/// <summary>
/// 从数据库获取数据
/// <param name="catalog"></param>
/// <param name="isBackGround"></param>
/// <returns></returns>
private async Task <string> GetCatafromDatabase(BookCatalog catalog, bool isBackGround = true)
{
string html = null;
await Task.Run(() =>
{
try
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
IsLoading = true;
});
var item = this.BookEntity.CatalogList.FirstOrDefault(p => p.CatalogUrl == catalog.CatalogUrl);
if (item != null)
{
var content = DBBookCatalogContent.SelectBookCatalogContent(AppDataPath.GetBookDBPath(BookEntity.BookID), item.CatalogUrl);
if (content != null)
{
html = content.Content;
}
}
}
catch (Exception)
{
}
finally
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
IsLoading = false;
});
}
});
return(html);
}
private async void OnUpdateCommand()
{
var reslut = LocalBookList.FirstOrDefault(p => !string.IsNullOrEmpty(p.UnReadCountData));
if (reslut != null)
{
ToastHeplper.ShowMessage("开始更新。");
}
else
{
ToastHeplper.ShowMessage("无更新，请稍后再试。");
IsUpdating = false;
return;
}
IsUpdating = true;
Task[] tasks = new Task[LocalBookList.Count];
for (int j = 0; j < LocalBookList.Count; j++)
{
var item = LocalBookList[j];
tasks[j] = Task.Run((Action)(async() =>
{
try
{
if (item.UnDownloadCatalogList == null || item.UnDownloadCatalogList.Count == 0)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
item.UnReadCountData = "";
});
return;
}
var list = new List <BookCatalog>();
item.UnDownloadCatalogList.ToList().ForEach(p => list.Add(p));
for (int i = 0; i < list.Count; i++)
{
if (!IsUpdating)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
item.UnReadCountData = " " + item.UnDownloadCatalogList.Count.ToString();
});
break;
}
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
item.UnReadCountData = "正在更新(" + "剩余" + (list.Count - i).ToString() + ")";
});
string html = await AnalysisContentService.GetHtmlContent(new HttpHelper(), list[i].CatalogUrl);
if (!string.IsNullOrEmpty(html))
{
BookCatalogContent content = new BookCatalogContent()
{
BookID = item.BookID,
CatalogUrl = list[i].CatalogUrl,
Content = html
};
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
item.NewestChapterName = list[i].CatalogName;
item.NewestChapterUrl = list[i].CatalogUrl;
item.UpdateTime = DateTime.Now.ToString();
if (item.CatalogList == null)
{
item.CatalogList = new ObservableCollection <BookCatalog>();
}
item.CatalogList.Add(list[i]);
item.UnDownloadCatalogList.Remove(list[i]);
if (i == list.Count - 1)
{
item.UnReadCountData = null;
}
});
lock (obj)
{
DBBookCatalog.InsertOrUpdateBookCatalog(AppDataPath.GetBookDBPath(item.BookID), list[i]);
DBBookCatalogContent.InsertOrUpdateBookCatalogContent(AppDataPath.GetBookDBPath(item.BookID), content);
DBLocalBook.InsertOrUpdateBookEntity(AppDataPath.GetLocalBookDBPath(), item);
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}));
}
await Task.Factory.ContinueWhenAll(tasks, completedTasks =>
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
IsUpdating = false;
});
});
}
public async void StartNewFastDownLoadInstance(DowmLoadEntity temp)
{
Stopwatch watch = new Stopwatch();
watch.Start();
IsDownLoading = true;
int count = 10;
temp.IsFast = true;
if (temp.Entity.CatalogList == null || temp.Entity.CatalogList.Count == 0)
{
return;
}
temp.ContentList = new List <BookCatalogContent>();
count = temp.Entity.CatalogList.Count >= count ? count : temp.Entity.CatalogList.Count;
Task[] tasks = new Task[count];
var groups = Split <BookCatalog>(temp.Entity.CatalogList, count);
int index = 0;
if (!string.IsNullOrEmpty(temp.Entity.Cover))
{
try
{
StorageFolder storageFolder = await StorageFolder.GetFolderFromPathAsync(AppDataPath.GetLocalBookCoverFolderPath());
StorageFile file = null;
string filename = temp.Entity.BookID + ".jpg";
if (!File.Exists(filename))
{
file = await storageFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
}
file = await storageFolder.GetFileAsync(filename);
using (var stream = await file.OpenReadAsync())
{
if (stream.Size <= 0)
{
var tmpfile = await storageFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
var http = new HttpClient();
var data = await http.GetByteArrayAsync(temp.Entity.Cover);
await FileIO.WriteBytesAsync(tmpfile, data);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(temp.Entity.BookName + " 下载封面失败");
}
}
try
{
foreach (var list in groups)
{
tasks[index] = await Task.Factory.StartNew(async() =>
{
HttpHelper http = new HttpHelper();
foreach (var catalog in list)
{
if (temp.IsPause)
{
return;
}
if (string.IsNullOrEmpty(catalog.CatalogUrl))
{
continue;
}
try
{
string html = await GetHtmlData(catalog.CatalogUrl, http);
if (string.IsNullOrEmpty(html))
{
html = GetHtmlData(catalog.CatalogUrl, http).Result;
}
if (string.IsNullOrEmpty(html))
{
Debug.WriteLine("*******下载失败****** :" + temp.Entity.BookName + " " + catalog.CatalogName + " " + catalog.CatalogUrl);
