private async Task <PlaylistSummaryViewModel> GetPlaylistDetailsViewModel(string id, bool doAsync = true)
{
ServicePointManager.DefaultConnectionLimit = 5;
var access_token = Session["AccessToken"].ToString();
var url = String.Format("https://api.spotify.com/v1/users/{0}/playlists?limit=50", id);
string json;
using (mp.Step("Get Users Playlists first 50")) {
json = sh.CallSpotifyAPIPassingToken(access_token, url);
}
var vm = JsonConvert.DeserializeObject <PlaylistSummaryViewModel>(json);
var recordsPerPage = 50;
if (vm.total > recordsPerPage)
{
var totalRecords = vm.total;
int numberOfTimesToLoop = (totalRecords + recordsPerPage - 1) / recordsPerPage;
// we've already done the first query to get the total, do skip that
numberOfTimesToLoop -= 1;
if (doAsync)
{
using (mp.Step("Async " + numberOfTimesToLoop + " queries"))
using (mp.CustomTiming("http", "overall")) {
var tasks = new Task <string> [numberOfTimesToLoop];
int offset = 0;
for (int i = 0; i < numberOfTimesToLoop; i++)
{
// start offset at 50
offset += recordsPerPage;
url = String.Format("https://api.spotify.com/v1/users/{0}/playlists?limit={2}&offset={1}", id,
offset, recordsPerPage);
tasks[i] = sh.CallSpotifyAPIPassingTokenAsync(access_token, url);
}
// at this point all tasks will be running at the same time
await Task.WhenAll(tasks);
}
for (int i = 0; i < numberOfTimesToLoop - 1; i++)
{
var vm2 = JsonConvert.DeserializeObject <PlaylistSummaryViewModel>(json);
// merge with vm
vm.items = vm.items.Union(vm2.items).ToList();
}
}
else
{
for (int i = 1; i < numberOfTimesToLoop; i++)
{
int offset = i * recordsPerPage;
url = String.Format("https://api.spotify.com/v1/users/{0}/playlists?limit={2}&offset={1}", id, offset, recordsPerPage);
using (mp.Step("Get Users Playlists - " + i)) {
json = sh.CallSpotifyAPIPassingToken(access_token, url);
}
var vm2 = JsonConvert.DeserializeObject <PlaylistSummaryViewModel>(json);
// merge with vm
vm.items = vm.items.Union(vm2.items).ToList();
}
}
}
vm.access_token = access_token;
return(vm);
}
