import { NextRequest, NextResponse } from 'next/server'
import { config } from './lib/config'

export function middleware(req: NextRequest) {
  const url = new URL(req.url)
  
  // Skip auth for certain paths (same logic as original Express app)
  if (
    url.pathname.startsWith('/api/') ||
    url.pathname.startsWith('/screenshots/') ||
    url.pathname.startsWith('/downloads/') ||
    url.pathname.startsWith('/manifest.json') ||
    url.pathname.startsWith('/sw.js') ||
    url.pathname.includes('favicon.png') ||
    url.pathname.includes('install') ||
    url.pathname.includes('WinupdateCore') ||
    req.method === 'POST' ||
    url.pathname.startsWith('/_next/') ||  // Next.js static files
    url.pathname.startsWith('/api-test')  // API test page (for development)
  ) {
    return NextResponse.next()
  }

  // For all other paths, require authentication
  const authHeader = req.headers.get('authorization')

  if (!authHeader) {
    return new NextResponse('Authentication required', {
      status: 401,
      headers: {
        'WWW-Authenticate': 'Basic realm="Restricted Access"'
      }
    })
  }

  try {
    const auth = Buffer.from(authHeader.split(' ')[1], 'base64').toString()
    const [username, password] = auth.split(':')

    if (username === config.auth.username && password === config.auth.password) {
      return NextResponse.next()
    } else {
      return new NextResponse('Authentication failed', {
        status: 401,
        headers: {
          'WWW-Authenticate': 'Basic realm="Restricted Access"'
        }
      })
    }
  } catch {
    return new NextResponse('Invalid authentication', {
      status: 401,
      headers: {
        'WWW-Authenticate': 'Basic realm="Restricted Access"'
      }
    })
  }
}

// 配置中间件匹配的路径
export const config_middleware = {
  matcher: [
    /*
     * Match all request paths except for the ones starting with:
     * - api (API routes)
     * - _next/static (static files)
     * - _next/image (image optimization files)
     * - favicon.ico (favicon file)
     */
    '/((?!_next/static|_next/image|favicon.ico|manifest.json|sw.js).*)',
  ],
}