import { randomBytes } from 'crypto';
import type { IHookFunctions, IWebhookFunctions } from 'n8n-workflow';

import { CalTrigger } from '../CalTrigger.node';
import { verifySignature } from '../CalTriggerHelpers';
import { calApiRequest } from '../GenericFunctions';

jest.mock('../GenericFunctions');
jest.mock('../CalTriggerHelpers');
jest.mock('crypto', () => ({
	...jest.requireActual('crypto'),
	randomBytes: jest.fn(),
}));

describe('CalTrigger', () => {
	let trigger: CalTrigger;
	let mockHookFunctions: Pick<
		jest.Mocked<IHookFunctions>,
		'getNodeWebhookUrl' | 'getNodeParameter' | 'getWorkflowStaticData' | 'helpers'
	>;
	let mockWebhookFunctions: Pick<
		jest.Mocked<IWebhookFunctions>,
		'getRequestObject' | 'getResponseObject' | 'helpers'
	>;

	beforeEach(() => {
		jest.clearAllMocks();
		trigger = new CalTrigger();

		mockHookFunctions = {
			getNodeWebhookUrl: jest.fn(),
			getNodeParameter: jest.fn(),
			getWorkflowStaticData: jest.fn(),
			helpers: {} as any,
		};

		mockWebhookFunctions = {
			getRequestObject: jest.fn(),
			getResponseObject: jest.fn(),
			helpers: {
				returnJsonArray: jest.fn((data) => data),
			} as any,
		};
	});

	describe('webhookMethods.default.create', () => {
		it('should create webhook with auto-generated secret on v2', async () => {
			const subscriberUrl = 'https://example.com/webhook';
			const events = ['BOOKING_CREATED'];
			const webhookSecret = 'a'.repeat(64);
			const webhookId = 'webhook-123';

			mockHookFunctions.getNodeWebhookUrl.mockReturnValue(subscriberUrl);
			mockHookFunctions.getNodeParameter.mockImplementation((name) => {
				if (name === 'version') return 2;
				if (name === 'events') return events;
				if (name === 'options') return {};
				return undefined;
			});

			const webhookData: any = {};
			mockHookFunctions.getWorkflowStaticData.mockReturnValue(webhookData);

			(randomBytes as jest.Mock).mockReturnValue({
				toString: jest.fn().mockReturnValue(webhookSecret),
			});
			(calApiRequest as jest.Mock).mockResolvedValue({
				webhook: { id: webhookId },
			});

			const result = await trigger.webhookMethods!.default.create.call(
				mockHookFunctions as unknown as IHookFunctions,
			);

			expect(result).toBe(true);
			expect(randomBytes).toHaveBeenCalledWith(32);
			expect(calApiRequest).toHaveBeenCalledWith('POST', '/webhooks', {
				subscriberUrl,
				eventTriggers: events,
				active: true,
				secret: webhookSecret,
			});
			expect(webhookData.webhookId).toBe(webhookId);
			expect(webhookData.webhookSecret).toBe(webhookSecret);
		});

		it('should create webhook with auto-generated secret on v1', async () => {
			const subscriberUrl = 'https://example.com/webhook';
			const events = ['BOOKING_CREATED'];
			const webhookSecret = 'b'.repeat(64);
			const webhookId = 'webhook-321';

			mockHookFunctions.getNodeWebhookUrl.mockReturnValue(subscriberUrl);
			mockHookFunctions.getNodeParameter.mockImplementation((name) => {
				if (name === 'version') return 1;
				if (name === 'events') return events;
				if (name === 'options') return {};
				return undefined;
			});

			const webhookData: any = {};
			mockHookFunctions.getWorkflowStaticData.mockReturnValue(webhookData);

