enabling login btw users

raggr-frontend/src/components/LoginScreen.tsx

@@ -0,0 +1,80 @@
+import { useState } from "react";
+import { userService } from "../api/userService";
+
+type LoginScreenProps = {
+  setAuthenticated: (isAuth: boolean) => void;
+};
+
+export const LoginScreen = ({ setAuthenticated }: LoginScreenProps) => {
+  const [username, setUsername] = useState<string>("");
+  const [password, setPassword] = useState<string>("");
+  const [error, setError] = useState<string>("");
+
+  const handleLogin = async () => {
+    if (!username || !password) {
+      setError("Please enter username and password");
+      return;
+    }
+
+    try {
+      const result = await userService.login(username, password);
+      localStorage.setItem("access_token", result.access_token);
+      localStorage.setItem("refresh_token", result.refresh_token);
+      setAuthenticated(true);
+      setError("");
+    } catch (err) {
+      setError("Login failed. Please check your credentials.");
+      console.error("Login error:", err);
+    }
+  };
+
+  return (
+    <div className="h-screen bg-opacity-20">
+      <div className="bg-white/85 h-screen">
+        <div className="flex flex-row justify-center py-4">
+          <div className="flex flex-col gap-4 min-w-xl max-w-xl">
+            <div className="flex flex-col gap-1">
+              <div className="flex flex-grow justify-center w-full bg-amber-400">
+                <h1 className="text-xl font-bold">
+                  I AM LOOKING FOR A DESIGNER. THIS APP WILL REMAIN UGLY UNTIL A
+                  DESIGNER COMES.
+                </h1>
+              </div>
+              <header className="flex flex-row justify-center gap-2 grow sticky top-0 z-10 bg-white">
+                <h1 className="text-3xl">ask simba!</h1>
+              </header>
+              <label htmlFor="username">username</label>
+              <input
+                type="text"
+                id="username"
+                name="username"
+                value={username}
+                onChange={(e) => setUsername(e.target.value)}
+                className="border border-s-slate-950 p-3 rounded-md"
+              />
+              <label htmlFor="password">password</label>
+              <input
+                type="password"
+                id="password"
+                name="password"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                className="border border-s-slate-950 p-3 rounded-md"
+              />
+              {error && (
+                <div className="text-red-600 font-semibold">{error}</div>
+              )}
+            </div>
+
+            <button
+              className="p-4 border border-blue-400 bg-blue-200 hover:bg-blue-400 cursor-pointer rounded-md flex-grow"
+              onClick={handleLogin}
+            >
+              login
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};