/*
 * Copyright (c) 2023 Fancy Code.
 * 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.
 */
#include "MediaHandle.h"
#include "IHalCpp.h"
#include "ILog.h"
#include "IMediaManager.h"
#include "RecordMp4.h"
#include "StatusCode.h"
#include <chrono>
#include <functional>
#include <memory>
#include <mutex>
#include <thread>
#include <vector>
MediaHandle::MediaHandle(const MediaChannel &mediaChannel, const std::shared_ptr<VCameraHal> &cameraHal)
    : mMediaChannel(mediaChannel), mCameraHal(cameraHal), mTaskRuning(false)
{
}
void MediaHandle::Init(void)
{
    if (mCameraHal == nullptr) {
        LogError("CameraHal is null.\n");
        return;
    }
    auto audioFunc = std::bind(&MediaHandle::GetAudioStreamCallback, this, _1, _2, _3);
    mCameraHal->SetAudioStreamCallback(audioFunc);
    auto videoFunc = std::bind(&MediaHandle::GetVideoStreamCallback, this, _1, _2, _3);
    mCameraHal->SetVideoStreamCallback(videoFunc);
}
void MediaHandle::UnInit(void)
{
    mTaskRuning = false;
    mCv.notify_one();
    if (mTaskTimerThread.joinable()) {
        mTaskTimerThread.join();
    }
    if (mCameraHal) {
        /**
         * @brief Before releasing the class instance, it is necessary to call the UnInit function to ensure that the
         * callback function is cleared elsewhere, otherwise it will crash.
         */
        mCameraHal->SetAudioStreamCallback(nullptr);
        mCameraHal->SetVideoStreamCallback(nullptr);
    }
}
StatusCode MediaHandle::ExecuteTask(std::shared_ptr<VMediaTask> &task)
{
    std::lock_guard<std::mutex> locker(mMutex);
    LogInfo("CameraHandle::ExecuteTask.\n");
    auto runingTask = mCurrentTask.lock();
    if (!mCurrentTask.expired()) {
        if (!runingTask->IsTaskFinished()) {
            LogError("Camera is runing task, can't execute more task.\n");
            return CreateStatusCode(STATUS_CODE_NOT_OK);
        }
    }
    mStreamHandle = std::make_shared<RecordMp4>();
    if (nullptr == mStreamHandle) {
        LogError("Create stream handle failed.\n");
        return CreateStatusCode(STATUS_CODE_NOT_OK);
    }
    mStreamHandle->Init();
    CameraTaskType taskType = TaskTypeConvert(task->GetTaskType());
    CameraTaskParam data(taskType);
    auto code = mCameraHal->StartSingleTask(data);
    if (IsCodeOK(code)) {
        mCurrentTask = task;
        StartTaskTimer();
    }
    else {
        LogError("Execute task failed.\n");
    }
    return code;
}
StatusCode MediaHandle::StopTask(void)
{
    return CreateStatusCode(STATUS_CODE_OK);
}
StatusCode MediaHandle::ClearTask(void)
{
    return CreateStatusCode(STATUS_CODE_OK);
}
void MediaHandle::StartTaskTimer(void)
{
    auto taskTimerThread = [=](std::shared_ptr<MediaHandle> media) {
        LogInfo("StartTaskTimer start.\n");
        media->TaskTimer();
    };
    std::shared_ptr<MediaHandle> media = shared_from_this();
    mTaskTimerThread = std::thread(taskTimerThread, media);
}
void MediaHandle::TaskTimer(void)
{
    constexpr int TASK_TIMER = 1000 * 10;
    mTaskRuning = true;
    while (mTaskRuning) {
        std::unique_lock<std::mutex> lock(mMutex);
        mCv.wait_for(lock, std::chrono::milliseconds(TASK_TIMER), [&] {
            return !mTaskRuning;
        });
        /**
         * @brief If the recording time is over, you need to stop the recording timer here.
         */
        mTaskRuning = false;
    }
    mStreamHandle->UnInit();
    if (mCameraHal) {
        mCameraHal->StopTask();
    }
    mMutex.lock();
    auto runingTask = mCurrentTask.lock();
    if (mCurrentTask.expired()) {
        LogWarning("SdCardHal: monitor is expired.\n");
        return;
    }
    LogInfo("Task finished response to application.\n");
    std::vector<MediaTaskResponse> responses;
    runingTask->Response(responses);
    mCurrentTask.reset();
    mMutex.unlock();
}
CameraTaskType MediaHandle::TaskTypeConvert(const MediaTaskType &type)
{
    return CameraTaskType::END;
}
void MediaHandle::GetVideoStreamCallback(const void *stream, const int &length, const unsigned long long &timeStamp)
{
    mStreamHandle->GetVideoStream(stream, length, timeStamp);
}
void MediaHandle::GetAudioStreamCallback(const void *stream, const int &length, const unsigned long long &timeStamp)
{
    mStreamHandle->GetAudioStream(stream, length, timeStamp);
}