import { useEffect } from "react";
import Portal from "@/components/Portal";

const EventDetailModal = ({ isOpen, event, onClose }) => {
  // ESC键关闭模态框
  useEffect(() => {
    const handleEscKey = (e) => {
      if (e.key === "Escape" && isOpen) {
        onClose();
      }
    };

    if (isOpen) {
      document.addEventListener("keydown", handleEscKey);
    }

    return () => {
      document.removeEventListener("keydown", handleEscKey);
    };
  }, [isOpen, onClose]);

  // 如果未打开或无事件数据，不渲染
  if (!isOpen || !event) {
    return null;
  }

  // 事件类型映射
  const eventTypeNames = {
    class: "课程",
    meeting: "会议",
    lab: "实验",
    exam: "考试",
  };

  // 处理遮罩层点击
  const handleOverlayClick = (e) => {
    if (e.target === e.currentTarget) {
      onClose();
    }
  };

  // 处理关闭按钮点击
  const handleCloseClick = () => {
    onClose();
  };

  // 格式化时间显示
  const formatTimeRange = (startTime, endTime) => {
    const startDate = new Date(startTime.replace(" ", "T"));
    const endDate = new Date(endTime.replace(" ", "T"));

    const formatTime = (date) => {
      return date.toLocaleTimeString("zh-CN", {
        hour: "2-digit",
        minute: "2-digit",
        hour12: false,
      });
    };

    const formatDate = (date) => {
      return date.toLocaleDateString("zh-CN", {
        year: "numeric",
        month: "long",
        day: "numeric",
        weekday: "long",
      });
    };

    return {
      date: formatDate(startDate),
      timeRange: `${formatTime(startDate)} - ${formatTime(endDate)}`,
    };
  };

  const { date, timeRange } = formatTimeRange(event.startTime, event.endTime);

  return (
    <Portal className="event-detail-portal">
      <div className="event-detail-overlay" onClick={handleOverlayClick}>
        <div className="event-detail-modal">
          {/* 模态框头部 */}
          <div className="event-detail-header">
            <h3 className="event-detail-title">事件详情</h3>
            <button
              className="event-detail-close"
              onClick={handleCloseClick}
              type="button"
            >
              ×
            </button>
          </div>

          {/* 模态框内容 */}
          <div className="event-detail-content">
            {/* 事件标题 */}
            <div className="event-detail-field">
              <div className="event-detail-label">事件标题</div>
              <div className="event-detail-value">{event.title}</div>
            </div>

            {/* 事件类型 */}
            <div className="event-detail-field">
              <div className="event-detail-label">事件类型</div>
              <div className="event-detail-value">
                <span className={`event-type-badge event-type-${event.type}`}>
                  {eventTypeNames[event.type] || event.type}
                </span>
              </div>
            </div>

            {/* 日期 */}
            <div className="event-detail-field">
              <div className="event-detail-label">日期</div>
              <div className="event-detail-value">{date}</div>
            </div>

            {/* 时间 */}
            <div className="event-detail-field">
              <div className="event-detail-label">时间</div>
              <div className="event-detail-value">
                <div className="event-time-range">{timeRange}</div>
              </div>
            </div>

            {/* 详细描述 */}
            {event.description && (
              <div className="event-detail-field">
                <div className="event-detail-label">详细描述</div>
                <div className="event-detail-value">{event.description}</div>
              </div>
            )}
          </div>
        </div>
      </div>
    </Portal>
  );
};

export default EventDetailModal;