<?php

namespace Tests\Unit;

use App\Domains\Integration\Models\ClientIntegration;
use App\Domains\Integration\Models\Integration;
use App\Domains\Integration\Models\IntegrationInstance;
use App\Domains\Integration\Models\WebsiteTypeIntegration;
use App\Domains\Tenant\Models\WebsiteType;
use Illuminate\Config\Repository;
use Illuminate\Container\Container;
use Illuminate\Database\Capsule\Manager;
use Illuminate\Database\QueryException;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Facade;
use PHPUnit\Framework\TestCase;

class IntegrationInstanceSchemaTest extends TestCase
{
    private Manager $database;

    private array $migrations;

    private mixed $previousFacadeApplication;

    private Container $previousContainer;

    protected function setUp(): void
    {
        parent::setUp();
        $this->previousFacadeApplication = Facade::getFacadeApplication();
        $this->previousContainer = Container::getInstance();
        $container = new Container;
        Container::setInstance($container);
        $container->instance('config', new Repository([
            'services' => ['integrations' => ['secret' => 'schema-test-secret']],
            'app' => ['cipher' => 'AES-256-CBC'],
        ]));
        $this->database = new Manager($container);
        $this->database->addConnection(['driver' => 'sqlite', 'database' => ':memory:', 'foreign_key_constraints' => true]);
        $this->database->bootEloquent();
        $container->instance('db', $this->database->getDatabaseManager());
        $container->bind('db.schema', fn () => $this->database->getConnection()->getSchemaBuilder());
        Facade::clearResolvedInstances();
        Facade::setFacadeApplication($container);

        $schema = $this->database->getConnection()->getSchemaBuilder();
        $schema->create('clients', function (Blueprint $table): void {
            $table->id();
        });
        $schema->create('website_type', function (Blueprint $table): void {
            $table->id();
            $table->string('codigo')->unique();
        });
        (require __DIR__.'/../../database/migrations/2026_07_03_000001_create_integrations_table.php')->up();
        $schema->create('client_integrations', function (Blueprint $table): void {
            $table->id();
            $table->foreignId('client_id')->constrained('clients')->cascadeOnDelete();
            $table->string('integration_code');
            $table->longText('integration_data')->nullable();
            $table->timestamps();
            $table->foreign('integration_code')->references('integration_code')->on('integrations')->cascadeOnDelete();
            $table->unique(['client_id', 'integration_code']);
        });
        $db = $this->database->getConnection();
        $db->table('clients')->insert(['id' => 1]);
        $db->table('website_type')->insert(['codigo' => 'onticket']);
        $db->table('integrations')->insert([
            ['integration_code' => 'email', 'name' => 'Email'],
            ['integration_code' => 'telepagos', 'name' => 'Telepagos'],
        ]);
        $db->table('client_integrations')->insert([
            'client_id' => 1, 'integration_code' => 'email', 'integration_data' => 'existing-ciphertext',
        ]);
        $this->migrations = array_map(fn (string $file) => require $file, glob(__DIR__.'/../../database/migrations/2026_09_04_*.php'));
        foreach ($this->migrations as $migration) {
            $migration->up();
        }
    }

    protected function tearDown(): void
    {
        $this->database->getConnection()->disconnect();
        Facade::clearResolvedInstances();
        Facade::setFacadeApplication($this->previousFacadeApplication);
        Container::setInstance($this->previousContainer);
        parent::tearDown();
    }

    public function test_migration_preserves_ciphertext_and_rollback_restores_it(): void
    {
        $db = $this->database->getConnection();
        $association = $db->table('client_integrations')->first();
        self::assertSame('existing-ciphertext', $db->table('integration_instances')->where('id', $association->integration_instance_id)->value('integration_data'));
        self::assertFalse($db->getSchemaBuilder()->hasColumn('client_integrations', 'integration_data'));

