<?php

namespace Tests\Feature;

use App\Livewire\Auth\ForgotPassword;
use App\Models\User;
use App\Notifications\QueuedResetPassword;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Notification;
use Illuminate\Support\Facades\RateLimiter;
use Livewire\Features\SupportTesting\Testable;
use Livewire\Livewire;
use PragmaRX\Google2FAQRCode\Google2FA;
use Tests\TestCase;

/**
 * Hardening of the two low-severity account-enumeration *timing* side channels on the
 * forgot-password screen (the message-level leak is already closed via generic copy):
 *   (a) sendResetLink() must enqueue the reset mail (never send synchronously), so SMTP
 *       latency/exceptions can't distinguish a known address;
 *   (b) resetPassword() must spend comparable crypto time whether the account exists / has
 *       2FA or not, so the verification branch isn't a timing oracle.
 * These tests assert the *structural* equivalence of the branches (and that mail is queued),
 * not wall-clock timing (which would be flaky).
 */
class ForgotPasswordTimingTest extends TestCase
{
    use RefreshDatabase;

    private function twoFactorUser(string $email = 'admin@clusev.local'): User
    {
        return User::factory()->create([
            'email' => $email,
            'two_factor_secret' => (new Google2FA)->generateSecretKey(),
            'two_factor_confirmed_at' => now(),
        ]);
    }

    private function attemptReset(string $email, string $code = '123456'): Testable
    {
        return Livewire::test(ForgotPassword::class)
            ->set('email', $email)->set('code', $code)
            ->set('password', 'NewPassw0rd123')->set('password_confirmation', 'NewPassw0rd123')
            ->call('resetPassword');
    }

    // ── (a) the reset-link mail is queued ────────────────────────────────
    public function test_reset_link_notification_is_queued(): void
    {
        config(['mail.default' => 'smtp']);
        Notification::fake();
        $user = User::factory()->create(['email' => 'admin@clusev.local']);

        Livewire::test(ForgotPassword::class)
            ->set('email', $user->email)
            ->call('sendResetLink')
            ->assertHasNoErrors();

        Notification::assertSentTo(
            $user,
            QueuedResetPassword::class,
            fn ($notification) => $notification instanceof ShouldQueue,
        );
    }

    public function test_send_link_swallows_transport_errors_and_stays_generic(): void
    {
        config(['mail.default' => 'smtp']);
        // No user exists → Password::sendResetLink hits the INVALID_USER path; the screen must
        // still report the generic message with no error, exactly like the existing-user case.
        Livewire::test(ForgotPassword::class)
            ->set('email', 'ghost@clusev.local')
            ->call('sendResetLink')
            ->assertHasNoErrors()
            ->assertDispatched('notify', message: __('auth.reset_link_sent'));
    }

    // ── (b) the verification branch does constant dummy work ─────────────
    public function test_unknown_email_invalid_branch_burns_verification_time(): void
    {
        Hash::spy();

        $this->attemptReset('ghost@clusev.local')->assertHasErrors('code');

        // The no-account branch must still run a bcrypt comparison (dummy work), matching the
        // crypto cost of a real wrong-code attempt — otherwise it returns measurably faster.
        Hash::shouldHaveReceived('check')->atLeast()->once();
    }

    public function test_no_2fa_user_invalid_branch_burns_verification_time(): void
    {
        $user = User::factory()->create(['email' => 'plain@clusev.local']);
        $this->assertFalse($user->hasTwoFactorEnabled());

        Hash::spy();

        $this->attemptReset('plain@clusev.local')->assertHasErrors('code');

        Hash::shouldHaveReceived('check')->atLeast()->once();
    }

    public function test_two_factor_user_wrong_code_does_not_burn_dummy_time(): void
    {
        // The real-verification branch uses verifyTotp/useRecoveryCode, NOT the dummy Hash::check.
        $this->twoFactorUser();
        Hash::spy();

        $this->attemptReset('admin@clusev.local', '000000')->assertHasErrors('code');

        Hash::shouldNotHaveReceived('check');
    }

    // ── structural equivalence of the invalid branches ──────────────────
    public function test_missing_and_no_2fa_branches_are_structurally_identical(): void
    {
        User::factory()->create(['email' => 'real@clusev.local']);

        $missing = $this->attemptReset('ghost@clusev.local');
        $no2fa = $this->attemptReset('real@clusev.local');

        foreach ([$missing, $no2fa] as $component) {
            $component->assertHasErrors('code');
            $component->assertNoRedirect();
        }
    }

    public function test_unknown_email_hits_the_rate_limiter_like_a_real_account(): void
    {
        RateLimiter::spy();

        $this->attemptReset('ghost@clusev.local')->assertHasErrors('code');

        // The no-account path must increment the limiter exactly like a real account would —
        // no fast, un-throttled enumeration loop.
        RateLimiter::shouldHaveReceived('hit')->atLeast()->once();
    }
}