Improved Pandoc installation checking (#571)

app/MindWork AI Studio/Components/ReadFileContent.razor.cs

@@ -1,8 +1,11 @@
+using AIStudio.Dialogs;
 using AIStudio.Tools.Rust;
 using AIStudio.Tools.Services;
 
 using Microsoft.AspNetCore.Components;
 
+using DialogOptions = AIStudio.Dialogs.DialogOptions;
+
 namespace AIStudio.Components;
 
 public partial class ReadFileContent : MSGComponentBase
@@ -16,6 +19,12 @@ public partial class ReadFileContent : MSGComponentBase
     [Inject]
     private RustService RustService { get; init; } = null!;
     
+    [Inject]
+    private IDialogService DialogService { get; init; } = null!;
+    
+    [Inject]
+    private ILogger<ReadFileContent> Logger { get; init; } = null!;
+    
     private async Task SelectFile()
     {
         var selectedFile = await this.RustService.SelectFile(T("Select file to read its content"));
@@ -38,6 +47,26 @@ public partial class ReadFileContent : MSGComponentBase
             return;
         }
         
+        // Ensure that Pandoc is installed and ready:
+        var pandocState = await Pandoc.CheckAvailabilityAsync(this.RustService, showSuccessMessage: false);
+        if (!pandocState.IsAvailable)
+        {
+            var dialogParameters = new DialogParameters<PandocDialog>
+            {
+                { x => x.ShowInitialResultInSnackbar, false },
+            };
+                
+            var dialogReference = await this.DialogService.ShowAsync<PandocDialog>(T("Pandoc Installation"), dialogParameters, DialogOptions.FULLSCREEN);
+            await dialogReference.Result;
+                
+            pandocState = await Pandoc.CheckAvailabilityAsync(this.RustService, showSuccessMessage: true);
+            if (!pandocState.IsAvailable)
+            {
+                this.Logger.LogError("Pandoc is not available after installation attempt.");
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Cancel, T("Pandoc may be required for importing files.")));
+            }
+        }
+        
         var fileContent = await this.RustService.ReadArbitraryFileData(selectedFile.SelectedFilePath, int.MaxValue);
         await this.FileContentChanged.InvokeAsync(fileContent);
     }