Feat/usage stats collection (#317)

* feat: implement anonymous usage data collection

Co-authored-by: Joseph Milazzo <joseph.v.milazzo@gmail.com>

API/Services/HostedServices/StartupTasksHostedService.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using API.Interfaces;
+using API.Interfaces.Services;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace API.Services.HostedServices
+{
+    public class StartupTasksHostedService : IHostedService
+    {
+        private readonly IServiceProvider _provider;
+
+        public StartupTasksHostedService(IServiceProvider serviceProvider)
+        {
+            _provider = serviceProvider;
+        }
+
+        public async Task StartAsync(CancellationToken cancellationToken)
+        {
+            using var scope = _provider.CreateScope();
+
+            var taskScheduler = scope.ServiceProvider.GetRequiredService<ITaskScheduler>();
+            taskScheduler.ScheduleTasks();
+
+            try
+            {
+                await ManageStartupStatsTasks(scope, taskScheduler);
+            }
+            catch (Exception e)
+            {
+                //If stats startup fail the user can keep using the app
+            }
+        }
+
+        private async Task ManageStartupStatsTasks(IServiceScope serviceScope, ITaskScheduler taskScheduler)
+        {
+            var settingsRepository = serviceScope.ServiceProvider.GetRequiredService<ISettingsRepository>();
+
+            var settingsDto = await settingsRepository.GetSettingsDtoAsync();
+
+            if (!settingsDto.AllowStatCollection) return;
+
+            taskScheduler.ScheduleStatsTasks();
+
+            var statsService = serviceScope.ServiceProvider.GetRequiredService<IStatsService>();
+
+            await statsService.CollectAndSendStatsData();
+        }
+
+        public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+    }
+}