import React, { useEffect, useState, useRef } from 'react';
import aa from '@/assets/images/圖標(biāo).png';
import bb from '@/assets/images/圖標(biāo)1.png';
import cc from '@/assets/images/圖標(biāo)2.png';
import dd from '@/assets/images/圖標(biāo)3.png';
import * as echarts from 'echarts';
import { salesStatistics } from './request';
 
const OrderSalesStatistics = () => {
  const sale = (data) => {
    const xAxisData = data.map((item) => item.month);
    const seriesData = data.map((item) => item.price);
 
    const saleOption = {
      title: {
        text: '銷售總金額（元）/月',
        left: 'left',
      },
      tooltip: {
        trigger: 'axis',
        axisPointer: {
          type: 'shadow',
        },
      },
      grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true,
      },
      xAxis: [
        {
          type: 'category',
          data: xAxisData,
          axisTick: {
            alignWithLabel: true,
          },
          axisLabel: {
            interval: 0, // 強制顯示所有標(biāo)簽
            formatter: function (value, index) {
              // 僅顯示 1、3、5、7、9、11 月的標(biāo)簽
              if ((index + 1) % 2 !== 0) {
                return value + '月';
              } else {
                return '';
              }
            },
          },
        },
      ],
      yAxis: [
        {
          type: 'value',
          splitLine: {
            show: false, // 取消 y 軸的橫線
          },
        },
      ],
      series: [
        {
          name: 'Direct',
          type: 'bar',
          barWidth: '60%',
          data: seriesData,
          itemStyle: {
            color: '#d48ca0',
          },
        },
      ],
    };
    const saleEchart = echarts.init(document.getElementById('totalSalesAmount'));
    saleEchart.setOption(saleOption);
  };
  const teachers = (data) => {
    const seriesData = data.map((item) => ({
      name: item.teacher_name,
      value: item.price,
    }));
    const option = {
      title: {
        text: '老師業(yè)績分布TOP10',
        left: 'left',
      },
      tooltip: {
        trigger: 'item',
      },
      legend: {
        orient: 'horizontal', // 將 orient 設(shè)置為 'horizontal'
        top: '5%', // 調(diào)整 top 屬性的值，控制圖例位置
      },
      series: [
        {
          name: 'Access From',
          type: 'pie',
          radius: '50%',
          data: seriesData,
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)',
            },
          },
          labelLine: {
            show: false,
          },
          label: {
            // 添加label屬性，在formatter函數(shù)中獲取price和ratio
            formatter: function (params) {
              const { price, ratio } = data[params.dataIndex];
              return `${params.name} ${(ratio * 100).toFixed(2)}%`;
            },
          },
        },
      ],
    };
 
    const teacherEchart = echarts.init(document.getElementById('teacherPerformance'));
    teacherEchart.setOption(option);
  };
 
  const books = (data) => {
    const seriesData = data.map((item) => ({
      name: item.book_name,
      value: item.price,
    }));
    console.log('seriesData-book', seriesData);
 
    const option = {
      title: {
        text: '書籍業(yè)績分布TOP10',
        left: 'left',
      },
      tooltip: {
        trigger: 'item',
        formatter: function (params) {
          return `<div style="display: flex; align-items: center;">
                          <div style="width: 10px; height: 10px; border-radius: 50%; background-color: ${params.color}; margin-right: 10px;"></div>
                          <span style="color: ${params.color}">鏡像地址</span> : ${params.name}
                        </div>`;
        },
      },
      series: [
        {
          name: '庫存情況',
          type: 'pie',
          radius: '68%',
          center: ['50%', '50%'],
          clockwise: false,
          data: seriesData,
          label: {
            normal: {
              textStyle: {
                color: '#999',
                fontSize: 14,
              },
            },
          },
          labelLine: {
            //取消選中餅圖后往外指的小橫線
            normal: {
              show: false,
            },
          },
          itemStyle: {
            //餅圖之間的間距
            normal: {
              borderWidth: 4,
              borderColor: '#ffffff',
            },
            emphasis: {
              borderWidth: 0,
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)',
            },
          },
        },
      ],
      color: ['#00acee', '#52cdd5', '#79d9f1', '#a7e7ff', '#c8efff'],
      backgroundColor: '#fff',
    };
 
    const bookEchart = echarts.init(document.getElementById('bookPerformance'));
    bookEchart.setOption(option);
  };
 
  const [tabArr, setTabArr] = useState([]);
  const [type, setType] = useState('');
 
  // 在組件內(nèi)部定義 refs , 解決一刷新就消失
  const totalSalesAmountRef = useRef(null);
  const teacherPerformanceRef = useRef(null);
  const bookPerformanceRef = useRef(null);
 
  const initAllEcharts = async () => {
    const data = await salesStatistics();
    let { salesAmount, teacher, book, order_num, buy_num, average, income } = data;
    setType(data.type);
    console.log('type', type);
    if (data.type === 2) {
      sale(salesAmount);
      books(book);
    } else if (data.type === 1) {
      sale(salesAmount);
      teachers(teacher);
    }
 
    setTabArr([
      { name: '總訂單數(shù)', value: order_num },
      { name: '總購買人數(shù)', value: buy_num },
      { name: '平均客單價', value: average },
      { name: '預(yù)計總收入', value: income },
    ]);
  };
 
  useEffect(() => {
    initAllEcharts();
  }, []);
 
  useEffect(() => {
    const initCharts = async () => {
      const data = await salesStatistics();
      let { salesAmount, teacher, book, order_num, buy_num, average, income } = data;
      setType(data.type);
 
      if (data.type === 2) {
        if (totalSalesAmountRef.current && bookPerformanceRef.current) {
          sale(salesAmount, totalSalesAmountRef.current);
          books(book, bookPerformanceRef.current);
        }
      } else if (data.type === 1) {
        if (totalSalesAmountRef.current && teacherPerformanceRef.current) {
          sale(salesAmount, totalSalesAmountRef.current);
          teachers(teacher, teacherPerformanceRef.current);
        }
      }
 
      setTabArr([
        { name: '總訂單數(shù)', value: order_num },
        { name: '總購買人數(shù)', value: buy_num },
        { name: '平均客單價', value: average },
        { name: '預(yù)計總收入', value: income },
      ]);
    };
 
    initCharts();
  }, []);
 
  return (
    <div className='sales'>
      <div className='items'>
        {tabArr.map((item, index) => (
          <div className='item' key={Math.random()}>
            <div className='img'>
              {index === 0 && <img src={aa} alt='' />}
              {index === 1 && <img src={bb} alt='' />}
              {index === 2 && <img src={cc} alt='' />}
              {index === 3 && <img src={dd} alt='' />}
            </div>
            <div className='cont'>
              <div className='title'>{item.name}</div>
              <div className='total'>{item.value}</div>
            </div>
          </div>
        ))}
      </div>
 
      <div className='echarts'>                       // html部分也要加上ref
        {type === 1 ? (
          <>
            <div className='echarts-item' id='totalSalesAmount' ref={totalSalesAmountRef}></div>
            <div className='echarts-item' id='teacherPerformance' ref={teacherPerformanceRef}></div>
          </>
        ) : type === 2 ? (
          <>
            <div className='echarts-item' id='totalSalesAmount' ref={totalSalesAmountRef}></div>
            <div className='echarts-item' id='bookPerformance' ref={bookPerformanceRef}></div>
          </>
        ) : null}
      </div>
    </div>
  );
};
 
export default OrderSalesStatistics;