import { expect, tap } from '@git.zone/tstest/tapbundle';
import * as qenv from '@push.rocks/qenv';
import { RegistryStorage } from '../ts/core/classes.registrystorage.js';
import type { IStorageConfig } from '../ts/core/interfaces.core.js';
import type { IStorageHooks, IStorageHookContext } from '../ts/core/interfaces.storage.js';
import { createTrackingHooks, createQuotaHooks, generateTestRunId } from './helpers/registry.js';

const testQenv = new qenv.Qenv('./', './.nogit');

// ============================================================================
// Test State
// ============================================================================

let storage: RegistryStorage;
let storageConfig: IStorageConfig;
let testRunId: string;

// ============================================================================
// Setup
// ============================================================================

tap.test('setup: should create storage config', async () => {
  testRunId = generateTestRunId();

  const s3AccessKey = await testQenv.getEnvVarOnDemand('S3_ACCESSKEY');
  const s3SecretKey = await testQenv.getEnvVarOnDemand('S3_SECRETKEY');
  const s3Endpoint = await testQenv.getEnvVarOnDemand('S3_ENDPOINT');
  const s3Port = await testQenv.getEnvVarOnDemand('S3_PORT');

  storageConfig = {
    accessKey: s3AccessKey || 'minioadmin',
    accessSecret: s3SecretKey || 'minioadmin',
    endpoint: s3Endpoint || 'localhost',
    port: parseInt(s3Port || '9000', 10),
    useSsl: false,
    region: 'us-east-1',
    bucketName: `test-hooks-${testRunId}`,
  };

  expect(storageConfig.bucketName).toBeTruthy();
});

// ============================================================================
// beforePut Hook Tests
// ============================================================================

tap.test('beforePut: should be called before storage', async () => {
  const tracker = createTrackingHooks();

  storage = new RegistryStorage(storageConfig, tracker.hooks);
  await storage.init();

  // Set context and put object
  storage.setContext({
    protocol: 'npm',
    actor: { userId: 'testuser' },
    metadata: { packageName: 'test-package' },
  });

  await storage.putObject('test/beforeput-called.txt', Buffer.from('test data'));
  storage.clearContext();

  // Verify beforePut was called
  const beforePutCalls = tracker.calls.filter(c => c.method === 'beforePut');
  expect(beforePutCalls.length).toEqual(1);
  expect(beforePutCalls[0].context.operation).toEqual('put');
  expect(beforePutCalls[0].context.key).toEqual('test/beforeput-called.txt');
  expect(beforePutCalls[0].context.protocol).toEqual('npm');
});

tap.test('beforePut: returning {allowed: false} should block storage', async () => {
  const tracker = createTrackingHooks({ beforePutAllowed: false });

  const blockingStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await blockingStorage.init();

  blockingStorage.setContext({
    protocol: 'npm',
    actor: { userId: 'testuser' },
  });

  let errorThrown = false;
  try {
    await blockingStorage.putObject('test/should-not-exist.txt', Buffer.from('blocked data'));
  } catch (error) {
    errorThrown = true;
    expect((error as Error).message).toContain('Blocked by test');
  }

  blockingStorage.clearContext();

  expect(errorThrown).toBeTrue();

  // Verify object was NOT stored
  const result = await blockingStorage.getObject('test/should-not-exist.txt');
  expect(result).toBeNull();
});

// ============================================================================
// afterPut Hook Tests
// ============================================================================

tap.test('afterPut: should be called after successful storage', async () => {
  const tracker = createTrackingHooks();

  const trackedStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await trackedStorage.init();

  trackedStorage.setContext({
    protocol: 'maven',
    actor: { userId: 'maven-user' },
  });

  await trackedStorage.putObject('test/afterput-test.txt', Buffer.from('after put test'));
  trackedStorage.clearContext();

