CI: generalize determine changed packages job

Generalize determine changed packages job for kernel and packages
workflow.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

Author: Ansuel

.github/workflows/kernel.yml

@@ -141,30 +141,9 @@ jobs:
   determine_changed_packages:
     name: Determine Changed Packages
     needs: determine_changed_files
-    runs-on: ubuntu-latest
-    outputs:
-      changed_packages: ${{ steps.get_packages.outputs.changed_packages }}
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          sparse-checkout: |
-            package
-
-      - name: Checkout shared workflows tools
-        uses: actions/checkout@v4
-        with:
-          repository: openwrt/actions-shared-workflows
-          path: shared-workflows
-          sparse-checkout: .github/scripts/get_changed_packages.pl
-
-      - name: Determine changed packages
-        id: get_packages
-        run: |
-          CHANGED_PACKAGES="$(./shared-workflows/.github/scripts/get_changed_packages.pl "${{ needs.determine_changed_files.outputs.all_changed_files }}")"
-
-          echo "changed_packages="$CHANGED_PACKAGES"" >> $GITHUB_OUTPUT
+    uses: ./.github/workflows/reusable_determine_changed_packages.yml
+    with:
+      all_changed_files: ${{ needs.determine_changed_files.outputs.all_changed_files }}
 
   build:
     name: Build Kernel with external toolchain

.github/workflows/packages.yml

@@ -16,30 +16,9 @@ jobs:
   determine_changed_packages:
     name: Determine Changed Packages
     needs: determine_changed_files
-    runs-on: ubuntu-latest
-    outputs:
-      changed_packages: ${{ steps.get_packages.outputs.changed_packages }}
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          sparse-checkout: |
-            package
-
-      - name: Checkout shared workflows tools
-        uses: actions/checkout@v4
-        with:
-          repository: openwrt/actions-shared-workflows
-          path: shared-workflows
-          sparse-checkout: .github/scripts/get_changed_packages.pl
-
-      - name: Determine changed packages
-        id: get_packages
-        run: |
-          CHANGED_PACKAGES="$(./shared-workflows/.github/scripts/get_changed_packages.pl "${{ needs.determine_changed_files.outputs.all_changed_files }}")"
-
-          echo "changed_packages="$CHANGED_PACKAGES"" >> $GITHUB_OUTPUT
+    uses: ./.github/workflows/reusable_determine_changed_packages.yml
+    with:
+      all_changed_files: ${{ needs.determine_changed_files.outputs.all_changed_files }}
 
   build:
     name: Build Packages with external toolchain

.github/workflows/reusable_determine_changed_packages.yml

@@ -0,0 +1,39 @@
+name: Determine Changed Files
+
+on:
+  workflow_call:
+    outputs:
+      changed_packages:
+        value: ${{ jobs.determine_changed_packages.outputs.changed_packages }}
+    inputs:
+      all_changed_files:
+        required: true
+        type: string
+
+jobs:
+  determine_changed_packages:
+    name: Determine Changed Packages
+    runs-on: ubuntu-latest
+    outputs:
+      changed_packages: ${{ steps.get_packages.outputs.changed_packages }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            package
+
+      - name: Checkout shared workflows tools
+        uses: actions/checkout@v4
+        with:
+          repository: openwrt/actions-shared-workflows
+          path: shared-workflows
+          sparse-checkout: .github/scripts/get_changed_packages.pl
+
+      - name: Determine changed packages
+        id: get_packages
+        run: |
+          CHANGED_PACKAGES="$(./shared-workflows/.github/scripts/get_changed_packages.pl "${{ inputs.all_changed_files }}")"
+
+          echo "changed_packages="$CHANGED_PACKAGES"" >> $GITHUB_OUTPUT