import { useState } from "react";
import { login } from "../api";

export function Login({ onLoggedIn }: { onLoggedIn: () => void }) {
  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState<string | null>(null);
  const [submitting, setSubmitting] = useState(false);

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    setError(null);
    setSubmitting(true);
    try {
      await login(username, password);
      onLoggedIn();
    } catch (err) {
      setError(err instanceof Error ? err.message : "Login failed");
    } finally {
      setSubmitting(false);
    }
  }

  return (
    <div className="login-page">
      <form className="login-form" onSubmit={handleSubmit}>
        <h1>Homelab Monitor</h1>
        <input
          type="text"
          placeholder="Username"
          value={username}
          onChange={(e) => setUsername(e.target.value)}
          autoFocus
        />
        <input
          type="password"
          placeholder="Password"
          value={password}
          onChange={(e) => setPassword(e.target.value)}
        />
        {error && <p className="error">{error}</p>}
        <button type="submit" disabled={submitting}>
          {submitting ? "Signing in…" : "Sign in"}
        </button>
      </form>
    </div>
  );
}