// Copyright (c) 2021 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.

import { type LtpoStruct } from '../../database/ui-worker/ProcedureWorkerLTPO';
import { CHART_OFFSET_LEFT, MAX_COUNT, QueryEnum, TraficEnum } from './utils/QueryEnum';
import { threadPool } from '../SqlLite';
import { TraceRow } from '../../component/trace/base/TraceRow';

export function lostFrameSender(tName: String, fName: String, row: TraceRow<LtpoStruct>): Promise<LtpoStruct[]> {
  let trafic: number = TraficEnum.Memory;
  let width = row.clientWidth - CHART_OFFSET_LEFT;
  if ((trafic === TraficEnum.SharedArrayBuffer || trafic === TraficEnum.Memory) && !row.sharedArrayBuffers) {
    row.sharedArrayBuffers = {
      dur: new SharedArrayBuffer(Float64Array.BYTES_PER_ELEMENT * MAX_COUNT),
      startTime: new SharedArrayBuffer(Float64Array.BYTES_PER_ELEMENT * MAX_COUNT),
      presentId: new SharedArrayBuffer(Float64Array.BYTES_PER_ELEMENT * MAX_COUNT),
    };
  }
  return new Promise((resolve): void => {
    threadPool.submitProto(
      QueryEnum.LostFrameData,
      {
        threadName: tName,
        funcName: fName,
        startNS: TraceRow.range?.startNS || 0,
        endNS: TraceRow.range?.endNS || 0,
        recordStartNS: window.recordStartNS,
        recordEndNS: window.recordEndNS,
        width: width,
        trafic: trafic,
        sharedArrayBuffers: row.sharedArrayBuffers,
      },
      (res: unknown, len: number, transfer: boolean): void => {
        resolve(arrayBufferHandler(transfer ? res : row.sharedArrayBuffers, len));
      }
    );
  });
}

function arrayBufferHandler(res: any, len: number): LtpoStruct[] {
  let outArr: LtpoStruct[] = [];
  let startTime = new Float64Array(res.startTime);
  let dur = new Float64Array(res.dur);
  let id = new Uint16Array(res.id);
  let presentId = new Float64Array(res.presentId);
  for (let i = 0; i < len; i++) {
    outArr.push({
      id: id[i],
      dur: dur[i],
      startTime: startTime[i],
      presentId: presentId[i],
    } as unknown as LtpoStruct);
  }
  return outArr;
}