<?php

use App\Events\User\TwoFactorDisabled;
use App\Events\User\TwoFactorEnabled;
use App\Models\User;
use Carbon\Carbon;
use Facades\Tests\Setup\UserFactory;
use Illuminate\Foundation\Testing\RefreshDatabase;
use PragmaRX\Google2FA\Google2FA;
use Tests\UpdatesSettings;

uses(RefreshDatabase::class);
uses(UpdatesSettings::class);

beforeEach(function () {
    $this->artisan('db:seed');
});

test('the 2fa form is visible on profile page if 2fa is enabled', function () {
    config(['services.authy.key' => 'test']);

    $this->setSettings(['2fa.enabled' => false]);

    // The tab is rendered client side from the shared setting, so that flag
    // is what decides whether it appears rather than the markup.
    $this->assertFalse(twoFactorAuthSetting('profile'));

    $this->setSettings(['2fa.enabled' => true]);

    $this->assertTrue(twoFactorAuthSetting('profile'));
});

test('the 2fa form is visible on edit user page if 2fa is enabled', function () {
    config(['services.authy.key' => 'test']);

    $this->setSettings(['2fa.enabled' => false]);

    $user = UserFactory::create();

    $this->assertFalse(twoFactorAuthSetting("/users/{$user->id}/edit"));

    $this->setSettings(['2fa.enabled' => true]);

    $this->assertTrue(twoFactorAuthSetting("/users/{$user->id}/edit"));
});

/**
 * The `2fa.enabled` shared prop, which drives the Two-Factor tab.
 */
function twoFactorAuthSetting(string $url): bool
{
    return (bool) test()->actingAsAdmin()
        ->get($url)
        ->viewData('page')['props']['settings']['2fa.enabled'];
}

test('enable 2fa from profile page', function () {
    $this->setSettings(['2fa.enabled' => true]);

    $user = UserFactory::user()->create();

    $this->actingAs($user)
        ->post('/two-factor/enable')
        ->assertRedirect('/')
        ->assertSessionHas('tab', '2fa');

    $this->assertTrue(
        DB::table('users')
            ->where('id', $user->id)
            ->whereNotNull('two_factor_secret')
            ->exists()
    );
});

test('enable 2fa from edit user page', function () {
    $this->setSettings(['2fa.enabled' => true]);

    $user = UserFactory::user()->create();

    $formData = ['user' => $user->id];

    $this->actingAsAdmin()
        ->post("users/{$user->id}/two-factor/enable", $formData)
        ->assertRedirect('/')
        ->assertSessionHas('tab', '2fa');

    $this->assertTrue(
        DB::table('users')
            ->where('id', $user->id)
            ->whereNotNull('two_factor_secret')
            ->exists()
    );
});

test('users without appropriate permissions cannot enable 2fa for other users', function () {
    $this->setSettings(['2fa.enabled' => true]);

    $this->be(UserFactory::user()->create());

    $user = UserFactory::user()->create();

    $this->post('two-factor/enable', [
        'user' => $user->id,
    ])->assertStatus(403);

    $this->assertTrue(
        DB::table('users')
            ->where('id', $user->id)
            ->whereNull('two_factor_secret')
            ->exists()
    );
});

test('code field is required during 2fa verification', function () {
    $this->setSettings(['2fa.enabled' => true]);

    $user = UserFactory::user()->create();
    $user->two_factor_secret = '123123';
    $user->save();

    $this->actingAs($user)
        ->post('two-factor/verify')
        ->assertSessionHasErrors('code');
});

test('the 2fa verification with wrong token will fail', function () {
    $google2fa = new Google2FA;
    $secret = encrypt($google2fa->generateSecretKey());

    $this->withoutExceptionHandling();
    $this->setSettings(['2fa.enabled' => true]);

    $user = UserFactory::user()->create();
    $user->two_factor_secret = $secret;
    $user->save();

    $this->actingAs($user)
        ->post('two-factor/verify', ['code' => '123123']);

    $this->assertSessionHasError('Invalid 2FA token.');
});

test('successful 2fa code verification', function () {
    $google2fa = new Google2FA;
    $secret = encrypt($google2fa->generateSecretKey());

    $this->setSettings(['2fa.enabled' => true]);

    Event::fake([
        TwoFactorEnabled::class,
    ]);

    $user = UserFactory::user()->create();
    $user->two_factor_secret = $secret;
    $user->save();

    $validCode = $google2fa->getCurrentOtp(decrypt($user->two_factor_secret));

    $this->actingAs($user)
        ->post('two-factor/verify', ['code' => $validCode])
        ->assertRedirect('/profile');

    $this->assertDatabaseHas('users', [
        'id' => $user->id,
        'two_factor_secret' => $secret,
    ]);

    Event::assertDispatched(TwoFactorEnabled::class);
});

test('user can disable 2fa', function () {
    $google2fa = new Google2FA;
    $secret = encrypt($google2fa->generateSecretKey());

    $this->setSettings(['2fa.enabled' => true]);

    $user = UserFactory::user()->create();
    $user->two_factor_secret = $secret;
    $user->two_factor_confirmed_at = Carbon::now();
    $user->save();

    $this->be($user);

    Event::fake([
        TwoFactorDisabled::class,
    ]);

    $this->from('/profile')
        ->post('two-factor/disable')
        ->assertRedirect('/profile');

    $this->assertSessionHasSuccess('Two-Factor Authentication disabled successfully.');

    Event::assertDispatched(TwoFactorDisabled::class);
});

test('user can disable 2fa for another user', function () {
    $google2fa = new Google2FA;
    $secret = encrypt($google2fa->generateSecretKey());

    $this->setSettings(['2fa.enabled' => true]);

    Event::fake([
        TwoFactorDisabled::class,
    ]);

    $this->beAdmin();

    $user = UserFactory::user()->create();
    $user->two_factor_secret = $secret;
    $user->two_factor_confirmed_at = Carbon::now();
    $user->save();

    $this->from("/users/{$user->id}/edit")
        ->post("/users/{$user->id}/two-factor/disable", ['user' => $user->id])
        ->assertRedirect("/users/{$user->id}/edit");

    $this->assertDatabaseHas('users', [
        'id' => $user->id,
        'two_factor_secret' => null,
    ]);

    $this->assertSessionHasSuccess('Two-Factor Authentication disabled successfully.');
    Event::assertDispatched(TwoFactorDisabled::class);
});

test('user without appropriate permissions cannot disable 2fa for another user', function () {
    $this->setSettings(['2fa.enabled' => true]);

    $this->be(UserFactory::user()->create());

    $user = User::factory()->create();

    $this->post('two-factor/disable', ['user' => $user->id])->assertForbidden();
});