import React, { useState, useEffect, useRef, useCallback } from 'react';
import styled from 'styled-components';
import ReactECharts from 'echarts-for-react';
import * as echarts from 'echarts';
import { apiGet } from '../../utils/request';
import { getDefaultDate } from '../../App';
import { PanelContainer } from '../styled/DashboardStyles';
import useGlobalRefresh from '../../hooks/useGlobalRefresh';

// 组件容器样式
const Container = styled(PanelContainer)`
  width: 100%;
  height:42vh;
  padding: 0;
  position: relative;
  border-radius: 0.2vw;
`;

// 组件标题
const PanelHeader = styled.div`
  position: relative;
  width: 65%;
  height: 1.6vw;
  padding-left: 4%;
  text-align: left;
  line-height: 1.6vw;
  font-size: 0.8vw;
  color: #CCE6FF;
  font-family: 'DingTalk JinBuTi', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  background: url('/component_header_bg.png') no-repeat;
  background-size: 100% 100%;
`;

// 内容容器
const ContentBox = styled.div`
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0.5vw;
  padding-top: 1.2vw;
  height: calc(100% - 1.6vw);
 
`;

// 设备标题
const DeviceTitle = styled.div`
  font-size: 1.2vw;
  color: #CCE6FF;
  margin-bottom: 1vw;
  text-align: left;
  font-family: 'DingTalk JinBuTi', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
`;

// 图表容器
const ChartContainer = styled.div`
  flex: 1;
  display: flex;
  overflow: hidden;
  background: url('/kucunbeijing.png') no-repeat;
  background-size: 100% 100%;
  background-position: center;
`;

// 仪表盘容器
const GaugeContainer = styled.div`
  width: 40%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  padding-right:4%;
`;

// 数据项列表
const DataList = styled.div`
  width: 60%;
  display: flex;
  flex-wrap: wrap;
`;

// 数据项
const DataItem = styled.div`
  width: 50%;
  height: 33.33%;
  display: flex;
  align-items: center;
  padding: 1vw 1vw;
`;

// 数据项图标
const DataIcon = styled.div`
  width: 2vw;
  height: 2vw;
  border-radius: 0.3vw;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-right: 1vw;
`;

// 数据项内容
const DataContent = styled.div`
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
`;

// 数据项标题
const DataTitle = styled.div`
  font-size: 0.8vw;
  color: #CCE6FF;
  margin-bottom: 0.2vw;
`;

// 数据项值
const DataValue = styled.div`
  font-size: 2.3vw;
  color: #FBFDFF;
  font-family: 'DingTalk JinBuTi', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
`;

interface InventoryData {
  totalStock: number;
  equipTotalStock: number;
  equipInputStock: number | null;
  equipOutputStock: number | null;
  equipDrugVarietyNum: number;
  expectedAvailableDays: number;
  equipOutStockDrugVariety: number;
}

// 新增类型定义
type EquipTotalStockItem = {
  name: string;
  value: number;
  color?: string;
};

interface InventoryManagementProps {
  selectedEquipCode: string;
  selectedEquipName: string;
}

const InventoryManagement: React.FC<InventoryManagementProps> = ({ selectedEquipCode, selectedEquipName }) => {
  const chartRef = useRef<ReactECharts>(null);
  const [data, setData] = useState<InventoryData>({
    totalStock: 0,
    equipTotalStock: 0,
    equipInputStock: null,
    equipOutputStock: null,
    equipDrugVarietyNum: 0,
    expectedAvailableDays: 0,
    equipOutStockDrugVariety: 0
  });
  const [chartSize, setChartSize] = useState({ width: 300, height: 300 });
  const [equipTotalStockList, setEquipTotalStockList] = useState<EquipTotalStockItem[]>([]);
  
  // 监听容器大小变化
  useEffect(() => {
    const updateSize = () => {
      if (chartRef.current) {
        const container = chartRef.current.ele;
        if (container) {
          const newWidth = container.clientWidth;
          const newHeight = container.clientHeight;
          
          // 只有当尺寸真正变化且不为0时才更新状态
          if (newWidth > 0 && newHeight > 0 && 
              (Math.abs(newWidth - chartSize.width) > 5 || 
               Math.abs(newHeight - chartSize.height) > 5)) {
            setChartSize({
              width: newWidth,
              height: newHeight
            });
          }
        }
      }
    };
    
    // 初始更新
    setTimeout(updateSize, 300); // 给图表一些渲染时间
    
    // 监听窗口大小变化
    window.addEventListener('resize', updateSize);
    
    return () => {
      window.removeEventListener('resize', updateSize);
    };
  }, [chartSize.width, chartSize.height]);
  
  const fetchData = useCallback(async () => {
    try {
      // 获取默认日期
      const defaultDate = getDefaultDate();
      
