const React = require("react");
const OperationScreen = require("../../../../src/tui/components/screens/OperationScreen.jsx");

// Mock dependencies
jest.mock("../../../../src/tui/providers/AppProvider.jsx");
jest.mock("../../../../src/tui/components/common/MenuList.jsx");
jest.mock("../../../../src/tui/components/common/ProgressBar.jsx");

const {
	useAppState,
} = require("../../../../src/tui/providers/AppProvider.jsx");
const MenuList = require("../../../../src/tui/components/common/MenuList.jsx");
const ProgressBar = require("../../../../src/tui/components/common/ProgressBar.jsx");

describe("OperationScreen - Progress Display", () => {
	let mockUseAppState;
	let mockNavigateBack;
	let mockUpdateOperationState;
	let mockUpdateUIState;

	beforeEach(() => {
		jest.clearAllMocks();

		// Setup default mocks
		mockNavigateBack = jest.fn();
		mockUpdateOperationState = jest.fn();
		mockUpdateUIState = jest.fn();

		mockUseAppState = {
			appState: {
				currentScreen: "operation",
				navigationHistory: ["main-menu"],
				configuration: {
					shopDomain: "test-store.myshopify.com",
					accessToken: "shpat_test_token",
					targetTag: "sale",
					priceAdjustment: 10,
					operationMode: "update",
					isValid: true,
					lastTested: new Date("2024-01-01T12:00:00Z"),
				},
				operationState: null,
				uiState: {
					focusedComponent: "menu",
					modalOpen: false,
					selectedMenuIndex: 0,
					scrollPosition: 0,
				},
			},
			navigateBack: mockNavigateBack,
			updateOperationState: mockUpdateOperationState,
			updateUIState: mockUpdateUIState,
		};

		useAppState.mockReturnValue(mockUseAppState);

		// Mock MenuList component
		MenuList.mockImplementation(
			({ items, selectedIndex, onSelect, onHighlight, ...props }) =>
				React.createElement("div", {
					...props,
					"data-testid": "menu-list",
					"data-items": JSON.stringify(items),
					"data-selected": selectedIndex,
				})
		);

		// Mock ProgressBar component
		ProgressBar.mockImplementation(({ progress, label, color, ...props }) =>
			React.createElement("div", {
				...props,
				"data-testid": "progress-bar",
				"data-progress": progress,
				"data-label": label,
				"data-color": color,
			})
		);
	});

	describe("Real-time Progress Display", () => {
		test("displays progress bar during operation execution", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "running",
				progress: 45,
				currentProduct: "Processing: Test Product",
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should render progress bar with current progress
		});

		test("shows current product being processed", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "processing",
				progress: 60,
				currentProduct: "Processing: Another Test Product",
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should display current product information
		});

		test("displays operation status correctly", () => {
			const testStatuses = [
				{ status: "running", expected: "Starting operation..." },
				{ status: "fetching", expected: "Fetching products..." },
				{ status: "processing", expected: "Processing products..." },
				{ status: "completed", expected: "Operation completed" },
				{ status: "error", expected: "Operation failed" },
			];

			testStatuses.forEach(({ status, expected }) => {
				mockUseAppState.appState.operationState = {
					type: "update",
					status,
					progress: 50,
					startTime: new Date(),
				};

				const component = React.createElement(OperationScreen);
				expect(component).toBeDefined();

				// Component should display correct status text
			});
		});

		test("shows operation start time", () => {
			const startTime = new Date("2024-01-01T15:30:00Z");
			mockUseAppState.appState.operationState = {
				type: "rollback",
				status: "running",
				progress: 25,
				startTime,
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should display start time
		});
	});

	describe("Progress Bar Integration", () => {
		test("passes correct props to ProgressBar component", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "processing",
				progress: 75,
				currentProduct: "Processing: Final Product",
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// ProgressBar should be called with correct props
			// This would be verified in a more detailed test
		});

		test("handles zero progress correctly", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "running",
				progress: 0,
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle zero progress without issues
		});

