إضافة واجهة التطبيق

public class Main { public static void main(String[] args) { // 1. تهيئة البنية التحتية DataSource dataSource = DataSourceFactory.create(); TaskRepository taskRepo = new JdbcTaskRepository(dataSource); UserRepository userRepo = new JdbcUserRepository(dataSource); // 2. بناء الخدمات TaskService taskService = new TaskService(taskRepo); UserService userService = new UserService(userRepo); // 3. بناء CLI وتشغيله Cli cli = new Cli(taskService, userService); cli.run(args); } }

public class Cli { private final TaskService taskService; private final UserService userService; private final PrintWriter out; public Cli(TaskService taskService, UserService userService) { this(taskService, userService, new PrintWriter(System.out, true)); } // مُنشئ للاختبارية — أدخِل أي Writer public Cli(TaskService taskService, UserService userService, PrintWriter out) { this.taskService = taskService; this.userService = userService; this.out = out; } public void run(String[] args) { if (args.length == 0) { printHelp(); return; } String command = args[0].toLowerCase(); String[] rest = Arrays.copyOfRange(args, 1, args.length); try { switch (command) { case "task:add" -> handleTaskAdd(rest); case "task:list" -> handleTaskList(rest); case "task:done" -> handleTaskDone(rest); case "task:delete" -> handleTaskDelete(rest); case "user:create" -> handleUserCreate(rest); case "help" -> printHelp(); default -> { out.println("Unknown command: " + command); printHelp(); } } } catch (IllegalArgumentException e) { // أخطاء التحقق من طبقة الخدمة — رسالة للمستخدم out.println("Error: " + e.getMessage()); } catch (RuntimeException e) { // أعطال بنية تحتية غير متوقعة out.println("Unexpected error: " + e.getMessage()); } } private void handleTaskAdd(String[] args) { requireArgs(args, 2, "task:add <userId> <title>"); long userId = parseLong(args[0], "userId"); String title = args[1]; Task task = taskService.createTask(userId, title); out.printf("Created task #%d: %s%n", task.getId(), task.getTitle()); } private void handleTaskList(String[] args) { requireArgs(args, 1, "task:list <userId>"); long userId = parseLong(args[0], "userId"); List<Task> tasks = taskService.getTasksForUser(userId); if (tasks.isEmpty()) { out.println("No tasks found."); } else { tasks.forEach(t -> out.printf("[%s] #%d %s%n", t.isDone() ? "x" : " ", t.getId(), t.getTitle())); } } private void handleTaskDone(String[] args) { requireArgs(args, 1, "task:done <taskId>"); long taskId = parseLong(args[0], "taskId"); taskService.markDone(taskId); out.println("Task #" + taskId + " marked as done."); } private void handleTaskDelete(String[] args) { requireArgs(args, 1, "task:delete <taskId>"); long taskId = parseLong(args[0], "taskId"); taskService.deleteTask(taskId); out.println("Task #" + taskId + " deleted."); } private void handleUserCreate(String[] args) { requireArgs(args, 1, "user:create <email>"); User user = userService.register(args[0]); out.printf("Created user #%d (%s)%n", user.getId(), user.getEmail()); } private void requireArgs(String[] args, int n, String usage) { if (args.length < n) { throw new IllegalArgumentException("Usage: " + usage); } } private long parseLong(String value, String name) { try { return Long.parseLong(value); } catch (NumberFormatException e) { throw new IllegalArgumentException(name + " must be a number, got: " + value); } } private void printHelp() { out.println(""" Usage: app <command> [options] Commands: task:add <userId> <title> Create a task for a user task:list <userId> List all tasks for a user task:done <taskId> Mark a task as done task:delete <taskId> Delete a task user:create <email> Register a new user help Show this message """); } }

# تسجيل مستخدم java -jar app.jar user:create alice@example.com # إضافة مهمة java -jar app.jar task:add 1 "Write unit tests" # عرض المهام java -jar app.jar task:list 1 # وضع علامة "منجزة" java -jar app.jar task:done 1

public void repl() { out.println("Task Manager — type 'help' for commands, 'exit' to quit."); try (Scanner scanner = new Scanner(System.in)) { while (scanner.hasNextLine()) { String line = scanner.nextLine().trim(); if (line.equalsIgnoreCase("exit")) break; if (line.isBlank()) continue; run(line.split("\\s+", -1)); } } out.println("Goodbye."); }

import io.javalin.Javalin; import io.javalin.http.Context; public class HttpServer { private final TaskService taskService; private final UserService userService; public HttpServer(TaskService taskService, UserService userService) { this.taskService = taskService; this.userService = userService; } public void start(int port) { Javalin app = Javalin.create().start(port); app.get("/users/{id}/tasks", this::listTasks); app.post("/users/{id}/tasks", this::createTask); app.patch("/tasks/{id}/done", this::markDone); app.delete("/tasks/{id}", this::deleteTask); } private void listTasks(Context ctx) { long userId = Long.parseLong(ctx.pathParam("id")); ctx.json(taskService.getTasksForUser(userId)); } private void createTask(Context ctx) { long userId = Long.parseLong(ctx.pathParam("id")); String title = ctx.bodyAsClass(CreateTaskRequest.class).title(); ctx.status(201).json(taskService.createTask(userId, title)); } private void markDone(Context ctx) { taskService.markDone(Long.parseLong(ctx.pathParam("id"))); ctx.status(204); } private void deleteTask(Context ctx) { taskService.deleteTask(Long.parseLong(ctx.pathParam("id"))); ctx.status(204); } }