android-build.yml

name: Android App CI

permissions:
  contents: read

on:
  push:
    branches: [ master ]

jobs:
  changes:
    uses: ./.github/workflows/app-change-detection.yml

  build-android:
    environment: android-signing
    needs: changes
    if: ${{ always() && !cancelled() && (needs.changes.result != 'success' || needs.changes.outputs.frontend != 'false' || needs.changes.outputs.android != 'false') }}
    runs-on: blacksmith-8vcpu-ubuntu-2404
    timeout-minutes: 90
    permissions:
      contents: read
      id-token: write
      attestations: write
      artifact-metadata: write
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # was v4
        with:
          persist-credentials: false

      - name: Install Nix
        uses: DeterminateSystems/determinate-nix-action@96c5ee93a9dddf2830d31e1da6ec719077336c28 # v3.23.3
        with:
          source-tag: v3.23.3
          github-token: ""

      - name: Verify pinned Nix runtime
        run: bash scripts/ci/verify-nix-runtime.sh

      - name: Cache Bun dependencies
        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # was v4
        with:
          path: |
            ~/.bun/install/cache
          key: ${{ runner.os }}-bun-${{ hashFiles('apps/maple-research/frontend/bun.lock', 'sdk/bun.lock') }}

      - name: Cache Gradle
        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # was v4
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('apps/maple-research/frontend/src-tauri/gen/android/**/*.gradle*', 'apps/maple-research/frontend/src-tauri/gen/android/gradle/wrapper/gradle-wrapper.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      - name: Cache sccache
        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # was v4
        with:
          path: ~/.cache/sccache
          key: ${{ runner.os }}-sccache-android-release-${{ hashFiles('apps/maple-research/frontend/src-tauri/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-sccache-android-release-
            ${{ runner.os }}-sccache-android-
            ${{ runner.os }}-sccache-

      - name: Build Tauri Android App (signed)
        run: nix develop --no-update-lock-file .#android -c ./scripts/ci/android-release.sh
        env:
          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
          ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}

      - name: Show sccache stats
        if: always()
        run: nix develop --no-update-lock-file .#android -c ./scripts/ci/sccache-stats.sh

      - name: Collect Android release checksums
        run: |
          nix develop --no-update-lock-file .#android -c ./scripts/ci/attestation-manifest.sh \
            android-release-artifacts.sha256 \
            apps/maple-research/frontend/src-tauri/target/reproducibility/android-release-final.sha256 \
            apps/maple-research/frontend/src-tauri/target/reproducibility/android-release-*.sha256
          cat android-release-artifacts.sha256

      - name: Attest Android release artifacts
        # Keep uploads/verifiers running if GitHub token policy rejects artifact attestation.
        continue-on-error: true
        uses: actions/attest@281a49d4cbb0a72c9575a50d18f6deb515a11deb # was v4
        with:
          subject-checksums: android-release-artifacts.sha256

      - name: Upload Android APK
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # was v4
        with:
          name: maple-android-apk
          path: |
            apps/maple-research/frontend/src-tauri/gen/android/app/build/outputs/apk/universal/release/app-universal-release.apk
            apps/maple-research/frontend/src-tauri/target/reproducibility/*.sha256
          retention-days: 5

      - name: Upload Android AAB
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # was v4
        with:
          name: maple-android-aab
          path: |
            apps/maple-research/frontend/src-tauri/gen/android/app/build/outputs/bundle/universalRelease/app-universal-release.aab
            apps/maple-research/frontend/src-tauri/target/reproducibility/*.sha256
          retention-days: 5

  verify-android-artifacts:
    needs: build-android
    runs-on: ubuntu-latest
    timeout-minutes: 20
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # was v4
        with:
          persist-credentials: false

      - name: Install Nix
        uses: DeterminateSystems/determinate-nix-action@96c5ee93a9dddf2830d31e1da6ec719077336c28 # v3.23.3
        with:
          source-tag: v3.23.3
          github-token: ""

      - name: Verify pinned Nix runtime
        run: bash scripts/ci/verify-nix-runtime.sh

      - name: Download Android artifacts
        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # was v4
        with:
          path: artifacts

      - name: Verify Android artifact reproducibility proofs
        env:
          MAPLE_REQUIRE_ANDROID_SIGNATURE_VERIFICATION: "1"
        run: nix develop --no-update-lock-file .#android -c ./scripts/ci/verify-release-artifacts.sh artifacts android