import jwt from 'jsonwebtoken';
import {
	REDACTED,
	redactedHeaders,
	UnexpectedError,
	type IWebhookFunctions,
	type INodeExecutionData,
	type IDataObject,
	type MultiPartFormData,
	type INode,
	type ICredentialDataDecryptedObject,
} from 'n8n-workflow';

import type { WebhookParameters } from '../utils';
import {
	checkResponseModeConfiguration,
	configuredOutputs,
	generateBasicAuthToken,
	generateFormPostBasicAuthToken,
	getResponseCode,
	getResponseData,
	handleFormData,
	isIpAllowed,
	setupOutputConnection,
	validateWebhookAuthentication,
} from '../utils';
import { mock } from 'vitest-mock-extended';
import type { Mock } from 'vitest';

vi.mock('jsonwebtoken', () => ({
	default: { verify: vi.fn() },
}));

describe('Webhook Utils', () => {
	describe('getResponseCode', () => {
		it('should return the response code if it exists', () => {
			const parameters: WebhookParameters = {
				responseCode: 404,
				httpMethod: '',
				responseMode: '',
				responseData: '',
			};
			const responseCode = getResponseCode(parameters);
			expect(responseCode).toBe(404);
		});

		it('should return the custom response code if it exists', () => {
			const parameters: WebhookParameters = {
				options: {
					responseCode: {
						values: {
							responseCode: 200,
							customCode: 201,
						},
					},
				},
				httpMethod: '',
				responseMode: '',
				responseData: '',
			};
			const responseCode = getResponseCode(parameters);
			expect(responseCode).toBe(201);
		});

		it('should return the default response code if no response code is provided', () => {
			const parameters: WebhookParameters = {
				httpMethod: '',
				responseMode: '',
				responseData: '',
			};
			const responseCode = getResponseCode(parameters);
			expect(responseCode).toBe(200);
		});
	});

	describe('getResponseData', () => {
		it('should return the response data if it exists', () => {
			const parameters: WebhookParameters = {
				responseData: 'Hello World',
				httpMethod: '',
				responseMode: '',
			};
			const responseData = getResponseData(parameters);
			expect(responseData).toBe('Hello World');
		});

		it('should return the options response data if response mode is "onReceived"', () => {
			const parameters: WebhookParameters = {
				responseMode: 'onReceived',
				options: {
					responseData: 'Hello World',
				},
				httpMethod: '',
				responseData: '',
			};
			const responseData = getResponseData(parameters);
			expect(responseData).toBe('Hello World');
		});

		it('should return "noData" if options noResponseBody is true', () => {
			const parameters: WebhookParameters = {
				responseMode: 'onReceived',
				options: {
					noResponseBody: true,
				},
				httpMethod: '',
				responseData: '',
			};
			const responseData = getResponseData(parameters);
			expect(responseData).toBe('noData');
		});

		it('should return undefined if no response data is provided', () => {
			const parameters: WebhookParameters = {
				responseMode: 'onReceived',
				httpMethod: '',
				responseData: '',
			};
			const responseData = getResponseData(parameters);
			expect(responseData).toBeUndefined();
		});
	});

	describe('configuredOutputs', () => {
		it('should return an array with a single output if httpMethod is not an array', () => {
			const parameters: WebhookParameters = {
				httpMethod: 'GET',
				responseMode: '',
				responseData: '',
			};
			const outputs = configuredOutputs(parameters);
			expect(outputs).toEqual([
				{
					type: 'main',
					displayName: 'GET',
				},
			]);
		});

		it('should return an array of outputs if httpMethod is an array', () => {
			const parameters: WebhookParameters = {
				httpMethod: ['GET', 'POST'],
				responseMode: '',
				responseData: '',
			};
			const outputs = configuredOutputs(parameters);
			expect(outputs).toEqual([
				{
					type: 'main',
					displayName: 'GET',
				},
				{
					type: 'main',
					displayName: 'POST',
				},
			]);
		});
	});

