<?php

namespace Tests\E2E\Services\Databases\Transactions;

use Tests\E2E\Client;
use Tests\E2E\Scopes\ProjectCustom;
use Tests\E2E\Scopes\Scope;
use Tests\E2E\Scopes\SideClient;
use Utopia\Database\Helpers\ID;
use Utopia\Database\Helpers\Permission;
use Utopia\Database\Helpers\Role;
use Utopia\Database\Query;

class TransactionsTest extends Scope
{
    use ProjectCustom;
    use SideClient;

    /**
     * Test creating a transaction
     */
    public function testCreate(): array
    {
        // Create database first
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'TransactionTestDatabase'
        ]);

        $this->assertEquals(201, $database['headers']['status-code']);
        $databaseId = $database['body']['$id'];

        // Test creating a transaction with default TTL
        $response = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $this->assertEquals(201, $response['headers']['status-code']);
        $this->assertArrayHasKey('$id', $response['body']);
        $this->assertArrayHasKey('status', $response['body']);
        $this->assertArrayHasKey('operations', $response['body']);
        $this->assertArrayHasKey('expiresAt', $response['body']);
        $this->assertEquals('pending', $response['body']['status']);
        $this->assertEquals(0, $response['body']['operations']);

        $transactionId1 = $response['body']['$id'];

        // Test creating a transaction with custom TTL
        $response = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'ttl' => 900
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);
        $this->assertEquals('pending', $response['body']['status']);

        $expiresAt = new \DateTime($response['body']['expiresAt']);
        $now = new \DateTime();
        $diff = $expiresAt->getTimestamp() - $now->getTimestamp();
        $this->assertGreaterThan(800, $diff);
        $this->assertLessThan(1000, $diff);

        $transactionId2 = $response['body']['$id'];

        // Test invalid TTL values
        $response = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'ttl' => 30 // Below minimum
        ]);

        $this->assertEquals(400, $response['headers']['status-code']);

        $response = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'ttl' => 4000 // Above maximum
        ]);

        $this->assertEquals(400, $response['headers']['status-code']);

        return [
            'databaseId' => $databaseId,
            'transactionId1' => $transactionId1,
            'transactionId2' => $transactionId2
        ];
    }

    /**
     * @depends testCreate
     */
    public function testAddOperations(array $data): array
    {
        $databaseId = $data['databaseId'];
        $transactionId = $data['transactionId1'];

        // Create a collection for testing
        $collection = $this->client->call(Client::METHOD_POST, '/databases/' . $databaseId . '/collections', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TransactionOperationsTest',
            'documentSecurity' => false,
            'permissions' => [
                Permission::create(Role::any()),
                Permission::read(Role::any()),
                Permission::update(Role::any()),
                Permission::delete(Role::any()),
            ],
        ]);

        $this->assertEquals(201, $collection['headers']['status-code']);
        $collectionId = $collection['body']['$id'];

        // Add attributes
        $attribute = $this->client->call(Client::METHOD_POST, '/databases/' . $databaseId . '/collections/' . $collectionId . '/attributes/string', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'name',
            'size' => 256,
            'required' => true,
        ]);

        $this->assertEquals(202, $attribute['headers']['status-code']);

        // Wait for attribute to be created
        sleep(2);

        // Add valid operations
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => 'doc1',
                    'data' => [
                        'name' => 'Test Document 1'
                    ]
                ],
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => 'doc2',
                    'data' => [
                        'name' => 'Test Document 2'
                    ]
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);
        $this->assertEquals(2, $response['body']['operations']);

        // Test adding more operations
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'update',
                    'documentId' => 'doc1',
                    'data' => [
                        'name' => 'Updated Document 1'
                    ]
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);
        $this->assertEquals(3, $response['body']['operations']);

        // Test invalid database ID
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => 'invalid_database',
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['name' => 'Test']
                ]
            ]
        ]);

