Help user to debug the diff error with temporary applications (#26)

* Keep the application if there is a diff error

* Update the template

Author: yzdann

internal/pkg/argocd/argocd.go

@@ -521,7 +521,9 @@ func generateDiffOfAComponent(ctx context.Context, commentDiff bool, componentPa
 	log.Debugf("Generating diff for component %s", componentPath)
 	componentDiffResult.HasDiff, componentDiffResult.DiffElements, componentDiffResult.DiffError = generateArgocdAppDiff(ctx, commentDiff, app, detailedProject.Project, resources, argoSettings, diffOption)
 
-	if componentDiffResult.AppWasTemporarilyCreated {
+	// only delete the temprorary app object if it was created and there was no error on diff
+	// otherwise let's keep it for investigation
+	if componentDiffResult.AppWasTemporarilyCreated && componentDiffResult.DiffError == nil {
 		// Delete the temporary app object
 		_, err = ac.app.Delete(ctx, &application.ApplicationDeleteRequest{Name: &app.Name, AppNamespace: &app.Namespace})
 		if err != nil {

templates/argoCD-diff-pr-comment.gotmpl

@@ -4,8 +4,12 @@ Diff of ArgoCD applications:
 
 
 {{if $appDiffResult.DiffError }}
-⚠️ ⚠️ **Error getting diff from ArgoCD** (`{{ $appDiffResult.ComponentPath }}`) ⚠️ ⚠️ 
-``` 
+⚠️ ⚠️ **Error getting diff from ArgoCD** (`{{ $appDiffResult.ComponentPath }}`) ⚠️ ⚠️
+Please check the App Conditions of <img src="https://argo-cd.readthedocs.io/en/stable/assets/favicon.png" width="20"/> **[{{ $appDiffResult.ArgoCdAppName }}]({{ $appDiffResult.ArgoCdAppURL }})** for more details.
+{{- if $appDiffResult.AppWasTemporarilyCreated }}
+⚠️ For investigation we kept the temporary application, please make sure to clean it up later! ⚠️
+{{- end}}
+```
 {{ $appDiffResult.DiffError }}
 
 ```