	describe('setupOutputConnection', () => {
		it('should return a function that sets the webhookUrl and executionMode in the output data', () => {
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('GET'),
				getNodeWebhookUrl: vi.fn().mockReturnValue('https://example.com/webhook/'),
				getMode: vi.fn().mockReturnValue('manual'),
			};
			const method = 'GET';
			const additionalData = {
				jwtPayload: {
					userId: '123',
				},
			};
			const outputData = {
				json: {},
			};
			const setupOutput = setupOutputConnection(ctx as IWebhookFunctions, method, additionalData);
			const result = setupOutput(outputData);
			expect(result).toEqual([
				[
					{
						json: {
							webhookUrl: 'https://example.com/webhook-test/',
							executionMode: 'test',
							jwtPayload: { userId: '123' },
						},
					},
				],
			]);
		});

		it('should return a function that sets the webhookUrl and executionMode in the output data for multiple methods', () => {
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue(['GET', 'POST']),
				getNodeWebhookUrl: vi.fn().mockReturnValue('https://example.com/webhook/'),
				getMode: vi.fn().mockReturnValue('manual'),
			};
			const method = 'POST';
			const additionalData = {
				jwtPayload: {
					userId: '123',
				},
			};
			const outputData = {
				json: {},
			};
			const setupOutput = setupOutputConnection(ctx as IWebhookFunctions, method, additionalData);
			const result = setupOutput(outputData);
			expect(result).toEqual([
				[],
				[
					{
						json: {
							webhookUrl: 'https://example.com/webhook-test/',
							executionMode: 'test',
							jwtPayload: { userId: '123' },
						},
					},
				],
			]);
		});
	});

	describe('isIpAllowed', () => {
		it('should return true if allowlist is undefined', () => {
			expect(isIpAllowed(undefined, ['192.168.1.1'], '192.168.1.1')).toBe(true);
		});

		it('should return true if allowlist is an empty string', () => {
			expect(isIpAllowed('', ['192.168.1.1'], '192.168.1.1')).toBe(true);
		});

		it('should return true if ip is in the allowlist', () => {
			expect(isIpAllowed('192.168.1.1', ['192.168.1.2'], '192.168.1.1')).toBe(true);
		});

		it('should return true if any ip in ips is in the allowlist', () => {
			expect(isIpAllowed('192.168.1.1', ['192.168.1.1', '192.168.1.2'])).toBe(true);
		});

		it('should return false if ip and ips are not in the allowlist', () => {
			expect(isIpAllowed('192.168.1.3', ['192.168.1.1', '192.168.1.2'], '192.168.1.4')).toBe(false);
		});

		it('should return true if any ip in ips matches any address in the allowlist array', () => {
			expect(isIpAllowed(['192.168.1.1', '192.168.1.2'], ['192.168.1.2', '192.168.1.3'])).toBe(
				true,
			);
		});

		it('should return true if ip matches any address in the allowlist array', () => {
			expect(isIpAllowed(['192.168.1.1', '192.168.1.2'], ['192.168.1.3'], '192.168.1.2')).toBe(
				true,
			);
		});

		it('should return false if ip and ips do not match any address in the allowlist array', () => {
			expect(
				isIpAllowed(['192.168.1.4', '192.168.1.5'], ['192.168.1.1', '192.168.1.2'], '192.168.1.3'),
			).toBe(false);
		});

		it('CAT-1846: should use CIDR matching to determine if ip is in the allowlist', () => {
			expect(isIpAllowed('192.168.1.3', [], '192.168.1.30')).toBe(false);
		});

		it('should handle comma-separated allowlist string', () => {
			expect(isIpAllowed('192.168.1.1, 192.168.1.2', ['192.168.1.3'], '192.168.1.2')).toBe(true);
		});

		it('should trim whitespace in comma-separated allowlist string', () => {
			expect(isIpAllowed(' 192.168.1.1 , 192.168.1.2 ', ['192.168.1.3'], '192.168.1.2')).toBe(true);
		});

		it('should support IPv4 CIDR notation', () => {
			expect(isIpAllowed('192.168.1.0/24', [], '192.168.1.50')).toBe(true);
			expect(isIpAllowed('192.168.1.0/24', [], '192.168.1.255')).toBe(true);
			expect(isIpAllowed('192.168.1.0/24', [], '192.168.2.1')).toBe(false);
		});

