import { DriverInfo, DriverManagementConfig } from "../types";

/**
 * 운행 상태별 색상 반환
 */
export function getStatusColor(status: DriverInfo["status"]) {
  switch (status) {
    case "driving":
      return {
        bg: "bg-green-100",
        text: "text-green-800",
        border: "border-green-300",
        badge: "bg-green-500",
      };
    case "standby":
      return {
        bg: "bg-gray-100",
        text: "text-gray-800",
        border: "border-gray-300",
        badge: "bg-gray-500",
      };
    case "resting":
      return {
        bg: "bg-orange-100",
        text: "text-orange-800",
        border: "border-orange-300",
        badge: "bg-orange-500",
      };
    case "maintenance":
      return {
        bg: "bg-red-100",
        text: "text-red-800",
        border: "border-red-300",
        badge: "bg-red-500",
      };
    default:
      return {
        bg: "bg-gray-100",
        text: "text-gray-800",
        border: "border-gray-300",
        badge: "bg-gray-500",
      };
  }
}

/**
 * 운행 상태 한글 변환
 */
export function getStatusLabel(status: DriverInfo["status"]) {
  switch (status) {
    case "driving":
      return "운행중";
    case "standby":
      return "대기중";
    case "resting":
      return "휴식중";
    case "maintenance":
      return "점검중";
    default:
      return "알 수 없음";
  }
}

/**
 * 시간 포맷팅 (HH:MM)
 */
export function formatTime(dateString?: string): string {
  if (!dateString) return "-";
  const date = new Date(dateString);
  return date.toLocaleTimeString("ko-KR", {
    hour: "2-digit",
    minute: "2-digit",
    hour12: false,
  });
}

/**
 * 날짜 시간 포맷팅 (MM/DD HH:MM)
 */
export function formatDateTime(dateString?: string): string {
  if (!dateString) return "-";
  const date = new Date(dateString);
  return date.toLocaleString("ko-KR", {
    month: "2-digit",
    day: "2-digit",
    hour: "2-digit",
    minute: "2-digit",
    hour12: false,
  });
}

/**
 * 운행 진행률 계산 (실제로는 GPS 데이터 기반)
 */
export function calculateProgress(driver: DriverInfo): number {
  if (!driver.departureTime || !driver.estimatedArrival) return 0;

  const now = new Date();
  const departure = new Date(driver.departureTime);
  const arrival = new Date(driver.estimatedArrival);

  const totalTime = arrival.getTime() - departure.getTime();
  const elapsedTime = now.getTime() - departure.getTime();

  const progress = Math.min(100, Math.max(0, (elapsedTime / totalTime) * 100));
  return Math.round(progress);
}

/**
 * 기사 필터링
 */
export function filterDrivers(
  drivers: DriverInfo[],
  statusFilter: DriverManagementConfig["statusFilter"],
  searchTerm: string,
): DriverInfo[] {
  let filtered = drivers;

  // 상태 필터
  if (statusFilter !== "all") {
    filtered = filtered.filter((driver) => driver.status === statusFilter);
  }

  // 검색어 필터
  if (searchTerm.trim()) {
    const term = searchTerm.toLowerCase();
    filtered = filtered.filter(
      (driver) =>
        driver.name.toLowerCase().includes(term) ||
        driver.vehicleNumber.toLowerCase().includes(term) ||
        driver.phone.includes(term),
    );
  }

  return filtered;
}

/**
 * 기사 정렬
 */
export function sortDrivers(
  drivers: DriverInfo[],
  sortBy: DriverManagementConfig["sortBy"],
  sortOrder: DriverManagementConfig["sortOrder"],
): DriverInfo[] {
  const sorted = [...drivers];

  sorted.sort((a, b) => {
    let compareResult = 0;

    switch (sortBy) {
      case "name":
        compareResult = a.name.localeCompare(b.name, "ko-KR");
        break;
      case "vehicleNumber":
        compareResult = a.vehicleNumber.localeCompare(b.vehicleNumber);
        break;
      case "status":
        const statusOrder = { driving: 0, resting: 1, standby: 2, maintenance: 3 };
        compareResult = statusOrder[a.status] - statusOrder[b.status];
        break;
      case "departureTime":
        const timeA = a.departureTime ? new Date(a.departureTime).getTime() : 0;
        const timeB = b.departureTime ? new Date(b.departureTime).getTime() : 0;
        compareResult = timeA - timeB;
        break;
    }

    return sortOrder === "asc" ? compareResult : -compareResult;
  });

  return sorted;
}

/**
 * 테마별 색상 반환
 */
export function getThemeColors(theme: string, customColor?: string) {
  if (theme === "custom" && customColor) {
    const lighterColor = adjustColor(customColor, 40);
    const darkerColor = adjustColor(customColor, -40);

    return {
      background: lighterColor,
      text: darkerColor,
      border: customColor,
      hover: customColor,
    };
  }

  if (theme === "dark") {
    return {
      background: "#1f2937",
      text: "#f3f4f6",
      border: "#374151",
      hover: "#374151",
    };
  }

  // light theme (default)
  return {
    background: "#ffffff",
    text: "#1f2937",
    border: "#e5e7eb",
    hover: "#f3f4f6",
  };
}

/**
 * 색상 밝기 조정
 */
function adjustColor(color: string, amount: number): string {
  const clamp = (num: number) => Math.min(255, Math.max(0, num));

  const hex = color.replace("#", "");
  const r = parseInt(hex.substring(0, 2), 16);
  const g = parseInt(hex.substring(2, 4), 16);
  const b = parseInt(hex.substring(4, 6), 16);

  const newR = clamp(r + amount);
  const newG = clamp(g + amount);
  const newB = clamp(b + amount);

  return `#${newR.toString(16).padStart(2, "0")}${newG.toString(16).padStart(2, "0")}${newB.toString(16).padStart(2, "0")}`;
}

/**
 * 기본 표시 컬럼 목록
 */
export const DEFAULT_VISIBLE_COLUMNS = [
  "status",
  "name",
  "vehicleNumber",
  "vehicleType",
  "departure",
  "destination",
  "departureTime",
  "estimatedArrival",
  "phone",
];

/**
 * 컬럼 라벨 매핑
 */
export const COLUMN_LABELS: Record<string, string> = {
  status: "상태",
  name: "기사명",
  vehicleNumber: "차량번호",
  vehicleType: "차량유형",
  departure: "출발지",
  destination: "목적지",
  departureTime: "출발시간",
  estimatedArrival: "도착예정",
  phone: "연락처",
  progress: "진행률",
};