<?php

use App\Enums\ActivityType;
use App\Enums\ContactMessageStatus;
use App\Mail\ContactRequestSubmitted;
use App\Models\ActivityEvent;
use App\Models\ContactMessage;
use App\Models\User;
use App\Services\Spam\ContactSpamFilter;
use Illuminate\Http\Client\Request as HttpRequest;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Mail;
use Illuminate\Support\Str;
use Tests\TestCase;

/*
 * Spamschutz des Kontaktformulars (dev/sicherheit/ENTWICKLUNGSPLAN-
 * SPAMSCHUTZ-2026-10-09.md): Turnstile für Gäste, Inhaltsfilter mit
 * Quarantäne, Durchlassen und Markieren bei nicht erreichbarem Cloudflare.
 */

function enableTurnstile(): void
{
    config()->set('services.turnstile.site_key', '0x4AAAAAAAsitekey');
    config()->set('services.turnstile.secret_key', '0x4AAAAAAAsecretkeyforthetests');
    config()->set('services.turnstile.fail_open', true);
}

/**
 * @param  array<string, mixed>  $body
 */
function fakeSiteverify(array $body): void
{
    Http::fake(['challenges.cloudflare.com/*' => Http::response($body)]);
}

/**
 * @param  array<string, mixed>  $overrides
 * @return array<string, mixed>
 */
function contactPayload(array $overrides = []): array
{
    return [
        'name' => 'Paula Presse',
        'email' => 'paula@example.test',
        'message' => 'Ich habe eine Frage zu Ihrer Plattform und bitte um Rückruf.',
        'cf-turnstile-response' => 'token-aus-dem-widget',
        ...$overrides,
    ];
}

test('a guest request with a confirmed turnstile token is accepted and mailed', function () {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    fakeSiteverify(['success' => true, 'action' => 'contact', 'hostname' => 'businessportal24.test']);

    $this->post('https://businessportal24.test/de/kontakt', contactPayload())
        ->assertSessionHasNoErrors()
        ->assertSessionHas('contact-status');

    $message = ContactMessage::query()->sole();

    expect($message->status)->toBe(ContactMessageStatus::Open)
        ->and($message->payload)->toBe(['bot_check' => 'passed']);
    Mail::assertQueued(ContactRequestSubmitted::class);
    Http::assertSent(fn (HttpRequest $request) => $request->url() === 'https://challenges.cloudflare.com/turnstile/v0/siteverify'
        && $request['secret'] === '0x4AAAAAAAsecretkeyforthetests'
        && $request['response'] === 'token-aus-dem-widget'
        && $request['remoteip'] === '127.0.0.1');
});

test('a guest request without a confirmed token is rejected with a visible error', function (array $overrides, ?array $siteverify) {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    fakeSiteverify($siteverify ?? ['success' => true, 'action' => 'contact']);

    $this->post('https://businessportal24.test/de/kontakt', contactPayload($overrides))
        ->assertSessionHasErrors(['turnstile' => __('web.launcher.bot_check_failed')]);

    expect(ContactMessage::query()->count())->toBe(0);
    Mail::assertNothingOutgoing();
})->with([
    'no token' => [['cf-turnstile-response' => ''], null],
    'token rejected by cloudflare' => [[], ['success' => false, 'error-codes' => ['invalid-input-response']]],
    'token already used' => [[], ['success' => false, 'error-codes' => ['timeout-or-duplicate']]],
    'token solved for another form' => [[], ['success' => true, 'action' => 'register']],
]);

test('if cloudflare is unreachable the request is accepted and marked for review', function (array $overrides, mixed $fake) {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    Http::fake(['challenges.cloudflare.com/*' => $fake]);

    $this->post('https://presseecho.test/de/kontakt', contactPayload($overrides))
        ->assertSessionHasNoErrors()
        ->assertSessionHas('contact-status');

    $message = ContactMessage::query()->sole();

    expect($message->status)->toBe(ContactMessageStatus::Open)
        ->and($message->skippedBotCheck())->toBeTrue();
    Mail::assertQueued(ContactRequestSubmitted::class);