		it('should support IPv6 CIDR notation', () => {
			expect(isIpAllowed('2001:db8::/32', [], '2001:db8::1')).toBe(true);
			expect(isIpAllowed('2001:db8::/32', [], '2001:db9::1')).toBe(false);
		});

		it('should support mixed single IPs and CIDR ranges', () => {
			expect(isIpAllowed('127.0.0.1, 192.168.0.0/16', [], '192.168.100.50')).toBe(true);
			expect(isIpAllowed('127.0.0.1, 192.168.0.0/16', [], '10.0.0.1')).toBe(false);
			expect(isIpAllowed('127.0.0.1, 192.168.0.0/16', [], '127.0.0.1')).toBe(true);
		});

		it('should handle invalid CIDR notation gracefully', () => {
			expect(isIpAllowed('192.168.1.0/abc', [], '192.168.1.1')).toBe(false);
			expect(isIpAllowed('192.168.1.0/99', [], '192.168.1.1')).toBe(false);
			expect(isIpAllowed('invalid/24', [], '192.168.1.1')).toBe(false);
		});

		it('should handle /32 and /128 CIDR (single IP)', () => {
			expect(isIpAllowed('192.168.1.1/32', [], '192.168.1.1')).toBe(true);
			expect(isIpAllowed('192.168.1.1/32', [], '192.168.1.2')).toBe(false);
			expect(isIpAllowed('::1/128', [], '::1')).toBe(true);
		});
	});

	describe('checkResponseModeConfiguration', () => {
		it('should throw an error if response mode is "responseNode" but no Respond to Webhook node is found', () => {
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('responseNode'),
				getChildNodes: vi.fn().mockReturnValue([]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('No Respond to Webhook node found in the workflow');
		});

		it('should throw an error if response mode is not "responseNode" but a Respond to Webhook node is found', () => {
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([{ name: 'Respond', type: 'n8n-nodes-base.respondToWebhook' }]),
				getParentNodes: vi.fn().mockReturnValue([]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('Unused Respond to Webhook node found in the workflow');
		});

		it('should not throw if the Respond to Webhook node belongs to a downstream Wait node resuming on webhook', () => {
			const waitNode = {
				name: 'Wait',
				type: 'n8n-nodes-base.wait',
				disabled: false,
				parameters: { resume: 'webhook', responseMode: 'responseNode' },
			};
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([
						{ name: 'Request2', type: 'n8n-nodes-base.httpRequest' },
						waitNode,
						{ name: 'Request', type: 'n8n-nodes-base.httpRequest' },
						{ name: 'Respond success', type: 'n8n-nodes-base.respondToWebhook' },
					]),
				getParentNodes: vi
					.fn()
					.mockReturnValue([
						{ name: 'Request', type: 'n8n-nodes-base.httpRequest' },
						waitNode,
						{ name: 'Request2', type: 'n8n-nodes-base.httpRequest' },
						{ name: 'Webhook', type: 'n8n-nodes-base.webhook' },
					]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).not.toThrow();
		});

		it('should throw if the Wait node upstream of the Respond to Webhook node does not resume on webhook', () => {
			const waitNode = {
				name: 'Wait',
				type: 'n8n-nodes-base.wait',
				disabled: false,
				parameters: { resume: 'timeInterval' },
			};
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([
						waitNode,
						{ name: 'Respond', type: 'n8n-nodes-base.respondToWebhook' },
					]),
				getParentNodes: vi
					.fn()
					.mockReturnValue([waitNode, { name: 'Webhook', type: 'n8n-nodes-base.webhook' }]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('Unused Respond to Webhook node found in the workflow');
		});

		it('should throw if the webhook-resuming Wait node upstream of the Respond to Webhook node does not respond via Respond to Webhook node', () => {
			const waitNode = {
				name: 'Wait',
				type: 'n8n-nodes-base.wait',
				disabled: false,
				parameters: { resume: 'webhook', responseMode: 'onReceived' },
			};
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([
						waitNode,
						{ name: 'Respond', type: 'n8n-nodes-base.respondToWebhook' },
					]),
				getParentNodes: vi
					.fn()
					.mockReturnValue([waitNode, { name: 'Webhook', type: 'n8n-nodes-base.webhook' }]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('Unused Respond to Webhook node found in the workflow');
		});

