import styled from '@emotion/styled';
import { Box, Button, FormControl, FormLabel, Stack, TextField } from '@mui/material';
import { useEffect, useRef, useState } from 'react';
import { useLocation, useNavigate } from 'react-router-dom';
import { rememberListVisit } from '../../utils/listNavigation';
import { toast } from 'react-toastify';
import { FormsApi } from '../../api/forms';
import { TasksApi } from '../../api/tasks';
import { FORM_TYPE_TRANSLATE } from '../../constants/constants';
import { ExportButton } from '../common/Buttons/ButtonsActions';
import { Chip } from '../styles/StyledChip';
import { DeletionMarkChip } from './DeletionMarkChip';
import { LastOpenedBadge } from './LastOpenedBadge';
import { IconWithContent } from './IconWithContent';
import Modal from './Modal/Modal';
import { CheckBoxCheckSvg, CheckBoxUncheckSvg, DateIcon, TableIcon } from './icons/icons';

import { TaskCard } from '../styles/TaskCard.style';


const CardHeader = styled.div`
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
`;

const TaskId = styled.div`
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1rem;
  letter-spacing: 0rem;
  text-align: left;
`;

const CardBody = styled.div`
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  justify-content: flex-start;
`;

const TaskTitle = styled.div`
  font-size: 1rem;
  font-weight: 500;
  color: var(--Text-Primary, #333);
  line-height: 1.4;
  margin: 0.375rem 0 0;
  padding: 0;
`;

export const TaskCardComponent = ({
	taskForm,
	isForm = false,
	fluidWidth = false,
	exportMode = false,
	isLoadingFile = false,
	onAddForExport,
	onExportClick,
	isLastOpened = false,
	isAdmin = false,
	onChanged,
	currentUserId = null,
	usersById = {},
}) => {
	const navigate = useNavigate();
	const location = useLocation();
	const cardRef = useRef(null);
	useEffect(() => {
		if (isLastOpened) cardRef.current?.scrollIntoView({ block: 'nearest' });
	}, [isLastOpened]);
	const { id, title, org_unit, form_type_code, year } = taskForm;
	const canHardDelete = taskForm.to_delete && taskForm.deleted_by !== currentUserId;

	const [isEditModalOpen, setEditModalOpen] = useState(false);
	const [editedTitle, setEditedTitle] = useState('');
	const [currentTypeCode, setCurrentTypeCode] = useState(FORM_TYPE_TRANSLATE[form_type_code] || '');
	const [isChecked, setIsChecked] = useState(false);
	const [confirmAction, setConfirmAction] = useState(null);
	const [actionLoading, setActionLoading] = useState(false);

	useEffect(() => {
		setIsChecked(false);
	}, [exportMode]);

	const handleOpenEdit = (event) => {
		event.stopPropagation();
		setEditedTitle(currentTypeCode);
		setEditModalOpen(true);
	};

	const handleCloseEdit = () => {
		setEditModalOpen(false);
	};

	const handleCheckboxClick = (event) => {
		event.stopPropagation();
		if (!isLoadingFile) {
			setIsChecked(!isChecked);
			onAddForExport(!isChecked);
		} else {
			toast.warning('Файл формируется!');
		}
	};

	const handleExportTask = (event) => {
		event.stopPropagation();
		onExportClick?.(id, title);
	};

	const openConfirmAction = (event, action) => {
		event.stopPropagation();
		setConfirmAction(action);
	};

	const closeConfirmAction = () => {
		if (!actionLoading) setConfirmAction(null);
	};

	const runConfirmedAction = async () => {
		if (!confirmAction) return;
		try {
			setActionLoading(true);
			if (confirmAction === 'mark') {
				await TasksApi.markForDeletion(id);
				toast.success('Задача помечена на удаление');
			}
			if (confirmAction === 'restore') {
				await TasksApi.restore(id);
				toast.success('Задача возвращена');
			}
			if (confirmAction === 'hardDelete') {
				await TasksApi.hardDelete(id);
				toast.success('Задача полностью удалена');
			}
			setConfirmAction(null);
			onChanged?.();
		} catch (error) {
			toast.error(error?.response?.data?.detail || 'Не удалось выполнить действие');
		} finally {
			setActionLoading(false);
		}
	};

	const actionTitle = {
		mark: 'Удалить задачу',
		restore: 'Вернуть задачу',
		hardDelete: 'Полностью удалить задачу',
	}[confirmAction];