			(randomBytes as jest.Mock).mockReturnValue({
				toString: jest.fn().mockReturnValue(webhookSecret),
			});
			(calApiRequest as jest.Mock).mockResolvedValue({
				webhook: { id: webhookId },
			});

			const result = await trigger.webhookMethods!.default.create.call(
				mockHookFunctions as unknown as IHookFunctions,
			);

			expect(result).toBe(true);
			expect(calApiRequest).toHaveBeenCalledWith('POST', '/hooks', {
				subscriberUrl,
				eventTriggers: events,
				active: true,
				secret: webhookSecret,
			});
			expect(webhookData.webhookId).toBe(webhookId);
			expect(webhookData.webhookSecret).toBe(webhookSecret);
		});

		it('should return false when API does not return a webhook id', async () => {
			mockHookFunctions.getNodeWebhookUrl.mockReturnValue('https://example.com/webhook');
			mockHookFunctions.getNodeParameter.mockImplementation((name) => {
				if (name === 'version') return 2;
				if (name === 'events') return ['BOOKING_CREATED'];
				if (name === 'options') return {};
				return undefined;
			});

			const webhookData: any = {};
			mockHookFunctions.getWorkflowStaticData.mockReturnValue(webhookData);

			(randomBytes as jest.Mock).mockReturnValue({
				toString: jest.fn().mockReturnValue('secret'),
			});
			(calApiRequest as jest.Mock).mockResolvedValue({ webhook: {} });

			const result = await trigger.webhookMethods!.default.create.call(
				mockHookFunctions as unknown as IHookFunctions,
			);

			expect(result).toBe(false);
			expect(webhookData.webhookId).toBeUndefined();
			expect(webhookData.webhookSecret).toBeUndefined();
		});
	});

	describe('webhookMethods.default.delete', () => {
		it('should delete webhook and clean up secret', async () => {
			const webhookId = 'webhook-123';

			mockHookFunctions.getNodeParameter.mockReturnValue(2);

			const webhookData: any = {
				webhookId,
				webhookSecret: 'test-secret',
			};
			mockHookFunctions.getWorkflowStaticData.mockReturnValue(webhookData);

			(calApiRequest as jest.Mock).mockResolvedValue({});

			const result = await trigger.webhookMethods!.default.delete.call(
				mockHookFunctions as unknown as IHookFunctions,
			);

			expect(result).toBe(true);
			expect(calApiRequest).toHaveBeenCalledWith('DELETE', `/webhooks/${webhookId}`);
			expect(webhookData.webhookId).toBeUndefined();
			expect(webhookData.webhookSecret).toBeUndefined();
		});

		it('should return true when no webhookId is set', async () => {
			mockHookFunctions.getNodeParameter.mockReturnValue(2);
			mockHookFunctions.getWorkflowStaticData.mockReturnValue({});

			const result = await trigger.webhookMethods!.default.delete.call(
				mockHookFunctions as unknown as IHookFunctions,
			);

			expect(result).toBe(true);
			expect(calApiRequest).not.toHaveBeenCalled();
		});
	});

	describe('webhook', () => {
		it('should return 401 when signature verification fails', async () => {
			const mockResponse = {
				status: jest.fn().mockReturnThis(),
				send: jest.fn().mockReturnThis(),
				end: jest.fn(),
			};

			(verifySignature as jest.Mock).mockReturnValue(false);
			mockWebhookFunctions.getResponseObject.mockReturnValue(mockResponse as any);

			const result = await trigger.webhook.call(
				mockWebhookFunctions as unknown as IWebhookFunctions,
			);

			expect(verifySignature).toHaveBeenCalled();
			expect(mockResponse.status).toHaveBeenCalledWith(401);
			expect(mockResponse.send).toHaveBeenCalledWith('Unauthorized');
			expect(result).toEqual({
				noWebhookResponse: true,
			});
		});

		it('should process webhook when signature verification passes', async () => {
			const requestBody = {
				triggerEvent: 'BOOKING_CREATED',
				createdAt: '2024-01-01T00:00:00Z',
				payload: { bookingId: 'abc-123' },
			};

			(verifySignature as jest.Mock).mockReturnValue(true);
			mockWebhookFunctions.getRequestObject.mockReturnValue({
				body: requestBody,
			} as any);

			const result = await trigger.webhook.call(
				mockWebhookFunctions as unknown as IWebhookFunctions,
			);

			expect(verifySignature).toHaveBeenCalled();
			expect(result.workflowData).toEqual([
				{
					triggerEvent: 'BOOKING_CREATED',
					createdAt: '2024-01-01T00:00:00Z',
					bookingId: 'abc-123',
				},
			]);
		});
	});
});