		it('should throw if the webhook-resuming Wait node upstream of the Respond to Webhook node responds with the last node', () => {
			const waitNode = {
				name: 'Wait',
				type: 'n8n-nodes-base.wait',
				disabled: false,
				parameters: { resume: 'webhook', responseMode: 'lastNode' },
			};
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([
						waitNode,
						{ name: 'Respond', type: 'n8n-nodes-base.respondToWebhook' },
					]),
				getParentNodes: vi
					.fn()
					.mockReturnValue([waitNode, { name: 'Webhook', type: 'n8n-nodes-base.webhook' }]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('Unused Respond to Webhook node found in the workflow');
		});

		it('should throw if the webhook-resuming Wait node upstream of the Respond to Webhook node is disabled', () => {
			const waitNode = {
				name: 'Wait',
				type: 'n8n-nodes-base.wait',
				disabled: true,
				parameters: { resume: 'webhook', responseMode: 'responseNode' },
			};
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([
						waitNode,
						{ name: 'Respond', type: 'n8n-nodes-base.respondToWebhook' },
					]),
				getParentNodes: vi
					.fn()
					.mockReturnValue([waitNode, { name: 'Webhook', type: 'n8n-nodes-base.webhook' }]),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('Unused Respond to Webhook node found in the workflow');
		});

		it('should throw if any Respond to Webhook node is not owned by a downstream Wait node', () => {
			const waitNode = {
				name: 'Wait',
				type: 'n8n-nodes-base.wait',
				disabled: false,
				parameters: { resume: 'webhook', responseMode: 'responseNode' },
			};
			const context: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('onReceived'),
				getChildNodes: vi
					.fn()
					.mockReturnValue([
						waitNode,
						{ name: 'Respond owned', type: 'n8n-nodes-base.respondToWebhook' },
						{ name: 'Respond direct', type: 'n8n-nodes-base.respondToWebhook' },
					]),
				getParentNodes: vi.fn().mockImplementation((nodeName: string) => {
					if (nodeName === 'Respond owned') {
						return [waitNode, { name: 'Webhook', type: 'n8n-nodes-base.webhook' }];
					}
					return [{ name: 'Webhook', type: 'n8n-nodes-base.webhook' }];
				}),
				getNode: vi.fn().mockReturnValue({ name: 'Webhook' }),
			};
			expect(() => {
				checkResponseModeConfiguration(context as IWebhookFunctions);
			}).toThrowError('Unused Respond to Webhook node found in the workflow');
		});
	});

	describe('validateWebhookAuthentication', () => {
		it('should return early if authentication is "none"', async () => {
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('none'),
			};
			const authPropertyName = 'authentication';
			const result = await validateWebhookAuthentication(
				ctx as IWebhookFunctions,
				authPropertyName,
			);
			expect(result).toBeUndefined();
		});

		it('should throw an error if basicAuth is enabled but no authentication data is defined on the node', async () => {
			const headers = {
				authorization: 'Basic some-token',
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('basicAuth'),
				getCredentials: vi.fn().mockRejectedValue(new Error()),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('No authentication data defined on node!');
		});

		it('should throw an error if basicAuth is enabled but the provided authentication data is wrong', async () => {
			const headers = {
				authorization: 'Basic some-token',
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('basicAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					user: 'admin',
					password: 'password',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('Authorization is required!');
		});

		it('should return unauthorized if basicAuth credentials do not match', async () => {
			const headers = {
				authorization: `Basic ${Buffer.from('admin:wrong-password').toString('base64')}`,
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('basicAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					user: 'admin',
					password: 'password',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';

