ci: add CI for snap package build/publish/promote

Author: jnsgruk

.github/workflows/build-package.yml

@@ -301,6 +301,37 @@ jobs:
         path: |
           dist/icloud*
   
+  build_linux_snap:
+    name: Build snap
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-24.04
+          - os: ubuntu-24.04-arm
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Check out the code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup LXD
+        uses: canonical/setup-lxd@v0.1.3
+
+      - name: Setup Snapcraft
+        run: sudo snap install --classic snapcraft
+
+      - name: Build snap
+        run: snapcraft --verbose
+      
+      - name: Upload artifacts 
+        uses: actions/upload-artifact@v4 
+        with: 
+          name: icloudpd-snap
+          if-no-files-found: error 
+          path: | 
+            *.snap
+  
   clone_src_whl:
     runs-on: ubuntu-22.04
     needs:

.github/workflows/promote-snap-candidate-to-stable.yaml

@@ -0,0 +1,15 @@
+name: Promote Snap (candidate -> stable)
+
+on:
+  workflow_dispatch:
+
+jobs:
+  promote:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Promote snap to stable
+        env:
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.STORE_TOKEN }}
+        run: |
+          sudo snap install --classic snapcraft
+          snapcraft promote icloudpd --from-channel latest/candidate --to-channel latest/stable --yes

.github/workflows/publish.yml

@@ -121,7 +121,27 @@ jobs:
           TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
         run: |
           python3 -m twine upload --non-interactive --disable-progress-bar dist/*.whl
+  
+  snap:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
 
+      - name: Download artifacts (snap)
+        uses: actions/download-artifact@v4
+        with:
+          name: icloudpd-snap
+
+      - name: Setup Snapcraft
+        run: sudo snap install --classic snapcraft
+
+      - name: Release snap
+        env:
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.STORE_TOKEN }}
+        run: |
+          snapcraft upload icloudpd_*.snap --release latest/candidate
+   
   gh_release:
     runs-on: ubuntu-22.04
     steps: