import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:vbvs_app/common/color/appConstants.dart';
import 'package:vbvs_app/common/util/FitTool.dart';
import 'package:vbvs_app/common/util/MyUtils.dart';
import 'package:vbvs_app/component/tool/ClickableContainer.dart';
import 'package:vbvs_app/controller/date/CalendarController.dart';
import 'SleepdateWidget.dart';

class SleepCalendarWidget extends StatefulWidget {
  final int? timestamp;
  final ValueChanged<DateTime>? onDateSelected;
  final int? type; // 新增参数，默认日历类型为日
  final Color highlightColor; // ✅ 新增

  const SleepCalendarWidget({
    super.key,
    this.timestamp,
    this.onDateSelected,
    this.type = 1,
    this.highlightColor = Colors.black, // ✅ 默认值
  });

  @override
  State<SleepCalendarWidget> createState() => _SleepCalendarWidgetState();
}

class _SleepCalendarWidgetState extends State<SleepCalendarWidget> {
  CalendarController calendarController = Get.find();

  @override
  void initState() {
    super.initState();
    final initialDate = widget.timestamp != null
        ? DateTime.fromMillisecondsSinceEpoch(widget.timestamp!)
        : DateTime.now();
    calendarController.displayedMonth.value = initialDate;
    calendarController.selectedDate.value = initialDate;
  }

  @override
  Widget build(BuildContext context) {
    List<Map<String, dynamic>> showLabel = [
      {"level": 1, "name": "优秀", "color": Color(0xFF4CAF50)},
      {"level": 2, "name": "良好", "color": Color(0xFF8BC34A)},
      {"level": 3, "name": "合格", "color": Color(0xFFFFC107)},
      {"level": 4, "name": "注意", "color": Color(0xFFF44336)},
      {"level": 5, "name": "无报告", "color": Color(0xFF9E9E9E)},
    ];

    return Container(
      width: double.infinity,
      decoration: BoxDecoration(
        borderRadius: BorderRadius.only(
          topLeft: Radius.circular(20.rpx),
          topRight: Radius.circular(20.rpx),
        ),
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          _buildHeader(),
          _buildCalendarBody(showLabel),
        ],
      ),
    );
  }

  Widget _buildHeader() {
    return Container(
      width: double.infinity,
      constraints: BoxConstraints(minHeight: 90.rpx),
      decoration: BoxDecoration(
        color: const Color(0xFF313541),
        borderRadius: BorderRadius.only(
          topLeft: Radius.circular(20.rpx),
          topRight: Radius.circular(20.rpx),
        ),
      ),
      child: Padding(
        padding: EdgeInsets.symmetric(horizontal: 65.rpx),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            ClickableContainer(
              backgroundColor: Colors.transparent,
              highlightColor: Colors.grey,
              padding: EdgeInsets.all(8.rpx),
              onTap: () => calendarController.previousMonth(),
              child: Icon(
                Icons.arrow_back_ios_new,
                color: const Color(0xFF6D6F73),
                size: 24.rpx,
              ),
            ),
            Obx(() => Text(
                  '${calendarController.displayedMonth.value.year}年${calendarController.displayedMonth.value.month}月',
                  style: TextStyle(
                    color: Colors.white,
                    fontSize: 30.rpx,
                  ),
                )),
            ClickableContainer(
              backgroundColor: Colors.transparent,
              highlightColor: Colors.grey,
              padding: EdgeInsets.all(8.rpx),
              onTap: () => calendarController.nextMonth(),
              child: Icon(
                Icons.arrow_forward_ios,
                color: const Color(0xFF6D6F73),
                size: 24.rpx,
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildCalendarBody(List<Map<String, dynamic>> showLabel) {
    return Container(
      width: double.infinity,
      constraints: BoxConstraints(minHeight: 720.rpx),
      decoration: const BoxDecoration(color: Color(0xFF242835)),
      child: Padding(
        // padding: EdgeInsetsDirectional.fromSTEB(65.rpx, 13.rpx, 65.rpx, 38.rpx),
        padding: EdgeInsetsDirectional.fromSTEB(65.rpx, 0.rpx, 65.rpx, 0.rpx),
        child: Obx(() {
          final daysInMonth = calendarController.getDaysInMonth();
          final calendarRows = calendarController.getCalendarRows(daysInMonth);
          final selectedDate = calendarController.selectedDate.value;

          return Column(
            mainAxisSize: MainAxisSize.max,
            children: [
              // 仅当为日历模式显示周标题
              _buildWeekdayHeader(),
              // 日历日期格子，支持日和周的高亮逻辑

