// financialService 类型声明

export interface RequestOptions {
  signal?: AbortSignal;
}

export interface ApiResponse<T> {
  success: boolean;
  data: T;
  message?: string;
}

export interface FinancialService {
  getStockInfo(seccode: string, options?: RequestOptions): Promise<ApiResponse<any>>;
  getBalanceSheet(seccode: string, limit?: number, options?: RequestOptions): Promise<ApiResponse<any[]>>;
  getIncomeStatement(seccode: string, limit?: number, options?: RequestOptions): Promise<ApiResponse<any[]>>;
  getCashflow(seccode: string, limit?: number, options?: RequestOptions): Promise<ApiResponse<any[]>>;
  getFinancialMetrics(seccode: string, limit?: number, options?: RequestOptions): Promise<ApiResponse<any[]>>;
  getMainBusiness(seccode: string, periods?: number, options?: RequestOptions): Promise<ApiResponse<any>>;
  getForecast(seccode: string, options?: RequestOptions): Promise<ApiResponse<any>>;
  getIndustryRank(seccode: string, limit?: number, options?: RequestOptions): Promise<ApiResponse<any[]>>;
  getPeriodComparison(seccode: string, periods?: number, options?: RequestOptions): Promise<ApiResponse<any[]>>;
}

export const financialService: FinancialService;

export interface FormatUtils {
  formatLargeNumber(num: number, decimal?: number): string;
  formatPercent(num: number, decimal?: number): string;
  formatDate(dateStr: string): string;
  getReportType(dateStr: string): string;
  getGrowthColor(value: number): string;
  getTrendIcon(current: number, previous: number): 'up' | 'down' | 'stable';
  calculateYoY(current: number, yearAgo: number): number | null;
  calculateQoQ(current: number, previous: number): number | null;
  getFinancialHealthScore(metrics: any): { score: number; level: string; color: string } | null;
  getTableColumns(type: string): any[];
}

export const formatUtils: FormatUtils;

export interface ChartUtils {
  prepareTrendData(data: any[], metrics: any[]): any[];
  preparePieData(data: any[], valueKey: string, nameKey: string): any[];
  prepareComparisonData(data: any[], periods: any[], metrics: any[]): any[];
  getChartColors(theme?: string): string[];
}

export const chartUtils: ChartUtils;