import { normalizeStartCandleType } from './strategyStartNodes';

/** 가상투자 대상 종목·세션 설정 localStorage */

export interface VirtualTargetItem {
  market: string;
  strategyId: number | null;
  /** 종목별 전략 평가 분봉 (gc_live_strategy_settings.candle_type) */
  candleType?: string;
  koreanName?: string;
  englishName?: string;
}

export interface VirtualSessionConfig {
  globalStrategyId: number | null;
  executionType: 'CANDLE_CLOSE' | 'REALTIME_TICK';
  /** LONG_ONLY = 보유 자산 기준, SIGNAL_ONLY = 순수 지표 기준 */
  positionMode: 'LONG_ONLY' | 'SIGNAL_ONLY';
  running: boolean;
}

const TARGETS_KEY = 'gc_virtual_targets_v1';
const SESSION_KEY = 'gc_virtual_session_v1';
const CARD_VIEW_KEY = 'gc_virtual_card_view_v1';

/** 카드 표시: summary=이퀄라이저·신호등·푸터만, detail=지표 테이블 포함 전체 */
export type VirtualCardViewMode = 'summary' | 'detail';

export function loadVirtualTargets(): VirtualTargetItem[] {
  try {
    const raw = localStorage.getItem(TARGETS_KEY);
    if (!raw) return [];
    const parsed = JSON.parse(raw) as VirtualTargetItem[];
    return Array.isArray(parsed) ? parsed : [];
  } catch {
    return [];
  }
}

export function saveVirtualTargets(items: VirtualTargetItem[]): void {
  try {
    localStorage.setItem(TARGETS_KEY, JSON.stringify(items));
    notifyVirtualSessionChanged();
  } catch { /* ignore */ }
}

export function loadVirtualSession(): VirtualSessionConfig {
  try {
    const raw = localStorage.getItem(SESSION_KEY);
    if (!raw) return defaultSession();
    const parsed = JSON.parse(raw) as Partial<VirtualSessionConfig>;
    return {
      globalStrategyId: parsed.globalStrategyId ?? null,
      executionType: parsed.executionType === 'REALTIME_TICK' ? 'REALTIME_TICK' : 'CANDLE_CLOSE',
      positionMode: parsed.positionMode === 'SIGNAL_ONLY' ? 'SIGNAL_ONLY' : 'LONG_ONLY',
      running: parsed.running === true,
    };
  } catch {
    return defaultSession();
  }
}

export function saveVirtualSession(cfg: VirtualSessionConfig): void {
  try {
    localStorage.setItem(SESSION_KEY, JSON.stringify(cfg));
    notifyVirtualSessionChanged();
  } catch { /* ignore */ }
}

export const VIRTUAL_SESSION_CHANGED_EVENT = 'gc_virtual_session_changed';

export function notifyVirtualSessionChanged(): void {
  window.dispatchEvent(new CustomEvent(VIRTUAL_SESSION_CHANGED_EVENT));
}

function defaultSession(): VirtualSessionConfig {
  return {
    globalStrategyId: null,
    executionType: 'CANDLE_CLOSE',
    positionMode: 'LONG_ONLY',
    running: false,
  };
}

export function loadVirtualCardViewMode(): VirtualCardViewMode {
  try {
    const raw = localStorage.getItem(CARD_VIEW_KEY);
    return raw === 'detail' ? 'detail' : 'summary';
  } catch {
    return 'summary';
  }
}

export function saveVirtualCardViewMode(mode: VirtualCardViewMode): void {
  try {
    localStorage.setItem(CARD_VIEW_KEY, mode);
  } catch { /* ignore */ }
}

/** 카드 시간봉 드롭다운 기본값 — 저장값 → 스냅샷 → 1m */
export function resolveTargetCandleType(
  item: Pick<VirtualTargetItem, 'candleType'>,
  snapshotTimeframe?: string | null,
): string {
  if (item.candleType) return normalizeStartCandleType(item.candleType);
  const raw = snapshotTimeframe?.split(',')[0]?.trim();
  if (raw) return normalizeStartCandleType(raw);
  return '1m';
}