name: Release Android APK

on:
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      attach_to_release_tag:
        description: "Optional release tag to attach the APK to (leave empty to skip upload)"
        required: false
        default: ""

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 45
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: npm

      - uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: 17
          cache: gradle

      - uses: android-actions/setup-android@v3

      - name: Cache Android NDK / CMake
        uses: actions/cache@v4
        with:
          path: |
            ~/.android/build-cache
            /usr/local/lib/android/sdk/ndk
            /usr/local/lib/android/sdk/cmake
          key: android-sdk-${{ runner.os }}-${{ hashFiles('android/build.gradle', 'android/gradle.properties', 'android/app/build.gradle') }}
          restore-keys: android-sdk-${{ runner.os }}-

      - name: Compute native cache key input
        run: |
          node -e "
            const fs = require('fs');
            const lock = JSON.parse(fs.readFileSync('package-lock.json', 'utf8'));
            if (lock.packages && lock.packages['']) delete lock.packages[''].version;
            delete lock.version;
            fs.writeFileSync('.cxx-cache-input.json', JSON.stringify(lock.packages || {}));
          "

      - name: Cache native CMake build outputs
        uses: actions/cache@v4
        with:
          path: |
            android/app/.cxx
            android/app/build/intermediates/cxx
            android/app/build/intermediates/merged_native_libs
            android/app/build/intermediates/stripped_native_libs
          key: cxx-${{ runner.os }}-${{ hashFiles('.cxx-cache-input.json', 'android/build.gradle', 'android/app/build.gradle') }}
          restore-keys: cxx-${{ runner.os }}-

      - name: Install JS dependencies
        run: npm ci

      - name: Decode release keystore
        id: keystore
        env:
          KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
        run: |
          if [ -n "$KEYSTORE_BASE64" ]; then
            echo "$KEYSTORE_BASE64" | base64 -d > "$RUNNER_TEMP/release.keystore"
            echo "path=$RUNNER_TEMP/release.keystore" >> "$GITHUB_OUTPUT"
            echo "present=true" >> "$GITHUB_OUTPUT"
          else
            echo "present=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Build release APK
        working-directory: android
        env:
          ORG_GRADLE_PROJECT_BULWARK_RELEASE_STORE_FILE: ${{ steps.keystore.outputs.path }}
          ORG_GRADLE_PROJECT_BULWARK_RELEASE_STORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
          ORG_GRADLE_PROJECT_BULWARK_RELEASE_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
          ORG_GRADLE_PROJECT_BULWARK_RELEASE_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
        run: |
          chmod +x ./gradlew
          ./gradlew assembleRelease --no-daemon

      - name: Rename APK with version
        id: artifact
        run: |
          VERSION=$(cat VERSION | tr -d '[:space:]')
          SRC=android/app/build/outputs/apk/release/app-release.apk
          DEST="bulwark-mobile-${VERSION}-${GITHUB_SHA::7}.apk"
          cp "$SRC" "$DEST"
          echo "path=$DEST" >> "$GITHUB_OUTPUT"
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"

      - uses: actions/upload-artifact@v4
        with:
          name: ${{ steps.artifact.outputs.path }}
          path: ${{ steps.artifact.outputs.path }}
          if-no-files-found: error

      - name: Resolve target release tag
        id: target_tag
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          if [ "${{ github.event_name }}" = "release" ]; then
            TAG="${{ github.event.release.tag_name }}"
          elif [ -n "${{ github.event.inputs.attach_to_release_tag }}" ]; then
            TAG="${{ github.event.inputs.attach_to_release_tag }}"
          else
            TAG=$(gh release list --limit 1 --json tagName --jq '.[0].tagName' || true)
          fi
          echo "tag=$TAG" >> "$GITHUB_OUTPUT"
          if [ -n "$TAG" ]; then
            echo "Will attach APK to release: $TAG"
          else
            echo "No release tag resolved - APK is in workflow artifacts only."
          fi

      - name: Attach APK to release
        if: steps.target_tag.outputs.tag != ''
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.target_tag.outputs.tag }}
          files: ${{ steps.artifact.outputs.path }}