import { DownloadOutlined, FullscreenExitOutlined, FullscreenOutlined } from '@ant-design/icons';
import { Button, ConfigProvider } from 'antd';
import { useCallback, useEffect, useRef, useState } from 'react';
import { useParams } from 'react-router-dom';
import { ApiError } from '../../../api/client';
import {
	exportChessConsolidationsResult,
	exportIntercompanyMatrix,
	fetchChessConsolidationsResult,
	fetchIntercompanyMatrix,
} from '../../../services/api/intercompanyMatrix';
import type {
	IntercompanyMatrixRequest,
	IntercompanyMatrixResponse,
	IntercompanyMatrixResultResponse,
	MatrixCompany,
} from '../../../types/api';
import type { VersionCard } from '../../../types/consolidations/version_members';
import { chessMatrixMode } from '../../../utils/chessMatrixMode';
import { chessMatrixRequest, isWholePerimeter } from '../../../utils/chessMatrixRequest';
import { saveBlob, xlsxFilename } from '../../../utils/download';
import { useNotificationApi } from '../../../utils/useNotification';
import { ConsolidationChessFormatTableFilter } from '../ConsolidationChessFormatTableFilter/ConsolidationChessFormatTableFilter';
import { ConsolidationChessResTable } from '../ConsolidationChessResTable/ConsolidationChessResTable';
import { ConsolidationChessTable } from '../ConsolidationChessTable/ConsolidationChessTable';
import { ConsolidationChessTableFilter } from '../ConsolidationChessTableFilter/ConsolidationChessTableFilter';

export const ChessContent = ({ card }: { card: VersionCard | null }) => {
	const { version_id } = useParams<{ version_id: string }>();
	const notification = useNotificationApi();

	const [data, setData] = useState<IntercompanyMatrixResponse | null>(null);
	const [loading, setLoading] = useState(false);
	const [matrixExportLoading, setMatrixExportLoading] = useState(false);
	const [resExportLoading, setResExportLoading] = useState(false);
	const [companies, setCompanies] = useState<string[]>([]);
	// варианты фильтра «Компании» — весь периметр версии; при выборе компаний ответ сужен и их не меняет
	const [perimeter, setPerimeter] = useState<MatrixCompany[]>([]);
	const [decimals, setDecimals] = useState(2);
	const [units, setUnits] = useState('thousand');
	const [debit, setDebit] = useState<string[]>([]);
	const [credit, setCredit] = useState<string[]>([]);

	const [chessResData, setChessResData] = useState<IntercompanyMatrixResultResponse | null>(null);
	const [chessResUnits, setChessResUnits] = useState('thousand');
	const [chessResDecimals, setChessResDecimals] = useState(2);
	const [chessResLoading, setChessResLoading] = useState(false);

	const chessTableRef = useRef<HTMLDivElement>(null);
	const resTableRef = useRef<HTMLDivElement>(null);
	const [isChessFullscreen, setIsChessFullscreen] = useState(false);
	const [isResFullscreen, setIsResFullscreen] = useState(false);

	const toggleFullscreen = async (ref: React.RefObject<HTMLDivElement>, setFullscreen: (val: boolean) => void) => {
		if (!ref.current) return;
		try {
			if (!document.fullscreenElement) {
				await ref.current.requestFullscreen();
				setFullscreen(true);
			} else {
				await document.exitFullscreen();
				setFullscreen(false);
			}
		} catch (e) {
			notification.error({
				description: e instanceof Error ? e.message : 'Не удалось переключить полноэкранный режим',
			});
		}
	};

	useEffect(() => {
		const handleFullscreenChange = () => {
			if (!document.fullscreenElement) {
				setIsChessFullscreen(false);
				setIsResFullscreen(false);
			}
		};
		document.addEventListener('fullscreenchange', handleFullscreenChange);
		return () => document.removeEventListener('fullscreenchange', handleFullscreenChange);
	}, []);

	const matrixMode = chessMatrixMode(debit, credit);
	const isHalfFiltered = matrixMode === 'half';

	const loadData = useCallback(
		async (vId: string, request: IntercompanyMatrixRequest, isActual: () => boolean) => {
			setLoading(true);
			try {
				const res = await fetchIntercompanyMatrix(vId, request);
				if (isActual()) {
					setData(res);
					if (isWholePerimeter(request)) {
						setPerimeter(res.companies);
					}
				}
			} catch (e) {
				if (isActual() && e instanceof ApiError) {
					notification.error({ description: e.message });
				}
			} finally {
				if (isActual()) {
					setLoading(false);
				}
			}
		},
		[notification],
	);
	const loadResData = useCallback(
		async (vid: string) => {
			setChessResLoading(true);
			try {
				const res = await fetchChessConsolidationsResult(vid);
				setChessResData(res);
			} catch (e) {
				if (e instanceof ApiError) {
					notification.error({ description: e.message });
				}
			} finally {
				setChessResLoading(false);
			}
		},
		[notification],
	);

	const versionInfo = card ? { groupName: card.company_group.name, year: card.year, quarter: card.quarter } : null;

