public async Task <IActionResult> Index(
int page = 1,
int pageSize = 10,
string mode = "",
string region = ""
)
{
// Create the view model with initial values we already know.
var vm = new LeaderboardViewModel
{
Page = page,
PageSize = pageSize,
SelectedMode = mode,
SelectedRegion = region,
GameModes = new List <string>()
{
"Solo",
"Duo",
"Trio"
},
GameRegions = new List <string>()
{
"Milky Way",
"Andromeda",
"Pinwheel",
"NGC 1300",
"Messier 82",
}
};
try
{
// Fetch the total number of results in the background.
var countItemsTask = _dbRespository.CountScoresAsync(mode, region);
// Fetch the scores that match the current filter.
IEnumerable <Score> scores = await _dbRespository.GetScoresAsync(mode, region, page, pageSize);
// Wait for the total count.
vm.TotalResults = await countItemsTask;
// Fetch the user profile for each score.
// This creates a list that's parallel with the scores collection.
var profiles = new List <Task <Profile> >();
foreach (var score in scores)
{
profiles.Add(_dbRespository.GetProfileAsync(score.ProfileId));
}
Task <Profile> .WaitAll(profiles.ToArray());
// Combine each score with its profile.
vm.Scores = scores.Zip(profiles, (score, profile) => new ScoreProfile {
Score = score, Profile = profile.Result
});
return(View(vm));
}
catch (Exception ex)
{
return(View(vm));
}
}