Allow log level selection

Flow.Launcher.Infrastructure/Logger/Log.cs

@@ -48,17 +48,31 @@ static Log()
             configuration.AddTarget("file", fileTargetASyncWrapper);
             configuration.AddTarget("debug", debugTarget);
 
+            var fileRule = new LoggingRule("*", LogLevel.Debug, fileTargetASyncWrapper)
+            {
+                RuleName = "file"
+            };
 #if DEBUG
-            var fileRule = new LoggingRule("*", LogLevel.Debug, fileTargetASyncWrapper);
-            var debugRule = new LoggingRule("*", LogLevel.Debug, debugTarget);
+            var debugRule = new LoggingRule("*", LogLevel.Debug, debugTarget)
+            {
+                RuleName = "debug"
+            };
             configuration.LoggingRules.Add(debugRule);
-#else
-            var fileRule = new LoggingRule("*", LogLevel.Info, fileTargetASyncWrapper);
 #endif
             configuration.LoggingRules.Add(fileRule);
             LogManager.Configuration = configuration;
         }
 
+        public static void UseDebugLogLevel()
+        {
+            LogManager.Configuration.FindRuleByName("file").SetLoggingLevels(LogLevel.Debug, LogLevel.Fatal);
+        }
+
+        public static void UseInfoLogLevel()
+        {
+            LogManager.Configuration.FindRuleByName("file").SetLoggingLevels(LogLevel.Info, LogLevel.Fatal);
+        }
+
         private static void LogFaultyFormat(string message)
         {
             var logger = LogManager.GetLogger("FaultyLogger");

Flow.Launcher.Infrastructure/UserSettings/Settings.cs

@@ -180,6 +180,7 @@ public CustomBrowserViewModel CustomBrowser
             }
         };
 
+        public string LogLevel = "info";
 
         /// <summary>
         /// when false Alphabet static service will always return empty results

Flow.Launcher/App.xaml.cs

@@ -64,6 +64,20 @@ await Stopwatch.NormalAsync("|App.OnStartup|Startup cost", async () =>
                 _settings = _settingsVM.Settings;
                 _settings.WMPInstalled =  WindowsMediaPlayerHelper.IsWindowsMediaPlayerInstalled();
 
+                switch (_settings.LogLevel)
+                {
+                    case "debug":
+                        Log.UseDebugLogLevel();
+                        break;
+                    case "info":
+                        Log.UseInfoLogLevel();
+                        break;
+                    default:
+                        Log.Error(nameof(Flow.Launcher.App), "Unrecognized log level");
+                        Log.UseDebugLogLevel();
+                        break;
+                }
+
                 AbstractPluginEnvironment.PreStartPluginExecutablePathUpdate(_settings);
 
                 _alphabet.Initialize(_settings);