CI: Build Flatpak

.github/workflows/rolling-release.yml

@@ -249,6 +249,49 @@ jobs:
         path: "DuckStation-x64.AppImage"
 
 
+  linux-flatpak-build:
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Install packages
+      shell: bash
+      run: scripts/flatpak/install-packages.sh
+
+    - name: Generate AppStream XML
+      run: |
+        scripts/flatpak/generate-metainfo.sh scripts/flatpak/org.duckstation.duckstation.metainfo.xml
+        cat scripts/flatpak/org.duckstation.duckstation.metainfo.xml
+        flatpak run org.freedesktop.appstream-glib validate scripts/flatpak/org.duckstation.duckstation.metainfo.xml
+
+    - name: Build Flatpak
+      uses: flatpak/flatpak-github-actions/flatpak-builder@v6.1
+      with:
+        bundle: duckstation-x64.flatpak
+        manifest-path: scripts/flatpak/org.duckstation.duckstation.json
+        arch: x86_64
+        build-bundle: true
+        verbose: true
+        #mirror-screenshots-url: https://dl.flathub.org/repo/screenshots
+        #branch: ${{ inputs.branch }}
+        branch: master
+        cache: true
+        restore-cache: true
+        cache-key: flatpak-x64-${{ hashFiles('.scripts/flatpak/**/*.json') }}
+
+#    - name: Commit screenshots to OSTree
+#      run: |
+#        ostree commit --repo=repo --canonical-permissions --branch=screenshots/x86_64 flatpak_app/screenshots
+
+    - name: Upload Flatpak
+      uses: actions/upload-artifact@v1
+      with:
+        name: "linux-flatpak"
+        path: "duckstation-x64.flatpak"
+
+
   macos-build:
     runs-on: macos-11
     steps:
@@ -288,7 +331,7 @@ jobs:
 
 
   create-release:
-    needs: [windows-build, windows-arm64-build, linux-build, macos-build]
+    needs: [windows-build, windows-arm64-build, linux-build, linux-flatpak-build, macos-build]
     runs-on: "ubuntu-20.04"
     if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/dev'
     steps:
@@ -307,6 +350,11 @@ jobs:
         with:
           name: "linux-x64-appimage-qt"
 
+      - name: Download Flatpak Artifact
+        uses: actions/download-artifact@v1
+        with:
+          name: "linux-flatpak"
+
       - name: Download MacOS Artifact
         uses: actions/download-artifact@v1
         with:
@@ -326,6 +374,7 @@ jobs:
             windows-arm64/duckstation-windows-arm64-release.zip
             windows-arm64/duckstation-windows-arm64-release-symbols.zip
             linux-x64-appimage-qt/DuckStation-x64.AppImage
+            linux-flatpak/duckstation-x64.flatpak
             macos/duckstation-mac-release.zip
 
       - name: Create dev release
@@ -342,5 +391,6 @@ jobs:
             windows-arm64/duckstation-windows-arm64-release.zip
             windows-arm64/duckstation-windows-arm64-release-symbols.zip
             linux-x64-appimage-qt/DuckStation-x64.AppImage
+            linux-flatpak/duckstation-x64.flatpak
             macos/duckstation-mac-release.zip