/**
 * 매매 시그널 알림 표시용 포맷·라벨
 */
import { getKoreanName } from './marketNameCache';
import { formatUnixDateTime, formatUnixClock, getDisplayTimezone } from './timezone';

export interface TradeSignalDisplaySource {
  market: string;
  signalType: 'BUY' | 'SELL';
  price: number;
  candleTime: number;
  strategyName?: string | null;
  strategyId?: number | null;
  executionType?: string;
  candleType?: string;
  receivedAt?: number;
}

export function parseMarket(market: string) {
  const parts = market.split('-');
  const fiat = parts[0] ?? 'KRW';
  const coin = parts.length > 1 ? parts.slice(1).join('-') : market;
  return { fiat, coin, code: market };
}

export function formatSignalPrice(price: number): string {
  if (!Number.isFinite(price) || price <= 0) return '—';
  return `₩${price.toLocaleString('ko-KR', { maximumFractionDigits: 0 })}`;
}

export function formatSignalTime(unixSec: number, withDate = true): string {
  if (!unixSec) return '—';
  const tz = getDisplayTimezone();
  if (!withDate) return formatUnixClock(unixSec, tz, true);
  return formatUnixDateTime(unixSec, tz);
}

export function getSignalTypeKo(type: 'BUY' | 'SELL'): string {
  return type === 'BUY' ? '매수' : '매도';
}

export function getSignalHeadline(item: TradeSignalDisplaySource): string {
  const korean = getKoreanName(item.market);
  const { coin } = parseMarket(item.market);
  const name = korean || coin;
  return `${name} ${getSignalTypeKo(item.signalType)} 알림`;
}

export function getExecutionLabel(executionType?: string, candleType?: string): string {
  const candle = candleType ?? '1m';
  const candleKo = candle === '1m' ? '1분봉' : candle;
  if (executionType === 'REALTIME_TICK') return `실시간 틱 · ${candleKo}`;
  if (executionType === 'CANDLE_CLOSE') return `봉 마감 · ${candleKo}`;
  return candleKo;
}

export function getMarketDisplayLine(market: string): { primary: string; secondary: string } {
  const korean = getKoreanName(market);
  const { code } = parseMarket(market);
  return {
    primary: korean || code,
    secondary: code,
  };
}

/** 상세 행 목록 (스낵바·목록 공통) */
export function buildSignalDetailRows(item: TradeSignalDisplaySource): Array<{ label: string; value: string; highlight?: boolean }> {
  const { primary, secondary } = getMarketDisplayLine(item.market);
  const rows: Array<{ label: string; value: string; highlight?: boolean }> = [
    { label: '종목', value: primary !== secondary ? `${secondary} · ${primary}` : secondary },
    { label: '매매 구분', value: `${getSignalTypeKo(item.signalType)} (${item.signalType})`, highlight: true },
    { label: '기준 가격', value: formatSignalPrice(item.price), highlight: true },
    { label: '캔들 시각', value: `${formatSignalTime(item.candleTime)} · ${item.candleType ?? '1m'}` },
  ];

  if (item.receivedAt && Math.abs(item.receivedAt - item.candleTime * 1000) > 2000) {
    rows.push({ label: '수신 시각', value: formatSignalTime(Math.floor(item.receivedAt / 1000)) });
  }

  rows.push(
    { label: '전략', value: item.strategyName?.trim() || (item.strategyId != null ? `전략 #${item.strategyId}` : '실시간 전략') },
    { label: '실행 방식', value: getExecutionLabel(item.executionType, item.candleType) },
  );

  return rows;
}