"use client";
import React, { useState } from "react";
import {useCreateUserWithEmailAndPassword} from "react-firebase-hooks/auth";
import {auth, db} from '../../firebase/config';
import Link from "next/link"; 
import { sendEmailVerification } from "firebase/auth";
import { collection, doc, getDoc, setDoc } from 'firebase/firestore';

export default function SignUp() {
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState('');
  const [success, setSuccess] = useState('');

  const [createUserWithEmailAndPassword] = useCreateUserWithEmailAndPassword(auth);
  const handleSignUp = async () => {
    setError('');
    if (!email.includes('@')) {
      setError('Enter a valid email address.');
      return;
    }
    if (password.length < 8) {
      setError('Password must be at least 8 characters long.');
      return;
    }


    try {
      const res = await createUserWithEmailAndPassword(email, password); // Pass auth as the first parameter
      if (res && res.user) {
        await sendEmailVerification(res.user);
        setEmail("");
        setPassword("");
        setSuccess("Email verification has been sent.");
        if(res.user.emailVerified){
          await setDoc(doc(db, "users", res.user.uid), {
            email: res.user.email,
            userId: res.user.uid,
          });
        }
      } else {
        setError("Failed to create user. Please try again.");
      }
    } catch (error) {
      console.error(error);
      setError("An error occurred.");
    }
  };


  return (
      <div className="container mx-auto p-4">
        <div className="box bg-gray-100 p-4 rounded-lg shadow-md">
        {error && <p className="text-red-500 text-sm mb-3">{error}</p>}
        {success && <p className="text-green-500 text-sm mb-3">{success}</p>}
          <div className="mb-4">
            <label className="block text-gray-700 text-sm font-bold mb-2" htmlFor="email">
            Email
            </label>
            <input
              type="email"
              placeholder="Email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 leading-tight focus:outline-none focus:shadow-outline"/>
          </div>
          <div className="mb-2">
            <label className="block text-gray-700 text-sm font-bold mb-2" htmlFor="password">
              Password  
            </label>
            <input
              type="password"
              placeholder="Password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 mb-3 leading-tight focus:outline-none focus:shadow-outline"            />
          </div>
          <div className="mt-1 text-center mb-3">
            <p className="text-gray-700 text-sm">
              Already have an account?{" "}
              <Link href="/login" className="text-[#63b2fc] hover:underline">
                Log In
              </Link>
            </p>
          </div>
          <button 
            onClick={handleSignUp}
            className="bg-[#63b2fc] hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline w-full"          >
            Sign Up
          </button>
        </div>
      </div>

    //       <div className="mb-2">
    //         <label className="block text-gray-700 text-sm font-bold mb-2" htmlFor="password">
    //           Password
    //         </label>
    //         <input
    //           type="password"
    //           id="password"
    //           value={password}
    //           onChange={(e) => setPassword(e.target.value)}
    //           className="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 mb-3 leading-tight focus:outline-none focus:shadow-outline"
    //           required
    //         />
    //         {/*
    //         {error && <p className="text-red-500 text-xs italic">{error}</p>} */}
    //       </div>


    //       <div className="flex items-center justify-between">
    //         <button
    //           type="submit"
    //           className="bg-[#63b2fc] hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline w-full"
    //         >
    //           Sign Up
    //         </button>
    //       </div>
    //     </form>
    //   </div>
    // </div>
  );
}