import { generateNodeId } from './strategyTypes';

export const START_NODE_ID = '__strategy_start__';
export const DEFAULT_START_CANDLE = '1m';

export const STRATEGY_CANDLE_TYPES = [
  '1m', '3m', '5m', '10m', '15m', '30m', '1h', '4h', '1w', '1d',
] as const;

/** 그래프 START 노드 — 시간봉 체크박스 2행 배치 */
export const START_TIMEFRAME_GRAPH_ROWS: readonly (readonly StrategyCandleType[])[] = [
  ['1m', '3m', '5m', '10m', '15m'],
  ['30m', '1h', '4h', '1w', '1d'],
] as const;

export type StrategyCandleType = (typeof STRATEGY_CANDLE_TYPES)[number];

export type StartNodeMeta = {
  /** @deprecated 단일 분봉 — candleTypes 우선 */
  candleType?: string;
  /** 선택된 평가 시간봉 (마감봉마다 독립 체크) */
  candleTypes?: string[];
};

/** START가 2개 이상일 때 분기 간 결합 연산 */
export type StartCombineOp = 'AND' | 'OR';

export const DEFAULT_START_COMBINE_OP: StartCombineOp = 'AND';

export function isStartNodeId(id: string): boolean {
  return id === START_NODE_ID || id.startsWith('__strategy_start_');
}

export function createStartNodeId(): string {
  return `__strategy_start_${generateNodeId()}__`;
}

export function defaultStartMeta(): Record<string, StartNodeMeta> {
  return { [START_NODE_ID]: { candleTypes: [DEFAULT_START_CANDLE], candleType: DEFAULT_START_CANDLE } };
}

/** START 메타에서 정렬된 평가 분봉 목록 (최소 1개) */
export function getStartCandleTypes(meta?: StartNodeMeta | null): string[] {
  const raw = meta?.candleTypes?.length
    ? meta.candleTypes
    : meta?.candleType
      ? [meta.candleType]
      : [DEFAULT_START_CANDLE];
  const seen = new Set<string>();
  const out: string[] = [];
  for (const ct of STRATEGY_CANDLE_TYPES) {
    if (raw.some(r => normalizeStartCandleType(r) === ct) && !seen.has(ct)) {
      seen.add(ct);
      out.push(ct);
    }
  }
  for (const r of raw) {
    const n = normalizeStartCandleType(r);
    if (!seen.has(n)) {
      seen.add(n);
      out.push(n);
    }
  }
  return out.length > 0 ? out : [DEFAULT_START_CANDLE];
}

export function formatStartCandleTypesLabel(types: string[]): string {
  const list = getStartCandleTypes({ candleTypes: types });
  return list.map(formatStrategyCandleLabel).join(' · ');
}

export function normalizeStartCandleType(value: string | undefined | null): string {
  const raw = (value ?? DEFAULT_START_CANDLE).trim().toLowerCase();
  if (raw === '1d' || raw === '1w') return raw;
  return (STRATEGY_CANDLE_TYPES as readonly string[]).includes(raw) ? raw : DEFAULT_START_CANDLE;
}

export function formatStartCandleLabel(candleType: string): string {
  return normalizeStartCandleType(candleType);
}

const CANDLE_TYPE_LABELS: Record<string, string> = {
  '1m': '1분봉',
  '3m': '3분봉',
  '5m': '5분봉',
  '10m': '10분봉',
  '15m': '15분봉',
  '30m': '30분봉',
  '1h': '1시간봉',
  '4h': '4시간봉',
  '1w': '주간봉',
  '1d': '일봉',
};

export function formatStrategyCandleLabel(candleType: string): string {
  const ct = normalizeStartCandleType(candleType);
  return CANDLE_TYPE_LABELS[ct] ?? ct;
}

export const STRATEGY_CANDLE_TYPE_OPTIONS = STRATEGY_CANDLE_TYPES.map(ct => ({
  value: ct,
  label: CANDLE_TYPE_LABELS[ct] ?? ct,
}));