<?php

declare(strict_types=1);

$baseUrl = rtrim((string)(getenv('SMOKE_BASE_URL') ?: 'http://127.0.0.1:8080'), '/');
$issuePattern = '~(?:Deprecated|Warning|Fatal error|Parse error|Notice|Uncaught (?:Error|Exception))~i';

$checks = [
    [
        'label' => 'Landingpage',
        'path' => 'landing.php',
        'contains' => ['Kaffeeliste', 'Kundenkonto anlegen', 'Mandantenfaehig'],
    ],
    [
        'label' => 'Dashboard',
        'path' => 'index.php',
        'contains' => ['Hallo Test Admin', 'Aktueller Stand'],
    ],
    [
        'label' => 'Striche erfassen',
        'path' => 'stricheintragen.php',
        'contains' => ['Anzahl der Striche'],
    ],
    [
        'label' => 'Einzahlungen erfassen',
        'path' => 'einzahlung.php',
        'contains' => ['Einzahlungen'],
    ],
    [
        'label' => 'Kaffeeliste',
        'path' => 'kaffeeliste.php',
        'contains' => ['Aktive Mitarbeiter'],
    ],
    [
        'label' => 'Ledger Preview',
        'path' => 'ledger-preview.php',
        'contains' => ['Ledger Preview', 'Tenant-Summen', 'Letzte Ledger-Buchungen'],
    ],
    [
        'label' => 'Mitgliederverwaltung',
        'path' => 'mitarbeiterverwalten.php',
        'contains' => ['Mitglieder verwalten', 'PayPal-Name'],
    ],
    [
        'label' => 'Letzte Eintraege',
        'path' => 'letzteneintraege.php',
        'contains' => ['Letzte 100 Einzahlungen'],
    ],
    [
        'label' => 'CSV-Upload',
        'path' => 'csvupload.php',
        'contains' => ['CSV Verarbeitung'],
    ],
    [
        'label' => 'Hinweise',
        'path' => 'hinweise.php',
        'contains' => ['Kaffeeliste - Hinweise'],
    ],
    [
        'label' => 'FAQ',
        'path' => 'faq.php',
        'contains' => ['FAQ - Kaffeeliste'],
    ],
    [
        'label' => 'Login',
        'path' => 'login.php',
        'contains' => ['Login', 'Registrieren', 'Passwort vergessen'],
    ],
    [
        'label' => 'Registrierung',
        'path' => 'register.php',
        'contains' => ['Registrierung', 'Kundenkonto anlegen'],
    ],
    [
        'label' => 'Passwort vergessen',
        'path' => 'passwort-vergessen.php',
        'contains' => ['Passwort vergessen', 'Link vorbereiten'],
    ],
    [
        'label' => 'Mandantenauswahl Login-Schutz',
        'path' => 'mandant-auswahl.php',
        'contains' => ['Login'],
    ],
    [
        'label' => 'Passwort zuruecksetzen Invalid',
        'path' => 'passwort-zuruecksetzen.php',
        'contains' => ['Passwort zuruecksetzen', 'ungueltig oder abgelaufen'],
    ],
    [
        'label' => 'E-Mail verifizieren Invalid',
        'path' => 'email-verifizieren.php',
        'contains' => ['E-Mail verifizieren', 'ungueltig oder abgelaufen'],
    ],
    [
        'label' => 'Mandant-Einstellungen Login-Schutz',
        'path' => 'mandant-einstellungen.php',
        'contains' => ['Login'],
    ],
    [
        'label' => 'Namensanpassung',
        'path' => 'namenanpassen.php',
        'contains' => ['Anzeigenamen aktualisieren'],
    ],
    [
        'label' => 'Teilnehmerauswertung',
        'path' => 'teilnehmerauswertung.php?user_id=1',
        'contains' => ['Auswertung', 'Test Admin'],
    ],
    [
        'label' => 'Mailausgabe',
        'path' => 'mailausgebe.php',
        'contains' => ['admin@test.local'],
    ],
    [
        'label' => 'Umfrage',
        'path' => 'umfrage.php',
        'contains' => ['Kaffeeliste', 'Danke'],
    ],
    [
        'label' => 'Umfrageergebnisse',
        'path' => 'umfrageergebnisse.php',
        'contains' => ['Umfrage', 'Ergebnisse'],
    ],
];

