/// <summary>
/// Pause is stop
/// </summary>
/// <param name="_targetResource"></param>
/// <returns></returns>
public ExecuteResult DownloadPause(T _targetResource)
{
if (_targetResource.ResourceInfo == null)
{
return(ExecuteResult.Faile);
}
lock (m_lockList)
{
string _resourceKey = _targetResource.ResourceInfo.ResourceKey;
if (m_DownloadResourceList.ContainsKey(_resourceKey))
{
var _item = m_DownloadResourceList[_resourceKey];
if (_item != null)
{
_item.DownloadStop();
OnDownloadStatusChanged.Invoke(this, new DownloadStatusChangedEventArgs(_item, DownloadStatus.DownloadPause));
m_DownloadResourceList.Remove(_resourceKey);
return(ExecuteResult.Success);
}
}
return(ExecuteResult.Faile);
}
}
private void updateDownloadStatus()
{
if (_downloadStatus.RemoteFileSize <= 0 || _downloadStatus.BytesTransferred <= 0)
{
return;
}
_downloadStatus.PercentComplete =
Math.Round((decimal)_downloadStatus.BytesTransferred * 100 / (decimal)_downloadStatus.RemoteFileSize, 2);
var elapsedTime = DateTimeOffset.UtcNow - _downloadStatus.StartTime;
_downloadStatus.BytesPerSecond = _downloadStatus.BytesTransferred / elapsedTime.TotalSeconds;
var rawEta = _downloadStatus.RemoteFileSize / _downloadStatus.BytesPerSecond;
_downloadStatus.EstimatedCompletionTime = TimeSpan.FromSeconds(rawEta);
OnDownloadStatusChanged?.Invoke(_downloadStatus);
}
/// <summary>
/// If add resource successed, start downloading immediately.
/// </summary>
/// <param name="_targetResource"></param>
/// <returns></returns>
public ExecuteResult AddResource(T _targetResource)
{
if (_targetResource.ResourceInfo == null)
{
return(ExecuteResult.Faile);
}
lock (m_lockList)
{
if (m_DownloadResourceList.ContainsKey(_targetResource.ResourceInfo.ResourceKey))
{
OnDownloadStatusChanged.Invoke(this, new DownloadStatusChangedEventArgs(_targetResource, DownloadStatus.Downloading));
return(ExecuteResult.Success);
}
var minPriorityResource = GetMinPriorityInDownloadingList();
if (IsTargetRescourceHighPriority(_targetResource.ResourceInfo, minPriorityResource.ResourceInfo))
{
// target resource higher, stop the minimum priority in downloading list, change status to WaitForDownload.
LogInstance.Instance.LogInfo($"Stop downloading list resource that min priority[{minPriorityResource.ResourceInfo.ResourceKey}] and start downloan target resource[{_targetResource.ResourceInfo.ResourceKey}].");
minPriorityResource.DownloadStop();
OnDownloadStatusChanged.Invoke(this, new DownloadStatusChangedEventArgs(minPriorityResource, DownloadStatus.WaitForDownload));
m_DownloadResourceList.Add(_targetResource.ResourceInfo.ResourceKey, _targetResource);
_targetResource.OnDownloadingStatusChanged += OnDownloadStatusChanged;
_targetResource.DownloadStart();
OnDownloadStatusChanged.Invoke(this, new DownloadStatusChangedEventArgs(_targetResource, DownloadStatus.Downloading));
return(ExecuteResult.Success);
}
else
{
// the minimum priority higher, change target resource to WaitForDownload.
LogInstance.Instance.LogInfo($"Target resource[{_targetResource.ResourceInfo.ResourceKey}] will wait for download.");
OnDownloadStatusChanged.Invoke(this, new DownloadStatusChangedEventArgs(_targetResource, DownloadStatus.WaitForDownload));
return(ExecuteResult.Success);
}
}
}
