import {
	createWorkflowWithHistory,
	setActiveVersion,
	testDb,
	mockInstance,
} from '@n8n/backend-test-utils';
import type { IWorkflowDb, Project, User, WebhookEntity } from '@n8n/db';
import { WorkflowRepository } from '@n8n/db';
import { Container } from '@n8n/di';
import { mock } from 'jest-mock-extended';
import { InstanceSettings, ExternalSecretsProxy } from 'n8n-core';
import { FormTrigger } from 'n8n-nodes-base/nodes/Form/FormTrigger.node';
import { ScheduleTrigger } from 'n8n-nodes-base/nodes/Schedule/ScheduleTrigger.node';
import { NodeApiError, Workflow } from 'n8n-workflow';
import type * as N8nWorkflow from 'n8n-workflow';
import type {
	IWebhookData,
	IWorkflowBase,
	WorkflowActivateMode,
	INodeTypeData,
} from 'n8n-workflow';

import { ActiveExecutions } from '@/active-executions';
import { ActiveWorkflowManager } from '@/active-workflow-manager';
import { ExecutionService } from '@/executions/execution.service';
import { ExternalHooks } from '@/external-hooks';
import { NodeTypes } from '@/node-types';
import { Push } from '@/push';
import { OwnershipService } from '@/services/ownership.service';
import * as WebhookHelpers from '@/webhooks/webhook-helpers';
import { WebhookService } from '@/webhooks/webhook.service';
import * as AdditionalData from '@/workflow-execute-additional-data';
import { WorkflowService } from '@/workflows/workflow.service';

import { createOwner } from './shared/db/users';
import * as utils from './shared/utils/';

mockInstance(ActiveExecutions);
mockInstance(Push);
mockInstance(ExternalSecretsProxy);
mockInstance(ExecutionService);
mockInstance(WorkflowService);
mockInstance(OwnershipService, {
	getWorkflowProjectCached: jest.fn().mockResolvedValue(mock<Project>({ id: 'project-id' })),
});

const webhookService = mockInstance(WebhookService);
const externalHooks = mockInstance(ExternalHooks);

let activeWorkflowManager: ActiveWorkflowManager;

let createActiveWorkflow: (
	workflowOptions?: Parameters<typeof createWorkflowWithHistory>[0],
) => Promise<IWorkflowBase>;
let createInactiveWorkflow: () => Promise<IWorkflowBase>;
let owner: User;

jest.mock('n8n-workflow', () => {
	const actual = jest.requireActual<typeof N8nWorkflow>('n8n-workflow');
	return {
		...actual,
		validateWorkflowHasTriggerLikeNode: jest.fn(
			(...args: Parameters<typeof actual.validateWorkflowHasTriggerLikeNode>) =>
				actual.validateWorkflowHasTriggerLikeNode(...args),
		),
	};
});

const { validateWorkflowHasTriggerLikeNode } = jest.requireMock<typeof N8nWorkflow>('n8n-workflow');
const validateWorkflowHasTriggerLikeNodeSpy =
	validateWorkflowHasTriggerLikeNode as jest.MockedFunction<
		typeof N8nWorkflow.validateWorkflowHasTriggerLikeNode
	>;

beforeAll(async () => {
	await testDb.init();

	activeWorkflowManager = Container.get(ActiveWorkflowManager);

	const nodes: INodeTypeData = {
		'n8n-nodes-base.scheduleTrigger': {
			type: new ScheduleTrigger(),
			sourcePath: '',
		},
		'n8n-nodes-base.formTrigger': {
			type: new FormTrigger(),
			sourcePath: '',
		},
	};

	await utils.initNodeTypes(nodes);

	owner = await createOwner();
	createActiveWorkflow = async (workflowOptions: Partial<IWorkflowDb> = {}) => {
		const workflow = await createWorkflowWithHistory({ active: true, ...workflowOptions }, owner);
		await setActiveVersion(workflow.id, workflow.versionId);
		return workflow;
	};
	createInactiveWorkflow = async () => await createWorkflowWithHistory({ active: false }, owner);
	Container.get(InstanceSettings).markAsLeader();
});

afterEach(async () => {
	await activeWorkflowManager.removeAll();
	await testDb.truncate([
		'WorkflowEntity',
		'WebhookEntity',
		'WorkflowHistory',
		'WorkflowPublishHistory',
	]);
	jest.clearAllMocks();
});

afterAll(async () => {
	await testDb.terminate();
});

