/**
 * Integration Tests for Scheduled Execution Workflow
 * These tests verify the complete scheduled execution functionality works together
 * Requirements: 1.2, 2.1, 3.1, 3.2, 5.1, 5.2
 */

const ShopifyPriceUpdater = require("../../src/index");
const { getConfig } = require("../../src/config/environment");

// Mock external dependencies but test internal integration
jest.mock("../../src/config/environment");
jest.mock("../../src/services/shopify");
jest.mock("../../src/services/progress");
jest.mock("../../src/utils/logger");

describe("Scheduled Execution Workflow Integration Tests", () => {
	let mockConfig;
	let mockShopifyService;

	beforeEach(() => {
		// Mock base configuration
		mockConfig = {
			shopDomain: "test-shop.myshopify.com",
			accessToken: "test-token",
			targetTag: "scheduled-test",
			priceAdjustmentPercentage: 10,
			operationMode: "update",
			scheduledExecutionTime: null,
			isScheduled: false,
		};

		// Mock Shopify service responses
		mockShopifyService = {
			testConnection: jest.fn().mockResolvedValue(true),
			executeQuery: jest.fn(),
			executeMutation: jest.fn(),
			executeWithRetry: jest.fn(),
		};

		getConfig.mockReturnValue(mockConfig);

		// Mock ShopifyService constructor
		const ShopifyService = require("../../src/services/shopify");
		ShopifyService.mockImplementation(() => mockShopifyService);
	});

	afterEach(() => {
		jest.clearAllMocks();
	});

	describe("Backward Compatibility", () => {
		test("should execute immediately when scheduling is not configured", async () => {
			// Configure without scheduling
			mockConfig.scheduledExecutionTime = null;
			mockConfig.isScheduled = false;
			getConfig.mockReturnValue(mockConfig);

			// Mock product response
			const mockProductsResponse = {
				products: {
					edges: [
						{
							node: {
								id: "gid://shopify/Product/123",
								title: "Immediate Test Product",
								tags: ["scheduled-test"],
								variants: {
									edges: [
										{
											node: {
												id: "gid://shopify/ProductVariant/456",
												price: "50.00",
												compareAtPrice: null,
												title: "Test Variant",
											},
										},
									],
								},
							},
						},
					],
					pageInfo: { hasNextPage: false, endCursor: null },
				},
			};

			const mockUpdateResponse = {
				productVariantsBulkUpdate: {
					productVariants: [
						{
							id: "gid://shopify/ProductVariant/456",
							price: "55.00",
							compareAtPrice: "50.00",
						},
					],
					userErrors: [],
				},
			};

			mockShopifyService.executeWithRetry
				.mockResolvedValueOnce(mockProductsResponse)
				.mockResolvedValue(mockUpdateResponse);

			const app = new ShopifyPriceUpdater();
			const exitCode = await app.run();

			// Verify immediate execution
			expect(exitCode).toBe(0);

			// Verify normal workflow was executed
			expect(mockShopifyService.executeWithRetry).toHaveBeenCalledTimes(2);
		});

		test("should maintain rollback functionality without scheduling", async () => {
			// Configure rollback mode without scheduling
			const rollbackConfig = {
				...mockConfig,
				operationMode: "rollback",
				scheduledExecutionTime: null,
				isScheduled: false,
			};
			getConfig.mockReturnValue(rollbackConfig);

			// Mock rollback product response
			const mockProductsResponse = {
				products: {
					edges: [
						{
							node: {
								id: "gid://shopify/Product/123",
								title: "Rollback Test Product",
								tags: ["scheduled-test"],
								variants: {
									edges: [
										{
											node: {
												id: "gid://shopify/ProductVariant/456",
												price: "55.00",
												compareAtPrice: "50.00",
												title: "Test Variant",
											},
										},
									],
								},
							},
						},
					],
					pageInfo: { hasNextPage: false, endCursor: null },
				},
			};

			const mockRollbackResponse = {
				productVariantsBulkUpdate: {
					productVariants: [
						{
							id: "gid://shopify/ProductVariant/456",
							price: "50.00",
							compareAtPrice: null,
						},
					],
					userErrors: [],
				},
			};

			mockShopifyService.executeWithRetry
				.mockResolvedValueOnce(mockProductsResponse)
				.mockResolvedValue(mockRollbackResponse);

			const app = new ShopifyPriceUpdater();
			const exitCode = await app.run();

			// Verify immediate rollback execution
			expect(exitCode).toBe(0);

			// Verify rollback workflow was executed
			expect(mockShopifyService.executeWithRetry).toHaveBeenCalledTimes(2);
		});
	});

	describe("Scheduled Update Workflow", () => {
		test("should execute complete scheduled update workflow successfully", async () => {
			// Set up scheduled execution for immediate execution (past time)
			const scheduledTime = new Date(Date.now() - 1000); // 1 second ago
			const scheduledConfig = {
				...mockConfig,
				scheduledExecutionTime: scheduledTime,
				isScheduled: true,
				operationMode: "update",
			};
			getConfig.mockReturnValue(scheduledConfig);

			// Mock product fetching response
			const mockProductsResponse = {
				products: {
					edges: [
						{
							node: {
								id: "gid://shopify/Product/123",
								title: "Scheduled Test Product",
								tags: ["scheduled-test"],
								variants: {
									edges: [
										{
											node: {
												id: "gid://shopify/ProductVariant/456",
												price: "50.00",
												compareAtPrice: null,
												title: "Test Variant",
											},
										},
									],
								},
							},
						},
					],
					pageInfo: {
						hasNextPage: false,
						endCursor: null,
					},
				},
			};

