const express = require('express');
const { formatSize, createWebshareMcpServer } = require('../src/mcp-server');
const { registerMcpHttp } = require('../src/mcp-http');

describe('formatSize', () => {
  it('formats bytes', () => {
    expect(formatSize(0)).toBe('0 B');
    expect(formatSize(512)).toBe('512 B');
    expect(formatSize(1024)).toBe('1.0 KB');
    expect(formatSize(1536)).toBe('1.5 KB');
    expect(formatSize(1024 * 1024)).toBe('1.0 MB');
  });
});

describe('createWebshareMcpServer', () => {
  it('creates a server instance with credentials', () => {
    const server = createWebshareMcpServer({ username: 'u', password: 'p' });
    expect(server).toBeDefined();
    expect(server.server).toBeDefined();
  });
});

describe('registerMcpHttp', () => {
  it('registers POST /mcp on an express app', () => {
    const app = express();
    registerMcpHttp(app, { username: 'u', password: 'p', path: '/mcp' });
    const layer = app._router.stack.find(
      (l) => l.route && l.route.path === '/mcp' && l.route.methods.post
    );
    expect(layer).toBeTruthy();
  });
});