describe('init()', () => {
	it('should load workflows into memory', async () => {
		await activeWorkflowManager.init();

		expect(activeWorkflowManager.allActiveInMemory()).toHaveLength(0);

		await createActiveWorkflow();
		await activeWorkflowManager.init();

		expect(activeWorkflowManager.allActiveInMemory()).toHaveLength(1);
	});

	it('should call external hook', async () => {
		await activeWorkflowManager.init();

		expect(externalHooks.run).toHaveBeenCalledWith('activeWorkflows.initialized');
	});

	it('should check that workflow can be activated', async () => {
		await Promise.all([createActiveWorkflow(), createActiveWorkflow()]);

		await activeWorkflowManager.init();

		expect(validateWorkflowHasTriggerLikeNodeSpy).toHaveBeenCalledTimes(2);
	});
});

describe('add()', () => {
	describe('in single-main mode', () => {
		test.each(['activate', 'update'])(
			"should add webhooks, triggers and pollers for workflow in '%s' activation mode",
			async (mode: WorkflowActivateMode) => {
				await activeWorkflowManager.init();

				const dbWorkflow = await createActiveWorkflow();
				const addWebhooksSpy = jest.spyOn(activeWorkflowManager, 'addWebhooks');
				const addTriggersAndPollersSpy = jest.spyOn(activeWorkflowManager, 'addTriggersAndPollers');

				await activeWorkflowManager.add(dbWorkflow.id, mode);

				const [argWorkflow] = addWebhooksSpy.mock.calls[0];
				const [_, _argWorkflow] = addTriggersAndPollersSpy.mock.calls[0];

				expect(addWebhooksSpy).toHaveBeenCalledTimes(1);
				expect(addTriggersAndPollersSpy).toHaveBeenCalledTimes(1);

				if (!(argWorkflow instanceof Workflow)) fail();
				if (!(_argWorkflow instanceof Workflow)) fail();

				expect(argWorkflow.id).toBe(dbWorkflow.id);
				expect(_argWorkflow.id).toBe(dbWorkflow.id);
			},
		);
	});

	test('should count workflow triggers correctly when node has multiple webhooks', async () => {
		const workflowRepositoryInstance = Container.get(WorkflowRepository);
		const updateWorkflowTriggerCountSpy = jest.spyOn(
			workflowRepositoryInstance,
			'updateWorkflowTriggerCount',
		);
		await activeWorkflowManager.init();

		// Mock all of the webhooks
		const mockWebhooks: IWebhookData[] = [
			mock<IWebhookData>({ node: 'Form Trigger', httpMethod: 'GET', path: '/webhook-path' }),
			mock<IWebhookData>({ node: 'Form Trigger', httpMethod: 'POST', path: '/webhook-path' }),
		];
		webhookService.getNodeWebhooks.mockReturnValue(mockWebhooks);
		webhookService.createWebhook.mockReturnValue(
			mock<WebhookEntity>({ webhookPath: '/webhook-path' }),
		);

		// Create a workflow which has a form trigger
		const dbWorkflow = await createActiveWorkflow({
			nodes: [
				{
					id: 'uuid-1',
					parameters: { path: 'test-webhook-path', options: {} },
					name: 'Form Trigger',
					type: 'n8n-nodes-base.formTrigger',
					typeVersion: 1,
					position: [500, 300],
				},
			],
		});

		await activeWorkflowManager.add(dbWorkflow.id, 'activate');

		expect(updateWorkflowTriggerCountSpy).toHaveBeenCalledWith(dbWorkflow.id, 1);
	});

	test('should activate a workflow after its active status changes from false to true', async () => {
		await activeWorkflowManager.init();

		const dbWorkflow = await createInactiveWorkflow();
		webhookService.getNodeWebhooks.mockReturnValue([]);

		// Verify it's not active in memory yet
		expect(activeWorkflowManager.allActiveInMemory()).toHaveLength(0);