	const download = async () => {
		if (!version_id) {
			return;
		}
		setMatrixExportLoading(true);
		try {
			// выгрузка по тем же счетам и компаниям, что на экране: итоги в xlsx совпадают с таблицей
			const { blob, filename } = await exportIntercompanyMatrix(version_id, chessMatrixRequest(debit, credit, companies));
			saveBlob(blob, filename ?? xlsxFilename('Шахматка', versionInfo));
		} catch (e) {
			if (e instanceof ApiError) {
				notification.error({ description: e.message });
			}
		} finally {
			setMatrixExportLoading(false);
		}
	};
	const downloadResTable = async () => {
		if (!version_id) {
			return;
		}
		setResExportLoading(true);
		try {
			const { blob, filename } = await exportChessConsolidationsResult(version_id);
			saveBlob(blob, filename ?? xlsxFilename('Результирующая_таблица_ВГО', versionInfo));
		} catch (e) {
			if (e instanceof ApiError) {
				notification.error({ description: e.message });
			}
		} finally {
			setResExportLoading(false);
		}
	};

	useEffect(() => {
		// выбрана только одна сторона Дт/Кт — запрос не шлём, таблица показывает подсказку
		if (!version_id || isHalfFiltered) return;

		let isMounted = true;
		const isActual = () => isMounted;

		loadData(version_id, chessMatrixRequest(debit, credit, companies), isActual);

		return () => {
			isMounted = false;
			setLoading(false);
		};
	}, [version_id, debit, credit, companies, isHalfFiltered, loadData]);

	useEffect(() => {
		if (!version_id) return;
		loadResData(version_id);
	}, [version_id, loadResData]);

	return (
		<ConfigProvider getPopupContainer={() => (document.fullscreenElement as HTMLElement) || document.body}>
			<div
				style={{
					display: 'flex',
					flexDirection: 'column',
					overflowY: 'auto',
					overflowX: 'hidden',
					gap: 24,
					paddingBottom: 32,
					width: '100%',
				}}>
				<div
					ref={chessTableRef}
					style={{
						backgroundColor: isChessFullscreen ? '#fff' : 'transparent',
						padding: isChessFullscreen ? 6 : 0,
						height: isChessFullscreen ? '100vh' : 'auto',
						overflow: isChessFullscreen ? 'hidden' : 'visible',
						display: 'flex',
						flexDirection: 'column',
					}}>
					<ConsolidationChessTable
						data={data}
						loading={loading}
						decimals={decimals}
						units={units}
						isFullscreen={isChessFullscreen}
						isHalfFiltered={isHalfFiltered}
						toolbar={
							<div
								style={{
									display: 'flex',
									justifyContent: 'space-between',
									alignItems: 'center',
									width: '100%',
									flexWrap: 'wrap',
									gap: 16,
								}}>
								<div style={{ display: 'flex', alignItems: 'flex-start', flexWrap: 'wrap', gap: 16, flex: '1 1 auto' }}>
									<ConsolidationChessTableFilter
										companies={companies}
										onCompaniesChange={setCompanies}
										debit={debit}
										onDebitChange={setDebit}
										credit={credit}
										onCreditChange={setCredit}
										allCompanies={perimeter}
										year={card?.year}
										quarter={card?.quarter}
									/>
									<div
										style={{
											width: 1,
											height: 50,
											backgroundColor: '#e5e7eb',
										}}
									/>
									<ConsolidationChessFormatTableFilter
										decimals={decimals}
										units={units}
										onDecimalsChange={setDecimals}
										onUnitsChange={setUnits}
									/>
								</div>
								<div style={{ display: 'flex', gap: 8, marginTop: 8 }}>
									<Button disabled={isHalfFiltered} loading={matrixExportLoading} onClick={() => download()} icon={<DownloadOutlined />}>
										Экспорт
									</Button>
									<Button
										onClick={() => toggleFullscreen(chessTableRef, setIsChessFullscreen)}
										icon={isChessFullscreen ? <FullscreenExitOutlined /> : <FullscreenOutlined />}>
										{isChessFullscreen ? 'Свернуть' : 'На весь экран'}
									</Button>
								</div>
							</div>
						}
					/>
				</div>

				<div
					ref={resTableRef}
					style={{
						backgroundColor: isResFullscreen ? '#fff' : 'transparent',
						padding: isResFullscreen ? 6 : 0,
						height: isResFullscreen ? '100vh' : 'auto',
						overflow: isResFullscreen ? 'hidden' : 'visible',
						display: 'flex',
						flexDirection: 'column',
					}}>
					<ConsolidationChessResTable
						data={chessResData}
						loading={chessResLoading}
						decimals={chessResDecimals}
						units={chessResUnits}
						isFullscreen={isResFullscreen}
						toolbar={
							<div
								style={{
									display: 'flex',
									justifyContent: 'space-between',
									alignItems: 'center',
									width: '100%',
									flexWrap: 'wrap',
									gap: 16,
								}}>
								<div style={{ display: 'flex', alignItems: 'flex-start', flexWrap: 'wrap', gap: 16, flex: '1 1 auto' }}>
									<ConsolidationChessFormatTableFilter
										decimals={chessResDecimals}
										units={chessResUnits}
										onDecimalsChange={setChessResDecimals}
										onUnitsChange={setChessResUnits}
									/>
								</div>
								<div style={{ display: 'flex', gap: 8, marginTop: 8 }}>
									<Button loading={resExportLoading} onClick={() => downloadResTable()} icon={<DownloadOutlined />}>
										Экспорт
									</Button>
									<Button
										onClick={() => toggleFullscreen(resTableRef, setIsResFullscreen)}
										icon={isResFullscreen ? <FullscreenExitOutlined /> : <FullscreenOutlined />}>
										{isResFullscreen ? 'Свернуть' : 'На весь экран'}
									</Button>
								</div>
							</div>
						}
					/>
				</div>
			</div>
		</ConfigProvider>
	);
};