add event dispatcher to bypass gh limitations

Author: Hau-Hau

.github/actions/has-changes/action.yml

@@ -80,9 +80,9 @@ runs:
 
         $SelectedProject = "${{ inputs.project }}"
 
-        $currentHash = git rev-parse origin/main
+        $currentHash = git rev-parse HEAD
         if (-not $currentHash) {
-          Write-Host "Cannot fetch hash of origin/main"
+          Write-Host "Cannot fetch hash of HEAD"
           exit 1
         }
 

.github/workflows/service__event_dispatcher__pull_request__closed__main.yml

@@ -0,0 +1,12 @@
+name: "service::event_dispatcher::pull_request::closed::main"
+on:
+  pull_request:
+    types: [closed]
+    branches: [main]
+
+jobs:
+  mark:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Emit metadata
+        run: echo "Running for PR ${{ github.event.number }} state=${{ github.event.action }}"

.github/workflows/update-nuspec.yml

@@ -1,18 +1,10 @@
 name: Update nuspec files
 
 on:
-  workflow_dispatch:
-    inputs:
-      force:
-        required: true
-        type: boolean
-        default: false
-        description: "Force recreation of nuspec files"
-  pull_request:
-    types: 
-      - closed
-    branches:
-      - main
+  workflow_run:
+    workflows: ["service::event_dispatcher::pull_request::closed::main"]
+    types:
+      - completed
 
 concurrency:
   group: update-nuspec
@@ -21,6 +13,11 @@ concurrency:
 jobs:
   validate:
     runs-on: ubuntu-latest
+    if: >
+      github.event.workflow_run.event == 'pull_request' &&
+      github.event.workflow_run.conclusion == 'success' &&
+      fromJson(github.event.workflow_run.payload).pull_request.state == 'closed' &&
+      fromJson(github.event.workflow_run.payload).pull_request.base.ref == 'main'
     env:
       PULL_REQUEST_MERGED: ${{ github.event.pull_request.merged }}
     outputs: