Merge pull request #300 from neuroglia-io/fix-graph-state-transition

Updating state references (transition/compensation) when its name has been change in the editor

Author: cdavernas

src/dashboard/Synapse.Dashboard/Features/Workflows/WorkflowEditor/StateEditor.razor

@@ -35,7 +35,7 @@
                                     <td>Name</td>
                                     <td>
                                         <input name="name" type="text" placeholder="Name" required class="form-control" value="@state.Name"
-                                               @onchange="async e => await OnPropertyChangedAsync(nameof(state.Name), s => s.Name = (string)e.Value!)" />
+                                               @onchange="async e => await OnPropertyChangedAsync(nameof(state.Name), this.PatchStateName(e))" />
                                     </td>
                                 </tr>
                                 <tr>
@@ -190,6 +190,28 @@
         }
     }
 
+    protected virtual Action<StateDefinition> PatchStateName(ChangeEventArgs e) {
+        return (StateDefinition state) => {
+            var previousName = state.Name;
+            state.Name = (string)e.Value!;
+            if (this.Workflow.StartStateName == previousName) {
+                this.Workflow.StartStateName = state.Name;
+            }
+            this.Workflow.States.ForEach(s =>
+            {
+                if (!state.UsedForCompensation) {
+                    if (s.TransitionToStateName == previousName) {
+                        s.TransitionToStateName = state.Name;
+                    }
+                }
+                else if (s.CompensatedBy == previousName) {
+                    s.CompensatedBy = state.Name;
+                }
+                // todo: update conditions when errors/timeout are implemented
+            });
+        };
+    }
+
     protected virtual async Task OnStateTypeChangedAsync(StateType stateType)
     {
         var stateIndex = this.Workflow.States.IndexOf(this.state);