tremor-tracker/src/components/AuthModal.tsx

"use client";
import axios from "axios";
import { useStoreActions } from "@hooks/store";
import { FormEvent, MouseEvent, useEffect, useRef, useState } from "react";
import { ErrorRes } from "@appTypes/Axios";

interface AuthModalProps {
	isOpen: boolean; // bool for if the modal should be visible
	onClose: () => void; //A function that will be executed to close the modal
}

export default function AuthModal({ isOpen, onClose }: AuthModalProps) {
	const [isLogin, setIsLogin] = useState<boolean>(true);
	const modalRef = useRef<HTMLDivElement>(null);
	const [isFailed, setIsFailed] = useState<boolean>(false);
	const [failMessage, setFailMessage] = useState<string>();
	const setUser = useStoreActions((actions) => actions.setUser);

	useEffect(() => {
		if (isOpen) setIsLogin(true); // runs when isOpen changes, if it is true, the login is shown
	}, [isOpen]);

	if (!isOpen) return null; // if is open is false, the model isnt shown

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

	const handleSubmit = async (e: FormEvent<HTMLFormElement>) => {
		e.preventDefault();
		setIsFailed(false);

		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);

		try {
			const res = await axios.post(
				`/api/${isLogin ? "login" : "signup"}`,
				isLogin ? { email, password } : { name, email, password },
				{
					headers: { "Content-Type": "application/json" },
				}
			);

			if (res.status === 200) {
				setUser(res.data.user);
				onClose();
			} else {
				console.error("Unexpected response status:", res.status, res.data);
				setFailMessage("Unexpected error occurred");
				setIsFailed(true);
			}
		} catch (error) {
			const axiosError = error as ErrorRes;
			if (axiosError.response) {
				const { status, data } = axiosError.response;
				if (status >= 400 && status < 500) {
					console.log("4xx error:", data);
					setFailMessage(data.message || "Invalid request");
					setIsFailed(true);
				} else {
					console.error("Server error:", data);
					setFailMessage("Server error occurred");
					setIsFailed(true);
				}
			} else {
				console.error("Request failed:", axiosError.message);
				setFailMessage("Network error occurred");
				setIsFailed(true);
			}
		}
	};

	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={() => {
						setIsFailed(false);
						onClose();
					}}
					className="absolute text-xl top-0 right-2 text-neutral-500 hover:text-neutral-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-neutral-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-neutral-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-neutral-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>
					<div>
						{isFailed && (
							<div>
								<label className="block text-sm font-medium text-red-700">{failMessage}</label>
							</div>
						)}
					</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>
	);
}