<?php

declare(strict_types=1);

namespace MeshVault\Tests\Integration;

use DomainException;
use MeshVault\Repository\CatalogRepositoryInterface;
use MeshVault\Repository\ImportJobRepositoryInterface;
use MeshVault\Repository\PdoCatalogRepository;
use MeshVault\Repository\PdoImportJobRepository;
use PDO;
use PHPUnit\Framework\TestCase;
use RuntimeException;

final class RepositoryTest extends TestCase
{
    private PDO $pdo;
    private string $database;

    protected function setUp(): void
    {
        $this->database = tempnam(sys_get_temp_dir(), 'meshvault-repository-');
        $this->pdo = RepositoryDatabase::migrate($this->database);
    }

    protected function tearDown(): void
    {
        unset($this->pdo);
        unlink($this->database);
    }

    public function testCatalogGroupingAndFileLifecycle(): void
    {
        self::assertTrue(class_exists(PdoCatalogRepository::class), 'Catalog repository must exist');
        $catalog = new PdoCatalogRepository($this->pdo);
        self::assertInstanceOf(CatalogRepositoryInterface::class, $catalog);
        $model = $catalog->ensureModel('/vehicles/aircraft', 'Plane');
        self::assertSame($model, $catalog->ensureModel('/vehicles/aircraft', 'Plane'));
        self::assertNotSame($model, $catalog->ensureModel('/vehicles/aircraft', 'Other'));
        $root = $catalog->ensureModel('/', 'Root');
        self::assertNull($catalog->aggregate($root)['folder']['parent_id']);
        self::assertSame(3, (int) $this->pdo->query('SELECT COUNT(*) FROM folders')->fetchColumn());
        $file = $catalog->recordFile($model, 'vehicles/aircraft/wing.stl', str_repeat('a', 64), 12, 'model/stl');
        self::assertSame($file, $catalog->recordFile($model, 'vehicles/aircraft/wing.stl', str_repeat('a', 64), 12));
        foreach (['Missing', 'Updated', 'Duplicate', 'Present'] as $status) {
            $catalog->setFileStatus($file, $status);
            self::assertSame($status, $catalog->aggregate($model)['files'][0]['status']);
        }
        $aggregate = $catalog->aggregate($model);
        self::assertSame('Plane', $aggregate['model']['name']);
        self::assertSame('/vehicles/aircraft', $aggregate['folder']['path']);
        self::assertSame('model/stl', $aggregate['files'][0]['mime_type']);
        self::assertNull($catalog->aggregate(99999));
        $this->expectException(DomainException::class);
        $catalog->recordFile($model, 'vehicles/aircraft/wing.stl', str_repeat('b', 64), 12);
    }

    public function testRecoveryReleaseCancellationFailureAndEmptyJobs(): void
    {
        self::assertTrue(class_exists(PdoImportJobRepository::class));
        $jobs = new PdoImportJobRepository($this->pdo);
        $manifest = [['source_path' => '/a', 'size' => 5, 'model_id' => null]];
        $job = $jobs->create('/', $manifest);
        $jobs->claimNext();
        $item = (int) $jobs->items($job)[0]['id'];
        $jobs->planItem($item, 'a', 'hash', 5);
        $jobs->release($job);
        self::assertSame('Pending', $jobs->get($job)['status']);
        $jobs->claimNext();
        $jobs->resumeInterrupted();
        self::assertSame('Pending', $jobs->items($job)[0]['status']);
        self::assertSame('a', $jobs->items($job)[0]['managed_path']);
        $this->pdo->exec("UPDATE import_jobs SET status = 'Scanning' WHERE id = $job");
        $jobs->resumeInterrupted();
        self::assertSame('Pending', $jobs->get($job)['status']);
        $jobs->cancel($job);
        $jobs->cancel($job);
        $jobs->resumeInterrupted();
        self::assertSame('Cancelled', $jobs->get($job)['status']);
        self::assertSame('Skipped', $jobs->items($job)[0]['status']);
        $failed = $jobs->create('/', $manifest);
        $jobs->fail($failed, 'disk full');
        $jobs->fail($failed, 'disk full');
        self::assertSame('Failed', $jobs->get($failed)['status']);
        self::assertSame('disk full', $jobs->items($failed)[0]['failure_reason']);
        $empty = $jobs->create('/', []);
        $jobs->completeEmpty($empty);
        $jobs->completeEmpty($empty);
        self::assertSame('Completed', $jobs->get($empty)['status']);
        $scan = $jobs->create('/', [
            ['source_path' => '/bad', 'size' => 0, 'model_id' => null,
                'status' => 'Failed', 'failure_reason' => 'scan failed'],
        ]);
        self::assertSame('Failed', $jobs->get($scan)['status']);
        self::assertSame(1, (int) $jobs->get($scan)['processed_files']);
        self::assertNull($jobs->claimNext());
    }