			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toMatchObject({
				responseCode: 401,
				message: 'Authentication data is wrong!',
			});
		});

		it('should successfully pass if basicAuth is enabled and provided basic auth data is correct', async () => {
			const headers = {
				authorization: `Basic ${Buffer.from('admin:password').toString('base64')}`,
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('basicAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					user: 'admin',
					password: 'password',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';
			await validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName);
		});

		it('should still return forbidden if form auth token does not match', async () => {
			const node = {
				id: 'node-789',
				webhookId: 'webhook-456',
				type: 'n8n-nodes-base.formTrigger',
			} as INode;
			const credentials = {
				user: 'admin',
				password: 'password',
			};
			const headers = {
				'x-auth-token': 'wrong-token',
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNode: vi.fn().mockReturnValue(node),
				getCredentials: vi.fn().mockResolvedValue(credentials),
				getNodeParameter: vi.fn().mockReturnValue('basicAuth'),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';

			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toMatchObject({
				responseCode: 403,
				message: 'Authorization data is wrong!',
			});
		});

		it('should successfully pass if basicAuth is enabled and provided auth token data is correct', async () => {
			const node = {
				id: 'node-789',
				webhookId: 'webhook-456',
				type: 'n8n-nodes-base.formTrigger',
			} as INode;
			const credentials = {
				user: (Math.random() * 10000).toString(),
				password: (Math.random() * 10000).toString(),
			};
			const headers = {
				'x-auth-token': generateBasicAuthToken(node, credentials),
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNode: vi.fn().mockReturnValue(node),
				getCredentials: vi.fn().mockResolvedValue(credentials),
				getNodeParameter: vi.fn().mockReturnValue('basicAuth'),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';
			await validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName);
		});

		it('should throw an error if headerAuth is enabled but no authentication data is defined on the node', async () => {
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('headerAuth'),
				getCredentials: vi
					.fn()
					.mockRejectedValue(new Error('No authentication data defined on node!')),
				getRequestObject: vi.fn().mockReturnValue({
					headers: {},
				}),
				getHeaderData: vi.fn().mockReturnValue({}),
			};
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('No authentication data defined on node!');
		});

		it('should throw an error if headerAuth is enabled but the provided authentication data is wrong', async () => {
			const headers = {
				authorization: 'Bearer invalid-token',
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('headerAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					name: 'Authorization',
					value: 'Bearer token',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('Authorization data is wrong!');
		});

		it('should throw an error if jwtAuth is enabled but no authentication data is defined on the node', async () => {
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('jwtAuth'),
				getCredentials: vi
					.fn()
					.mockRejectedValue(new Error('No authentication data defined on node!')),
				getRequestObject: vi.fn().mockReturnValue({}),
				getHeaderData: vi.fn().mockReturnValue({}),
			};
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('No authentication data defined on node!');
		});

		it('should throw an error if jwtAuth is enabled but no token is provided', async () => {
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('jwtAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					keyType: 'passphrase',
					publicKey: '',
					secret: 'secret',
					algorithm: 'HS256',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers: {},
				}),
				getHeaderData: vi.fn().mockReturnValue({}),
			};
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('No token provided');
		});

		it('should throw an error if jwtAuth is enabled but the provided token is invalid', async () => {
			const headers = {
				authorization: 'Bearer invalid-token',
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('jwtAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					keyType: 'passphrase',
					publicKey: '',
					secret: 'secret',
					algorithm: 'HS256',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			(jwt.verify as Mock).mockImplementationOnce(() => {
				throw new UnexpectedError('jwt malformed');
			});
			const authPropertyName = 'authentication';
			await expect(
				validateWebhookAuthentication(ctx as IWebhookFunctions, authPropertyName),
			).rejects.toThrowError('jwt malformed');
		});

		it('should return the decoded JWT payload if jwtAuth is enabled and the token is valid', async () => {
			const decodedPayload = {
				sub: '1234567890',
				name: 'John Doe',
				iat: 1516239022,
			};
			(jwt.verify as Mock).mockReturnValue(decodedPayload);
			const headers = {
				authorization:
					'Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c',
			};
			const ctx: Partial<IWebhookFunctions> = {
				getNodeParameter: vi.fn().mockReturnValue('jwtAuth'),
				getCredentials: vi.fn().mockResolvedValue({
					keyType: 'passphrase',
					publicKey: '',
					secret: 'secret',
					algorithm: 'HS256',
				}),
				getRequestObject: vi.fn().mockReturnValue({
					headers,
				}),
				getHeaderData: vi.fn().mockReturnValue(headers),
			};
			const authPropertyName = 'authentication';

