const normalizeSymbol = (symbol) => {
  if (typeof symbol !== "string") {
    return "";
  }
  return symbol.trim().toUpperCase();
};

export const normalizeTickerSymbols = (symbols, previousTickers = []) => {
  if (!Array.isArray(symbols) || symbols.length === 0) {
    return previousTickers;
  }

  return symbols
    .map(normalizeSymbol)
    .filter(Boolean)
    .reduce((acc, symbol) => {
      const existing = acc.find((ticker) => ticker.symbol === symbol);
      if (existing) {
        return acc;
      }
      const prior = previousTickers.find((ticker) => ticker.symbol === symbol);
      acc.push(
        prior || {
          symbol,
          price: null,
          change: null
        }
      );
      return acc;
    }, []);
};

export const normalizeRuntimeWatchlistSymbols = (runtimeConfig, fallbackTickers = []) => {
  const runtimeSymbols = Array.isArray(runtimeConfig?.tickers)
    ? runtimeConfig.tickers.map(normalizeSymbol).filter(Boolean)
    : [];

  if (runtimeSymbols.length > 0) {
    return runtimeSymbols;
  }

  return fallbackTickers
    .map((ticker) => normalizeSymbol(ticker?.symbol))
    .filter(Boolean);
};

export const parseWatchlistInput = (value) => {
  if (typeof value !== "string") {
    return [];
  }

  return Array.from(
    new Set(
      value
        .split(/[\s,]+/)
        .map(normalizeSymbol)
        .filter(Boolean)
    )
  );
};

export const buildRuntimeSummaryLabel = (runtimeConfig) => {
  if (!runtimeConfig) {
    return null;
  }

  const scheduleMode = String(runtimeConfig.schedule_mode || "daily");
  const intervalMinutes = Number(runtimeConfig.interval_minutes || 60);
  const triggerTime = String(runtimeConfig.trigger_time || "now");
  const maxCommCycles = Number(runtimeConfig.max_comm_cycles || 2);

  if (scheduleMode === "intraday") {
    return `调度 intraday / ${intervalMinutes}m / 讨论 ${maxCommCycles} 轮`;
  }

  if (triggerTime.toLowerCase() === "now") {
    return `调度 daily / 立即执行 / 讨论 ${maxCommCycles} 轮`;
  }

  return `调度 daily / ${triggerTime} ET / 讨论 ${maxCommCycles} 轮`;
};