async Task <List <NewsCategory> > GetUsersNewsCategories()
{
try
{
var loggedIn = authService.IsLoggedIn();
if (!loggedIn)
{
return(new List <NewsCategory>());
}
var dbResult = await Data.ListAsync <UserInterests>(
DefaultPartitions.UserDocuments
);
var allNewsCats = new AllNewsCategories();
var userInterests = new List <UserInterests>();
userInterests.AddRange(dbResult.CurrentPage.Items.Select(i => i.DeserializedValue));
while (dbResult.HasNextPage)
{
await dbResult.GetNextPageAsync();
userInterests.AddRange(dbResult.CurrentPage.Items.Select(i => i.DeserializedValue));
}
foreach (var interest in userInterests)
{
var favoriteCategory = allNewsCats.First(c => c.CategoryName == interest.NewsCategoryName);
favoriteCategory.IsFavorite = true;
// add the tabs
var interestInfo = new InterestSubMessage
{
Category = favoriteCategory.CategoryName,
Title = favoriteCategory.DisplayName
};
var msg = new AddInterestTabMessage {
InterestInfo = interestInfo
};
MessagingCenter.Send(msg, AddInterestTabMessage.AddTabMessage);
}
return(allNewsCats);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex);
return(new List <NewsCategory>());
}
}
void AddNewsTab(AddInterestTabMessage msg)
{
MainThread.BeginInvokeOnMainThread(() => {
newsTab.Items.Add(new ShellContent
{
Content = new NewsCollectionPage {
CategoryName = msg.InterestInfo.Category
},
Title = msg.InterestInfo.Title
});
});
}
async Task GetInitialTabLayout()
{
var dataService = DependencyService.Get <IDataService>();
var displayNewsCategories = (await dataService.GetInterestCategories());
var addMessage = new AddInterestTabMessage {
InterestNames = new List <InterestSubMessage>()
};
foreach (var item in displayNewsCategories)
{
addMessage.InterestNames.Add(new InterestSubMessage {
Title = item.DisplayName, Category = item.CategoryName
});
}
MessagingCenter.Send(addMessage, AddInterestTabMessage.AddTabMessage);
}
async Task CreateFavorite(NewsCategory newsCategory)
{
await Data.CreateAsync <UserInterest>(newsCategory.CategoryName,
new UserInterest { NewsCategoryName = newsCategory.CategoryName },
DefaultPartitions.UserDocuments);
// Tell the App Shell to add a new interest tab
var interestInfo = new InterestSubMessage
{
Category = newsCategory.CategoryName,
Title = newsCategory.DisplayName
};
var msg = new AddInterestTabMessage {
InterestInfo = interestInfo
};
MessagingCenter.Send(msg, AddInterestTabMessage.AddTabMessage);
}
