<?php

use App\Models\InstanceSettings;
use App\Models\OauthIdentity;
use App\Models\OauthSetting;
use App\Models\User;
use App\Services\Auth\OauthLoginService;
use Illuminate\Database\UniqueConstraintViolationException;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Event;
use Illuminate\Support\Once;
use Laravel\Socialite\Facades\Socialite;
use Symfony\Component\HttpKernel\Exception\HttpException;

uses(RefreshDatabase::class);

beforeEach(function () {
    InstanceSettings::forceCreate([
        'id' => 0,
        'is_registration_enabled' => false,
    ]);

    Once::flush();

    OauthSetting::create([
        'provider' => 'google',
        'client_id' => 'client-id',
        'client_secret' => 'client-secret',
        'redirect_uri' => 'https://coolify.example.com/auth/google/callback',
        'tenant' => 'example.com',
        'enabled' => true,
    ]);
});

it('logs in an existing user when the oauth provider returns a mixed-case email', function () {
    config()->set('app.maintenance.driver', 'file');

    $user = User::factory()->create([
        'email' => 'username@example.edu',
    ]);

    $provider = Mockery::mock();
    $provider->shouldReceive('setConfig')->once()->andReturnSelf();
    $provider->shouldReceive('with')->once()->with(['hd' => 'example.com'])->andReturnSelf();
    $provider->shouldReceive('user')->once()->andReturn((object) [
        'email' => 'UserName@example.edu',
        'name' => 'Example User',
        'id' => 'google-user-id',
    ]);

    Socialite::shouldReceive('driver')->once()->with('google')->andReturn($provider);

    $response = $this->get(route('auth.callback', 'google'));

    $response->assertRedirect('/');
    $this->assertAuthenticatedAs($user);
    expect(User::count())->toBe(1);
    expect(OauthIdentity::where([
        'user_id' => $user->id,
        'provider' => 'google',
        'provider_user_id' => 'google-user-id',
    ])->exists())->toBeTrue();
});

it('never moves an existing oauth identity when the provider email changes', function () {
    config()->set('app.maintenance.driver', 'file');

    $identityOwner = User::factory()->create(['email' => 'old@example.com']);
    $otherUser = User::factory()->create(['email' => 'new@example.com']);
    $identity = OauthIdentity::create([
        'user_id' => $identityOwner->id,
        'provider' => 'google',
        'issuer' => 'google',
        'provider_user_id' => 'google-user-id',
        'email' => 'old@example.com',
    ]);

    $provider = Mockery::mock();
    $provider->shouldReceive('setConfig')->once()->andReturnSelf();
    $provider->shouldReceive('with')->once()->with(['hd' => 'example.com'])->andReturnSelf();
    $provider->shouldReceive('user')->once()->andReturn((object) [
        'email' => 'new@example.com',
        'name' => 'Example User',
        'id' => 'google-user-id',
    ]);

    Socialite::shouldReceive('driver')->once()->with('google')->andReturn($provider);

    $this->get(route('auth.callback', 'google'))->assertRedirect('/');

    $this->assertAuthenticatedAs($identityOwner);
    expect($identity->refresh()->user_id)->toBe($identityOwner->id)
        ->and($identity->email)->toBe('new@example.com')
        ->and($identity->user_id)->not->toBe($otherUser->id);
});

it('continues oauth login when another request creates the identity first', function () {
    $user = User::factory()->create(['email' => 'race@example.com']);
    $eventName = 'eloquent.creating: '.OauthIdentity::class;

    Event::listen($eventName, function (OauthIdentity $identity): void {
        $attributes = $identity->getAttributes();

        DB::afterRollBack(fn () => DB::table('oauth_identities')->insert($attributes));

        throw new UniqueConstraintViolationException(
            DB::getDefaultConnection(),
            'insert into oauth_identities',
            [],
            new PDOException('duplicate identity'),
        );
    });

    try {
        $resolvedUser = app(OauthLoginService::class)->login('google', (object) [
            'email' => 'race@example.com',
            'name' => 'Race User',
            'id' => 'google-race-id',
        ], OauthSetting::where('provider', 'google')->firstOrFail());
    } finally {
        Event::forget($eventName);
    }

    expect($resolvedUser->is($user))->toBeTrue()
        ->and(OauthIdentity::where('provider_user_id', 'google-race-id')->count())->toBe(1);
    $this->assertAuthenticatedAs($user);
});

it('rejects oauth logins when the provider does not return an email address', function (?string $providerEmail) {
    config()->set('app.maintenance.driver', 'file');
    InstanceSettings::firstOrCreate([
        'id' => 0,
    ], [
        'is_registration_enabled' => false,
    ])->update([
        'is_registration_enabled' => true,
    ]);

    $provider = Mockery::mock();
    $provider->shouldReceive('setConfig')->once()->andReturnSelf();
    $provider->shouldReceive('with')->once()->with(['hd' => 'example.com'])->andReturnSelf();
    $provider->shouldReceive('user')->once()->andReturn((object) [
        'email' => $providerEmail,
        'name' => 'Example User',
        'id' => 'google-user-id',
    ]);

    Socialite::shouldReceive('driver')->once()->with('google')->andReturn($provider);

    $response = $this->from('/login')->get(route('auth.callback', 'google'));

    $response->assertRedirect('/login');
    expect(User::count())->toBe(0);
})->with([
    'null email' => [null],
    'blank email' => ['   '],
    'malformed email' => ['not-an-email'],
    'missing domain' => ['user@'],
]);

it('rejects oauth logins when the provider does not return a valid user id', function (mixed $invalidId) {
    $oauthUser = (object) [
        'email' => 'user@example.edu',
        'name' => 'Example User',
    ];

    if ($invalidId !== 'missing') {
        $oauthUser->id = $invalidId;
    }

    try {
        app(OauthLoginService::class)->login('google', $oauthUser, OauthSetting::where('provider', 'google')->firstOrFail());
    } catch (HttpException $exception) {
        expect($exception->getStatusCode())->toBe(403)
            ->and(OauthIdentity::count())->toBe(0)
            ->and(User::count())->toBe(0);

        return;
    }

    $this->fail('Expected an invalid OAuth provider user ID to be rejected.');
})->with([
    'null id' => [null],
    'missing id' => ['missing'],
    'blank id' => ['   '],
    'non-scalar id' => [[]],
    'true id' => [true],
    'false id' => [false],
    'float id' => [1.0],
]);