        $this->assertEquals(404, $response['headers']['status-code'], 'Invalid database should return 404. Got: ' . json_encode($response['body']));

        // Test invalid collection ID
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => 'invalid_collection',
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['name' => 'Test']
                ]
            ]
        ]);

        $this->assertEquals(404, $response['headers']['status-code']);

        return array_merge($data, [
            'collectionId' => $collectionId
        ]);
    }

    /**
     * @depends testAddOperations
     */
    public function testCommit(array $data): void
    {
        $databaseId = $data['databaseId'];
        $collectionId = $data['collectionId'];
        $transactionId = $data['transactionId1'];

        // Commit the transaction
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(200, $response['headers']['status-code']);
        $this->assertEquals('committed', $response['body']['status']);

        // Verify documents were created
        $documents = $this->client->call(Client::METHOD_GET, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
        ], $this->getHeaders()));

        $this->assertEquals(200, $documents['headers']['status-code']);
        $this->assertEquals(2, $documents['body']['total']);

        // Verify the update was applied
        $doc1Found = false;
        foreach ($documents['body']['documents'] as $doc) {
            if ($doc['$id'] === 'doc1') {
                $this->assertEquals('Updated Document 1', $doc['name']);
                $doc1Found = true;
            }
        }
        $this->assertTrue($doc1Found, 'Document doc1 should exist with updated name');

        // Test committing already committed transaction
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(400, $response['headers']['status-code']);
    }

    /**
     * @depends testCreate
     */
    public function testRollback(array $data): void
    {
        $databaseId = $data['databaseId'];
        $transactionId = $data['transactionId2'];

        // Create a collection for rollback test
        $collection = $this->client->call(Client::METHOD_POST, '/databases/' . $databaseId . '/collections', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TransactionRollbackTest',
            'documentSecurity' => false,
            'permissions' => [
                Permission::create(Role::any()),
                Permission::read(Role::any()),
                Permission::update(Role::any()),
                Permission::delete(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Add attribute
        $this->client->call(Client::METHOD_POST, '/databases/' . $databaseId . '/collections/' . $collectionId . '/attributes/string', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'value',
            'size' => 256,
            'required' => true,
        ]);

        sleep(2);

        // Add operations
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => 'rollback_doc',
                    'data' => [
                        'value' => 'Should not exist'
                    ]
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);

        // Rollback the transaction
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'rollback' => true
        ]);

        $this->assertEquals(200, $response['headers']['status-code']);
        $this->assertEquals('rolledBack', $response['body']['status']);

        // Verify no documents were created
        $documents = $this->client->call(Client::METHOD_GET, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
        ], $this->getHeaders()));

        $this->assertEquals(200, $documents['headers']['status-code']);
        $this->assertEquals(0, $documents['body']['total']);
    }

    /**
     * Test transaction expiration
     */
    public function testTransactionExpiration(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'ExpirationTestDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [
                Permission::read(Role::any()),
                Permission::create(Role::any()),
                Permission::update(Role::any()),
                Permission::delete(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attribute
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'data',
            'size' => 256,
            'required' => false,
        ]);

        sleep(2);

        // Create transaction with minimum TTL (60 seconds)
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'ttl' => 60
        ]);

        $this->assertEquals(201, $transaction['headers']['status-code']);
        $transactionId = $transaction['body']['$id'];

        // Add operation
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['data' => 'Should expire']
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);

        // Verify transaction was created with correct expiration
        $txnDetails = $this->client->call(Client::METHOD_GET, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $this->assertEquals(200, $txnDetails['headers']['status-code']);
        $this->assertEquals('pending', $txnDetails['body']['status']);

        // Verify expiration time is approximately 60 seconds from now
        $expiresAt = new \DateTime($txnDetails['body']['expiresAt']);
        $now = new \DateTime();
        $diff = $expiresAt->getTimestamp() - $now->getTimestamp();
        $this->assertGreaterThan(55, $diff);
        $this->assertLessThan(65, $diff);
    }