		test("handles 100% progress correctly", () => {
			mockUseAppState.appState.operationState = {
				type: "rollback",
				status: "completed",
				progress: 100,
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle complete progress
		});
	});

	describe("Live Statistics Display", () => {
		test("shows live statistics during operation", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "processing",
				progress: 80,
				results: {
					totalProducts: 50,
					successfulUpdates: 40,
					failedUpdates: 2,
				},
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should display live statistics
		});

		test("shows rollback-specific statistics", () => {
			mockUseAppState.appState.operationState = {
				type: "rollback",
				status: "processing",
				progress: 65,
				results: {
					totalProducts: 30,
					successfulRollbacks: 25,
					failedRollbacks: 1,
					skippedVariants: 4,
				},
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should display rollback statistics including skipped variants
		});

		test("handles missing statistics gracefully", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "running",
				progress: 30,
				results: null,
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle missing results without crashing
		});
	});

	describe("Operation State Transitions", () => {
		test("handles transition from selection to executing", () => {
			// Start with no operation state
			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Simulate operation start
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "running",
				progress: 0,
				startTime: new Date(),
			};

			// Component should handle state transition
		});

		test("handles transition from executing to completed", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "completed",
				progress: 100,
				results: {
					totalProducts: 25,
					successfulUpdates: 24,
					failedUpdates: 1,
				},
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle completion state
		});

		test("handles error state during operation", () => {
			mockUseAppState.appState.operationState = {
				type: "rollback",
				status: "error",
				progress: 45,
				results: {
					error: "Network connection failed",
					totalProducts: 0,
					successfulRollbacks: 0,
					failedRollbacks: 0,
				},
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle error state appropriately
		});
	});

	describe("Requirements Compliance", () => {
		test("implements real-time progress indicators (Requirement 3.2)", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "processing",
				progress: 55,
				currentProduct: "Processing: Test Product",
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should provide real-time progress indicators
		});

		test("displays current product information (Requirement 3.3)", () => {
			mockUseAppState.appState.operationState = {
				type: "rollback",
				status: "processing",
				progress: 70,
				currentProduct: "Rolling back: Another Product",
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should show current product being processed
		});

		test("shows processing status updates (Requirement 4.2)", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "fetching",
				progress: 10,
				currentProduct: "Fetching products...",
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should display processing status
		});

		test("provides status information display (Requirement 8.2)", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				status: "processing",
				progress: 85,
				currentProduct: "Processing: Final Product",
				results: {
					totalProducts: 100,
					successfulUpdates: 85,
					failedUpdates: 0,
				},
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should provide comprehensive status information
		});
	});

	describe("Error Handling in Progress Display", () => {
		test("handles missing operation state gracefully", () => {
			mockUseAppState.appState.operationState = null;

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle null operation state
		});

		test("handles incomplete operation state", () => {
			mockUseAppState.appState.operationState = {
				type: "update",
				// Missing other required fields
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle incomplete state gracefully
		});

		test("handles invalid progress values", () => {
			mockUseAppState.appState.operationState = {
				type: "rollback",
				status: "processing",
				progress: -10, // Invalid negative progress
				startTime: new Date(),
			};

			const component = React.createElement(OperationScreen);
			expect(component).toBeDefined();

			// Component should handle invalid progress values
		});
	});

	describe("Mock Validation", () => {
		test("progress display mocks are properly configured", () => {
			expect(jest.isMockFunction(useAppState)).toBe(true);
			expect(jest.isMockFunction(ProgressBar)).toBe(true);
		});

		test("component works with different progress states", () => {
			const progressStates = [
				{ progress: 0, status: "running" },
				{ progress: 25, status: "fetching" },
				{ progress: 50, status: "processing" },
				{ progress: 75, status: "processing" },
				{ progress: 100, status: "completed" },
			];

			progressStates.forEach(({ progress, status }) => {
				mockUseAppState.appState.operationState = {
					type: "update",
					status,
					progress,
					startTime: new Date(),
				};

				const component = React.createElement(OperationScreen);
				expect(component).toBeDefined();
			});
		});
	});
});