feat: added login page

modules/frontend/src/pages/LoginPage/LoginPage.tsx

@@ -0,0 +1,116 @@
+import React, { useState } from "react";
+import { AuthService } from "../../auth/services/AuthService";
+import { useNavigate } from "react-router-dom";
+
+export const LoginPage: React.FC = () => {
+  const navigate = useNavigate();
+  const [isLogin, setIsLogin] = useState(true); // true = login, false = signup
+  const [nickname, setNickname] = useState("");
+  const [password, setPassword] = useState("");
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setLoading(true);
+    setError(null);
+
+    try {
+      if (isLogin) {
+        const res = await AuthService.postAuthSignIn({ nickname, pass: password });
+        if (res.success) {
+          // TODO: сохранить JWT в localStorage/cookie
+          console.log("Logged in user id:", res.user_id);
+          navigate("/"); // редирект после успешного входа
+        } else {
+          setError(res.error || "Login failed");
+        }
+      } else {
+        const res = await AuthService.postAuthSignUp({ nickname, pass: password });
+        if (res.success) {
+          console.log("User signed up with id:", res.user_id);
+          setIsLogin(true); // переключаемся на login после регистрации
+        } else {
+          setError(res.error || "Sign up failed");
+        }
+      }
+    } catch (err: any) {
+      console.error(err);
+      setError(err?.message || "Something went wrong");
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4">
+      <div className="max-w-md w-full bg-white shadow-md rounded-lg p-8">
+        <h2 className="text-2xl font-bold mb-6 text-center">
+          {isLogin ? "Login" : "Sign Up"}
+        </h2>
+
+        {error && <div className="text-red-600 mb-4">{error}</div>}
+
+        <form onSubmit={handleSubmit} className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Nickname
+            </label>
+            <input
+              type="text"
+              value={nickname}
+              onChange={(e) => setNickname(e.target.value)}
+              className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"
+              required
+            />
+          </div>
+
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Password
+            </label>
+            <input
+              type="password"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"
+              required
+            />
+          </div>
+
+          <button
+            type="submit"
+            disabled={loading}
+            className="w-full bg-blue-600 text-white py-2 rounded-lg font-semibold hover:bg-blue-700 transition disabled:opacity-50"
+          >
+            {loading ? "Please wait..." : isLogin ? "Login" : "Sign Up"}
+          </button>
+        </form>
+
+        <div className="mt-4 text-center text-sm text-gray-600">
+          {isLogin ? (
+            <>
+              Don't have an account?{" "}
+              <button
+                onClick={() => setIsLogin(false)}
+                className="text-blue-600 hover:underline"
+              >
+                Sign Up
+              </button>
+            </>
+          ) : (
+            <>
+              Already have an account?{" "}
+              <button
+                onClick={() => setIsLogin(true)}
+                className="text-blue-600 hover:underline"
+              >
+                Login
+              </button>
+            </>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+};