      // 直接使用选中的设备代码
      const equipCode = selectedEquipCode;
      
      // 调用新的库存管理接口
      const response = await apiGet('/equipMana/equipInventoryInfo', {
        params: { 
          dateTime: defaultDate,
          equipCode: equipCode
        }
      });
      
      if (response.data && response.data.data) {
        setData({
          totalStock: response.data.data.totalStock || 0,
          equipTotalStock: response.data.data.equipTotalStock || 0,
          equipInputStock: response.data.data.equipInputStock,
          equipOutputStock: response.data.data.equipOutputStock,
          equipDrugVarietyNum: response.data.data.equipDrugVarietyNum || 0,
          expectedAvailableDays: response.data.data.expectedAvailableDays || 0,
          equipOutStockDrugVariety: response.data.data.equipOutStockDrugVariety || 0
        });
        // 修正：适配equipTotalStockList字段
        if (Array.isArray(response.data.data.equipTotalStockList)) {
          const colorArr = ['#4D88FF', '#FFE980', '#4DE1FF', '#8FADCC', '#FFB980', '#B6A2DE', '#5AB1EF', '#FF6666'];
          setEquipTotalStockList(
            response.data.data.equipTotalStockList.map((item: any, idx: number) => ({
              name: item.equipCode ? `设备${item.equipCode}` : `设备${idx+1}`,
              value: item.quantity,
              color: colorArr[idx % colorArr.length]
            }))
          );
        } else {
          setEquipTotalStockList([]);
        }
      }
    } catch (error) {
      console.error('获取库存数据失败:', error);
      // 使用模拟数据（仅用于开发）
      setData({
        totalStock: 19352,
        equipTotalStock: 16856,
        equipInputStock: null,
        equipOutputStock: null,
        equipDrugVarietyNum: 686,
        expectedAvailableDays: 0.0,
        equipOutStockDrugVariety: 0
      });
      setEquipTotalStockList([
        { name: '蓝色部分', value: 25, color: '#4D88FF' },
        { name: '黄色部分', value: 25, color: '#FFE980' },
        { name: '青色部分', value: 25, color: '#4DE1FF' },
        { name: '淡蓝色部分', value: 25, color: '#8FADCC' }
      ]);
    }
  }, [selectedEquipCode]);

  // 组件挂载时获取数据
  useEffect(() => {
    fetchData();
  }, [fetchData]);

  // 当选中的设备代码变化时重新获取数据
  useEffect(() => {
    fetchData();
  }, [selectedEquipCode, fetchData]);

  // 使用全局刷新钩子，指定模块代码'25'
  useGlobalRefresh(fetchData, '25');

  // 获取饼图配置
  const getPieOption = () => {
    // 计算自适应的边框宽度，基于容器大小，但不小于1
    const adaptiveBorderWidth = Math.max(1, Math.min(4, chartSize.width * 0.01));
    
    // 计算字体大小，但设置最小值避免过小
    const titleFontSize = Math.max(12, chartSize.width * 0.05);
    const valueFontSize = Math.max(20, chartSize.width * 0.1);
    const paddingBottom = Math.max(5, chartSize.width * 0.015);
    
    // 饼图缩放比例 - 可以调整这个值来改变饼图大小
    const pieScale = 0.8; // 1.0为标准大小，可增大或减小
    
    // 环宽度控制参数
    const ringWidth = 0.3; // 环宽度，值越大环越宽，值越小环越窄
    const outerRadius = 90 * pieScale; // 外圆半径
    const innerRadius = outerRadius - (outerRadius * ringWidth); // 内圆半径
    
    // 内圆大小控制参数
    const innerCircleScale = 0.45 * pieScale; // 内部黑色圆的大小
    
    // 饼图数据动态生成
    const pieData = (equipTotalStockList && equipTotalStockList.length > 0)
      ? (equipTotalStockList as EquipTotalStockItem[]).map(function(item: EquipTotalStockItem, idx: number) {
          return {
            value: item.value,
            name: item.name,
            itemStyle: { color: item.color || ['#4D88FF', '#FFE980', '#4DE1FF', '#8FADCC'][idx % 4] }
          };
        })
      : [];