    public function testImmutablePlansAndSuccessfulCompletion(): void
    {
        self::assertTrue(class_exists(PdoImportJobRepository::class));
        $jobs = new PdoImportJobRepository($this->pdo);
        $job = $jobs->create('/', [['source_path' => '/a', 'size' => 5, 'model_id' => null]]);
        $jobs->claimNext();
        $item = (int) $jobs->items($job)[0]['id'];
        $jobs->planItem($item, 'a', 'hash', 5);
        foreach ([['b', 'hash', 5], ['a', 'other', 5], ['a', 'hash', 6]] as $plan) {
            try {
                $jobs->planItem($item, ...$plan);
                self::fail('Plan mutation accepted');
            } catch (DomainException) {
                self::assertSame('a', $jobs->items($job)[0]['managed_path']);
            }
        }
        $jobs->finishItem($item, 'Completed');
        self::assertSame('Completed', $jobs->get($job)['status']);
        $this->expectException(DomainException::class);
        $jobs->finishItem($item, 'Failed', 'late failure');
    }

    public function testAtomicRollbackAndIndependentClaims(): void
    {
        self::assertTrue(class_exists(PdoImportJobRepository::class));
        $jobs = new PdoImportJobRepository($this->pdo);
        $catalog = new PdoCatalogRepository($this->pdo);
        $job = $jobs->create('/', [['source_path' => '/a', 'size' => 5, 'model_id' => null]]);
        $second = $jobs->create('/', []);
        $other = new PdoImportJobRepository(new PDO('sqlite:' . $this->database));
        self::assertSame($job, (int) $jobs->claimNext()['id']);
        self::assertSame($second, (int) $other->claimNext()['id']);
        self::assertNull($other->claimNext());
        try {
            $jobs->atomic(function () use ($jobs, $catalog, $job): void {
                $model = $catalog->ensureModel('/rollback', 'Rollback');
                $catalog->recordFile($model, 'rollback/a', 'hash', 5);
                $jobs->finishItem((int) $jobs->items($job)[0]['id'], 'Completed');
                throw new RuntimeException('rollback');
            });
            self::fail('Expected rollback');
        } catch (RuntimeException $error) {
            self::assertSame('rollback', $error->getMessage());
        }
        self::assertSame(0, (int) $this->pdo->query('SELECT COUNT(*) FROM models')->fetchColumn());
        self::assertSame('Pending', $jobs->items($job)[0]['status']);
        self::assertSame(42, $jobs->atomic(static fn (): int => 42));
        $before = (int) $this->pdo->query('SELECT COUNT(*) FROM import_jobs')->fetchColumn();
        try {
            $jobs->create('/', [
                ['source_path' => '/valid', 'size' => 1, 'model_id' => null],
                ['source_path' => '/invalid', 'size' => 1, 'model_id' => 99999],
            ]);
            self::fail('Expected foreign key rejection');
        } catch (\PDOException) {
            self::assertSame($before, (int) $this->pdo->query('SELECT COUNT(*) FROM import_jobs')->fetchColumn());
        }
    }

    public function testManifestClaimPlanProgressAndIdempotency(): void
    {
        self::assertTrue(class_exists(PdoImportJobRepository::class), 'Job repository must exist');
        $jobs = new PdoImportJobRepository($this->pdo);
        self::assertInstanceOf(ImportJobRepositoryInterface::class, $jobs);
        $job = $jobs->create('/source', [
            ['source_path' => '/source/a', 'size' => 10, 'model_id' => null],
            ['source_path' => '/source/b', 'size' => 20, 'model_id' => null],
            ['source_path' => '/source/c', 'size' => 30, 'model_id' => null],
        ]);
        self::assertSame('Pending', $jobs->get($job)['status']);
        self::assertSame(60, (int) $jobs->get($job)['total_bytes']);
        self::assertSame($job, (int) $jobs->claimNext()['id']);
        self::assertNotNull($jobs->get($job)['started_at']);
        self::assertNull($jobs->claimNext());
        $items = $jobs->items($job);
        $jobs->planItem((int) $items[0]['id'], 'a.stl', str_repeat('a', 64), 10);
        $jobs->planItem((int) $items[0]['id'], 'a.stl', str_repeat('a', 64), 10);
        self::assertSame('Copying', $jobs->items($job)[0]['status']);
        self::assertSame('a.stl', $jobs->items($job)[0]['managed_path']);
        $jobs->finishItem((int) $items[0]['id'], 'Completed');
        $jobs->finishItem((int) $items[0]['id'], 'Completed');
        self::assertSame(1, (int) $jobs->get($job)['processed_files']);
        self::assertSame(10, (int) $jobs->get($job)['copied_bytes']);
        $jobs->finishItem((int) $items[1]['id'], 'Skipped');
        $jobs->finishItem((int) $items[2]['id'], 'Failed', 'unreadable');
        self::assertSame('Failed', $jobs->get($job)['status']);
        self::assertSame(3, (int) $jobs->get($job)['processed_files']);
        self::assertSame('unreadable', $jobs->items($job)[2]['failure_reason']);
        self::assertNotNull($jobs->get($job)['completed_at']);
        self::assertNull($jobs->get(99999));
        self::assertSame([], $jobs->items(99999));
    }
}