$knownIssueChecks = [
    [
        'label' => 'PDF-Export',
        'path' => 'exportKaffeeliste.php',
        'expected_issue' => '~TCPDF/include/tcpdf_font_data\.php|Failed opening required .*/TCPDF/include/~i',
        'reason' => 'TCPDF ist im Repo nur teilweise vorhanden; das include-Verzeichnis fehlt.',
    ],
];

$skippedUnsafe = [
    [
        'path' => 'mailversenden.php',
        'reason' => 'GET kann bei vollstaendiger PHPMailer-Installation E-Mails versenden.',
    ],
    [
        'path' => 'jahresauswertung.php',
        'reason' => 'GET kann Jahresbuchungen schreiben und E-Mails versenden; PHPMailer-Abhaengigkeit ist zudem unvollstaendig.',
    ],
];

function smoke_fetch(string $url): array
{
    $context = stream_context_create([
        'http' => [
            'method' => 'GET',
            'timeout' => 15,
            'ignore_errors' => true,
            'header' => "User-Agent: KaffeelisteHttpSmoke/1.0\r\n",
        ],
    ]);

    $body = @file_get_contents($url, false, $context);
    $headers = $http_response_header ?? [];
    $status = 0;

    foreach ($headers as $header) {
        if (preg_match('~^HTTP/\S+\s+(\d{3})~', $header, $matches) === 1) {
            $status = (int)$matches[1];
        }
    }

    if ($body === false) {
        $error = error_get_last();
        return [
            'status' => $status,
            'body' => '',
            'error' => $error['message'] ?? 'Unknown HTTP error',
        ];
    }

    return [
        'status' => $status,
        'body' => $body,
        'error' => null,
    ];
}

function smoke_url(string $baseUrl, string $path): string
{
    return $baseUrl . '/' . ltrim($path, '/');
}

$failures = [];
$passes = 0;

echo "HTTP smoke base URL: {$baseUrl}\n";

foreach ($checks as $check) {
    $url = smoke_url($baseUrl, $check['path']);
    $response = smoke_fetch($url);
    $label = $check['label'] . ' (' . $check['path'] . ')';

    if ($response['error'] !== null) {
        $failures[] = "{$label}: {$response['error']}";
        echo "FAIL {$label}\n";
        continue;
    }

    if ($response['status'] !== 200) {
        $failures[] = "{$label}: expected HTTP 200, got HTTP {$response['status']}";
        echo "FAIL {$label}\n";
        continue;
    }

    if (preg_match($issuePattern, $response['body'], $matches) === 1) {
        $failures[] = "{$label}: PHP issue marker found ({$matches[0]})";
        echo "FAIL {$label}\n";
        continue;
    }

    foreach ($check['contains'] as $needle) {
        if (!str_contains($response['body'], $needle)) {
            $failures[] = "{$label}: expected text not found: {$needle}";
            echo "FAIL {$label}\n";
            continue 2;
        }
    }

    $passes++;
    echo "PASS {$label}\n";
}

foreach ($knownIssueChecks as $check) {
    $url = smoke_url($baseUrl, $check['path']);
    $response = smoke_fetch($url);
    $label = $check['label'] . ' (' . $check['path'] . ')';

    if ($response['error'] !== null) {
        echo "KNOWN {$label}: {$check['reason']} ({$response['error']})\n";
        continue;
    }

    if (preg_match($check['expected_issue'], $response['body']) === 1) {
        echo "KNOWN {$label}: {$check['reason']}\n";
        continue;
    }

    if ($response['status'] === 200 && preg_match($issuePattern, $response['body']) !== 1) {
        echo "RESOLVED {$label}: bitte in die regulaeren Smoke-Checks aufnehmen.\n";
        continue;
    }

    $failures[] = "{$label}: unexpected response while checking known issue";
    echo "FAIL {$label}\n";
}

foreach ($skippedUnsafe as $skip) {
    echo "SKIP {$skip['path']}: {$skip['reason']}\n";
}

if ($failures !== []) {
    echo "\nHTTP smoke failed with " . count($failures) . " failure(s):\n";
    foreach ($failures as $failure) {
        echo "- {$failure}\n";
    }
    exit(1);
}

echo "\nHTTP smoke passed with {$passes} checked pages.\n";