/** 金额与日期格式化 */

export function formatUSD(amount: number): string {
  return new Intl.NumberFormat("en-US", {
    style: "currency",
    currency: "USD",
    minimumFractionDigits: 2,
    maximumFractionDigits: 2,
  }).format(amount);
}

export function formatPercent(value: number): string {
  return `${value.toFixed(1)}%`;
}

export function formatDateTime(iso: string): string {
  return new Intl.DateTimeFormat("zh-CN", {
    year: "numeric",
    month: "2-digit",
    day: "2-digit",
    hour: "2-digit",
    minute: "2-digit",
    second: "2-digit",
    hour12: false,
  }).format(new Date(iso));
}

export function uuidV4(): string {
  if (typeof crypto !== "undefined" && crypto.randomUUID) {
    return crypto.randomUUID();
  }
  return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) => {
    const r = (Math.random() * 16) | 0;
    const v = c === "x" ? r : (r & 0x3) | 0x8;
    return v.toString(16);
  });
}