export const getMedalList = async () => {
  return [
    {
      id: 1,
      activaFlag: "Y",
      confeMode: "4",
      confeSubKno: "SORG",
      medalObjName: "授予分行机构",
      createTm: "2025-11-26T11:17:09.000Z",
      creatorNo: "046083",
      filePicUrl: "/getUrl?fileId=3d6457ca-3d05-463f-8acd-d5a56d773c40",
      limitQtyFlag: "Y",
      limitTmFlag: "Y",
      medalDesc: "",
      medalName: "阿萨德",
      medalNo: "SORG419ABFE1ADE9",
      medalQty: 13,
      issuedQty: 2,
      tmUnitType: "D",
      updateStaffNo: "046083",
      updateTm: "2025-12-30T13:10:44.000Z",
      wearDurat: 12
    },
    {
      id: 2,
      activaFlag: "Y",
      confeMode: "4",
      confeSubKno: "CU",
      medalObjName: "授予客户经理",
      createTm: "2025-11-26T11:17:09.000Z",
      creatorNo: "046083",
      filePicUrl: "/getUrl?fileId=7661069b-aeb9-450b-aa78-3192d53e4e10",
      limitQtyFlag: "N",
      limitTmFlag: "N",
      medalDesc: "",
      medalName: "1111",
      medalNo: "CU41990D4501B5",
      medalQty: 0,
      issuedQty: 0,
      tmUnitType: "",
      updateStaffNo: "046083",
      updateTm: "2025-12-30T13:10:44.000Z",
      wearDurat: 0
    },
    {
      id: 3,
      activaFlag: "N",
      confeMode: "4",
      confeSubKno: "CU",
      medalObjName: "授予客户经理",
      createTm: "2025-11-26T11:17:09.000Z",
      creatorNo: "046083",
      filePicUrl: "/getUrl?fileId=3d6457ca-3d05-463f-8acd-d5a56d773c40",
      limitQtyFlag: "Y",
      limitTmFlag: "Y",
      medalDesc: "",
      medalName: "测试勋章",
      medalNo: "CU419917C23D9C",
      medalQty: 999,
      issuedQty: 0,
      tmUnitType: "D",
      updateStaffNo: "046083",
      updateTm: "2025-11-26T11:10:44.000Z",
      wearDurat: 12
    }
  ];
};

type MedalUser = {
  id: string;
  displayName: string;
  userNo: string;
};

let cachedUserPool: MedalUser[] | null = null;

function getUserPool(): MedalUser[] {
  if (cachedUserPool) return cachedUserPool;

  const surnames = ["赵", "钱", "孙", "李", "周", "吴", "郑", "王", "冯", "陈", "褚", "卫", "蒋", "沈", "韩", "杨", "朱", "秦", "尤", "许", "何", "吕", "施", "张", "孔", "曹", "严", "华", "金", "魏", "陶", "姜"];
  const givenNames = ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "子", "文", "宇", "浩", "欣", "婷", "磊", "楠", "敏", "静", "伟", "强", "明", "杰", "晨", "洋", "雪", "雨", "峰", "超"];
  const list: MedalUser[] = [];
  const count = 200;
  for (let i = 0; i < count; i += 1) {
    const displayName = `${surnames[i % surnames.length]}${givenNames[i % givenNames.length]}${givenNames[(i + 7) % givenNames.length]}`;
    const userNo = String(200000 + i).padStart(6, "0");
    list.push({
      id: userNo,
      displayName,
      userNo
    });
  }

  cachedUserPool = list;
  return list;
}

export const getMedalUserList = async (medalNo?: string) => {
  // 这里可以根据 medalNo 过滤或获取特定数据，目前仅作为示例接收参数
  // console.log("Fetching users for medal:", medalNo);
  const list = getUserPool();
  
  // 模拟已发放用户（取前10个）
  const issuedUsers = list.slice(0, 10);
  
  return {
    allUsers: list,
    issuedUsers
  };
};

function toInt(value: unknown, fallback: number): number {
  if (typeof value === "number" && Number.isFinite(value)) return Math.floor(value);
  if (typeof value === "string" && value.trim() !== "") {
    const parsed = Number.parseInt(value, 10);
    if (Number.isFinite(parsed)) return parsed;
  }
  return fallback;
}

function toStringArray(value: unknown): string[] {
  if (Array.isArray(value)) return value.map(String).map((s) => s.trim()).filter(Boolean);
  if (typeof value === "string") {
    const trimmed = value.trim();
    if (!trimmed) return [];
    return trimmed.split(",").map((s) => s.trim()).filter(Boolean);
  }
  return [];
}

export const getCandidateUserPage = async (input: {
  page?: unknown;
  pageSize?: unknown;
  keyword?: unknown;
  excludeUserNos?: unknown;
}) => {
  const pageSize = Math.max(1, Math.min(200, toInt(input.pageSize, 10)));
  const page = Math.max(1, toInt(input.page, 1));
  const keyword = typeof input.keyword === "string" ? input.keyword.trim() : "";
  const excludeUserNos = new Set(toStringArray(input.excludeUserNos));

  const pool = getUserPool();
  const filtered = pool.filter((u) => {
    if (excludeUserNos.has(u.userNo)) return false;
    if (!keyword) return true;
    return u.displayName.includes(keyword) || u.userNo.includes(keyword);
  });

  const total = filtered.length;
  const start = (page - 1) * pageSize;
  const list = filtered.slice(start, start + pageSize);

  return {
    list,
    total,
    page,
    pageSize
  };
};