/**
 * Tools Route 测试
 *
 * 测试工具管理 REST API 端点
 * 注意：现在使用 Core 的 toolRegistry，工具已预先注册
 */

import { describe, it, expect, beforeEach, vi } from 'vitest';
import { Hono } from 'hono';
import { toolsRouter } from '../../../src/routes/tools.js';
import { toolRegistry } from '@ai-assistant/core';

// Create test app
const app = new Hono();
app.route('/tools', toolsRouter);

describe('Tools Route', () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  describe('GET /tools - 列出所有工具', () => {
    it('返回工具列表', async () => {
      const res = await app.request('/tools');
      const json = await res.json();

      expect(res.status).toBe(200);
      expect(json.success).toBe(true);
      expect(Array.isArray(json.data)).toBe(true);
      // Core toolRegistry 已注册工具
      expect(json.data.length).toBeGreaterThan(0);
    });

    it('工具包含必要字段', async () => {
      const res = await app.request('/tools');
      const json = await res.json();

      expect(res.status).toBe(200);
      // 检查第一个工具的字段
      if (json.data.length > 0) {
        const tool = json.data[0];
        expect(tool).toHaveProperty('name');
        expect(tool).toHaveProperty('description');
        expect(tool).toHaveProperty('parameters');
        // 不应该包含 execute 函数
        expect(tool).not.toHaveProperty('execute');
      }
    });

    it('返回的工具数量与 Core Registry 一致', async () => {
      const res = await app.request('/tools');
      const json = await res.json();

      expect(res.status).toBe(200);
      expect(json.data.length).toBe(toolRegistry.getAllTools().length);
    });
  });

  describe('GET /tools/:name - 获取单个工具', () => {
    it('返回存在的工具 (bash)', async () => {
      const res = await app.request('/tools/bash');
      const json = await res.json();

      expect(res.status).toBe(200);
      expect(json.success).toBe(true);
      expect(json.data.name).toBe('bash');
      expect(json.data.description).toBeDefined();
    });

    it('返回存在的工具 (read_file)', async () => {
      const res = await app.request('/tools/read_file');
      const json = await res.json();

      expect(res.status).toBe(200);
      expect(json.success).toBe(true);
      expect(json.data.name).toBe('read_file');
    });

    it('工具不存在返回 404', async () => {
      const res = await app.request('/tools/non-existent-tool-12345');
      const json = await res.json();

      expect(res.status).toBe(404);
      expect(json.success).toBe(false);
      expect(json.error).toBe('Tool not found');
    });
  });

  describe('POST /tools/:name/execute - 执行工具', () => {
    it('存在的工具返回占位响应', async () => {
      const res = await app.request('/tools/bash/execute', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ params: { command: 'echo test' } }),
      });
      const json = await res.json();

      expect(res.status).toBe(200);
      expect(json.success).toBe(true);
      expect(json.data.tool).toBe('bash');
      expect(json.data.params).toEqual({ command: 'echo test' });
      // 当前是占位实现
      expect(json.data.message).toContain('not yet implemented');
    });

    it('工具不存在返回 404', async () => {
      const res = await app.request('/tools/non-existent-tool-67890/execute', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ params: {} }),
      });
      const json = await res.json();

      expect(res.status).toBe(404);
      expect(json.success).toBe(false);
      expect(json.error).toBe('Tool not found');
    });

    it('无 params 时使用空对象', async () => {
      const res = await app.request('/tools/bash/execute', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({}),
      });
      const json = await res.json();

      expect(res.status).toBe(200);
      expect(json.data.params).toEqual({});
    });

    it('无效 JSON 返回 500', async () => {
      const res = await app.request('/tools/bash/execute', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: 'invalid json',
      });
      const json = await res.json();

      expect(res.status).toBe(500);
      expect(json.success).toBe(false);
    });
  });
});