 'synthetic_only' => true, 'checks' => $checks,
    'passed' => count($checks) - count($failed), 'total' => count($checks), 'failures' => $failed],
    JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT | JSON_THROW_ON_ERROR) . PHP_EOL;
exit($failed === [] ? 0 : 1);