			const result = await validateWebhookAuthentication(
				ctx as IWebhookFunctions,
				authPropertyName,
			);
			expect(result).toEqual(decodedPayload);
		});

		describe('records the headers it authenticated with', () => {
			const setup = (
				authentication: string,
				headers: Record<string, string | undefined>,
				credentials: IDataObject,
				node?: INode,
			) => {
				const request = { headers };
				const ctx: Partial<IWebhookFunctions> = {
					getNode: vi.fn().mockReturnValue(node ?? ({} as INode)),
					getNodeParameter: vi.fn().mockReturnValue(authentication),
					getCredentials: vi.fn().mockResolvedValue(credentials),
					getRequestObject: vi.fn().mockReturnValue(request),
					getHeaderData: vi.fn().mockReturnValue(headers),
				};
				return { ctx: ctx as IWebhookFunctions, request };
			};

			it('leaves the request alone', async () => {
				const authorization = `Basic ${Buffer.from('admin:password').toString('base64')}`;
				const { ctx, request } = setup(
					'basicAuth',
					{ authorization, 'x-tenant-id': 'acme' },
					{ user: 'admin', password: 'password' },
				);

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(request.headers).toEqual({ authorization, 'x-tenant-id': 'acme' });
			});

			it('records the basic auth header, keeping the rest', async () => {
				const { ctx, request } = setup(
					'basicAuth',
					{
						authorization: `Basic ${Buffer.from('admin:password').toString('base64')}`,
						'x-tenant-id': 'acme',
					},
					{ user: 'admin', password: 'password' },
				);

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(redactedHeaders(request)).toEqual({
					authorization: REDACTED,
					'x-tenant-id': 'acme',
				});
			});

			it('records only the carrier that authenticated', async () => {
				const { ctx, request } = setup(
					'basicAuth',
					{
						authorization: `Basic ${Buffer.from('admin:password').toString('base64')}`,
						'x-auth-token': 'callers-own-token',
					},
					{ user: 'admin', password: 'password' },
				);

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(redactedHeaders(request)).toEqual({
					authorization: REDACTED,
					'x-auth-token': 'callers-own-token',
				});
			});

			it('records the form auth token accepted in place of basic auth', async () => {
				const node = { id: 'node-789', webhookId: 'webhook-456' } as INode;
				const credentials = { user: 'admin', password: 'password' };
				const { ctx, request } = setup(
					'basicAuth',
					{ 'x-auth-token': generateBasicAuthToken(node, credentials) },
					credentials,
					node,
				);

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(redactedHeaders(request)).toEqual({ 'x-auth-token': REDACTED });
			});

			it('records the bearer token header', async () => {
				const { ctx, request } = setup(
					'bearerAuth',
					{ authorization: 'Bearer secret-token', accept: 'application/json' },
					{ token: 'secret-token' },
				);

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(redactedHeaders(request)).toEqual({
					authorization: REDACTED,
					accept: 'application/json',
				});
			});

			it('records the custom header the credential names', async () => {
				const { ctx, request } = setup(
					'headerAuth',
					{ test: 'secret-value', 'x-tenant-id': 'acme' },
					{ name: 'test', value: 'secret-value' },
				);

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(redactedHeaders(request)).toEqual({ test: REDACTED, 'x-tenant-id': 'acme' });
			});

			it('records the JWT header while still returning its payload', async () => {
				const decodedPayload = { sub: '1234567890' };
				(jwt.verify as Mock).mockReturnValue(decodedPayload);
				const { ctx, request } = setup(
					'jwtAuth',
					{ authorization: 'Bearer some.jwt.token' },
					{ keyType: 'passphrase', publicKey: '', secret: 'secret', algorithm: 'HS256' },
				);

				const result = await validateWebhookAuthentication(ctx, 'authentication');

				expect(result).toEqual(decodedPayload);
				expect(redactedHeaders(request)).toEqual({ authorization: REDACTED });
			});

