import {
	Button,
	Group,
	Modal,
	Select,
	Stack,
	Text,
	Textarea,
	TextInput,
} from "@mantine/core";
import { DateInput } from "@mantine/dates";
import type { FC, FormEventHandler, ReactNode } from "react";
import { Controller, useFormContext } from "react-hook-form";
import { useTranslation } from "react-i18next";
import type { BankOperation } from "@/entities/bank-card";
import { formatMoney } from "@/shared/lib";
import classes from "./OperationForm.module.css";
import type { OperationValues } from "./OperationForm.types";

type Choice = { value: string; label: string };
type OperationFieldsProps = {
	editing: boolean;
	refundCardId: string;
	kind: OperationValues["kind"];
	cards: Choice[];
	targets: Choice[];
	categories: Choice[];
	defaultCategory: string;
	kinds: Choice[];
	dateInputValue: (value: string) => string;
	validDate: (value: string) => boolean;
	maxDate: () => string;
};
const OperationFields: FC<OperationFieldsProps> = (props) => {
	const { t } = useTranslation();
	const {
		control,
		register,
		setValue,
		formState: { errors, isSubmitting },
	} = useFormContext<OperationValues>();
	return (
		<Stack>
			<Controller
				control={control}
				name="kind"
				render={({ field }) => (
					<Select
						label={t("bank.kind")}
						required
						data={props.kinds}
						{...field}
						disabled={isSubmitting || props.editing}
						onChange={(value) => {
							field.onChange(value ?? "expense");
							if (value === "refund") setValue("cardId", props.refundCardId);
						}}
					/>
				)}
			/>
			<Controller
				control={control}
				name="cardId"
				render={({ field }) => (
					<Select
						label={t(
							props.kind === "transfer" ? "bank.source" : "bank.operationCard",
						)}
						required
						data={props.cards}
						{...field}
						disabled={isSubmitting || props.kind === "refund"}
						error={errors.cardId?.message}
					/>
				)}
			/>
			{props.kind === "transfer" && (
				<Controller
					control={control}
					name="targetCardId"
					render={({ field }) => (
						<Select
							label={t("bank.destination")}
							required
							data={props.targets}
							{...field}
							disabled={isSubmitting}
							error={errors.targetCardId?.message}
						/>
					)}
				/>
			)}
			<TextInput
				label={t("bank.amount")}
				required
				inputMode="decimal"
				{...register("amount")}
				error={errors.amount?.message}
			/>
			<Controller
				control={control}
				name="date"
				render={({ field }) => (
					<DateInput
						{...field}
						label={t("bank.date")}
						required
						valueFormat="DD.MM.YYYY"
						value={props.validDate(field.value) ? field.value : null}
						dateParser={(value) =>
							props.validDate(props.dateInputValue(value))
								? props.dateInputValue(value)
								: null
						}
						fixOnBlur={false}
						onInput={(event) =>
							field.onChange(props.dateInputValue(event.currentTarget.value))
						}
						onChange={(value) => field.onChange(value ?? "")}
						onBlur={(event) => {
							field.onChange(props.dateInputValue(event.currentTarget.value));
							field.onBlur();
						}}
						maxDate={props.maxDate()}
						popoverProps={{
							withinPortal: false,
							middlewares: { shift: { crossAxis: true } },
						}}
						error={errors.date?.message}
					/>
				)}
			/>
			{props.kind === "expense" && (
				<Controller
					control={control}
					name="categoryId"
					render={({ field }) => (
						<Select
							label={t("bank.category")}
							required
							data={props.categories}
							{...field}
							value={field.value || props.defaultCategory}
							disabled={isSubmitting}
							error={errors.categoryId?.message}
						/>
					)}
				/>
			)}
			<Textarea
				label={t("bank.description")}
				{...register("description")}
				error={errors.description?.message}
			/>
		</Stack>
	);
};
type RefundFieldsProps = {
	editing: boolean;
	expenses: Choice[];
	onSelect: (id: string) => void;
	limit: BankOperation["availableRefund"] | undefined;
};
const RefundFields: FC<RefundFieldsProps> = (props) => {
	const { t } = useTranslation();
	const {
		control,
		formState: { errors, isSubmitting },
	} = useFormContext<OperationValues>();
	return (
		<Stack>
			<Controller
				control={control}
				name="originalExpenseId"
				render={({ field }) => (
					<Select
						label={t("bank.expense")}
						required
						data={props.expenses}
						{...field}
						onChange={(value) => {
							field.onChange(value ?? "");
							props.onSelect(value ?? "");
						}}
						disabled={isSubmitting || props.editing}
						error={errors.originalExpenseId?.message}
					/>
				)}
			/>
			{props.limit && (
				<Text>
					{t("bank.availableRefund", { amount: formatMoney(props.limit) })}
				</Text>
			)}
			{props.editing && <Text>{t("bank.purchaseImmutable")}</Text>}
		</Stack>
	);
};

