Xây todo bền trên KV Building a Persistent Todo App សង់កម្មវិធី todo ជាប់លើ KV

this.server.tool(
  "add_new_todo",
  "Add a new task to your todo list",
  { task: z.string().describe("Task description") },
  async ({ task }) => {
    await this.env.TODO_STORE.put(
      `${task}`,
      JSON.stringify({
        completed: false,
        createdAt: new Date().toISOString(),
      }),
    );
    return { content: [{ type: "text", text: `Added task: ${task}` }] };
  },
);

this.server.tool(
  "list_all_todos",
  "List all tasks in your todo list",
  {},
  async () => {
    const list = await this.env.TODO_STORE.list();
    const tasks = [];

    for (const key of list.keys) {
      const value = await this.env.TODO_STORE.get(key.name);
      if (value) {
        let taskData;
        try {
          taskData = JSON.parse(value);
        } catch (e) {
          continue;
        }
        tasks.push(`${taskData.completed ? "✅" : "📋"} ${key.name}`);
      }
    }

    if (tasks.length === 0) {
      return {
        content: [
          { type: "text", text: "No tasks found. Add some tasks first!" },
        ],
      };
    }

    return {
      content: [
        {
          type: "text",
          text: `Todo List:\n${tasks.join("\n")}`,
        },
      ],
    };
  },
);

this.server.tool(
  "complete_todo",
  "Mark a task as completed",
  { task: z.string().describe("Task to mark as completed") },
  async ({ task }) => {
    const value = await this.env.TODO_STORE.get(task);
    if (!value) {
      return { content: [{ type: "text", text: `Task "${task}" not found` }] };
    }

    let taskData;
    try {
      taskData = JSON.parse(value);
    } catch (e) {
      return { content: [{ type: "text", text: `Invalid task ${task}` }] };
    }

    taskData.completed = true;

    await this.env.TODO_STORE.put(task, JSON.stringify(taskData));
    return { content: [{ type: "text", text: `Completed task: ${task}` }] };
  },
);