    /**
     * Test maximum operations per transaction
     */
    public function testTransactionSizeLimit(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'SizeLimitTestDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [Permission::create(Role::any())],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attribute
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'value',
            'size' => 256,
            'required' => false,
        ]);

        sleep(2);

        // Create transaction
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId = $transaction['body']['$id'];

        // Try to add operations exceeding the limit (assuming limit is 100)
        // We'll add 50 operations twice to test incremental limit
        $operations = [];
        for ($i = 0; $i < 50; $i++) {
            $operations[] = [
                'databaseId' => $databaseId,
                'collectionId' => $collectionId,
                'action' => 'create',
                'documentId' => 'doc_' . $i,
                'data' => ['value' => 'Test ' . $i]
            ];
        }

        // First batch should succeed
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => $operations
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);
        $this->assertEquals(50, $response['body']['operations']);

        // Second batch of 50 more operations
        $operations = [];
        for ($i = 50; $i < 100; $i++) {
            $operations[] = [
                'databaseId' => $databaseId,
                'collectionId' => $collectionId,
                'documentId' => 'doc_' . $i,
                'action' => 'create',
                'data' => ['value' => 'Test ' . $i]
            ];
        }

        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => $operations
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);
        $this->assertEquals(100, $response['body']['operations']);

        // Try to add one more operation - should fail
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => 'doc_overflow',
                    'data' => ['value' => 'This should fail']
                ]
            ]
        ]);

        $this->assertEquals(400, $response['headers']['status-code']);
    }

    /**
     * Test concurrent transactions with conflicting operations
     */
    public function testConcurrentTransactionConflicts(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'ConflictTestDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [
                Permission::read(Role::any()),
                Permission::create(Role::any()),
                Permission::update(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attribute
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/integer", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'counter',
            'required' => true,
            'min' => 0,
            'max' => 1000000,
        ]);

        sleep(2);

        // Create initial document
        $doc = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'documentId' => 'shared_doc',
            'data' => ['counter' => 100]
        ]);

        $this->assertEquals(201, $doc['headers']['status-code']);

        // Create two transactions
        $txn1 = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $txn2 = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId1 = $txn1['body']['$id'];
        $transactionId2 = $txn2['body']['$id'];

        // Both transactions try to update the same document
        $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId1}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'update',
                    'documentId' => 'shared_doc',
                    'data' => ['counter' => 200]
                ]
            ]
        ]);

        $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId2}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'update',
                    'documentId' => 'shared_doc',
                    'data' => ['counter' => 300]
                ]
            ]
        ]);

        // Commit first transaction
        $response1 = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId1}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(200, $response1['headers']['status-code']);

        // Commit second transaction - should fail with conflict
        $response2 = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId2}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(409, $response2['headers']['status-code']); // Conflict

        // Verify the document has the value from first transaction
        $doc = $this->client->call(Client::METHOD_GET, "/databases/{$databaseId}/collections/{$collectionId}/documents/shared_doc", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
        ], $this->getHeaders()));

        $this->assertEquals(200, $doc['body']['counter']);
    }

    /**
     * Test deleting a document that's being updated in a transaction
     */
    public function testDeleteDocumentDuringTransaction(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'DeleteConflictDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [
                Permission::read(Role::any()),
                Permission::create(Role::any()),
                Permission::update(Role::any()),
                Permission::delete(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attribute
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'data',
            'size' => 256,
            'required' => false,
        ]);

        sleep(2);

        // Create document
        $doc = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'documentId' => 'target_doc',
            'data' => ['data' => 'Original']
        ]);

        $this->assertEquals(201, $doc['headers']['status-code']);

        // Create transaction
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId = $transaction['body']['$id'];

        // Add update operation to transaction
        $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'update',
                    'documentId' => 'target_doc',
                    'data' => ['data' => 'Updated in transaction']
                ]
            ]
        ]);

