import { normalizeStartCandleType } from './strategyStartNodes';
import { resolveVirtualTargetNames } from './virtualTargetNames';
import { getUiPreferences, patchUiPreferences } from './uiPreferencesDb';

/** 가상투자 대상 종목·세션 설정 (DB ui_preferences + per-market live settings) */

export interface VirtualTargetItem {
  market: string;
  strategyId: number | null;
  /** 종목별 전략 평가 분봉 (gc_live_strategy_settings.candle_type) */
  candleType?: string;
  koreanName?: string;
  englishName?: string;
  /** 투자대상 고정 — ON 이면 목록·추세검색에서 삭제 불가 (gc_live_strategy_settings.is_pinned) */
  pinned?: boolean;
}

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;
}

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

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

function normalizeTargets(items: VirtualTargetItem[]): VirtualTargetItem[] {
  return items.map(t => {
    const { koreanName, englishName } = resolveVirtualTargetNames(
      t.market,
      t.koreanName,
      t.englishName,
    );
    return { ...t, koreanName, englishName };
  });
}

export function loadVirtualTargets(): VirtualTargetItem[] {
  const raw = getUiPreferences().virtual?.targets;
  if (!raw?.length) return [];
  return normalizeTargets(raw);
}

export function saveVirtualTargets(items: VirtualTargetItem[]): void {
  patchUiPreferences({ virtual: { targets: items } });
  notifyVirtualSessionChanged();
}

export function loadVirtualSession(): VirtualSessionConfig {
  const parsed = getUiPreferences().virtual?.session;
  if (!parsed) return defaultSession();
  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,
  };
}

export function saveVirtualSession(cfg: VirtualSessionConfig): void {
  patchUiPreferences({ virtual: { session: cfg } });
  notifyVirtualSessionChanged();
}

export const VIRTUAL_SESSION_CHANGED_EVENT = 'gc_virtual_session_changed';

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

export function loadVirtualCardViewMode(): VirtualCardViewMode {
  const mode = getUiPreferences().virtual?.cardViewMode;
  return mode === 'detail' ? 'detail' : 'summary';
}

export function saveVirtualCardViewMode(mode: VirtualCardViewMode): void {
  patchUiPreferences({ virtual: { cardViewMode: mode } });
}

/** 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';
}