  // Give async hook time to complete
  await new Promise(resolve => setTimeout(resolve, 100));

  const afterPutCalls = tracker.calls.filter(c => c.method === 'afterPut');
  expect(afterPutCalls.length).toEqual(1);
  expect(afterPutCalls[0].context.operation).toEqual('put');
});

tap.test('afterPut: should receive correct metadata (size, key, protocol)', async () => {
  const tracker = createTrackingHooks();

  const metadataStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await metadataStorage.init();

  const testData = Buffer.from('metadata test data - some content here');

  metadataStorage.setContext({
    protocol: 'cargo',
    actor: { userId: 'cargo-user', ip: '192.168.1.100' },
    metadata: { packageName: 'my-crate', version: '1.0.0' },
  });

  await metadataStorage.putObject('test/metadata-test.txt', testData);
  metadataStorage.clearContext();

  await new Promise(resolve => setTimeout(resolve, 100));

  const afterPutCalls = tracker.calls.filter(c => c.method === 'afterPut');
  expect(afterPutCalls.length).toBeGreaterThanOrEqual(1);

  const call = afterPutCalls[afterPutCalls.length - 1];
  expect(call.context.metadata?.size).toEqual(testData.length);
  expect(call.context.key).toEqual('test/metadata-test.txt');
  expect(call.context.protocol).toEqual('cargo');
  expect(call.context.actor?.userId).toEqual('cargo-user');
  expect(call.context.actor?.ip).toEqual('192.168.1.100');
});

// ============================================================================
// beforeDelete Hook Tests
// ============================================================================

tap.test('beforeDelete: should be called before deletion', async () => {
  const tracker = createTrackingHooks();

  const deleteStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await deleteStorage.init();

  // First, store an object
  deleteStorage.setContext({ protocol: 'npm' });
  await deleteStorage.putObject('test/to-delete.txt', Buffer.from('delete me'));

  // Now delete it
  await deleteStorage.deleteObject('test/to-delete.txt');
  deleteStorage.clearContext();

  const beforeDeleteCalls = tracker.calls.filter(c => c.method === 'beforeDelete');
  expect(beforeDeleteCalls.length).toEqual(1);
  expect(beforeDeleteCalls[0].context.operation).toEqual('delete');
  expect(beforeDeleteCalls[0].context.key).toEqual('test/to-delete.txt');
});

tap.test('beforeDelete: returning {allowed: false} should block deletion', async () => {
  const tracker = createTrackingHooks({ beforeDeleteAllowed: false });

  const protectedStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await protectedStorage.init();

  // First store an object
  protectedStorage.setContext({ protocol: 'npm' });
  await protectedStorage.putObject('test/protected.txt', Buffer.from('protected data'));

  // Try to delete - should be blocked
  let errorThrown = false;
  try {
    await protectedStorage.deleteObject('test/protected.txt');
  } catch (error) {
    errorThrown = true;
    expect((error as Error).message).toContain('Blocked by test');
  }

  protectedStorage.clearContext();

  expect(errorThrown).toBeTrue();

  // Verify object still exists
  const result = await protectedStorage.getObject('test/protected.txt');
  expect(result).toBeTruthy();
});

// ============================================================================
// afterDelete Hook Tests
// ============================================================================

tap.test('afterDelete: should be called after successful deletion', async () => {
  const tracker = createTrackingHooks();

  const afterDeleteStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await afterDeleteStorage.init();

  afterDeleteStorage.setContext({ protocol: 'pypi' });
  await afterDeleteStorage.putObject('test/delete-tracked.txt', Buffer.from('to be deleted'));
  await afterDeleteStorage.deleteObject('test/delete-tracked.txt');
  afterDeleteStorage.clearContext();

  await new Promise(resolve => setTimeout(resolve, 100));

  const afterDeleteCalls = tracker.calls.filter(c => c.method === 'afterDelete');
  expect(afterDeleteCalls.length).toEqual(1);
  expect(afterDeleteCalls[0].context.operation).toEqual('delete');
});

// ============================================================================
// afterGet Hook Tests
// ============================================================================

tap.test('afterGet: should be called after reading object', async () => {
  const tracker = createTrackingHooks();

  const getStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await getStorage.init();

  // Store an object first
  getStorage.setContext({ protocol: 'rubygems' });
  await getStorage.putObject('test/read-test.txt', Buffer.from('read me'));