}
else
{
Debug.WriteLine("下载完成 :" + temp.Entity.BookName + " " + catalog.CatalogName + " " + catalog.CatalogUrl);
}
BookCatalogContent content = new BookCatalogContent()
{
BookID = catalog.BookID,
CatalogUrl = catalog.CatalogUrl,
Content = html,
};
temp.ContentList.Add(content);
if (IsFrameContent)
{
DispatcherHelper.CheckBeginInvokeOnUI(temp.SetProcessValue);
//await Task.Factory.StartNew((obj) =>
//{
// temp.SetProcessValue();
//}, null, new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
continue;
}
}
});
index++;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
temp.IsPause = true;
}
await Task.Factory.ContinueWhenAll(tasks, (obj) =>
{
if (temp.IsPause)
{
if (DownLoadList.Contains(temp))
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
this.DownLoadList.Remove(temp);
});
}
if (File.Exists(AppDataPath.GetLocalBookCoverPath(temp.Entity.BookID)))
{
File.Delete(AppDataPath.GetLocalBookCoverPath(temp.Entity.BookID));
}
return;
}
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
temp.SetProcessValue();
temp.Entity.LastReadChapterName = null;
temp.Entity.LastReadChapterUrl = null;
temp.Entity.IsLocal = true;
var catalog = temp.Entity.CatalogList.OrderBy(p => p.Index).ToList().LastOrDefault();
if (catalog != null)
{
temp.Entity.NewestChapterName = catalog.CatalogName;
temp.Entity.NewestChapterUrl = catalog.CatalogUrl;
}
});
DBBookCatalogContent.InsertOrUpdateBookCatalogContents(AppDataPath.GetBookDBPath(temp.Entity.BookID), temp.ContentList);
DBBookCatalog.InsertOrUpdateBookCatalogs(AppDataPath.GetBookDBPath(temp.Entity.BookID), temp.Entity.CatalogList.ToList());
lock (isAdd1)
{
DBLocalBook.InsertOrUpdateBookEntity(AppDataPath.GetLocalBookDBPath(), temp.Entity);
}
try
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
this.DownLoadList.Remove(temp);
ViewModelInstance.Instance.LocalBookPage.LocalBookList.Add(temp.Entity);
ToastHeplper.ShowMessage(temp.Entity.BookName + "下载完毕，点击“本地图书”查看");
});
}
catch (Exception ex)
{
this.DownLoadList.Remove(temp);
ToastHeplper.ShowMessage(temp.Entity.BookName + "下载失败");
Debug.WriteLine(ex.Message);
}
finally
{
if (this.DownLoadList.Count == 0)
{
this.IsDownLoading = false;
}
}
watch.Stop();
Debug.WriteLine("共用时：" + watch.Elapsed.TotalSeconds);
});
}
public void StartNewCommonDownLoadInstance(DowmLoadEntity temp)
{
bool result = false;
IsDownLoading = true;
temp.IsFast = false;
Task task = Task.Run(async() =>
{
try
{
int startIndex = 0;
//适用于暂停然后重新开始
if (temp.CurrentCatalog != null)
{
if (temp.Entity.CatalogList != null && temp.Entity.CatalogList.Count > 0)
{
var catalog = temp.Entity.CatalogList.FirstOrDefault(p => p.CatalogUrl == temp.CurrentCatalog.CatalogUrl);
if (catalog != null)
{
startIndex = temp.Entity.CatalogList.IndexOf(catalog);
}
}
}
BookEntity entity = temp.Entity;
int count = temp.Entity.CatalogList.Count;
HttpHelper http = new HttpHelper();
for (int i = startIndex; i < count; i++)
{
if (temp.IsPause)
{
// break;
return;
}
try
{
var item = temp.Entity.CatalogList[i];
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
temp.CurrentCatalog = item;
temp.CurrentIndex = i + 1;
temp.ProgressValue = Math.Round(((double)item.Index / (double)temp.Entity.CatalogList.Count), 3) * 100;
});
string html = await GetHtmlData(item.CatalogUrl, http);
BookCatalogContent content = new BookCatalogContent()
{
BookID = item.BookID,
CatalogUrl = item.CatalogUrl,
Content = html
};
lock (isAdd1)
{
if (!string.IsNullOrEmpty(item.CatalogUrl))
{
DBBookCatalog.InsertOrUpdateBookCatalog(AppDataPath.GetBookDBPath(temp.Entity.BookID), item);
}
if (!string.IsNullOrEmpty(content.CatalogUrl))
{
DBBookCatalogContent.InsertOrUpdateBookCatalogContent(AppDataPath.GetBookDBPath(temp.Entity.BookID), content);
}
}
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
temp.Entity.NewestChapterName = item.CatalogName;
temp.Entity.NewestChapterUrl = item.CatalogUrl;
});
}
catch (Exception)
{
continue;
}
}
result = true;
}
catch (Exception)
{
result = false;
}
finally
{
if (result)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
lock (isAdd2)
{
temp.Entity.LastReadChapterName = null;
temp.Entity.LastReadChapterUrl = null;
DBLocalBook.InsertOrUpdateBookEntity(AppDataPath.GetLocalBookDBPath(), temp.Entity);
}
this.DownLoadList.Remove(temp);
if (this.DownLoadList.Count == 0)
{
this.IsDownLoading = false;
}
temp.Entity.IsLocal = true;
ViewModelInstance.Instance.LocalBookPage.LocalBookList.Add(temp.Entity);
ToastHeplper.ShowMessage(temp.Entity.BookName + "下载完毕，点击“本地图书”查看");
});
}
else
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
if (!temp.IsPause)
{
this.DownLoadList.Remove(temp);
ToastHeplper.ShowMessage(temp.Entity.BookName + "下载失败");
}
else
{
// Services.ToastHeplper.ShowMessage(temp.Entity.BookName + "下载已暂停");
}
});
}
}
});
}