import moment from 'moment';

import {
  getDeviceRealData,
  getDeviceRealDataByTime,
  queryFormCurrentData,
  queryFormHistoryData,
} from '@/services/ProjectAdmin';

const computePrefixExpression = (function() {
  var s1 = [],
    result;
  return function(prefixExpression) {
    s1.length = 0;
    //计算
    while (prefixExpression.length > 0) {
      var o = prefixExpression.shift();
      if (operator_map.indexOf(o) == -1) {
        s1.push(Number(o));
      } else {
        switch (o) {
          case '+': {
            result = s1.pop() + s1.pop();
            break;
          }
          case '-': {
            result = s1.pop() - s1.pop();
            break;
          }
          case '*': {
            result = s1.pop() * s1.pop();
            break;
          }
          case '/': {
            result = s1.pop() / s1.pop();
            break;
          }
        }
        s1.push(result);
      }
    }
    return s1[0];
  };
})();

export async function getOptions(values, datas, formula, projectId) {
  let allDatas = getAllParams(datas, formula);

  let optionsData = getOptionsData(datas, formula, values);

  // 请求接口
  const { plcData, formData } = await queryData(values, allDatas, projectId);

  optionsData = optionsData.map(item => {
    const paramsInfo = item.paramsInfo;
    let res;
    if (paramsInfo.data_type == 0) {
      // plc数据
      res = findPlcData(paramsInfo, plcData, values.timeType);
    } else if (paramsInfo.data_type == 1) {
      // form数据
      res = findFormData(paramsInfo, formData, values.timeType);
    } else if (paramsInfo.data_type == 2) {
      // 获取公式的值
      res = getFormulaData(item.paramsInfo, plcData, formData, values.timeType);
    }
    return { ...item, ...res };
  });
  return {
    ...values,
    data: optionsData,
  };
}

// 根据表单的数据项获取请求参数
function getFormParams(datas, projectId) {
  let params = {};
  datas.forEach(item => {
    if (!params[item.data_name]) params[item.data_name] = [];
    params[item.data_name].push(item.data_title);
  });
  return Object.keys(params).map(data_name => ({
    formName: data_name,
    titles: params[data_name],
    projectId,
  }));
}

async function queryData(values, datas, projectId) {
  let plcDatas = [],
    formDatas = [];
  datas.forEach(item => {
    if (item.data_type == 0) {
      plcDatas.push(item);
    } else {
      formDatas.push(item);
    }
  });

  // 根据params获取form的数据
  var formData = await getFormData(values, formDatas, projectId);
  var plcData = await getPlcData(values, plcDatas);
  if (values.timeType) {
    // 获得时间轴全集
    let times = getTimes(plcData[0]?.data, formData[0]?.data);

    // 根据时间全集补填数据
    formatData(plcData, times);
    formatData(formData, times);
  }
  return {
    plcData,
    formData,
  };
}

// 根据时间进行格式化数据
function formatData(datas, times) {
  datas.forEach(item => {
    // 默认数据
    let newItemData = [];
    let i = 0;
    times.forEach(t => {
      if (item.data[i]?.htime != t) {
        // 空缺时间要补0
        newItemData.push({
          htime: t,
          val: 0,
        });
      } else {
        newItemData.push(item.data[i]);
        i++;
      }
    });
    // 使用新值
    item.data = newItemData;
  });
}
function getTimes(plcTimes = [], formTimes = []) {
  let times = {};

  plcTimes.forEach(item => {
    times[item.htime] = true;
  });
  formTimes.forEach(item => {
    times[item.htime] = true;
  });
  return Object.keys(times).sort((a, b) => new Date(a) - new Date(b));
}
async function getFormData(values, datas, projectId) {
  let arrtData = values.data || [];
  const params = getFormParams(datas, projectId);
  if (!values.timeType) {
    // 请求最新数据
    return await getFormCurrentData(params, values);
  } else {
    // 请求历史数据
    return await getFormHistoryData(params, values);
  }
}
// 请求表单最新数据
async function getFormCurrentData(params, values) {
  const { timeType, date } = values;
  let data = [];
  for (let i = 0; i < params.length; i++) {
    const resData = await queryFormCurrentData(params[i]);
    data = [...data, ...resData];
  }
  return data;
}

// 请求表单历史数据
async function getFormHistoryData(params, values) {
  const { timeType, date } = values;
  let sTime, eTime;
  let data = [];
  // -1为自选日期  从date内获取时间
  if (timeType == -1) {
    let clear = { hour: 0, minute: 0, second: 0, millisecond: 0 };
    eTime = moment(date[1])
      .set(clear)
      .format('YYYY-MM-DD HH:mm:ss');
    sTime = moment(date[0])
      .set(clear)
      .format('YYYY-MM-DD HH:mm:ss');
  } else {
    let currentDate = moment();
    eTime = currentDate.format('YYYY-MM-DD HH:mm:ss');
    sTime = currentDate.add(-1 * timeType, 'hour').format('YYYY-MM-DD HH:mm:ss');
  }

  for (let i = 0; i < params.length; i++) {
    const resData = await queryFormHistoryData({ ...params[i], eTime, sTime });
    data = [...data, ...resData];
  }
  return data;
}
async function getPlcData(values, datas) {
  let arrtData = values.data || [];
  let params = getSingleData(datas);
  if (!values.timeType) {
    let res = await getData(params, values);
    return res.data;
  } else {
    let singleData = [];
    for (let i = 0; i < params.length; i++) {
      const item = params[i];
      let res = await getData(item, values);
      singleData.push({
        paramsInfo: item,
        name: item.deviceName,
        data: (res.data || []).map(item => {
          return {
            val: Number(item.val),
            htime: moment(item.htime_at).format('YYYY-MM-DD HH:mm:ss'),
          };
        }),
      });
    }
    return singleData;
  }
}

