<?php

namespace Tests\Unit\Services\Auth;

use App\Enums\PlatformEnum;
use App\Exceptions\PlatformAuthException;
use App\Models\PlatformAccount;
use App\Modules\Lemmy\Services\LemmyApiService;
use App\Services\Auth\LemmyAuthService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;
use Illuminate\Cache\CacheManager;
use Tests\TestCase;

class LemmyAuthServiceTest extends TestCase
{
    use RefreshDatabase;

    protected function setUp(): void
    {
        parent::setUp();
        
        // Don't set default HTTP mocks here - let individual tests control them
    }

    protected function tearDown(): void
    {
        parent::tearDown();
    }

    public function test_get_token_returns_cached_token_when_available(): void
    {
        // Mock HTTP to prevent any external calls (not needed since token is cached)
        Http::fake(['*' => Http::response('', 500)]);

        $account = PlatformAccount::factory()->create([
            'username' => 'testuser',
            'password' => 'testpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        $cachedToken = 'cached-jwt-token';
        $cacheKey = "lemmy_jwt_token_{$account->id}";

        // Put token in cache using Laravel's testing cache
        cache()->put($cacheKey, $cachedToken, 3000);

        $result = LemmyAuthService::getToken($account);

        $this->assertEquals($cachedToken, $result);
    }

    public function test_get_token_throws_exception_when_username_missing(): void
    {
        // Mock HTTP to prevent any external calls (not needed since it throws before API call)
        Http::fake(['*' => Http::response('', 500)]);

        // Create account with valid data first, then modify username property
        $account = PlatformAccount::factory()->create([
            'username' => 'testuser',
            'password' => 'testpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        // Use reflection to set username to null to bypass validation
        $reflection = new \ReflectionClass($account);
        $property = $reflection->getProperty('attributes');
        $property->setAccessible(true);
        $attributes = $property->getValue($account);
        $attributes['username'] = null;
        $property->setValue($account, $attributes);

        // Ensure no cached token exists
        cache()->forget("lemmy_jwt_token_{$account->id}");

        $this->expectException(PlatformAuthException::class);
        $this->expectExceptionMessage('Missing credentials for account: ');

        LemmyAuthService::getToken($account);
    }

    public function test_get_token_throws_exception_when_password_missing(): void
    {
        // Mock HTTP to prevent any external calls
        Http::fake(['*' => Http::response('', 500)]);

        // Create account with valid data first, then modify password property
        $account = PlatformAccount::factory()->create([
            'username' => 'testuser',
            'password' => 'testpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        // Use reflection to set password to null to bypass validation
        $reflection = new \ReflectionClass($account);
        $property = $reflection->getProperty('attributes');
        $property->setAccessible(true);
        $attributes = $property->getValue($account);
        $attributes['password'] = null;
        $property->setValue($account, $attributes);

        // Ensure no cached token exists
        cache()->forget("lemmy_jwt_token_{$account->id}");

        $this->expectException(PlatformAuthException::class);
        $this->expectExceptionMessage('Missing credentials for account: testuser');

        LemmyAuthService::getToken($account);
    }

    public function test_get_token_throws_exception_when_instance_url_missing(): void
    {
        // Mock HTTP to prevent any external calls
        Http::fake(['*' => Http::response('', 500)]);

        // Create account with valid data first, then modify instance_url property
        $account = PlatformAccount::factory()->create([
            'username' => 'testuser',
            'password' => 'testpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        // Use reflection to set instance_url to null to bypass validation
        $reflection = new \ReflectionClass($account);
        $property = $reflection->getProperty('attributes');
        $property->setAccessible(true);
        $attributes = $property->getValue($account);
        $attributes['instance_url'] = null;
        $property->setValue($account, $attributes);

        // Ensure no cached token exists
        cache()->forget("lemmy_jwt_token_{$account->id}");

        $this->expectException(PlatformAuthException::class);
        $this->expectExceptionMessage('Missing credentials for account: testuser');

        LemmyAuthService::getToken($account);
    }

    public function test_get_token_successfully_authenticates_and_caches_token(): void
    {
        // Mock successful HTTP response for both HTTPS and HTTP (fallback)
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response(['jwt' => 'jwt-123'], 200),
            'http://lemmy.test/api/v3/user/login' => Http::response(['jwt' => 'jwt-123'], 200)
        ]);

        $account = PlatformAccount::factory()->create([
            'username' => 'testuser',
            'password' => 'testpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        $cacheKey = "lemmy_jwt_token_{$account->id}";