	const actionText = {
		mark: 'Задача будет скрыта от пользователей. Админы смогут вернуть её или удалить окончательно.',
		restore: 'Задача снова станет доступна пользователям.',
		hardDelete: 'Будут удалены задача и все связанные данные. Это действие нельзя отменить.',
	}[confirmAction];

	const updateTask = async (nextTitle) => {
		try {
			await TasksApi.editTask(id, { title: nextTitle });
			setCurrentTypeCode(nextTitle);
			setEditModalOpen(false);
			toast.success('Название задачи обновлено');
		} catch (error) {
			toast.error(error?.response?.data?.detail || 'Не удалось обновить название задачи');
		}
	};

	const updateForm = async (nextTitle) => {
		try {
			await FormsApi.updateForm(id, { title: nextTitle });
			setCurrentTypeCode(nextTitle);
			setEditModalOpen(false);
		} catch (error) {
			toast.error(error?.response?.data?.detail || 'Не удалось обновить название формы');
		}
	};

	const handleSaveTitle = async () => {
		const nextTitle = editedTitle.trim();
		if (!nextTitle) {
			toast.error('Название не может быть пустым');
			return;
		}
		if (nextTitle === currentTypeCode) {
			setEditModalOpen(false);
			return;
		}

		if (isForm) {
			await updateForm(nextTitle);
			return;
		}

		await updateTask(nextTitle);
	};

	return (
		<>
			<TaskCard
				ref={cardRef}
				$fluidWidth={fluidWidth}
				$marked={Boolean(taskForm.to_delete)}
				onClick={(event) => {
					if (exportMode) {
						handleCheckboxClick(event);
					} else {
						if (!isForm && location.pathname === '/tasks') rememberListVisit('tasks', id, `${location.pathname}${location.search}`);
						navigate(`/${isForm ? 'form' : 'task'}/${id}`);
					}
				}}
				key={id}>
				<Box sx={{ width: '100%' }}>
					<CardHeader>
						<TaskId>ID: {id}</TaskId>
						<Stack direction='row' gap={0.75} alignItems='center'>
							{taskForm.to_delete && <DeletionMarkChip task={taskForm} usersById={usersById} />}
							{isLastOpened && <LastOpenedBadge sx={{ mb: 0 }}>Последняя открытая</LastOpenedBadge>}
						</Stack>
					</CardHeader>

					<TaskTitle>{org_unit?.title || 'Подразделение не указано'}</TaskTitle>
				</Box>

				<Stack
					direction='row'
					sx={{
						marginTop: 'auto',
						gap: '0.5rem',
						justifyContent: 'space-between',
						width: '100%',
						alignItems: 'flex-end',
					}}>
					<CardBody>
						<IconWithContent icon={<DateIcon />}>{year}</IconWithContent>
						<IconWithContent icon={<TableIcon />}>
							<Chip sx={{ background: 'transparent' }}>{currentTypeCode}</Chip>
						</IconWithContent>

					</CardBody>

					<Stack direction='row' gap={0.75} alignItems='center' onClick={(event) => event.stopPropagation()}>
						{isAdmin && !isForm && !exportMode && !taskForm.to_delete && (
							<Button size='small' variant='text' color='error' onClick={(event) => openConfirmAction(event, 'mark')}>
								Удалить
							</Button>
						)}
						{isAdmin && !isForm && !exportMode && taskForm.to_delete && (
							<>
								<Button size='small' variant='text' onClick={(event) => openConfirmAction(event, 'restore')}>
									Вернуть
								</Button>
								{canHardDelete && (
									<Button size='small' variant='text' color='error' onClick={(event) => openConfirmAction(event, 'hardDelete')}>
										Удалить
									</Button>
								)}
							</>
						)}
						{!isForm && !exportMode && !taskForm.to_delete && <ExportButton onClick={handleExportTask} />}
						{exportMode && <div>{isChecked ? <CheckBoxCheckSvg size='1.625rem' /> : <CheckBoxUncheckSvg size='1.625rem' />}</div>}
					</Stack>
				</Stack>
			</TaskCard>

			<Modal
				open={Boolean(confirmAction)}
				onClose={closeConfirmAction}
				title={actionTitle}
				size='small'
				actions={
					<>
						<Button variant='grey' onClick={closeConfirmAction} disabled={actionLoading}>
							Отменить
						</Button>
						<Button variant='contained' color={confirmAction === 'hardDelete' || confirmAction === 'mark' ? 'error' : 'primary'} onClick={runConfirmedAction} disabled={actionLoading}>
							Подтвердить
						</Button>
					</>
				}>
				{actionText}
			</Modal>
		</>
	);
};