Small fixes to support opening terminal in flatpak

src/Native/Linux.cs

@@ -35,7 +35,14 @@ public string FindTerminal(Models.ShellOrTerminal shell)
                     return test;
             }
 
-            return string.Empty;
+            if (IsFlatpak())
+            {
+                return shell.Exec;
+            }
+            else
+            {
+                return string.Empty;
+            }
         }
 
         public List<Models.ExternalTool> FindExternalTools()
@@ -71,16 +78,33 @@ public void OpenInFileManager(string path, bool select)
 
         public void OpenTerminal(string workdir)
         {
-            if (string.IsNullOrEmpty(OS.ShellOrTerminal) || !File.Exists(OS.ShellOrTerminal))
+            if (string.IsNullOrEmpty(OS.ShellOrTerminal))
             {
-                App.RaiseException(workdir, $"Can not found terminal! Please confirm that the correct shell/terminal has been configured.");
+                App.RaiseException(workdir, $"Terminal is not specified! Please confirm that the correct shell/terminal has been configured.");
                 return;
             }
 
             var startInfo = new ProcessStartInfo();
-            startInfo.WorkingDirectory = string.IsNullOrEmpty(workdir) ? "~" : workdir;
-            startInfo.FileName = OS.ShellOrTerminal;
-            Process.Start(startInfo);
+            var home = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+            startInfo.WorkingDirectory = string.IsNullOrEmpty(workdir) ? home : workdir;
+            if (IsFlatpak())
+            {
+                startInfo.FileName = "flatpak-spawn";
+                startInfo.ArgumentList.Add("--host");
+                startInfo.ArgumentList.Add(OS.ShellOrTerminal);
+            }
+            else
+            {
+                startInfo.FileName = OS.ShellOrTerminal;
+            }
+            try
+            {
+                Process.Start(startInfo);
+            }
+            catch (Exception e)
+            {
+                App.RaiseException(workdir, e.Message);
+            }
         }
 
         public void OpenWithDefaultEditor(string file)
@@ -116,5 +140,11 @@ private string FindJetBrainsFleet()
             var path = $"{Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)}/JetBrains/Toolbox/apps/fleet/bin/Fleet";
             return File.Exists(path) ? path : FindExecutable("fleet");
         }
+
+        private static bool IsFlatpak()
+        {
+            var container = Environment.GetEnvironmentVariable("container");
+            return container == "flatpak";
+        }
     }
 }

src/Native/OS.cs

@@ -95,7 +95,7 @@ public static void OpenBrowser(string url)
         public static void OpenTerminal(string workdir)
         {
             if (string.IsNullOrEmpty(ShellOrTerminal))
-                App.RaiseException(workdir, $"Can not found terminal! Please confirm that the correct shell/terminal has been configured.");
+                App.RaiseException(workdir, $"Terminal is not specified! Please confirm that the correct shell/terminal has been configured.");
             else
                 _backend.OpenTerminal(workdir);
         }

src/Native/Windows.cs

@@ -160,7 +160,7 @@ public void OpenTerminal(string workdir)
         {
             if (string.IsNullOrEmpty(OS.ShellOrTerminal) || !File.Exists(OS.ShellOrTerminal))
             {
-                App.RaiseException(workdir, $"Can not found terminal! Please confirm that the correct shell/terminal has been configured.");
+                App.RaiseException(workdir, $"Terminal is not specified! Please confirm that the correct shell/terminal has been configured.");
                 return;
             }