        // Ensure no cached token exists initially
        cache()->forget($cacheKey);

        $result = LemmyAuthService::getToken($account);

        $this->assertEquals('jwt-123', $result);
        
        // Verify token was cached
        $this->assertEquals('jwt-123', cache()->get($cacheKey));
    }

    public function test_get_token_throws_exception_when_login_fails(): void
    {
        // Mock failed HTTP response for both HTTPS and HTTP
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response(['error' => 'Invalid credentials'], 401),
            'http://lemmy.test/api/v3/user/login' => Http::response(['error' => 'Invalid credentials'], 401)
        ]);

        $account = PlatformAccount::factory()->create([
            'username' => 'failingUser',
            'password' => 'badpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        $cacheKey = "lemmy_jwt_token_{$account->id}";

        // Ensure no cached token exists
        Cache::forget($cacheKey);

        $this->expectException(PlatformAuthException::class);
        $this->expectExceptionMessage('Login failed for account: failingUser');

        LemmyAuthService::getToken($account);
    }

    public function test_get_token_throws_exception_when_login_returns_false(): void
    {
        // Mock response with empty/missing JWT for both HTTPS and HTTP
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response(['success' => false], 200),
            'http://lemmy.test/api/v3/user/login' => Http::response(['success' => false], 200)
        ]);

        $account = PlatformAccount::factory()->create([
            'username' => 'emptyUser',
            'password' => 'pass',
            'instance_url' => 'https://lemmy.test'
        ]);

        $cacheKey = "lemmy_jwt_token_{$account->id}";

        // Ensure no cached token exists
        Cache::forget($cacheKey);

        $this->expectException(PlatformAuthException::class);
        $this->expectExceptionMessage('Login failed for account: emptyUser');

        LemmyAuthService::getToken($account);
    }

    public function test_get_token_uses_correct_cache_duration(): void
    {
        // Mock successful HTTP response for both HTTPS and HTTP
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response(['jwt' => 'xyz'], 200),
            'http://lemmy.test/api/v3/user/login' => Http::response(['jwt' => 'xyz'], 200)
        ]);

        $account = PlatformAccount::factory()->create([
            'username' => 'cacheUser',
            'password' => 'secret',
            'instance_url' => 'https://lemmy.test'
        ]);

        $cacheKey = "lemmy_jwt_token_{$account->id}";

        // Ensure no cached token exists initially
        cache()->forget($cacheKey);

        $token = LemmyAuthService::getToken($account);
        $this->assertEquals('xyz', $token);
        
        // Verify token was cached
        $this->assertEquals('xyz', cache()->get($cacheKey));
    }

    public function test_get_token_uses_account_specific_cache_key(): void
    {
        // Mock HTTP to prevent any external calls
        Http::fake(['*' => Http::response('', 500)]);

        $account1 = PlatformAccount::factory()->create(['username' => 'user1']);
        $account2 = PlatformAccount::factory()->create(['username' => 'user2']);

        $cacheKey1 = "lemmy_jwt_token_{$account1->id}";
        $cacheKey2 = "lemmy_jwt_token_{$account2->id}";

        // Set up different cached tokens for each account
        cache()->put($cacheKey1, 'token1', 3000);
        cache()->put($cacheKey2, 'token2', 3000);

        $result1 = LemmyAuthService::getToken($account1);
        $result2 = LemmyAuthService::getToken($account2);

        $this->assertEquals('token1', $result1);
        $this->assertEquals('token2', $result2);
    }

    public function test_platform_auth_exception_contains_correct_platform(): void
    {
        // Mock HTTP to prevent any external calls
        Http::fake(['*' => Http::response('', 500)]);

        // Create account with valid data first, then modify username property
        $account = PlatformAccount::factory()->create([
            'username' => 'testuser',
            'password' => 'testpass',
            'instance_url' => 'https://lemmy.test'
        ]);

        // Use reflection to set username to null to bypass validation
        $reflection = new \ReflectionClass($account);
        $property = $reflection->getProperty('attributes');
        $property->setAccessible(true);
        $attributes = $property->getValue($account);
        $attributes['username'] = null;
        $property->setValue($account, $attributes);

        // Ensure no cached token exists
        cache()->forget("lemmy_jwt_token_{$account->id}");

        try {
            LemmyAuthService::getToken($account);
            $this->fail('Expected PlatformAuthException to be thrown');
        } catch (PlatformAuthException $e) {
            $this->assertEquals(PlatformEnum::LEMMY, $e->getPlatform());
        }
    }
}