"use client";

import { useState, FormEvent, useRef, MouseEvent, useEffect } from "react";

interface AuthModalProps {
  isOpen: boolean;
  onClose: () => void;
}

export default function AuthModal({ isOpen, onClose }: AuthModalProps) {
  const [isLogin, setIsLogin] = useState<boolean>(true);
  const modalRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    if (isOpen) setIsLogin(true);
  }, [isOpen]);

  if (!isOpen) return null;

  const handleOverlayClick = (e: MouseEvent<HTMLDivElement>) => {
    if (modalRef.current && !modalRef.current.contains(e.target as Node)) {
      onClose();
    }
  };

  const handleSubmit = async (e: FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    const formData = new FormData(e.currentTarget);
    const email = formData.get("email") as string;
    const password = formData.get("password") as string;
    const name = isLogin ? undefined : (formData.get("name") as string);

    const endpoint = isLogin ? "/api/login" : "/api/signup";
    const body = isLogin ? { email, password } : { name: name!, email, password };

    try {
      const res = await fetch(endpoint, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(body),
      });
      if (res.ok) {
        console.log("Success!");
        onClose();
      } else {
        console.error("Error:", await res.text());
      }
    } catch (error) {
      console.error("Request failed:", error instanceof Error ? error.message : String(error));
    }
  };

  return (
    <div className="fixed inset-0 bg-black bg-opacity-70 flex items-center justify-center z-50" onClick={handleOverlayClick}>
      <div ref={modalRef} className="bg-white rounded-lg shadow-lg p-6 w-full max-w-md relative">
        <button onClick={onClose} className="absolute text-xl top-0 right-2 text-gray-500 hover:text-gray-700" aria-label="Close modal">
          ×
        </button>
        <h2 className="text-2xl font-bold text-center mb-4">{isLogin ? "Login" : "Sign Up"}</h2>

        {/* Form */}
        <form onSubmit={handleSubmit} className="space-y-4">
          {!isLogin && (
            <div>
              <label className="block text-sm font-medium text-gray-700">Full Name</label>
              <input
                type="text"
                name="name"
                className="mt-1 w-full p-2 border rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
                required={!isLogin}
              />
            </div>
          )}
          <div>
            <label className="block text-sm font-medium text-gray-700">Email</label>
            <input
              type="email"
              name="email"
              className="mt-1 w-full p-2 border rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
              required
            />
          </div>
          <div>
            <label className="block text-sm font-medium text-gray-700">Password</label>
            <input
              type="password"
              name="password"
              className="mt-1 w-full p-2 border rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
              required
            />
          </div>
          <button type="submit" className="w-full bg-blue-600 text-white p-2 rounded-md hover:bg-blue-700 transition">
            {isLogin ? "Login" : "Sign Up"}
          </button>
        </form>

        <p className="mt-4 text-center text-sm">
          {isLogin ? "Need an account?" : "Already have an account?"}{" "}
          <button onClick={() => setIsLogin(!isLogin)} className="text-blue-600 hover:underline">
            {isLogin ? "Sign Up" : "Login"}
          </button>
        </p>
      </div>
    </div>
  );
}