              _buildCalendarGrid(calendarRows, selectedDate),
              // TODO: 你可以扩展 month 类型的展示
              SizedBox(height: 55.rpx),
              _buildLegend(showLabel),
            ],
          );
        }),
      ),
    );
  }

  Widget _buildWeekdayHeader() {
    return Container(
      constraints: BoxConstraints(minHeight: 90.rpx),
      child: Row(
        children: ["一", "二", "三", "四", "五", "六", "日"].map((day) {
          return Expanded(
            child: Center(
              child: Text(
                day,
                style: TextStyle(
                  color: stringToColor("#FFFFFF"),
                  fontSize: AppConstants().normal_text_fontSize,
                ),
              ),
            ),
          );
        }).toList(),
      ),
    );
  }

  Widget _buildCalendarGrid(
      List<List<DateTime>> calendarRows, DateTime? selectedDate) {
    final isMonthSelected = widget.type == 3;

    Widget content = Column(
      children: calendarRows.map((week) {
        final isWeekSelected = widget.type == 2 &&
            selectedDate != null &&
            week.any((d) =>
                d.year == selectedDate.year &&
                d.month == selectedDate.month &&
                d.day == selectedDate.day);

        final row = Row(
          children: week.map((date) {
            if (date.year == 0) {
              return const Expanded(child: SizedBox.shrink());
            }

            final isSelected = widget.type == 1 &&
                selectedDate != null &&
                date.year == selectedDate.year &&
                date.month == selectedDate.month &&
                date.day == selectedDate.day;

            return Expanded(
              child: SleepdateWidget(
                highlightColor: widget.highlightColor, // ✅ 传入高亮颜色
                date: date,
                isSelected: isSelected,
                onTap: () {
                  calendarController.selectDate(date);
                  widget.onDateSelected?.call(date);
                  Get.back();
                },
              ),
            );
          }).toList(),
        );

        if (isWeekSelected) {
          return Container(
            decoration: BoxDecoration(
              color: widget.highlightColor,
              borderRadius:
                  BorderRadius.circular(AppConstants().button_container_radius),
            ),
            padding: EdgeInsets.symmetric(vertical: 6.rpx),
            margin: EdgeInsets.symmetric(vertical: 6.rpx),
            child: row,
          );
        } else {
          return row;
        }
      }).toList(),
    );

    // 如果是月份模式，包一层黑色背景容器
    if (isMonthSelected && selectedDate != null) {
      final displayedMonth = calendarController.displayedMonth.value;

      final isSameMonth = displayedMonth.year == selectedDate.year &&
          displayedMonth.month == selectedDate.month;

      if (isSameMonth) {
        // ✅ 当前显示的月 == 当前选中的月 → 加高亮外框
        return Container(
          decoration: BoxDecoration(
            color: widget.highlightColor, // 背景淡色
            borderRadius:
                BorderRadius.circular(AppConstants().normal_container_radius),
            // border: Border.all(
            //   color: widget.highlightColor,
            //   width: 2.rpx,
            // ),
          ),
          // padding: EdgeInsets.symmetric(vertical: 0.rpx, horizontal: 0.rpx),
          // margin: EdgeInsets.symmetric(vertical: 0.rpx),
          child: content,
        );
      } else {
        return content;
      }
    } else {
      return content;
    }
  }

  Widget _buildLegend(List<Map<String, dynamic>> showLabel) {
    return Wrap(
      spacing: 20.rpx,
      runSpacing: 20.rpx,
      children: showLabel.map((item) {
        return Container(
          padding: EdgeInsets.all(5.rpx),
          child: Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              Container(
                width: 20.rpx,
                height: 20.rpx,
                decoration: BoxDecoration(
                  color: item["color"],
                  borderRadius: BorderRadius.circular(10.rpx),
                ),
              ),
              SizedBox(width: 8.rpx),
              Text(
                item["name"],
                style: TextStyle(
                  color: Colors.white,
                  fontSize: 24.rpx,
                ),
              ),
            ],
          ),
        );
      }).toList(),
    );
  }
}