import { zodResolver } from "@hookform/resolvers/zod";
import { useState } from "react";
import { useForm } from "react-hook-form";
import { useTranslation } from "react-i18next";

import { useBankMutations } from "../../api/mutations";
import { type BankCard, useBankCard } from "../../api/queries";
import { bankMoneyValue, bankToday } from "../../model/form-validation";
import { bankCardSchema, type BankCardValues } from "../../model/form.schema";
import { useBankFormFocus } from "../useBankFormFocus";

type BankCardFormProps = { card?: BankCard; onClose: () => void };

function useBankCardFormVm(props: BankCardFormProps) {
	useBankFormFocus();
	const [opened, setOpened] = useState(true);
	const { t } = useTranslation();
	const [intent] = useState(() => crypto.randomUUID());
	const [version, setVersion] = useState(props.card?.version ?? 1);
	const [error, setError] = useState<unknown>();
	const [latest, setLatest] = useState<BankCard>();
	const fresh = useBankCard(props.card?.id);
	const mutation = useBankMutations();

	const methods = useForm<BankCardValues>({
		defaultValues: {
			bankName: props.card?.bankName ?? "",
			lastFour: props.card?.lastFour ?? "",
			name: props.card?.name ?? "",
			openingBalance: props.card?.openingBalance.value ?? "0",
			openingDate: props.card?.openingDate ?? bankToday(),
			paymentSystem: props.card?.paymentSystem ?? "",
		},
		resolver: zodResolver(bankCardSchema),
	});

	const isPending
		= !opened
			|| methods.formState.isSubmitting
			|| (fresh.isFetching && Boolean(error));

	const onRequestClose = () => !isPending && setOpened(false);
	const dialogTitle = t(props.card ? "bank.editCard" : "bank.addCard");

	const onSubmit = methods.handleSubmit(async (values) => {
		setError(undefined);

		try {
			const metadata = {
				bankName:
					values.bankName
					|| null,
				lastFour:
					values.lastFour
					|| null,
				name: values.name,
				paymentSystem:
					values.paymentSystem
					|| null,
			};

			const financial = {
				openingBalance: {
					currency: "RUB" as const,
					value: bankMoneyValue(values.openingBalance),
				},
				openingDate: values.openingDate,
			};

			if (props.card)
				await mutation.updateCard.mutateAsync({
					body: {
						...metadata,
						...(!props.card.archivedAt && financial),
						version,
					},
					id: props.card.id,
				});
			else
				await mutation.createCard.mutateAsync({
					id: intent,
					...metadata,
					...financial,
				});
			setOpened(false);
		}
		catch (error_) {
			setError(error_);
		}
	});

	const onReloadRecord = async () => {
		const response = await fresh.refetch();
		if (response.data && !response.error) setLatest(response.data);
		else setError(response.error);
	};

	const onAdoptVersion = () => {
		if (!latest) return;
		setVersion(latest.version);
		setLatest(undefined);
		setError(undefined);
	};

	const onCancel = () => setOpened(false);

	return {
		dialogTitle,
		error,
		isPending,
		latest,
		methods,
		onAdoptVersion,
		onCancel,
		onReloadRecord,
		onRequestClose,
		onSubmit,
		opened,
		t,
		version,
	};
}

export { useBankCardFormVm };