    $event = ActivityEvent::query()->where('type', ActivityType::BotCheckUnavailable->value)->sole();
    expect($event->subject_id)->toBe($message->id)
        ->and($event->description)->toContain($message->reference());
})->with([
    'connection fails' => [[], fn () => Http::failedConnection()],
    'siteverify answers 503' => [[], fn () => Http::response('', 503)],
    'siteverify internal error' => [[], fn () => Http::response(['success' => false, 'error-codes' => ['internal-error']])],
    'widget could not load in the browser' => [['cf-turnstile-response' => '', 'turnstile_unavailable' => '1'], fn () => Http::response(['success' => false])],
]);

test('a rejected secret key is our fault: the request passes, marked, and the error is logged', function () {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    fakeSiteverify(['success' => false, 'error-codes' => ['invalid-input-secret']]);
    Log::spy();
    Log::shouldReceive('channel')->andReturnSelf();

    $this->post('https://presseecho.test/de/kontakt', contactPayload())->assertSessionHasNoErrors();

    expect(ContactMessage::query()->sole()->skippedBotCheck())->toBeTrue();
    Log::shouldHaveReceived('error')->withArgs(fn (string $message) => str_contains($message, 'TURNSTILE_SECRET_KEY'));
});

test('with fail_open disabled an unreachable cloudflare blocks the request', function () {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    config()->set('services.turnstile.fail_open', false);
    Http::fake(['challenges.cloudflare.com/*' => Http::failedConnection()]);

    $this->post('https://presseecho.test/de/kontakt', contactPayload())->assertSessionHasErrors('turnstile');

    expect(ContactMessage::query()->count())->toBe(0);
});

test('verified customers skip turnstile and the content filter', function () {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    Http::fake();

    $this->actingAs(User::factory()->create())
        ->post('https://pressekonto.test/de/kontakt', contactPayload([
            'cf-turnstile-response' => '',
            'message' => 'Unsere Website https://beispiel-firma.de zeigt das falsche Logo, bitte prüfen.',
        ]))
        ->assertSessionHasNoErrors();

    expect(ContactMessage::query()->sole()->status)->toBe(ContactMessageStatus::Open);
    Http::assertNothingSent();
    Mail::assertQueued(ContactRequestSubmitted::class);
});

test('unconfirmed accounts are checked like guests', function () {
    /** @var TestCase $this */
    Mail::fake();
    enableTurnstile();
    Http::fake();

    $this->actingAs(User::factory()->unverified()->create())
        ->post('https://pressekonto.test/de/kontakt', contactPayload(['cf-turnstile-response' => '']))
        ->assertSessionHasErrors('turnstile');
});

test('spam from guests is quarantined silently: stored, no mail, same confirmation', function (array $overrides, string $reason) {
    /** @var TestCase $this */
    Mail::fake();

    $this->post('https://businessportal24.test/de/kontakt', contactPayload($overrides))
        ->assertSessionHasNoErrors()
        ->assertSessionHas('contact-status', __('web.launcher.success'));

    $message = ContactMessage::query()->sole();

    expect($message->status)->toBe(ContactMessageStatus::Spam)
        ->and($message->payload['spam_reason'])->toBe($reason)
        ->and($message->status->isOpen())->toBeFalse();
    Mail::assertNothingOutgoing();
    expect(ActivityEvent::query()->where('type', ActivityType::ContactRequest->value)->count())->toBe(0);
})->with([
    'link' => [['message' => 'Rolls-Royce Phantom for $15,000 https://telegra.ph/How-to-get-a-new-2026'], 'link'],
    'bare domain with path' => [['message' => 'Mehr Besucher für Ihre Seite: indexhelper.live/angebot jetzt buchen'], 'link'],
    'html link' => [['message' => '<a href=https://1sakhapresident.ru/>Президент</a> представляет'], 'link'],
    'phrase plus page title' => [['message' => 'Ich wünsche weitere Informationen. Bitte kontaktieren Sie mich per E-Mail — aktuelle pressemitteilungen aus der deutschen wirtschaft.'], 'page_title'],
    'random name' => [['name' => 'ruLrlotwaCoVStmZetSxD'], 'gibberish'],
    'letter-digit block' => [['name' => 'NAEWTRER2720160NEYRTHYT', 'message' => 'METRYTRE2720160MAWRERGTRH'], 'gibberish'],
]);

test('a form submitted faster than a human can type is quarantined', function () {
    /** @var TestCase $this */
    Mail::fake();