// 根据数据项获取请求参数
function getSingleData(datas) {
  let params = [];
  datas.forEach(({ device_id, device_items, seq }) => {
    if (device_id && device_items) {
      params.push({
        deviceName: seq,
        deviceId: device_id,
        deviceItems: device_items,
      });
    }
  });
  return params;
}
function findPlcData(paramsInfo, plcData, timeType) {
  // 实时数据与历史数据结构不一致  需判断
  if (timeType) {
    return plcData.find(resItem => resItem.paramsInfo.deviceName == paramsInfo.seq);
  } else {
    let res = plcData.find(resItem => resItem.alias == paramsInfo.seq);
    return {
      name: res.alias,
      value: res.val,
    };
  }
}
function findFormData(paramsInfo, formData, timeType) {
  // 实时数据与历史数据结构不一致  需判断
  if (timeType) {
    return formData.find(resItem => resItem.name == paramsInfo.data_title);
  } else {
    let res = formData.find(resItem => resItem.title == paramsInfo.data_title);
    return {
      name: res.title,
      value: res.value,
    };
  }
}

function getAllParams(datas, formula) {
  let allDatas = [...datas];
  formula.forEach(f => {
    f.params.forEach(params => {
      if (params.data_type == 0) {
        if (!datas.find(item => item.seq == params.seq)) {
          allDatas.push(params);
        }
      } else {
        if (!datas.find(item => item.data_title == params.data_title)) {
          allDatas.push(params);
        }
      }
    });
  });
  return allDatas;
}

function getOptionsData(datas, formula, values) {
  let valuesData = values.data || [];

  let optionsData = [];
  formula.forEach((item, index) => {
    var arrData = valuesData[index] || {};
    item.data_type = 2;
    arrData.paramsInfo = item;
    optionsData.push(arrData);
  });
  datas.forEach((data, index) => {
    var arrData = valuesData[index + formula.length] || {};
    arrData.paramsInfo = data;
    optionsData.push(arrData);
  });
  return optionsData;
}

var DATA_CACHE = {};
// 请求plc数据
async function getData(params, values) {
  const { timeType, date, size, interval, aggregator } = values;
  let key, etime, stime;
  if (!timeType) {
    key = `${params.map(item => item.deviceItems).join(',')}-${timeType}`;
  } else if (timeType != -1) {
    key = `${params.deviceItems}-${timeType}-${size}-${interval}-${aggregator}`;
  } else {
    let clear = { hour: 0, minute: 0, second: 0, millisecond: 0 };
    etime = moment(date[1]).set(clear) * 1;
    stime = moment(date[0]).set(clear) * 1;
    key = `${params.deviceItems}-${stime}-${etime}-${size}-${interval}-${aggregator}`;
  }
  if (!DATA_CACHE[key]) {
    if (!timeType) {
      DATA_CACHE[key] = await getDeviceRealData(params);
    } else {
      if (timeType != -1) {
        let currentDate = moment();
        etime = currentDate * 1;
        stime = currentDate.add(-1 * timeType, 'hour') * 1;
      }
      DATA_CACHE[key] = await getDeviceRealDataByTime({
        deviceid: params.deviceId * 1,
        dataitemid: params.deviceItems,
        stime,
        etime,
        size,
        interval,
        aggregator,
      });
    }
  }
  return DATA_CACHE[key];
}

function getFormulaData(formula, plcData, formData, timeType) {
  let expression = [...formula.expression];
  let resDatas = formula.params.map(params => {
    let res;
    if (params.data_type == 0) {
      res = findPlcData(params, plcData, timeType);
      return {
        ...params,
        ...res,
      };
    } else {
      res = findFormData(params, formData, timeType);
      return {
        ...params,
        ...res,
      };
    }
  });

  if (timeType) {
    let optionsData = [];
    // 获取时间
    let time = resDatas[0].data.map(item => item.htime);
    time.forEach((htime, index) => {
      resDatas.forEach(params => {
        // 根据index去替换表达式中对应的值
        expression[params.index] = params.data[index].val || 0;
      });
      optionsData.push({
        htime: moment(htime).format('YYYY-MM-DD HH:mm:ss'),
        val: computePrefixExpression([...expression]),
      });
    });
    return {
      data: optionsData,
      name: formula.FormulaName,
    };
  } else {
    resDatas.forEach(params => {
      // 根据index去替换表达式中对应的值
      expression[params.index] = params.value || 0;
    });
    return {
      value: computePrefixExpression([...expression]),
      name: formula.FormulaName,
    };
  }
}