"use strict";

const form = document.querySelector(".input-wrapper");

const nipError = document.querySelector(".nip-error");
const emailError = document.querySelector(".email-error");
const passwordError = document.querySelector(".password-error");
const confirmPasswordError = document.querySelector(".confirm-error");
const phoneNumberError = document.querySelector(".phone-error");
const zipError = document.querySelector(".postal-error");
const deliveryZipError = document.querySelector(".delivery-zip-error");
const deliveryDataCheckbox = document.querySelector("#checkboxDeliveryData");
const deliveryContainer = document.querySelector(".deliveryContainer");


const passwordValidation = (password) => {
	return password.length >= 5;
};

function phoneNumberValidation(phoneNumber) {
	// Check if phoneNumber is not empty
	if (!phoneNumber) {
		return false;
	}

	// Check if '+' is not at the first position
	if (phoneNumber[0] === "+" && phoneNumber.indexOf("+", 1) !== -1) {
		return false;
	}

	// Remove '-' characters
	const cleanedPhoneNumber = phoneNumber.replace(/-/g, "");

	// Check if cleanedPhoneNumber has at least 9 digits
	return /^[\d+]{9,}$/.test(cleanedPhoneNumber);
}

const passwordConfirmationValidation = (password, confirmPassword) => {
	return password === confirmPassword;
};

const emailValidation = (email) => {
	const emailRegex = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}$/;
	return emailRegex.test(email);
};

function zipValidation(zipCode) {
	// Polish zip code pattern
	const pattern = /^[0-9]{2}-[0-9]{3}$/;

	return pattern.test(zipCode);
}

function deliveryZipCodeValidation(zipCode) {
	// Polish zip code pattern
	const pattern = /^[0-9]{2}-[0-9]{3}$/;

	return pattern.test(zipCode);
}

function nipValidation(nip) {
	if (typeof nip !== "string") return false;

	nip = nip.replace(/[ \-]/gi, "");

	let weight = [6, 5, 7, 2, 3, 4, 5, 6, 7];
	let sum = 0;
	let controlNumber = parseInt(nip.substring(9, 10));
	let weightCount = weight.length;
	for (let i = 0; i < weightCount; i++) {
		sum += parseInt(nip.substr(i, 1)) * weight[i];
	}

	return sum % 11 === controlNumber;
}

function deliveryFieldsValidation(values) {
	const deliveryFields = Object.keys(values).filter((key) =>
		key.includes("delivery")
	);
	const filledDeliveryFields = deliveryFields.filter((field) =>
		Boolean(values[field])
	);

	if (
		filledDeliveryFields.length > 0 &&
		filledDeliveryFields.length !== deliveryFields.length
	) {
		return false;
	}

	return true;
}

const postData = async (values) => {
	const data = {
		request:"add_new_b2b_temp_user",
		city: values.city,
		nip: values.nip,
		phoneNumber: values.phoneNumber,
		companyName: values.companyName,
		street: values.street,
		postalCode: values.postalCode,
		email: values.email,
		password: values.password,
		deliveryCity: values.deliveryCity,
		deliveryAddress: values.deliveryAddress,
		deliveryPostalCode: values.deliveryPostalCode,
	};
	const response = await fetch(
		"https://www.hurtopony.pl/scripts/endpoints/add_b2b_user.php",
		{
			method: "POST",
			headers: {
				"Content-Type": "application/json",
			},
			body: JSON.stringify(data),
		}
	);
	return response.json(); // Return the response as a JSON object
};

deliveryDataCheckbox.addEventListener("change", (event) => {
	if (event.target.checked) {
		deliveryContainer.classList.add("hidden");
	} else {
		deliveryContainer.classList.remove("hidden");
	}
});

form.addEventListener("submit", async (event) => {
	event.preventDefault();
	const values = Array.from(event.target.elements).reduce((acc, input) => {
		if (input.name) {
			acc[input.name] = input.value;
		}
		return acc;
	}, {});

	if (!emailValidation(values.email)) {
		emailError.textContent = "Wpisz poprawny adres email";
		return;
	} else if (!passwordValidation(values.password)) {
		passwordError.textContent = "Hasło musi mieć minimum 5 znaków";
		return;
	} else if (!zipValidation(values.postalCode)) {
		zipError.textContent = "Wpisz poprawny kod pocztowy";
		return;
	} else if (
		!passwordConfirmationValidation(values.password, values.confirmPassword)
	) {
		confirmPasswordError.textContent = "Hasła nie są takie same";
		return;
	} else if (!phoneNumberValidation(values.phoneNumber)) {
		phoneNumberError.textContent = "Wpisz poprawny numer telefonu";
		return;
	} else if (!nipValidation(values.nip)) {
		nipError.textContent = "Wpisz poprawny NIP";
		return;
	} else if (!deliveryFieldsValidation(values)) {
		deliveryZipError.textContent = "Uzupełnij wszystkie pola dostawy";
		if (!deliveryZipCodeValidation(values.deliveryPostalCode)) {
			deliveryZipError.textContent = "Wpisz poprawny kod pocztowy";
			return;
		}
		return;
	} else {
		nipError.textContent = "";
		emailError.textContent = "";
		passwordError.textContent = "";
		confirmPasswordError.textContent = "";
		phoneNumberError.textContent = "";
		zipError.textContent = "";
		deliveryZipError.textContent = "";
	}

	const response = await postData(values);

	if (response.success === 0) {
		document.querySelector(".error-form-response").classList.remove("hidden");
		setTimeout(() => {
			document.querySelector(".error-form-response").classList.add("hidden");
		}, 4000);
	} else {
		form.reset();
		document.querySelector(".form-response").classList.remove("hidden");
		setTimeout(() => {
			document.querySelector(".form-response").classList.add("hidden");
		}, 4000);
	}
});