  // Clear calls to focus on the get
  tracker.calls.length = 0;

  // Read the object
  const data = await getStorage.getObject('test/read-test.txt');
  getStorage.clearContext();

  await new Promise(resolve => setTimeout(resolve, 100));

  expect(data).toBeTruthy();
  expect(data!.toString()).toEqual('read me');

  const afterGetCalls = tracker.calls.filter(c => c.method === 'afterGet');
  expect(afterGetCalls.length).toEqual(1);
  expect(afterGetCalls[0].context.operation).toEqual('get');
});

// ============================================================================
// Context Tests
// ============================================================================

tap.test('context: hooks should receive actor information', async () => {
  const tracker = createTrackingHooks();

  const actorStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await actorStorage.init();

  actorStorage.setContext({
    protocol: 'composer',
    actor: {
      userId: 'user-123',
      tokenId: 'token-abc',
      ip: '10.0.0.1',
      userAgent: 'composer/2.0',
      orgId: 'org-456',
      sessionId: 'session-xyz',
    },
  });

  await actorStorage.putObject('test/actor-test.txt', Buffer.from('actor test'));
  actorStorage.clearContext();

  const beforePutCall = tracker.calls.find(c => c.method === 'beforePut');
  expect(beforePutCall).toBeTruthy();
  expect(beforePutCall!.context.actor?.userId).toEqual('user-123');
  expect(beforePutCall!.context.actor?.tokenId).toEqual('token-abc');
  expect(beforePutCall!.context.actor?.ip).toEqual('10.0.0.1');
  expect(beforePutCall!.context.actor?.userAgent).toEqual('composer/2.0');
  expect(beforePutCall!.context.actor?.orgId).toEqual('org-456');
  expect(beforePutCall!.context.actor?.sessionId).toEqual('session-xyz');
});

tap.test('withContext: should set and clear context correctly', async () => {
  const tracker = createTrackingHooks();

  const contextStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await contextStorage.init();

  // Use withContext to ensure automatic cleanup
  await contextStorage.withContext(
    {
      protocol: 'oci',
      actor: { userId: 'oci-user' },
    },
    async () => {
      await contextStorage.putObject('test/with-context.txt', Buffer.from('context managed'));
    }
  );

  const call = tracker.calls.find(c => c.method === 'beforePut');
  expect(call).toBeTruthy();
  expect(call!.context.protocol).toEqual('oci');
  expect(call!.context.actor?.userId).toEqual('oci-user');
});

tap.test('withContext: should clear context even on error', async () => {
  const tracker = createTrackingHooks({ beforePutAllowed: false });

  const errorStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await errorStorage.init();

  let errorThrown = false;
  try {
    await errorStorage.withContext(
      {
        protocol: 'npm',
        actor: { userId: 'error-user' },
      },
      async () => {
        await errorStorage.putObject('test/error-context.txt', Buffer.from('will fail'));
      }
    );
  } catch {
    errorThrown = true;
  }

  expect(errorThrown).toBeTrue();

  // Verify context was cleared - next operation without context should work
  // (hooks won't be called without context)
  tracker.hooks.beforePut = async () => ({ allowed: true });
  await errorStorage.putObject('test/after-error.txt', Buffer.from('ok'));
});

// ============================================================================
// Graceful Degradation Tests
// ============================================================================

tap.test('graceful: hooks should not fail the operation if afterPut throws', async () => {
  const tracker = createTrackingHooks({ throwOnAfterPut: true });

  const gracefulStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await gracefulStorage.init();

  gracefulStorage.setContext({ protocol: 'npm' });

  // This should NOT throw even though afterPut throws
  let errorThrown = false;
  try {
    await gracefulStorage.putObject('test/graceful-afterput.txt', Buffer.from('should succeed'));
  } catch {
    errorThrown = true;
  }

  gracefulStorage.clearContext();

  expect(errorThrown).toBeFalse();

  // Verify object was stored
  const data = await gracefulStorage.getObject('test/graceful-afterput.txt');
  expect(data).toBeTruthy();
});

tap.test('graceful: hooks should not fail the operation if afterGet throws', async () => {
  const tracker = createTrackingHooks({ throwOnAfterGet: true });

  const gracefulGetStorage = new RegistryStorage(storageConfig, tracker.hooks);
  await gracefulGetStorage.init();

