private static async Task SendRequestAsync <T>(T task, HttpMethod requestType)
{
//configuring message
var endpoint = requestType == HttpMethod.Put ? "change" : "add";
var json = JsonManager.MakeJson(task);
var req_message = new HttpRequestMessage(requestType, new Uri(http, endpoint))
{
Content = new StringContent(json, Encoding.UTF8, "application/json")
};
//sending request
try
{
using (var client = new HttpClient {
Timeout = WaitingTime
})
SynchChanged?.Invoke(ClassifyResponse(await client.SendAsync(req_message)));
}
catch (Exception ex)
{
IsSyncSuccessful = false;
if (ex is HttpRequestException)
{
SynchChanged?.Invoke(SyncState.Impossible);
}
if (ex is TaskCanceledException)
{
SynchChanged?.Invoke(SyncState.Failed);
}
}
}
public static async Task DeleteItemAsync(TaskModel task)
{
try
{
using (var client = new HttpClient {
Timeout = WaitingTime
})
{
var result = await client.DeleteAsync(new Uri(http, $"remove/{task.Id}"));
SynchChanged?.Invoke(ClassifyResponse(result));
}
}
catch (Exception ex)
{
IsSyncSuccessful = false;
if (ex is HttpRequestException)
{
SynchChanged?.Invoke(SyncState.Impossible);
}
if (ex is TaskCanceledException)
{
SynchChanged?.Invoke(SyncState.Failed);
}
}
}
public static async Task <HashSet <TaskModel> > GetTasksAsync()
{
try
{
using (var client = new HttpClient {
Timeout = WaitingTime
})
{
var res = await client.GetAsync(new Uri(http, "list"));
var json = await res.Content.ReadAsStringAsync();
var res_type = ClassifyResponse(res);
SynchChanged?.Invoke(res_type);
if (res_type == SyncState.Complete)
{
return(JsonManager.FromJson <HashSet <TaskModel> >(json));
}
else
{
return(new HashSet <TaskModel>());
}
}
}
catch (Exception ex)
{
IsSyncSuccessful = false;
if (ex is HttpRequestException)
{
SynchChanged?.Invoke(SyncState.Impossible);
}
if (ex is TaskCanceledException)
{
SynchChanged?.Invoke(SyncState.Failed);
}
return(new HashSet <TaskModel>());
}
}
/// <summary>
/// Called from sync code if task is executed at once.
/// </summary>
public static void LoadingStartedInvoke()
{
SynchChanged?.Invoke(SyncState.Started);
}