import { resolveVirtualTargetNames } from './virtualTargetNames';
import { getUiPreferences, patchUiPreferences } from './uiPreferencesDb';
import {
  DEFAULT_TRADE_NOTIFICATION_GRID_PRESET,
  normalizeTradeNotificationGridPreset,
  type TradeNotificationGridPresetId,
} from './tradeNotificationGridPresets';

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

export interface VirtualTargetItem {
  market: string;
  strategyId: number | null;
  koreanName?: string;
  englishName?: string;
  /** 투자대상 고정 — 추세검색 자동삭제 등에서 보호 (수동 삭제는 가능, 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,
  };
}

/** 레거시 ui_preferences.virtual.targets.candleType 제거 */
function normalizeTargets(items: VirtualTargetItem[]): VirtualTargetItem[] {
  return items.map(t => {
    const { koreanName, englishName } = resolveVirtualTargetNames(
      t.market,
      t.koreanName,
      t.englishName,
    );
    return {
      market: t.market,
      strategyId: t.strategyId ?? null,
      koreanName,
      englishName,
      pinned: t.pinned,
    };
  });
}

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: normalizeTargets(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 } });
}

export function loadVirtualGridPreset(): TradeNotificationGridPresetId {
  return normalizeTradeNotificationGridPreset(
    getUiPreferences().virtual?.gridPreset ?? DEFAULT_TRADE_NOTIFICATION_GRID_PRESET,
  );
}

export function saveVirtualGridPreset(preset: TradeNotificationGridPresetId): void {
  patchUiPreferences({ virtual: { gridPreset: preset } });
}