private void AddImageIds(ConcurrentBag <string> imageIds, ImageSearchResult result)
{
foreach (var picture in result.Pictures)
{
imageIds.Add(picture.Id);
}
}
public async Task <IEnumerable <Image> > GetImagesAsync()
{
var newImageBag = new ConcurrentBag <Image>();
var imageIds = new ConcurrentBag <string>();
Logger.LogDebug("Start loading images cache");
if (Auth == null)
{
Logger.LogDebug("Loading auth");
Auth = AuthenticationHeaderFactory.GetAuthenticationHeaderAsync().Result;
}
ImageSearchResult result = null;
var url = $"{ImageSearchConfig.BaseUrl}/{ImageSearchConfig.ImageSearchPath}";
try
{
result = await RestHttpProxy.GetWebRequestAsync <ImageSearchResult>(new Uri(url), new RequestConfiguration { AuthenticationValue = Auth });
}
catch (UnauthorizedException)
{
Auth = AuthenticationHeaderFactory.GetAuthenticationHeaderAsync().Result;
result = await RestHttpProxy.GetWebRequestAsync <ImageSearchResult>(new Uri(url), new RequestConfiguration { AuthenticationValue = Auth });
}
Logger.LogDebug($"Getting image ids. Total pages: {result.PageCount}");
this.AddImageIds(imageIds, result);
var getImageIdsContainerTasks = new List <Task>();
for (int i = 1; i < result.PageCount; i++)
{
getImageIdsContainerTasks.Add(Task.Run(async() =>
{
var currentUrl = $"{url}?page={i}";
result = await RestHttpProxy.GetWebRequestAsync <ImageSearchResult>(new Uri(url), new RequestConfiguration {
AuthenticationValue = Auth
});
AddImageIds(imageIds, result);
}));
}
await Task.WhenAll(getImageIdsContainerTasks);
Logger.LogDebug($"Getting image details");
var getImageDetailContainerTasks = new List <Task>();
foreach (var imageId in imageIds)
{
getImageDetailContainerTasks.Add(Task.Run(async() =>
{
var image = await RestHttpProxy.GetWebRequestAsync <Image>(new Uri($"{ImageSearchConfig.BaseUrl}/{ImageSearchConfig.ImageSearchPath}/{imageId}"), new RequestConfiguration {
AuthenticationValue = Auth
});
newImageBag.Add(image);
}));
}
await Task.WhenAll(getImageDetailContainerTasks);
Logger.LogDebug($"Images cache loaded");
return(newImageBag);
}