type OperationFormViewProps = {
	opened: boolean;
	pending: boolean;
	categoriesOpen: boolean;
	editing: boolean;
	onClose: () => void;
	onExitTransitionEnd: () => void;
	onCancel: () => void;
	onSubmit: FormEventHandler<HTMLFormElement>;
	fields: OperationFieldsProps;
	refund: RefundFieldsProps;
	loadingExpenses: boolean;
	emptyExpenses: boolean;
	sourcePage: number;
	previousDisabled: boolean;
	nextDisabled: boolean;
	onPrevious: () => void;
	onNext: () => void;
	onAddCategory: () => void;
	onReload?: () => void;
	latest?: { version: number; details: string; onAdopt: () => void };
	saveDisabled: boolean;
	refundFeedback?: ReactNode;
	categoriesFeedback?: ReactNode;
	feedback?: ReactNode;
};
const OperationFormView: FC<OperationFormViewProps> = (props) => {
	const { t } = useTranslation();
	return (
		<Modal
			opened={props.opened}
			onExitTransitionEnd={props.onExitTransitionEnd}
			onClose={props.onClose}
			title={t(props.editing ? "bank.editOperation" : "bank.addOperation")}
			closeOnEscape={!props.pending && !props.categoriesOpen}
			closeOnClickOutside={!props.pending && !props.categoriesOpen}
			closeButtonProps={{
				"aria-label": t("bank.close"),
				disabled: props.pending,
			}}
		>
			<form onSubmit={props.onSubmit}>
				<fieldset disabled={props.pending} className={classes.fieldset}>
					<Stack>
						<OperationFields {...props.fields} />
						{props.fields.kind === "refund" && (
							<>
								<RefundFields {...props.refund} />
								{props.loadingExpenses && (
									<Text role="status">{t("bank.loadingHistory")}</Text>
								)}
								{props.emptyExpenses && <Text>{t("bank.noPurchases")}</Text>}
								{!props.editing && (
									<Group>
										<Button
											variant="default"
											disabled={props.previousDisabled}
											onClick={props.onPrevious}
										>
											{t("bank.previous")}
										</Button>
										<Text>{t("bank.page", { page: props.sourcePage })}</Text>
										<Button
											variant="default"
											disabled={props.nextDisabled}
											onClick={props.onNext}
										>
											{t("bank.next")}
										</Button>
									</Group>
								)}
								{props.refundFeedback}
							</>
						)}
						{props.fields.kind === "expense" && (
							<Button variant="subtle" onClick={props.onAddCategory}>
								{t("bank.addCategory")}
							</Button>
						)}
						{props.categoriesFeedback}
						{props.feedback}
						{props.onReload && (
							<Button variant="default" onClick={props.onReload}>
								{t("bank.reloadRecord")}
							</Button>
						)}
						{props.latest && (
							<>
								<Text>
									{t("bank.versionHint", { details: props.latest.details })}
								</Text>
								<Button variant="default" onClick={props.latest.onAdopt}>
									{t("bank.adoptVersion", { version: props.latest.version })}
								</Button>
							</>
						)}
						<Group>
							<Button
								type="submit"
								loading={props.pending}
								disabled={props.saveDisabled}
							>
								{t("bank.save")}
							</Button>
							<Button variant="default" onClick={props.onCancel}>
								{t("bank.cancel")}
							</Button>
						</Group>
					</Stack>
				</fieldset>
			</form>
		</Modal>
	);
};

export { OperationFormView };