Publish rustdesk version file on tag

[skip ci]

Signed-off-by: Vasyl Gello <vasek.gello@gmail.com>

.github/workflows/flutter-tag.yml

@@ -15,4 +15,24 @@ jobs:
     secrets: inherit
     with:
       upload-artifact: true
-      upload-tag: "1.2.4"
+      upload-tag: ${{ env.GITHUB_REF_NAME }}
+
+  update-fdroid-version-file:
+    name: Publish Rustdesk version file for F-Droid updater
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate Rustdesk version file
+        run: |
+          UPSTREAM_VERNAME="$GITHUB_REF_NAME"
+          UPSTREAM_VERCODE="$(echo "$UPSTREAM_VERNAME" | tr -d '.')"
+          echo "versionName=$UPSTREAM_VERNAME"  > rustdesk-version.txt
+          echo "versionCode=$UPSTREAM_VERCODE" >> rustdesk-version.txt
+        shell: bash
+
+      - name: Publish Rustdesk version file
+        uses: softprops/action-gh-release@v1
+        with:
+          prerelease: true
+          tag_name: "fdroid-version"
+          files: |
+            ./rustdesk-version.txt