    // 如果没有数据，只显示中心label，不渲染pie片
    if (!pieData.length) {
      return {
        backgroundColor: 'transparent',
        series: [
          {
            type: 'pie',
            radius: ['0%', '100%'],
            center: ['50%', '50%'],
            label: {
              position: 'center',
              formatter: function() {
                return '{title|总库存}\n{value|' + data.totalStock + '}';
              },
              rich: {
                title: {
                  color: '#CCE6FF',
                  fontSize: titleFontSize,
                  padding: [0, 0, paddingBottom, 0]
                },
                value: {
                  color: '#fff',
                  fontSize: valueFontSize,
                  fontWeight: 'bold',
                  fontFamily: 'DingTalk JinBuTi, PingFang SC, Microsoft YaHei, Arial, sans-serif'
                }
              }
            },
            data: [{ value: 100, name: '背景', itemStyle: { color: '#041529' } }],
            itemStyle: { color: '#041529' },
            labelLine: { show: false },
            emphasis: { scale: false }
          }
        ]
      };
    }
    return {
      backgroundColor: 'transparent',
      tooltip: {
        trigger: 'item',
        formatter: '{b}: {c} ({d}%)',
        textStyle: { fontSize: Math.max(12, chartSize.width * 0.04) }
      },
      series: [
        {
          type: 'pie',
          radius: [`${innerRadius}%`, `${outerRadius}%`],
          center: ['50%', '50%'],
          startAngle: 0,
          avoidLabelOverlap: false,
          label: { show: false },
          emphasis: { scale: false },
          itemStyle: {
            borderWidth: adaptiveBorderWidth,
            borderColor: '#041529'
          },
          data: pieData
        },
        {
          type: 'pie',
          radius: ['0', `${innerCircleScale * 100}%`],
          center: ['50%', '50%'],
          label: {
            position: 'center',
            formatter: function() {
              return '{title|总库存}\n{value|' + data.totalStock + '}';
            },
            rich: {
              title: {
                color: '#CCE6FF',
                fontSize: titleFontSize,
                padding: [0, 0, paddingBottom, 0]
              },
              value: {
                color: '#fff',
                fontSize: valueFontSize,
                fontWeight: 'bold',
                fontFamily: 'DingTalk JinBuTi, PingFang SC, Microsoft YaHei, Arial, sans-serif'
              }
            }
          },
          itemStyle: {
            color: '#041529'
          },
          data: [
            { value: 100, name: '背景' }
          ]
        }
      ]
    };
  };

  return (
    <Container>
      <PanelHeader>库存管理</PanelHeader>
      <ContentBox>
        <DeviceTitle>设备: {selectedEquipName}</DeviceTitle>
        <ChartContainer>
          <GaugeContainer>
            <ReactECharts
              ref={chartRef}
              option={getPieOption()}
              style={{ height: '100%', width: '100%' }}
              opts={{ renderer: 'canvas' }}
              notMerge={true}
            />
          </GaugeContainer>
          
          <DataList>
            <DataItem>
              <DataIcon>
                <img src="/kucunicon.png" alt="库存图标" style={{ width: '2.5vw', height: '2.5vw' }} />
              </DataIcon>
              <DataContent>
                <DataTitle>库存</DataTitle>
                <DataValue>{data.equipTotalStock}</DataValue>
              </DataContent>
            </DataItem>
            
            <DataItem>
              <DataIcon>
                <img src="/zaikupinzgingshuicon.png" alt="在库品种数图标" style={{ width: '2.5vw', height: '2.5vw' }} />
              </DataIcon>
              <DataContent>
                <DataTitle>设备在库品种数</DataTitle>
                <DataValue>{data.equipDrugVarietyNum}</DataValue>
              </DataContent>
            </DataItem>
            
            <DataItem>
              <DataIcon>
                <img src="/shebeirukuheshuicon.png" alt="设备入库盒数图标" style={{ width: '2.5vw', height: '2.5vw' }} />
              </DataIcon>
              <DataContent>
                <DataTitle>设备入库盒数</DataTitle>
                <DataValue>{data.equipInputStock || 0}</DataValue>
              </DataContent>
            </DataItem>
            
            <DataItem>
              <DataIcon>
                <img src="/shebeichukuheshuicon.png" alt="设备出库盒数图标" style={{ width: '2.5vw', height: '2.5vw' }} />
              </DataIcon>
              <DataContent>
                <DataTitle>设备出库盒数</DataTitle>
                <DataValue>{data.equipOutputStock || 0}</DataValue>
              </DataContent>
            </DataItem>
            
            <DataItem>
              <DataIcon>
                <img src="/yugexiaohaotianshuicon.png" alt="预估可消耗天数图标" style={{ width: '2.5vw', height: '2.5vw' }} />
              </DataIcon>
              <DataContent>
                <DataTitle>预估可消耗天数</DataTitle>
                <DataValue>{data.expectedAvailableDays}</DataValue>
              </DataContent>
            </DataItem>
            
            <DataItem>
              <DataIcon>
                <img src="/queyaolvicon.png" alt="缺药率图标" style={{ width: '2.5vw', height: '2.5vw' }} />
              </DataIcon>
              <DataContent>
                <DataTitle>缺药率&gt;90%品种数</DataTitle>
                <DataValue>{data.equipOutStockDrugVariety}</DataValue>
              </DataContent>
            </DataItem>
          </DataList>
        </ChartContainer>
      </ContentBox>
    </Container>
  );
};

export default InventoryManagement;