		// Simulate the workflow being activated
		await setActiveVersion(dbWorkflow.id, dbWorkflow.versionId!);
		await Container.get(WorkflowRepository).update(dbWorkflow.id, { active: true });

		await activeWorkflowManager.add(dbWorkflow.id, 'activate');

		expect(activeWorkflowManager.allActiveInMemory()).toHaveLength(1);
		expect(activeWorkflowManager.allActiveInMemory()).toContain(dbWorkflow.id);
	});
});

describe('removeAll()', () => {
	it('should remove all active workflows from memory', async () => {
		await createActiveWorkflow();
		await createActiveWorkflow();

		await activeWorkflowManager.init();
		await activeWorkflowManager.removeAll();

		expect(activeWorkflowManager.allActiveInMemory()).toHaveLength(0);
	});
});

describe('remove()', () => {
	describe('in single-main mode', () => {
		it('should remove all webhooks of a workflow from database', async () => {
			const dbWorkflow = await createActiveWorkflow();

			await activeWorkflowManager.init();
			await activeWorkflowManager.remove(dbWorkflow.id);

			expect(webhookService.deleteWorkflowWebhooks).toHaveBeenCalledTimes(1);
		});

		it('should remove all webhooks of a workflow from external service', async () => {
			const dbWorkflow = await createActiveWorkflow();
			jest
				.spyOn(WebhookHelpers, 'getWorkflowWebhooks')
				.mockReturnValue([mock<IWebhookData>({ path: 'some-path' })]);

			await activeWorkflowManager.init();
			await activeWorkflowManager.remove(dbWorkflow.id);

			expect(webhookService.deleteWebhook).toHaveBeenCalledTimes(1);
		});

		it('should stop running triggers and pollers', async () => {
			const dbWorkflow = await createActiveWorkflow();
			const removeTriggersAndPollersSpy = jest.spyOn(
				activeWorkflowManager,
				'removeWorkflowTriggersAndPollers',
			);

			await activeWorkflowManager.init();
			await activeWorkflowManager.remove(dbWorkflow.id);

			expect(removeTriggersAndPollersSpy).toHaveBeenCalledTimes(1);
		});
	});
});

describe('executeErrorWorkflow()', () => {
	// it('should delegate to `WorkflowExecuteAdditionalData`', async () => {
	// 	const dbWorkflow = await createActiveWorkflow();
	// 	const [node] = dbWorkflow.nodes;

	// 	const executeSpy = jest.spyOn(AdditionalData, 'executeErrorWorkflow');

	// 	await activeWorkflowManager.init();

	// 	activeWorkflowManager.executeErrorWorkflow(
	// 		new NodeOperationError(node, 'Something went wrong'),
	// 		dbWorkflow,
	// 		'trigger',
	// 	);

	// 	expect(executeSpy).toHaveBeenCalledTimes(1);
	// });

	it('should be called on failure to activate due to 401', async () => {
		const dbWorkflow = await createActiveWorkflow();
		const [node] = dbWorkflow.nodes;
		const executeSpy = jest.spyOn(activeWorkflowManager, 'executeErrorWorkflow');

		jest.spyOn(activeWorkflowManager, 'add').mockImplementation(() => {
			throw new NodeApiError(node, {
				httpCode: '401',
				message: 'Authorization failed - please check your credentials',
			});
		});

		await activeWorkflowManager.init();

		expect(executeSpy).toHaveBeenCalledTimes(1);
		const [error, _dbWorkflow] = executeSpy.mock.calls[0];
		expect(error.message).toContain('Authorization');
		expect(_dbWorkflow.id).toBe(dbWorkflow.id);
	});
});

describe('addWebhooks()', () => {
	it('should call `WebhookService.storeWebhook()`', async () => {
		const webhook = mock<IWebhookData>({ path: 'some-path' });
		const webhookEntity = mock<WebhookEntity>({ webhookPath: 'some-path' });

		jest.spyOn(WebhookHelpers, 'getWorkflowWebhooks').mockReturnValue([webhook]);

		webhookService.createWebhook.mockReturnValue(webhookEntity);

		const additionalData = await AdditionalData.getBase({ userId: 'some-user-id' });

		const dbWorkflow = await createActiveWorkflow();

		const workflow = new Workflow({
			id: dbWorkflow.id,
			name: dbWorkflow.name,
			nodes: dbWorkflow.nodes,
			connections: dbWorkflow.connections,
			active: dbWorkflow.active,
			nodeTypes: Container.get(NodeTypes),
			staticData: dbWorkflow.staticData,
			settings: dbWorkflow.settings,
		});

		const [node] = dbWorkflow.nodes;

		jest.spyOn(Workflow.prototype, 'getNode').mockReturnValue(node);
		webhookService.createWebhookIfNotExists.mockResolvedValue(undefined);

		await activeWorkflowManager.addWebhooks(workflow, additionalData, 'trigger', 'init');

		expect(webhookService.storeWebhook).toHaveBeenCalledTimes(1);
	});
});