'use client';

import { use, useEffect, useRef, useState } from 'react';
import { useDonationHub } from '@/hooks/useDonationHub';
import { fetchApi } from '@/lib/utils/client';
import './style.scss';

type Props = {
	params: Promise<{ widgetToken: string }>;
	searchParams: Promise<{ [key: string]: string|string[]|undefined }>;
};

type RankListResponse = {
	list: { rank: number; sponsorMemberID: number; sponsorName: string; totalAmount: number; donationCount: number }[];
};

type RankStyleConfig = {
	id: number;
	title: string;
	theme: number;
	period: number;
	isShowAmount: boolean;
	maxRankCount: number;
	titleFontFamily: string|null;
	titleFontSizePx: number;
	titleFontColor: string;
	rank1FontFamily: string|null;
	rank1FontSizePx: number;
	rank1FontColor: string;
	rank2FontFamily: string|null;
	rank2FontSizePx: number;
	rank2FontColor: string;
	rank3FontFamily: string|null;
	rank3FontSizePx: number;
	rank3FontColor: string;
	isShowDonationCount: boolean;
	isActive: boolean;
};

export default function RankPage({ params, searchParams }: Props) {
	const { widgetToken } = use(params);
	const sp = use(searchParams);
	const configID = typeof sp.configID === 'string' ? parseInt(sp.configID, 10) : null;
	const hubUrl = process.env.NEXT_PUBLIC_API_URL + '/hubs/donation';
	const { ranking, setRanking } = useDonationHub(widgetToken, hubUrl);
	const [styleCfg, setStyleCfg] = useState<RankStyleConfig|null>(null);
	const widgetRef = useRef<HTMLDivElement>(null);

	// 스타일 config 로드
	useEffect(() => {
		const qs = configID ? `?configID=${configID}` : '';
		fetchApi<RankStyleConfig>(`/api/widget/rank/config/${widgetToken}${qs}`, { silent: true }).then(res => {
			if (res.data) {
				setStyleCfg(res.data);
			}
		}).catch(() => {});
	}, [widgetToken, configID]);

	// 순위 데이터 로드
	useEffect(() => {
		const qs = configID ? `?configID=${configID}` : '';
		fetchApi<RankListResponse>(`/api/widget/rank/by-token/${widgetToken}${qs}`, { silent: true }).then(res => {
			if (res.data?.list) {
				setRanking(res.data.list);
			}
		}).catch(() => {});
	}, [widgetToken, configID, setRanking]);

	// CSS variables 적용
	useEffect(() => {
		if (!widgetRef.current) {
			return;
		}
		const el = widgetRef.current;
		el.style.setProperty('--rank-title-font-family', styleCfg?.titleFontFamily ?? 'inherit');
		el.style.setProperty('--rank-title-font-size', `${styleCfg?.titleFontSizePx ?? 18}px`);
		el.style.setProperty('--rank-title-color', styleCfg?.titleFontColor ?? '#FFFFFF');
		el.style.setProperty('--rank-1-font-family', styleCfg?.rank1FontFamily ?? 'inherit');
		el.style.setProperty('--rank-1-font-size', `${styleCfg?.rank1FontSizePx ?? 15}px`);
		el.style.setProperty('--rank-1-color', styleCfg?.rank1FontColor ?? '#FFD700');
		el.style.setProperty('--rank-2-font-family', styleCfg?.rank2FontFamily ?? 'inherit');
		el.style.setProperty('--rank-2-font-size', `${styleCfg?.rank2FontSizePx ?? 15}px`);
		el.style.setProperty('--rank-2-color', styleCfg?.rank2FontColor ?? '#C0C0C0');
		el.style.setProperty('--rank-3-font-family', styleCfg?.rank3FontFamily ?? 'inherit');
		el.style.setProperty('--rank-3-font-size', `${styleCfg?.rank3FontSizePx ?? 15}px`);
		el.style.setProperty('--rank-3-color', styleCfg?.rank3FontColor ?? '#CD7F32');
	}, [styleCfg]);

	const title = styleCfg?.title ?? '후원 순위';
	const isShowAmount = styleCfg?.isShowAmount ?? true;
	const isShowCount = styleCfg?.isShowDonationCount ?? false;

	return (
		<div ref={widgetRef} className="rank-widget">
			<div className="rank-title">{title}</div>
			<div className="rank-list">
				{ranking.map(item => {
					const badgeClass = item.rank <= 3 ? `badge-${item.rank}` : 'badge-default';
					return (
						<div key={`${item.rank}-${item.sponsorMemberID}`} className={`rank-item rank-${item.rank}`}>
							<div className={`rank-badge ${badgeClass}`}>{item.rank}</div>
							<div className="rank-name">{item.sponsorName}</div>
							{isShowAmount && (
								<div className="rank-amount">
									{item.totalAmount.toLocaleString()}원
									{isShowCount && ` (${item.donationCount}회)`}
								</div>
							)}
						</div>
					);
				})}
			</div>
		</div>
	);
}