/**
 * Windows Compatibility Tests
 * Tests TUI functionality specifically on Windows systems including
 * Windows Terminal, Command Prompt, and PowerShell environments
 */

import { render } from "ink-testing-library";
import React from "react";
import { Text, Box } from "ink";
import { TuiApplication } from "../../../src/tui/TuiApplication.jsx";
import {
	detectWindowsTerminal,
	getWindowsTerminalCapabilities,
} from "../../../src/tui/utils/modernTerminal.js";

// Mock process.platform for Windows testing
const originalPlatform = process.platform;

describe("Windows Compatibility Tests", () => {
	beforeAll(() => {
		// Mock Windows environment
		Object.defineProperty(process, "platform", {
			value: "win32",
			writable: true,
		});
	});

	afterAll(() => {
		// Restore original platform
		Object.defineProperty(process, "platform", {
			value: originalPlatform,
			writable: true,
		});
	});

	describe("Windows Terminal Detection", () => {
		test("should detect Windows Terminal environment", () => {
			// Mock Windows Terminal environment variables
			const originalEnv = process.env;
			process.env = {
				...originalEnv,
				WT_SESSION: "test-session-id",
				TERM_PROGRAM: "Windows Terminal",
			};

			const isWindowsTerminal = detectWindowsTerminal();
			expect(isWindowsTerminal).toBe(true);

			process.env = originalEnv;
		});

		test("should detect Command Prompt environment", () => {
			const originalEnv = process.env;
			process.env = {
				...originalEnv,
				PROMPT: "$P$G",
				COMSPEC: "C:\\Windows\\system32\\cmd.exe",
			};
			delete process.env.WT_SESSION;
			delete process.env.TERM_PROGRAM;

			const capabilities = getWindowsTerminalCapabilities();
			expect(capabilities.isCommandPrompt).toBe(true);
			expect(capabilities.supportsUnicode).toBe(false);
			expect(capabilities.supportsTrueColor).toBe(false);

			process.env = originalEnv;
		});

		test("should detect PowerShell environment", () => {
			const originalEnv = process.env;
			process.env = {
				...originalEnv,
				PSModulePath: "C:\\Program Files\\PowerShell\\Modules",
				TERM_PROGRAM: "PowerShell",
			};
			delete process.env.WT_SESSION;

			const capabilities = getWindowsTerminalCapabilities();
			expect(capabilities.isPowerShell).toBe(true);
			expect(capabilities.supportsUnicode).toBe(true);
			expect(capabilities.supportsTrueColor).toBe(false);

			process.env = originalEnv;
		});
	});

	describe("Unicode Character Rendering", () => {
		test("should render basic Unicode characters on Windows", () => {
			const TestComponent = () => (
				<Box>
					<Text>Progress: ░░░░░░░░░░ 0%</Text>
					<Text>Status: ● Connected</Text>
					<Text>Arrow: ► Selected</Text>
				</Box>
			);

			const { lastFrame } = render(<TestComponent />);
			const output = lastFrame();

			// Test that Unicode characters are present (may be replaced with fallbacks)
			expect(output).toMatch(/Progress:.*0%/);
			expect(output).toMatch(/Status:.*Connected/);
			expect(output).toMatch(/Arrow:.*Selected/);
		});

		test("should handle Unicode fallbacks for Command Prompt", () => {
			// Mock Command Prompt environment
			const originalEnv = process.env;
			process.env = {
				...originalEnv,
				COMSPEC: "C:\\Windows\\system32\\cmd.exe",
			};
			delete process.env.WT_SESSION;
			delete process.env.TERM_PROGRAM;

			const TestComponent = () => {
				const capabilities = getWindowsTerminalCapabilities();
				return (
					<Box>
						<Text>
							Progress:{" "}
							{capabilities.supportsUnicode ? "░░░░░░░░░░" : "----------"} 0%
						</Text>
						<Text>
							Status: {capabilities.supportsUnicode ? "●" : "*"} Connected
						</Text>
					</Box>
				);
			};

