feat: add login page and API

app/api/login/route.ts

@@ -0,0 +1,23 @@
+// app/api/login/route.ts
+import { NextResponse } from 'next/server';
+import { AUTH_USERNAME, AUTH_PASSWORD, COOKIE_NAME, COOKIE_MAX_AGE } from '@/lib/constants';
+
+export async function POST(request: Request) {
+  const body = await request.json();
+  const { username, password } = body;
+
+  if (username === AUTH_USERNAME && password === AUTH_PASSWORD) {
+    const response = NextResponse.json({ success: true });
+    response.cookies.set(COOKIE_NAME, 'ok', {
+      httpOnly: true,
+      maxAge: COOKIE_MAX_AGE,
+      path: '/',
+    });
+    return response;
+  }
+
+  return NextResponse.json(
+    { error: 'Invalid credentials' },
+    { status: 401 }
+  );
+}

app/login/page.tsx

@@ -0,0 +1,84 @@
+// app/login/page.tsx
+'use client';
+
+import { useState } from 'react';
+import { useRouter } from 'next/navigation';
+import { COOKIE_NAME, COOKIE_MAX_AGE } from '@/lib/constants';
+
+export default function LoginPage() {
+  const router = useRouter();
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError('');
+
+    // 这里应该调用 API 验证，简化起见直接比对
+    // 实际项目中应该使用 API route 进行验证
+    const response = await fetch('/api/login', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ username, password }),
+    });
+
+    if (response.ok) {
+      router.push('/download');
+    } else {
+      setError('用户名或密码错误');
+    }
+  };
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-gray-50">
+      <div className="max-w-md w-full bg-white rounded-lg shadow-md p-8">
+        <h1 className="text-2xl font-bold text-center mb-6">资源下载</h1>
+        <h2 className="text-lg text-gray-600 text-center mb-6">登录</h2>
+
+        {error && (
+          <div className="bg-red-50 text-red-600 px-4 py-3 rounded mb-4">
+            {error}
+          </div>
+        )}
+
+        <form onSubmit={handleSubmit} className="space-y-4">
+          <div>
+            <label htmlFor="username" className="block text-sm font-medium text-gray-700 mb-2">
+              用户名
+            </label>
+            <input
+              type="text"
+              id="username"
+              value={username}
+              onChange={(e) => setUsername(e.target.value)}
+              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+              required
+            />
+          </div>
+
+          <div>
+            <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-2">
+              密码
+            </label>
+            <input
+              type="password"
+              id="password"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+              required
+            />
+          </div>
+
+          <button
+            type="submit"
+            className="w-full bg-blue-600 text-white py-2 px-4 rounded-md hover:bg-blue-700 transition-colors"
+          >
+            登录
+          </button>
+        </form>
+      </div>
+    </div>
+  );
+}