  // Store first
  gracefulGetStorage.setContext({ protocol: 'maven' });
  await gracefulGetStorage.putObject('test/graceful-afterget.txt', Buffer.from('read me gracefully'));

  // Read should succeed even though afterGet throws
  let errorThrown = false;
  try {
    const data = await gracefulGetStorage.getObject('test/graceful-afterget.txt');
    expect(data).toBeTruthy();
  } catch {
    errorThrown = true;
  }

  gracefulGetStorage.clearContext();

  expect(errorThrown).toBeFalse();
});

// ============================================================================
// Quota Hooks Tests
// ============================================================================

tap.test('quota: should block storage when quota exceeded', async () => {
  const maxSize = 100; // 100 bytes max
  const quotaTracker = createQuotaHooks(maxSize);

  const quotaStorage = new RegistryStorage(storageConfig, quotaTracker.hooks);
  await quotaStorage.init();

  quotaStorage.setContext({
    protocol: 'npm',
    actor: { userId: 'quota-user' },
  });

  // Store 50 bytes - should succeed
  await quotaStorage.putObject('test/quota-1.txt', Buffer.from('x'.repeat(50)));
  expect(quotaTracker.currentUsage.bytes).toEqual(50);

  // Try to store 60 more bytes - should fail (total would be 110)
  let errorThrown = false;
  try {
    await quotaStorage.putObject('test/quota-2.txt', Buffer.from('x'.repeat(60)));
  } catch (error) {
    errorThrown = true;
    expect((error as Error).message).toContain('Quota exceeded');
  }

  quotaStorage.clearContext();

  expect(errorThrown).toBeTrue();
  expect(quotaTracker.currentUsage.bytes).toEqual(50); // Still 50, not 110
});

tap.test('quota: should update usage after delete', async () => {
  const maxSize = 200;
  const quotaTracker = createQuotaHooks(maxSize);

  const quotaDelStorage = new RegistryStorage(storageConfig, quotaTracker.hooks);
  await quotaDelStorage.init();

  quotaDelStorage.setContext({
    protocol: 'npm',
    metadata: { size: 75 },
  });

  // Store and track
  await quotaDelStorage.putObject('test/quota-del.txt', Buffer.from('x'.repeat(75)));
  expect(quotaTracker.currentUsage.bytes).toEqual(75);

  // Delete and verify usage decreases
  await quotaDelStorage.deleteObject('test/quota-del.txt');

  await new Promise(resolve => setTimeout(resolve, 100));

  quotaDelStorage.clearContext();

  // Usage should be reduced (though exact value depends on metadata)
  expect(quotaTracker.currentUsage.bytes).toBeLessThanOrEqual(75);
});

// ============================================================================
// setHooks Tests
// ============================================================================

tap.test('setHooks: should allow setting hooks after construction', async () => {
  const lateStorage = new RegistryStorage(storageConfig);
  await lateStorage.init();

  // Initially no hooks
  await lateStorage.putObject('test/no-hooks.txt', Buffer.from('no hooks yet'));

  // Add hooks later
  const tracker = createTrackingHooks();
  lateStorage.setHooks(tracker.hooks);

  lateStorage.setContext({ protocol: 'npm' });
  await lateStorage.putObject('test/with-late-hooks.txt', Buffer.from('now with hooks'));
  lateStorage.clearContext();

  const beforePutCalls = tracker.calls.filter(c => c.method === 'beforePut');
  expect(beforePutCalls.length).toEqual(1);
});

// ============================================================================
// Cleanup
// ============================================================================

tap.test('cleanup: should clean up test bucket', async () => {
  if (storage) {
    // Clean up test objects
    const prefixes = ['test/'];
    for (const prefix of prefixes) {
      try {
        const objects = await storage.listObjects(prefix);
        for (const obj of objects) {
          await storage.deleteObject(obj);
        }
      } catch {
        // Ignore cleanup errors
      }
    }
  }
});

export default tap.start();