			it('records nothing when authentication is "none"', async () => {
				const { ctx, request } = setup('none', { authorization: 'Bearer caller-token' }, {});

				await validateWebhookAuthentication(ctx, 'authentication');

				expect(redactedHeaders(request)).toEqual({ authorization: 'Bearer caller-token' });
			});
		});
	});

	describe('handleFormData', () => {
		const mockCopyBinaryFile = vi.fn().mockResolvedValue({
			data: 'binary-data',
			mimeType: 'text/plain',
		});

		const createMockContext = (options: IDataObject = {}): IWebhookFunctions =>
			({
				getRequestObject: vi.fn().mockReturnValue({
					contentType: 'multipart/form-data',
					headers: { 'content-type': 'multipart/form-data' },
					params: {},
					query: {},
					body: {
						data: { field1: 'value1' },
						files: {},
					},
				}),
				getNodeParameter: vi.fn().mockReturnValue(options),
				nodeHelpers: {
					copyBinaryFile: mockCopyBinaryFile,
				},
			}) as any;

		const mockPrepareOutput = vi.fn().mockImplementation((data: INodeExecutionData) => [[data]]);

		beforeEach(() => {
			vi.clearAllMocks();
		});

		it('should use default binary property name for empty filename', async () => {
			const context = createMockContext();
			const req = context.getRequestObject() as MultiPartFormData.Request;
			req.body.files = {
				'': {
					filepath: '/tmp/file1',
					originalFilename: '',
					newFilename: 'temp1',
					mimetype: 'text/plain',
				},
			};

			const result = await handleFormData(context, mockPrepareOutput);

			expect(result.workflowData[0][0].binary).toEqual({
				data0: expect.any(Object),
			});
		});

		it('should use default binary property name for whitespace-only filename', async () => {
			const context = createMockContext();
			const req = context.getRequestObject() as MultiPartFormData.Request;
			req.body.files = {
				'   ': {
					filepath: '/tmp/file1',
					originalFilename: '   ',
					newFilename: 'temp1',
					mimetype: 'text/plain',
				},
			};

			const result = await handleFormData(context, mockPrepareOutput);

			expect(result.workflowData[0][0].binary).toEqual({
				data0: expect.any(Object),
			});
		});

		it('should handle multiple files with empty/whitespace filenames', async () => {
			const context = createMockContext();
			const req = context.getRequestObject() as MultiPartFormData.Request;
			req.body.files = {
				'': [
					{
						filepath: '/tmp/file1',
						originalFilename: '',
						newFilename: 'temp1',
						mimetype: 'text/plain',
					},
					{
						filepath: '/tmp/file2',
						originalFilename: '',
						newFilename: 'temp2',
						mimetype: 'text/plain',
					},
				],
				'  ': [
					{
						filepath: '/tmp/file3',
						originalFilename: '  ',
						newFilename: 'temp3',
						mimetype: 'image/png',
					},
				],
			};

			const result = await handleFormData(context, mockPrepareOutput);

			expect(result.workflowData[0][0].binary).toEqual({
				data0: expect.any(Object),
				data1: expect.any(Object),
				data2: expect.any(Object),
			});
		});

		it('should use custom binaryPropertyName with count for empty filenames', async () => {
			const context = createMockContext({ binaryPropertyName: 'myFile' });
			const req = context.getRequestObject() as MultiPartFormData.Request;
			req.body.files = {
				'': {
					filepath: '/tmp/file1',
					originalFilename: '',
					newFilename: 'temp1',
					mimetype: 'text/plain',
				},
			};

			const result = await handleFormData(context, mockPrepareOutput);

			expect(result.workflowData[0][0].binary).toEqual({
				myFile0: expect.any(Object),
			});
		});

		it('should preserve valid filename without using default naming', async () => {
			const context = createMockContext();
			const req = context.getRequestObject() as MultiPartFormData.Request;
			req.body.files = {
				validFile: {
					filepath: '/tmp/file1',
					originalFilename: 'validFile.txt',
					newFilename: 'temp1',
					mimetype: 'text/plain',
				},
			};

			const result = await handleFormData(context, mockPrepareOutput);