			const { lastFrame } = render(<TestComponent />);
			const output = lastFrame();

			expect(output).toContain("Progress: ---------- 0%");
			expect(output).toContain("Status: * Connected");

			process.env = originalEnv;
		});
	});

	describe("Color Support", () => {
		test("should detect color support in Windows Terminal", () => {
			const originalEnv = process.env;
			process.env = {
				...originalEnv,
				WT_SESSION: "test-session",
				COLORTERM: "truecolor",
			};

			const capabilities = getWindowsTerminalCapabilities();
			expect(capabilities.supportsTrueColor).toBe(true);
			expect(capabilities.supportsColor).toBe(true);

			process.env = originalEnv;
		});

		test("should handle limited color support in Command Prompt", () => {
			const originalEnv = process.env;
			process.env = {
				...originalEnv,
				COMSPEC: "C:\\Windows\\system32\\cmd.exe",
			};
			delete process.env.WT_SESSION;
			delete process.env.COLORTERM;

			const capabilities = getWindowsTerminalCapabilities();
			expect(capabilities.supportsTrueColor).toBe(false);
			expect(capabilities.supportsColor).toBe(true); // Basic 16 colors

			process.env = originalEnv;
		});
	});

	describe("Keyboard Input Handling", () => {
		test("should handle Windows-specific key combinations", () => {
			const TestComponent = () => {
				const [keyPressed, setKeyPressed] = React.useState("");

				React.useEffect(() => {
					const handleInput = (input, key) => {
						if (key) {
							// Windows-specific key handling
							if (key.ctrl && key.name === "c") {
								setKeyPressed("ctrl+c");
							} else if (key.name === "escape") {
								setKeyPressed("escape");
							} else if (key.name === "return") {
								setKeyPressed("enter");
							}
						}
					};

					process.stdin.on("keypress", handleInput);
					return () => process.stdin.off("keypress", handleInput);
				}, []);

				return <Text>Last key: {keyPressed}</Text>;
			};

			const { lastFrame, stdin } = render(<TestComponent />);

			// Simulate Windows key events
			stdin.write("\x03"); // Ctrl+C
			expect(lastFrame()).toContain("Last key: ctrl+c");
		});
	});

	describe("Terminal Resizing", () => {
		test("should handle Windows terminal resize events", () => {
			const TestComponent = () => {
				const [size, setSize] = React.useState({ width: 80, height: 24 });

				React.useEffect(() => {
					const handleResize = () => {
						setSize({
							width: process.stdout.columns || 80,
							height: process.stdout.rows || 24,
						});
					};

					process.stdout.on("resize", handleResize);
					return () => process.stdout.off("resize", handleResize);
				}, []);

				return (
					<Text>
						Terminal: {size.width}x{size.height}
					</Text>
				);
			};

			const { lastFrame } = render(<TestComponent />);
			expect(lastFrame()).toMatch(/Terminal: \d+x\d+/);
		});
	});

	describe("File Path Handling", () => {
		test("should handle Windows file paths correctly", () => {
			const windowsPath = "C:\\Users\\Test\\AppData\\Local\\Temp\\test.log";
			const normalizedPath = windowsPath.replace(/\\/g, "/");

			expect(normalizedPath).toBe("C:/Users/Test/AppData/Local/Temp/test.log");
		});

		test("should handle UNC paths", () => {
			const uncPath = "\\\\server\\share\\file.txt";
			const isUncPath = uncPath.startsWith("\\\\");

			expect(isUncPath).toBe(true);
		});
	});

	describe("Process Management", () => {
		test("should handle Windows process signals", () => {
			const originalPlatform = process.platform;
			Object.defineProperty(process, "platform", { value: "win32" });

			// Windows doesn't support SIGTERM the same way
			const supportsSigterm = process.platform !== "win32";
			expect(supportsSigterm).toBe(false);

			Object.defineProperty(process, "platform", { value: originalPlatform });
		});
	});
});