			// Mock successful update response
			const mockUpdateResponse = {
				productVariantsBulkUpdate: {
					productVariants: [
						{
							id: "gid://shopify/ProductVariant/456",
							price: "55.00",
							compareAtPrice: "50.00",
						},
					],
					userErrors: [],
				},
			};

			mockShopifyService.executeWithRetry
				.mockResolvedValueOnce(mockProductsResponse)
				.mockResolvedValue(mockUpdateResponse);

			// Start the application
			const app = new ShopifyPriceUpdater();
			const exitCode = await app.run();

			// Verify successful completion
			expect(exitCode).toBe(0);

			// Verify Shopify API calls were made
			expect(mockShopifyService.executeWithRetry).toHaveBeenCalledTimes(2);
		});

		test("should execute complete scheduled rollback workflow successfully", async () => {
			// Set up scheduled execution for rollback mode
			const scheduledTime = new Date(Date.now() - 1000); // 1 second ago
			const scheduledConfig = {
				...mockConfig,
				scheduledExecutionTime: scheduledTime,
				isScheduled: true,
				operationMode: "rollback",
			};
			getConfig.mockReturnValue(scheduledConfig);

			// Mock product fetching response for rollback
			const mockProductsResponse = {
				products: {
					edges: [
						{
							node: {
								id: "gid://shopify/Product/123",
								title: "Rollback Test Product",
								tags: ["scheduled-test"],
								variants: {
									edges: [
										{
											node: {
												id: "gid://shopify/ProductVariant/456",
												price: "55.00",
												compareAtPrice: "50.00",
												title: "Test Variant",
											},
										},
									],
								},
							},
						},
					],
					pageInfo: {
						hasNextPage: false,
						endCursor: null,
					},
				},
			};

			// Mock successful rollback response
			const mockRollbackResponse = {
				productVariantsBulkUpdate: {
					productVariants: [
						{
							id: "gid://shopify/ProductVariant/456",
							price: "50.00",
							compareAtPrice: null,
						},
					],
					userErrors: [],
				},
			};

			mockShopifyService.executeWithRetry
				.mockResolvedValueOnce(mockProductsResponse)
				.mockResolvedValue(mockRollbackResponse);

			// Start the application
			const app = new ShopifyPriceUpdater();
			const exitCode = await app.run();

			// Verify successful completion
			expect(exitCode).toBe(0);

			// Verify Shopify API calls were made
			expect(mockShopifyService.executeWithRetry).toHaveBeenCalledTimes(2);
		});
	});

	describe("Cancellation During Countdown", () => {
		test("should handle cancellation during countdown period gracefully", async () => {
			// Set up scheduled execution for future time
			const scheduledTime = new Date(Date.now() + 5000); // 5 seconds in future
			const scheduledConfig = {
				...mockConfig,
				scheduledExecutionTime: scheduledTime,
				isScheduled: true,
			};
			getConfig.mockReturnValue(scheduledConfig);

			// Start the application
			const app = new ShopifyPriceUpdater();

			// Set up cancellation state management
			app.setSchedulingActive = jest.fn();
			app.setOperationInProgress = jest.fn();

			const runPromise = app.run();

			// Simulate cancellation by calling cleanup on schedule service after a short delay
			setTimeout(() => {
				if (app.scheduleService) {
					app.scheduleService.cleanup();
				}
			}, 50);

			const exitCode = await runPromise;

			// Verify cancellation was handled (should return 0 for clean cancellation)
			expect(exitCode).toBe(0);

			// Verify no product operations were executed
			expect(mockShopifyService.executeWithRetry).not.toHaveBeenCalled();
		});
	});

	describe("Error Handling in Scheduled Operations", () => {
		test("should handle API connection failures during scheduled execution", async () => {
			// Set up scheduled execution
			const scheduledTime = new Date(Date.now() - 1000); // 1 second ago
			const scheduledConfig = {
				...mockConfig,
				scheduledExecutionTime: scheduledTime,
				isScheduled: true,
			};
			getConfig.mockReturnValue(scheduledConfig);

			// Mock connection failure
			mockShopifyService.testConnection.mockResolvedValue(false);

			const app = new ShopifyPriceUpdater();
			const exitCode = await app.run();

			// Verify failure handling
			expect(exitCode).toBe(1);

			// Verify connection was tested
			expect(mockShopifyService.testConnection).toHaveBeenCalled();
		});

		test("should handle product fetching failures during scheduled execution", async () => {
			// Set up scheduled execution
			const scheduledTime = new Date(Date.now() - 1000); // 1 second ago
			const scheduledConfig = {
				...mockConfig,
				scheduledExecutionTime: scheduledTime,
				isScheduled: true,
			};
			getConfig.mockReturnValue(scheduledConfig);

			// Mock product fetching failure
			mockShopifyService.executeWithRetry.mockRejectedValue(
				new Error("GraphQL API error during scheduled execution")
			);

			const app = new ShopifyPriceUpdater();
			const exitCode = await app.run();

			// Verify failure handling
			expect(exitCode).toBe(1);

			// Verify product fetching was attempted
			expect(mockShopifyService.executeWithRetry).toHaveBeenCalled();
		});
	});
});