    $this->post('https://businessportal24.test/de/kontakt', contactPayload(['form_started' => ContactSpamFilter::startedToken()]))
        ->assertSessionHas('contact-status');

    expect(ContactMessage::query()->sole()->payload['spam_reason'])->toBe('too_fast');
    Mail::assertNothingOutgoing();
});

test('a link to one of our own pages is not spam, even next to the company website', function () {
    /** @var TestCase $this */
    Mail::fake();

    $this->post('https://businessportal24.test/de/kontakt', contactPayload([
        'message' => 'Bitte korrigieren Sie im Newsroom die Website auf https://praxis-webseiten.com, '
            .'betrifft https://businessportal24.test/de/pm/meine-meldung-123 — danke!',
    ]))->assertSessionHasNoErrors();

    expect(ContactMessage::query()->sole()->status)->toBe(ContactMessageStatus::Open);
    Mail::assertQueued(ContactRequestSubmitted::class);
});

test('a form filled in at human speed passes the time check', function () {
    /** @var TestCase $this */
    Mail::fake();
    $started = ContactSpamFilter::startedToken();
    $this->travel(20)->seconds();

    $this->post('https://businessportal24.test/de/kontakt', contactPayload(['form_started' => $started]))
        ->assertSessionHasNoErrors();

    expect(ContactMessage::query()->sole()->status)->toBe(ContactMessageStatus::Open);
});

test('a forged time stamp is ignored rather than treated as spam', function () {
    /** @var TestCase $this */
    Mail::fake();

    $this->post('https://businessportal24.test/de/kontakt', contactPayload(['form_started' => 'manipuliert']))
        ->assertSessionHasNoErrors();

    expect(ContactMessage::query()->sole()->status)->toBe(ContactMessageStatus::Open);
});

test('the launcher renders the turnstile widget and the time stamp for guests only', function () {
    /** @var TestCase $this */
    enableTurnstile();

    $this->get('https://businessportal24.test/de/faq')
        ->assertSuccessful()
        ->assertSee('0x4AAAAAAAsitekey', false)
        ->assertSee('name="turnstile_unavailable"', false)
        ->assertSee('name="form_started"', false);

    $this->actingAs(User::factory()->create())
        ->get('https://businessportal24.test/de/faq')
        ->assertSuccessful()
        ->assertDontSee('name="turnstile_unavailable"', false)
        ->assertDontSee('name="form_started"', false);
});

test('without keys no widget is rendered', function () {
    /** @var TestCase $this */
    $this->get('https://businessportal24.test/de/faq')
        ->assertSuccessful()
        ->assertDontSee('name="turnstile_unavailable"', false);
});

test('quarantined spam is pruned after 30 days, everything else stays', function () {
    /** @var TestCase $this */
    $oldSpam = ContactMessage::factory()->create(['status' => ContactMessageStatus::Spam, 'created_at' => now()->subDays(31)]);
    $freshSpam = ContactMessage::factory()->create(['status' => ContactMessageStatus::Spam, 'created_at' => now()->subDays(29)]);
    $oldOpen = ContactMessage::factory()->create(['created_at' => now()->subDays(90)]);

    $this->artisan('model:prune', ['--model' => [ContactMessage::class]])->assertSuccessful();

    expect(ContactMessage::query()->pluck('id')->all())->toEqualCanonicalizing([$freshSpam->id, $oldOpen->id])
        ->and(ContactMessage::query()->find($oldSpam->id))->toBeNull();
});

test('the csp allows the turnstile script and challenge frame', function () {
    /** @var TestCase $this */
    config()->set('security.csp.report_only', true);

    $policy = (string) $this->get('https://presseecho.test/de')->headers->get('Content-Security-Policy-Report-Only');

    expect(Str::between($policy, 'script-src', ';'))->toContain('https://challenges.cloudflare.com')
        ->and(Str::between($policy, 'frame-src', ';'))->toContain('https://challenges.cloudflare.com');
});