        // Delete the document outside of transaction
        $response = $this->client->call(Client::METHOD_DELETE, "/databases/{$databaseId}/collections/{$collectionId}/documents/target_doc", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $this->assertEquals(204, $response['headers']['status-code']);

        // Try to commit transaction - should fail because document no longer exists
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(409, $response['headers']['status-code']); // Conflict
    }

    /**
     * Test bulk operations in transactions
     */
    public function testBulkOperations(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'BulkOpsDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [
                Permission::read(Role::any()),
                Permission::create(Role::any()),
                Permission::update(Role::any()),
                Permission::delete(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attributes
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'name',
            'size' => 256,
            'required' => true,
        ]);

        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'category',
            'size' => 256,
            'required' => true,
        ]);

        sleep(3);

        // Create some initial documents
        for ($i = 1; $i <= 5; $i++) {
            $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
                'content-type' => 'application/json',
                'x-appwrite-project' => $this->getProject()['$id'],
                'x-appwrite-key' => $this->getProject()['apiKey']
            ]), [
                'documentId' => 'existing_' . $i,
                'data' => [
                    'name' => 'Existing ' . $i,
                    'category' => 'old'
                ]
            ]);
        }

        // Create transaction
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId = $transaction['body']['$id'];

        // Add bulk operations
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                // Bulk create
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'bulkCreate',
                    'data' => [
                        ['$id' => 'bulk_1', 'name' => 'Bulk 1', 'category' => 'new'],
                        ['$id' => 'bulk_2', 'name' => 'Bulk 2', 'category' => 'new'],
                        ['$id' => 'bulk_3', 'name' => 'Bulk 3', 'category' => 'new'],
                    ]
                ],
                // Bulk update
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'bulkUpdate',
                    'data' => [
                        'queries' => [Query::equal('category', ['old'])->toString()],
                        'data' => ['category' => 'updated']
                    ]
                ],
                // Bulk delete
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'bulkDelete',
                    'data' => [
                        'queries' => [Query::equal('name', ['Existing 5'])->toString()]
                    ]
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);

        // Commit transaction
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(200, $response['headers']['status-code']);

        // Verify results
        $documents = $this->client->call(Client::METHOD_GET, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
        ], $this->getHeaders()));

        // Should have 7 documents (5 existing - 1 deleted + 3 new)
        $this->assertEquals(7, $documents['body']['total']);

        // Check categories were updated
        $oldCategoryCount = 0;
        $updatedCategoryCount = 0;
        $newCategoryCount = 0;

        foreach ($documents['body']['documents'] as $doc) {
            switch ($doc['category']) {
                case 'old':
                    $oldCategoryCount++;
                    break;
                case 'updated':
                    $updatedCategoryCount++;
                    break;
                case 'new':
                    $newCategoryCount++;
                    break;
            }
        }

        $this->assertEquals(0, $oldCategoryCount);
        $this->assertEquals(4, $updatedCategoryCount); // 4 existing docs updated
        $this->assertEquals(3, $newCategoryCount); // 3 new docs
    }

    /**
     * Test transaction with mixed success and failure operations
     */
    public function testPartialFailureRollback(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'PartialFailureDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [
                Permission::read(Role::any()),
                Permission::create(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attributes with constraints
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'email',
            'size' => 256,
            'required' => true,
        ]);

        sleep(2);

        // Create unique index on email
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/indexes", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'unique_email',
            'type' => 'unique',
            'attributes' => ['email'],
        ]);

        sleep(2);

        // Create an existing document
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'documentId' => ID::unique(),
            'data' => ['email' => 'existing@example.com']
        ]);

        // Create transaction
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId = $transaction['body']['$id'];

        // Add operations - mix of valid and invalid
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['email' => 'valid1@example.com'] // Valid
                ],
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['email' => 'valid2@example.com'] // Valid
                ],
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['email' => 'existing@example.com'] // Will fail - duplicate
                ],
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['email' => 'valid3@example.com'] // Would be valid but should rollback
                ],
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);

