import type { FixStatus, LeaveType, ReqStatus, TxnKind } from "@/types";

export function classNames(...xs: (string | false | null | undefined)[]) {
  return xs.filter(Boolean).join(" ");
}

export function formatDate(value?: string | null): string {
  if (!value) return "—";
  const d = new Date(value);
  if (Number.isNaN(d.getTime())) return value;
  const y = d.getFullYear();
  const m = String(d.getMonth() + 1).padStart(2, "0");
  const day = String(d.getDate()).padStart(2, "0");
  return `${y}.${m}.${day}`;
}

export function formatDateTime(value?: string | null): string {
  if (!value) return "—";
  const d = new Date(value);
  if (Number.isNaN(d.getTime())) return value;
  return `${formatDate(value)} ${String(d.getHours()).padStart(2, "0")}:${String(
    d.getMinutes()
  ).padStart(2, "0")}`;
}

export function formatTime(value?: string | null): string {
  if (!value) return "—";
  const d = new Date(value);
  if (Number.isNaN(d.getTime())) return "—";
  return `${String(d.getHours()).padStart(2, "0")}:${String(d.getMinutes()).padStart(2, "0")}`;
}

// Korean-style money: 1,2300,0000 → "1억 2,300만". Compact for dashboards.
export function formatKRW(n?: number): string {
  if (n == null) return "—";
  const neg = n < 0;
  let v = Math.abs(Math.round(n));
  if (v === 0) return "₩0";
  const eok = Math.floor(v / 100_000_000);
  v = v % 100_000_000;
  const man = Math.floor(v / 10_000);
  const rest = v % 10_000;
  const parts: string[] = [];
  if (eok) parts.push(`${eok}억`);
  if (man) parts.push(`${man.toLocaleString()}만`);
  if (rest && !eok) parts.push(`${rest.toLocaleString()}`);
  const s = parts.join(" ") || "0";
  return `${neg ? "-" : ""}₩${s}`;
}

// Full numeric KRW with grouping (for ledgers / inputs).
export function formatWon(n?: number): string {
  if (n == null) return "—";
  return `₩${Math.round(n).toLocaleString()}`;
}

export function formatPoints(n?: number): string {
  if (n == null) return "—";
  return `${(Math.round(n * 10) / 10).toLocaleString()}P`;
}

export function minutesToHM(min?: number): string {
  if (!min || min <= 0) return "0시간";
  const h = Math.floor(min / 60);
  const m = min % 60;
  return m ? `${h}시간 ${m}분` : `${h}시간`;
}

export function formatSize(bytes?: number): string {
  if (!bytes || bytes <= 0) return "—";
  const units = ["B", "KB", "MB", "GB"];
  let n = bytes;
  let i = 0;
  while (n >= 1024 && i < units.length - 1) {
    n /= 1024;
    i++;
  }
  return `${n.toFixed(n < 10 && i > 0 ? 1 : 0)} ${units[i]}`;
}

/* ---- status metadata ---- */
export const REQ_STATUS_META: Record<ReqStatus, { label: string; fg: string; bg: string }> = {
  pending: { label: "대기", fg: "#B54708", bg: "#FEF0C7" },
  approved: { label: "승인", fg: "#067647", bg: "#DCFAE6" },
  rejected: { label: "반려", fg: "#B42318", bg: "#FEE4E2" },
  canceled: { label: "취소", fg: "#475467", bg: "#F2F4F7" },
};

export const FIX_STATUS_META: Record<FixStatus, { label: string; fg: string; bg: string }> = {
  planned: { label: "예정", fg: "#475467", bg: "#F2F4F7" },
  applying: { label: "반영중", fg: "#175CD3", bg: "#D1E9FF" },
  applied: { label: "반영완료", fg: "#5925DC", bg: "#EBE9FE" },
  paid: { label: "지급완료", fg: "#067647", bg: "#DCFAE6" },
};

export const FIX_ORDER: FixStatus[] = ["planned", "applying", "applied", "paid"];

export const LEAVE_LABELS: Record<LeaveType, string> = {
  annual: "연차",
  half_am: "오전 반차",
  half_pm: "오후 반차",
  public: "공가",
  sick: "병가",
  family: "경조사",
  unpaid: "무급",
};

export const TXN_LABELS: Record<TxnKind, string> = {
  income: "수입",
  expense: "비용",
  tax: "세금",
  payroll: "급여",
  incentive: "인센티브",
};

export const STAGE_KIND_LABELS: Record<string, string> = {
  deposit: "계약금",
  middle: "중도금",
  final: "잔금",
};

// 인센티브 BE/non-BE 라벨 (프로젝트 계약범위와 무관 — 그쪽은 자유 텍스트)
export const SCOPE_LABELS: Record<string, string> = {
  be: "BE",
  non_be: "non-BE",
};

export const PROJECT_STATUS_META: Record<string, { label: string; fg: string; bg: string }> = {
  planned: { label: "예정", fg: "#475467", bg: "#F2F4F7" },
  active: { label: "진행중", fg: "#175CD3", bg: "#D1E9FF" },
  hold: { label: "보류", fg: "#B54708", bg: "#FEF0C7" },
  done: { label: "완료", fg: "#067647", bg: "#DCFAE6" },
  dropped: { label: "중단", fg: "#B42318", bg: "#FEE4E2" },
};

export const LANE_LABELS: Record<string, string> = {
  todo: "할 일",
  doing: "진행중",
  review: "검토",
  done: "완료",
};