"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";

export function LoginForm() {
  const router = useRouter();
  const [isLoading, setIsLoading] = useState(false);
  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");

  async function onSubmit(event: React.FormEvent) {
    event.preventDefault();
    setIsLoading(true);
    setError("");

    try {
      const response = await fetch("/api/auth/login", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          username,
          password,
        }),
      });

      if (!response.ok) {
        throw new Error("Login failed");
      }

      const data = await response.json();
      
      if (data.success) {
        // Redirect to the dashboard
        router.push("/dashboard");
        router.refresh();
      } else {
        setError("Authentication failed. Please check your credentials and try again.");
      }
    } catch (error) {
      setError("Something went wrong. Please try again.");
    } finally {
      setIsLoading(false);
    }
  }

  return (
    <div className="grid gap-6">
      <form onSubmit={onSubmit}>
        <div className="grid gap-4">
          <div className="grid gap-2">
            <label htmlFor="username" className="text-sm font-medium">
              Username
            </label>
            <input
              id="username"
              placeholder="Username"
              type="text"
              className="px-3 py-2 border rounded-md"
              value={username}
              onChange={(e) => setUsername(e.target.value)}
              autoCapitalize="none"
              autoCorrect="off"
              disabled={isLoading}
            />
          </div>
          <div className="grid gap-2">
            <label htmlFor="password" className="text-sm font-medium">
              Password
            </label>
            <input
              id="password"
              placeholder="Password"
              type="password"
              className="px-3 py-2 border rounded-md"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              disabled={isLoading}
            />
          </div>
          {error && (
            <div className="text-red-500 text-sm">
              {error}
            </div>
          )}
          <button
            type="submit"
            className="px-4 py-2 bg-blue-500 text-white rounded-md hover:bg-blue-600 disabled:opacity-50"
            disabled={isLoading}
          >
            {isLoading ? "Signing in..." : "Sign In"}
          </button>
        </div>
      </form>
    </div>
  );
}