public async Task <ActionResult <StoryTableResult> > GetStories(string pageIndex, string pageSize)
{
int _pageIndex = !String.IsNullOrEmpty(pageIndex) ? int.Parse(pageIndex) : 0;
int _pageSize = !String.IsNullOrEmpty(pageSize) ? int.Parse(pageSize) : 0;
List <Story> stories = _serviceCachedData.cachedShowingData.Select(i => i.Value).ToList <Story>();
int fromIndex = (_pageIndex * _pageSize);
int count = _pageSize > stories.Count ? stories.Count : _pageSize;
StoryTableResult result = new StoryTableResult(stories.GetRange(fromIndex, count),
_pageIndex,
_pageSize,
_serviceCachedData.cachedShowingData.Count);
return(result);
}
public async Task <ActionResult <StoryTableResult> > GetFilteredStories([FromQuery] string filter)
{
int _pageIndex = 0;
int _pageSize = 10;
List <Story> stories = new List <Story>();
List <int> storiesIds = !String.IsNullOrEmpty(filter) ?
new List <int>(_serviceCachedData.cachedData.Keys) :
await _storyRepository.GetNewStoriesAsync();
if (!String.IsNullOrEmpty(filter))
{
_serviceCachedData.cachedShowingData = new Dictionary <int, Story>(_serviceCachedData.cachedData.Where(x => !String.IsNullOrEmpty(x.Value.url) &&
x.Value.title.ToLower().Contains(filter)).Select(i => i));
stories = _serviceCachedData.cachedShowingData.Select(i => i.Value).ToList <Story>();
}
else
{
var semaphore = new SemaphoreSlim(20);
var searchedStories = new ConcurrentDictionary <int, Story>();
var taskRequests = storiesIds.Select(async item =>
{
try
{
await semaphore.WaitAsync();
var story = await _storyRepository.GetByIdAsync(item);
if (story != null)
{
if (!String.IsNullOrEmpty(filter))
{
if (!String.IsNullOrEmpty(story.url) &&
story.title.ToLower().Contains(filter))
{
searchedStories.TryAdd(story.id, story);
}
}
else
{
searchedStories.TryAdd(story.id, story);
}
}
}
finally
{
semaphore.Release();
}
});
await Task.WhenAll(taskRequests);
stories = searchedStories.OrderByDescending(i => i.Key).Select(i => i.Value).ToList <Story>();
_serviceCachedData.cachedData = searchedStories.OrderByDescending(i => i.Key).ToDictionary(x => x.Key, x => x.Value);
_serviceCachedData.cachedShowingData = _serviceCachedData.cachedData;
}
int fromIndex = (_pageIndex * _pageSize);
int count = _pageSize > stories.Count ? stories.Count : _pageSize;
StoryTableResult result = new StoryTableResult(stories.GetRange(fromIndex, count),
_pageIndex,
_pageSize,
!String.IsNullOrEmpty(filter) ? stories.Count : _serviceCachedData.cachedData.Count);
return(result);
}