        // Try to commit - should fail and rollback all operations
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(409, $response['headers']['status-code']); // Conflict due to duplicate

        // Verify NO new documents were created (atomicity)
        $documents = $this->client->call(Client::METHOD_GET, "/databases/{$databaseId}/collections/{$collectionId}/documents", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
        ], $this->getHeaders()));

        $this->assertEquals(1, $documents['body']['total']); // Only the original document
        $this->assertEquals('existing@example.com', $documents['body']['documents'][0]['email']);
    }

    /**
     * Test double commit/rollback attempts
     */
    public function testDoubleCommitRollback(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'DoubleCommitDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [Permission::create(Role::any())],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attribute
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'data',
            'size' => 256,
            'required' => false,
        ]);

        sleep(2);

        // Test double commit
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId = $transaction['body']['$id'];

        // Add operation
        $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'create',
                    'documentId' => ID::unique(),
                    'data' => ['data' => 'Test']
                ]
            ]
        ]);

        // First commit
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(200, $response['headers']['status-code']);

        // Second commit attempt - should fail
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(400, $response['headers']['status-code']); // Bad request - already committed

        // Test double rollback
        $transaction2 = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId2 = $transaction2['body']['$id'];

        // First rollback
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId2}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'rollback' => true
        ]);

        $this->assertEquals(200, $response['headers']['status-code']);

        // Second rollback attempt - should fail
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId2}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'rollback' => true
        ]);

        $this->assertEquals(400, $response['headers']['status-code']); // Bad request - already rolled back
    }

    /**
     * Test operations on non-existent documents
     */
    public function testOperationsOnNonExistentDocuments(): void
    {
        // Create database and collection
        $database = $this->client->call(Client::METHOD_POST, '/databases', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'databaseId' => ID::unique(),
            'name' => 'NonExistentDocDB'
        ]);

        $databaseId = $database['body']['$id'];

        $collection = $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'collectionId' => ID::unique(),
            'name' => 'TestCollection',
            'permissions' => [
                Permission::create(Role::any()),
                Permission::update(Role::any()),
                Permission::delete(Role::any()),
            ],
        ]);

        $collectionId = $collection['body']['$id'];

        // Create attribute
        $this->client->call(Client::METHOD_POST, "/databases/{$databaseId}/collections/{$collectionId}/attributes/string", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'key' => 'data',
            'size' => 256,
            'required' => false,
        ]);

        sleep(2);

        // Create transaction
        $transaction = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId = $transaction['body']['$id'];

        // Try to update non-existent document
        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'update',
                    'documentId' => 'non_existent_doc',
                    'data' => ['data' => 'Should fail']
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']); // Operation added

        // Commit should fail
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(404, $response['headers']['status-code']); // Document not found

        // Test delete non-existent document
        $transaction2 = $this->client->call(Client::METHOD_POST, '/databases/transactions', array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]));

        $transactionId2 = $transaction2['body']['$id'];

        $response = $this->client->call(Client::METHOD_POST, "/databases/transactions/{$transactionId2}/operations", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'operations' => [
                [
                    'databaseId' => $databaseId,
                    'collectionId' => $collectionId,
                    'action' => 'delete',
                    'documentId' => 'non_existent_doc',
                    'data' => []
                ]
            ]
        ]);

        $this->assertEquals(201, $response['headers']['status-code']);

        // Commit should fail
        $response = $this->client->call(Client::METHOD_PATCH, "/databases/transactions/{$transactionId2}", array_merge([
            'content-type' => 'application/json',
            'x-appwrite-project' => $this->getProject()['$id'],
            'x-appwrite-key' => $this->getProject()['apiKey']
        ]), [
            'commit' => true
        ]);

        $this->assertEquals(404, $response['headers']['status-code']); // Document not found
    }
}