			expect(result.workflowData[0][0].binary).toEqual({
				validFile: expect.any(Object),
			});
		});
	});
});

describe('Auth token generation', () => {
	describe('generateFormPostBasicAuthToken', () => {
		let webhookFunctions: ReturnType<typeof mock<IWebhookFunctions>>;

		beforeEach(() => {
			webhookFunctions = mock<IWebhookFunctions>();
		});

		it('should use authentication property for Form Trigger nodes', async () => {
			webhookFunctions.getNode.mockReturnValue({
				type: 'n8n-nodes-base.formTrigger',
			} as INode);
			webhookFunctions.getNodeParameter.mockReturnValue('basicAuth');

			await generateFormPostBasicAuthToken(webhookFunctions, 'authentication');

			expect(webhookFunctions.getNodeParameter).toHaveBeenCalledWith('authentication', 'none');
		});

		it('should use passed authentication key', async () => {
			webhookFunctions.getNode.mockReturnValue({
				type: 'n8n-nodes-base.wait',
			} as INode);
			webhookFunctions.getNodeParameter.mockReturnValue('basicAuth');

			await generateFormPostBasicAuthToken(webhookFunctions, 'incomingAuthentication');

			expect(webhookFunctions.getNodeParameter).toHaveBeenCalledWith(
				'incomingAuthentication',
				'none',
			);
		});

		it('should handle "none" authentication', async () => {
			webhookFunctions.getNode.mockReturnValue({
				type: 'n8n-nodes-base.formTrigger',
			} as INode);
			webhookFunctions.getNodeParameter.mockReturnValue('none');

			const result = await generateFormPostBasicAuthToken(webhookFunctions, 'authentication');

			expect(result).toBeUndefined();
		});
	});

	describe('generateBasicAuthToken', () => {
		let testNode: INode;
		let randomCredentials: ICredentialDataDecryptedObject & {
			user: string;
			password: string;
		};

		beforeEach(() => {
			testNode = {
				id: new Date().getMilliseconds().toString(),
				webhookId: 'webhook-456',
				type: 'n8n-nodes-base.formTrigger',
			} as INode;

			randomCredentials = {
				user: (Math.random() * 100000).toString(),
				password: (Math.random() * 100000).toString(),
			};
		});

		it('should return undefined when credentials are empty', () => {
			const result = generateBasicAuthToken(testNode, undefined);

			expect(result).toBeUndefined();
		});

		it('should generate valid HMAC token using credentials', () => {
			const result = generateBasicAuthToken(testNode, randomCredentials);

			expect(result).toBeDefined();
			expect(typeof result).toBe('string');
			expect(result?.length).toBe(64);
		});

		it('should generate deterministic token for same inputs', () => {
			const token1 = generateBasicAuthToken(testNode, randomCredentials);
			const token2 = generateBasicAuthToken(testNode, randomCredentials);

			expect(token1).toBe(token2);
		});

		it('should generate different tokens for different credentials', () => {
			const token1 = generateBasicAuthToken(testNode, { user: 'user1', password: 'password' });
			const token2 = generateBasicAuthToken(testNode, { user: 'user2', password: 'password' });
			const token3 = generateBasicAuthToken(testNode, { user: 'user1', password: 'passwOrd' });

			expect(token1).not.toBe(token2);
			expect(token1).not.toBe(token3);
		});

		it('should generate different tokens for different node IDs', () => {
			const token1 = generateBasicAuthToken(
				{
					id: 'node-789',
					webhookId: 'webhook-456',
					type: 'n8n-nodes-base.formTrigger',
				} as INode,
				randomCredentials,
			);
			const token2 = generateBasicAuthToken(
				{
					id: 'node-678',
					webhookId: 'webhook-456',
					type: 'n8n-nodes-base.formTrigger',
				} as INode,
				randomCredentials,
			);
			const token3 = generateBasicAuthToken(
				{
					id: 'node-789',
					webhookId: 'webhook-459',
					type: 'n8n-nodes-base.formTrigger',
				} as INode,
				randomCredentials,
			);

			expect(token1).not.toBe(token2);
			expect(token1).not.toBe(token3);
		});
	});
});