        foreach (array_reverse($this->migrations) as $migration) {
            $migration->down();
        }
        self::assertSame('existing-ciphertext', $db->table('client_integrations')->value('integration_data'));
        self::assertFalse($db->getSchemaBuilder()->hasTable('integration_instances'));
    }

    public function test_instances_encrypt_data_and_can_be_shared_through_relations(): void
    {
        $instance = IntegrationInstance::firstOrFail();
        $instance->update(['integration_data' => ['password' => 'private-value']]);
        self::assertNotSame('private-value', $instance->getRawOriginal('integration_data'));
        self::assertSame(['password' => 'private-value'], $instance->fresh()->integration_data);
        self::assertArrayNotHasKey('integration_data', $instance->toArray());
        WebsiteTypeIntegration::create([
            'website_type_code' => 'onticket', 'integration_code' => 'email', 'integration_instance_id' => $instance->id,
        ]);
        self::assertTrue(ClientIntegration::firstOrFail()->integrationInstance->is($instance));
        self::assertTrue(WebsiteType::firstOrFail()->integrations->first()->integrationInstance->is($instance));
        self::assertSame(1, $instance->clientIntegrations()->count());
        self::assertSame(1, $instance->websiteTypeIntegrations()->count());
        self::assertTrue(Integration::where('integration_code', 'email')->firstOrFail()->instances->first()->is($instance));
    }

    public function test_retry_after_foreign_key_failure_preserves_existing_instances(): void
    {
        $db = $this->database->getConnection();
        $instanceId = $db->table('client_integrations')->value('integration_instance_id');
        // Reproduce the state left by MySQL when ADD CONSTRAINT fails after the backfill.
        $db->getSchemaBuilder()->table('client_integrations', function (Blueprint $table): void {
            $table->dropForeign('client_integrations_instance_code_fk')
                ->columns(['integration_instance_id', 'integration_code']);
            $table->longText('integration_data')->nullable();
        });
        $db->table('client_integrations')->update(['integration_data' => 'existing-ciphertext']);

        $this->migrations[1]->up();
        $this->migrations[1]->up();

        self::assertSame(1, $db->table('integration_instances')->count());
        self::assertSame($instanceId, $db->table('client_integrations')->value('integration_instance_id'));
        self::assertSame('existing-ciphertext', $db->table('integration_instances')->value('integration_data'));
        self::assertFalse($db->getSchemaBuilder()->hasColumn('client_integrations', 'integration_data'));
        $keys = $db->getSchemaBuilder()->getForeignKeys('client_integrations');
        self::assertCount(1, array_filter($keys, fn (array $key): bool => $key['columns'] === ['integration_instance_id', 'integration_code']));
    }

    public function test_association_rejects_an_instance_from_another_integration(): void
    {
        $this->expectException(QueryException::class);
        WebsiteTypeIntegration::create([
            'website_type_code' => 'onticket', 'integration_code' => 'telepagos', 'integration_instance_id' => IntegrationInstance::firstOrFail()->id,
        ]);
    }

    public function test_client_cannot_have_two_instances_of_the_same_integration(): void
    {
        $instance = IntegrationInstance::create(['integration_code' => 'email', 'name' => 'Second']);
        $this->expectException(QueryException::class);
        ClientIntegration::create(['client_id' => 1, 'integration_code' => 'email', 'integration_instance_id' => $instance->id]);
    }

    public function test_website_type_cannot_have_two_instances_of_the_same_integration(): void
    {
        WebsiteTypeIntegration::create([
            'website_type_code' => 'onticket', 'integration_code' => 'email', 'integration_instance_id' => IntegrationInstance::firstOrFail()->id,
        ]);
        $instance = IntegrationInstance::create(['integration_code' => 'email', 'name' => 'Second']);
        $this->expectException(QueryException::class);
        WebsiteTypeIntegration::create([
            'website_type_code' => 'onticket', 'integration_code' => 'email', 'integration_instance_id' => $instance->id,
        ]);
    }
}