/*
 * Copyright (C) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function getBusyTime(
  initFreqResult: Array<unknown>,
  initStateResult: Array<unknown>,
  sampleMap: Map<string, unknown>,
  leftStartNs: number,
  rightEndNs: number
): void {
  if (initFreqResult.length === 0 || initStateResult.length === 0) {
    return;
  }
  let handle = (result: Array<unknown>, startNS: number): Array<unknown> => {
    //@ts-ignore
    let firstDataIndex = result.findIndex((a) => a.ts > startNS);
    if (firstDataIndex !== 0) {
      result = result.slice(
        firstDataIndex === -1 ? result.length - 1 : firstDataIndex - 1,
        result.length
      );
      // @ts-ignore
      result[0].ts = startNS;
    }
    return result; 
  };

  // @ts-ignore
  let startNS = Math.max(initFreqResult[0].ts, initStateResult[0].ts, leftStartNs);
  initFreqResult = handle(initFreqResult, startNS);
  initStateResult = handle(initStateResult, startNS);
  //处理被框选的freq最后一个数据
  //@ts-ignore
  if (initFreqResult[initFreqResult.length - 1].ts !== rightEndNs) {
    initFreqResult.push({
      ts: rightEndNs,
      //@ts-ignore
      value: initFreqResult[initFreqResult.length - 1].value,
      //@ts-ignore
      filterId: initFreqResult[initFreqResult.length - 1].filterId,
    });
  }
  //处理被框选的freq最后一个数据
  //@ts-ignore
  if (initStateResult[initStateResult.length - 1].ts !== rightEndNs) {
    initStateResult.push({
      ts: rightEndNs,
      //@ts-ignore
      value: initStateResult[initStateResult.length - 1].value,
    });
  }
  handleBusyTimeLogic(initFreqResult, initStateResult, sampleMap, startNS);
}

function handleBusyTimeLogic(
  initFreqResult: Array<unknown>,
  initStateResult: Array<unknown>,
  sampleMap: Map<string, unknown>,
  startNS: number
): void {
  let freqIndex = 1;
  let stateIndex = 1;
  let beginNs = startNS;
  //value和Id的起始值是第0项
  //@ts-ignore
  let freqId = initFreqResult[0].filterId;
  //@ts-ignore
  let freqVal = initFreqResult[0].value;
  //@ts-ignore
  let stateVal = initStateResult[0].value;
  //从index = 1开始循环
  while (freqIndex < initFreqResult.length && stateIndex < initStateResult.length) {
    let newBeginNs = beginNs;
    let newfreqId = freqId;
    let newfreqVal = freqVal;
    let newStateVal = stateVal;
    let busyTime = 0;
    //比较ts值，每次比较取ts相对小的那一项
    //@ts-ignore
    if (initFreqResult[freqIndex].ts < initStateResult[stateIndex].ts) {
      //@ts-ignore
      newfreqVal = initFreqResult[freqIndex].value;
      //@ts-ignore
      newBeginNs = initFreqResult[freqIndex].ts;
      //@ts-ignore
      newfreqId = initFreqResult[freqIndex].filterId;
      freqIndex++;
      //@ts-ignore
    } else if (initFreqResult[freqIndex].ts > initStateResult[stateIndex].ts) {
      //@ts-ignore
      newStateVal = initStateResult[stateIndex].value;
      //@ts-ignore
      newBeginNs = initStateResult[stateIndex].ts;
      stateIndex++;
    } else {
      //@ts-ignore
      newStateVal = initStateResult[stateIndex].value;
      //@ts-ignore
      newfreqVal = initFreqResult[freqIndex].value;
      //@ts-ignore
      newfreqId = initFreqResult[freqIndex].filterId;
      //@ts-ignore
      newBeginNs = initStateResult[stateIndex].ts;
      freqIndex++;
      stateIndex++;
    }
    //取state = 0的情况并根据频率去加等赋值
    if (stateVal === 0) {
      busyTime = newBeginNs - beginNs;
      if (sampleMap.has(freqId + '-' + freqVal)) {
        let obj = sampleMap.get(freqId + '-' + freqVal);
        //@ts-ignore
        obj.busyTime += busyTime;
      }
    }
    beginNs = newBeginNs;
    freqId = newfreqId;
    freqVal = newfreqVal;
    stateVal = newStateVal;
  }
}

self.onmessage = (e: MessageEvent): void => {
  let leftStartNs = (e.data.timeParam.leftNs + e.data.timeParam.recordStartNs) as number;
  let rightEndNs = (e.data.timeParam.rightNs + e.data.timeParam.recordStartNs) as number;
  e.data.cpuFiliterOrder.forEach((a: number) => {
    getBusyTime(
      //@ts-ignore
      e.data.result.filter((f: unknown) => f.cpu === a),
      //@ts-ignore
      e.data.res.filter((f: unknown) => f.cpu === a),
      e.data.sampleMap,
      leftStartNs,
      rightEndNs
    );
  });
  e.data.sampleMap.forEach((a: unknown) => {
  //@ts-ignore
    a.busyTime = parseFloat((a.busyTime / 1000000.0).toFixed(6));
  });

  self.postMessage(e.data.sampleMap);
};