import { Asset } from './Asset.js';

interface EtfData {
  ticker?: string;
  currentPrice?: number;
  expenseRatio?: string | number;
  totalAssets?: string | number;
  yield?: string | number;
  volume?: string | number;
  fiveYearReturn?: string | number;
  [key: string]: unknown;
}

export interface EtfMetrics {
  expenseRatio: number;
  totalAssets: number;
  yield: number;
  volume: number;
  fiveYearReturn: number;
}

export class Etf extends Asset {
  metrics: EtfMetrics;

  constructor(data: EtfData) {
    super(data);
    this.metrics = {
      expenseRatio: parseFloat(String(data.expenseRatio)) || 0,
      totalAssets: parseFloat(String(data.totalAssets)) || 0,
      yield: parseFloat(String(data.yield)) || 0,
      volume: parseFloat(String(data.volume)) || 0,
      fiveYearReturn: parseFloat(String(data.fiveYearReturn)) || 0,
    };
  }

  getDisplayMetrics(): Record<string, string> {
    return {
      Ticker: this.ticker,
      Type: 'ETF',
      Price: this.formatCurrency(this.currentPrice),
      'Exp Ratio%': `${this.metrics.expenseRatio.toFixed(2)}%`,
      'Yield%': `${this.metrics.yield.toFixed(2)}%`,
      AUM: this.formatLargeNumber(this.metrics.totalAssets),
      '5Y Return%': `${this.metrics.fiveYearReturn.toFixed(1)}%`,
    };
  }
}