type CurrentEnv =
  | "localhost"
  | "test"
  | "test1"
  | "test2"
  | "test3"
  | "test4"
  | "test5"
  | "gray"
  | "online";

  type CurrentEnvBig = 'localhost' | 'test' | 'gray' | 'online'

/** 判断当前test环境，包括test、test1-10 */
export const TEST_REG = /(test(\d+)?)/g;

export function strRandom(n: number): string {
  const chars = [
    "0",
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "a",
    "b",
    "c",
    "d",
    "e",
    "f",
    "g",
    "h",
    "i",
    "j",
    "k",
    "l",
    "m",
    "n",
    "o",
    "p",
    "q",
    "r",
    "s",
    "t",
    "u",
    "v",
    "w",
    "x",
    "y",
    "z",
  ];
  let res = "";
  for (let i = 0; i < n; i++) {
    const id = Math.ceil(Math.random() * 35); // 10+24  因为Math.random()取不到1，所以需要往上+1,也许吧
    res = res + chars[id];
  }
  return res;
}

/**
 * 获取当前环境
 * @returns
 */
export const getCurrentEnv = (): CurrentEnv => {
  const origin = window.location.origin;
  if (origin.includes("localhost") || origin.includes("127.0.0.1")) {
    return "localhost";
  }
  const match = location.origin.match(TEST_REG) ?? [];
  if (match.length === 1) {
    return match[0] as CurrentEnv; // 返回 test、 testN 中一个
  }
  if (location.host.search("gray.") > -1) {
    return "gray";
  }
  return "online";
};

/**
 * 获取当前大环境，test1-n 归为test
 * @returns
 */
export const getCurrentEnvBig = (): CurrentEnvBig => {
  const origin = window.location.origin
  if (origin.includes('localhost') || origin.includes('127.0.0.1') || origin.includes('192.168.')) {
    return 'localhost'
  }
  const match = location.origin.match(TEST_REG) ?? []
  if (match.length === 1) {
    return 'test'
  }
  if (location.host.search('gray.') > -1) {
    return 'gray'
  }
  return 'online'
}

export function getUrlTicket(): string | undefined {
  const r = window.location.search.substring(1).match(/ticket=([^?&#]*)/g);
  if (r !== null && r.length > 0) {
    const ticketStr = r.pop()?.replace("ticket=", "");
    if (ticketStr !== undefined) {
      return decodeURI(ticketStr);
    }
  }
}

// 从sessionStorage获取对象
export function getSessionStorage<T>(name: string): T | null {
  const localStr = sessionStorage.getItem(name);
  if (localStr) {
    try {
      return JSON.parse(localStr) as T;
    } catch {
      return null;
    }
  }
  return null;
}

// 将数据写入sessionStorage
export function setSessionStorage(name: string, data: unknown): void {
  sessionStorage.setItem(name, JSON.stringify(data));
}

export function removeSessionStorage(name: string) {
  sessionStorage.removeItem(name);
}