release.yml

name: Release

# Builds a signed release APK and attaches it to a GitHub Release whenever a version
# tag (e.g. v0.1.0) is pushed. Obtainium watches this repo's Releases and picks up the APK.
on:
  push:
    tags:
      - 'v*'

permissions:
  contents: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          # Full history so the versionCode (git commit count) is correct — a shallow
          # clone would report a commit count of 1 for every release.
          fetch-depth: 0

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: '17'

      - name: Set up Android SDK
        uses: android-actions/setup-android@v3

      - name: Decode release keystore
        env:
          KEYSTORE_BASE64: ${{ secrets.KEYSTORE_BASE64 }}
        run: echo "$KEYSTORE_BASE64" | base64 --decode > "$RUNNER_TEMP/release.jks"

      - name: Derive version from tag
        id: version
        run: |
          # The pushed tag (e.g. v0.2.0) is the source of truth. versionName is the tag without its
          # leading "v" so the APK's embedded version equals the release tag — this is what stops
          # Obtainium from showing a permanent phantom update. versionCode is the commit count:
          # strictly increasing, so Android always accepts the update as newer.
          echo "name=${GITHUB_REF_NAME#v}" >> "$GITHUB_OUTPUT"
          echo "code=$(git rev-list --count HEAD)" >> "$GITHUB_OUTPUT"

      - name: Build signed release APK
        env:
          KEYSTORE_FILE: ${{ runner.temp }}/release.jks
          KEYSTORE_PASSWORD: ${{ secrets.KEYSTORE_PASSWORD }}
          KEY_ALIAS: ${{ secrets.KEY_ALIAS }}
          KEY_PASSWORD: ${{ secrets.KEY_PASSWORD }}
        run: >-
          ./gradlew :app:assembleRelease
          -PappVersionName=${{ steps.version.outputs.name }}
          -PappVersionCode=${{ steps.version.outputs.code }}

      - name: Stage APK
        run: |
          mkdir -p dist
          cp app/build/outputs/apk/release/app-release.apk "dist/light-keyboard-${GITHUB_REF_NAME}.apk"

      - name: Publish release
        uses: softprops/action-gh-release@v2
        with:
          files: dist/light-keyboard-*.apk
          generate_release_notes: true