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frontend/app/register/page.tsx

@@ -0,0 +1,88 @@
+"use client";
+
+import { useState } from "react";
+import { useRouter } from "next/navigation";
+import Link from "next/link";
+import { apiRegister } from "@/lib/api";
+
+export default function RegisterPage() {
+  const router = useRouter();
+  const [username, setUsername] = useState("");
+  const [email, setEmail] = useState("");
+  const [password, setPassword] = useState("");
+  const [error, setError] = useState("");
+  const [loading, setLoading] = useState(false);
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError("");
+    setLoading(true);
+    try {
+      const res = await apiRegister(username, email, password);
+      if (res.id) {
+        router.push("/login");
+      } else {
+        setError(res.error || "注册失败");
+      }
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="max-w-md mx-auto mt-12">
+      <h1 className="text-2xl font-bold mb-6 text-center">注册</h1>
+      <form onSubmit={handleSubmit} className="space-y-4">
+        {error && (
+          <div className="p-3 rounded-lg bg-red-50 text-red-600 text-sm">{error}</div>
+        )}
+        <div>
+          <label className="block text-sm mb-1" style={{ color: "var(--text-secondary)" }}>用户名</label>
+          <input
+            type="text"
+            value={username}
+            onChange={(e) => setUsername(e.target.value)}
+            required
+            minLength={3}
+            maxLength={32}
+            className="w-full px-3 py-2 rounded-lg border"
+            style={{ borderColor: "var(--border)", background: "var(--bg)", color: "var(--text)" }}
+          />
+        </div>
+        <div>
+          <label className="block text-sm mb-1" style={{ color: "var(--text-secondary)" }}>邮箱（可选）</label>
+          <input
+            type="email"
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+            className="w-full px-3 py-2 rounded-lg border"
+            style={{ borderColor: "var(--border)", background: "var(--bg)", color: "var(--text)" }}
+          />
+        </div>
+        <div>
+          <label className="block text-sm mb-1" style={{ color: "var(--text-secondary)" }}>密码</label>
+          <input
+            type="password"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            required
+            minLength={6}
+            className="w-full px-3 py-2 rounded-lg border"
+            style={{ borderColor: "var(--border)", background: "var(--bg)", color: "var(--text)" }}
+          />
+        </div>
+        <button
+          type="submit"
+          disabled={loading}
+          className="w-full py-2 rounded-lg text-white disabled:opacity-50"
+          style={{ background: "var(--primary)" }}
+        >
+          {loading ? "注册中..." : "注册"}
+        </button>
+      </form>
+      <p className="text-center mt-4 text-sm" style={{ color: "var(--text-secondary)" }}>
+        已有账号？<Link href="/login" className="hover:underline" style={{ color: "var(--primary)" }}>去登录</Link>
+      </p>
+    </div>
+  );
+}