# Android CI — JVM unit tests + Android Lint + R8 release-build gate + static
# repo scans + secret scan.
#
# Real Firebase/RC secrets are intentionally ABSENT: the debug build compiles with
# an empty APP_CHECK_DEBUG_TOKEN and a placeholder RC_API_KEY (see
# app/build.gradle.kts `secret()` resolution). CI-built APKs therefore cannot pass
# App Check once enforcement is on — expected.
#
# The `release-build` job DOES exercise the RELEASE variant (minify+shrink+sign)
# using a THROWAWAY keystore + a dummy RC_API_KEY, purely to satisfy the release
# guards; that AAB is never distributed. A green release-build proves the R8
# toolchain, not that reflectively-loaded classes survive shrinking at runtime.
#
# app/google-services.json is gitignored (live Firebase config), but the
# google-services Gradle plugin hard-fails without one, so CI copies the dummy
# stub from .github/ci/google-services.json before any Gradle task.
name: Android CI

on:
  push:
    branches: [main, dev]
  pull_request:

jobs:
  unit-tests:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4

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

      - uses: gradle/actions/setup-gradle@v4

      - name: Provide stub google-services.json (real one is gitignored)
        run: |
          if [ ! -f app/google-services.json ]; then
            cp .github/ci/google-services.json app/google-services.json
          fi

      - name: Unit tests
        run: ./gradlew testDebugUnitTest

      - name: Upload test reports on failure
        if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: unit-test-reports
          path: app/build/reports/tests/

  android-lint:
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@v4

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

      - uses: gradle/actions/setup-gradle@v4

      - name: Provide stub google-services.json (real one is gitignored)
        run: |
          if [ ! -f app/google-services.json ]; then
            cp .github/ci/google-services.json app/google-services.json
          fi

      # Fails on error-severity issues (NewApi, correctness). This gate caught two
      # LocalDate.ofInstant NewApi crashes (API 34 call, minSdk 26) on 2026-07-11
      # that emulator QA missed because the fixture emulators run API 34+.
      - name: Android Lint (debug)
        run: ./gradlew :app:lintDebug

      - name: Upload lint report on failure
        if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: lint-report
          path: app/build/reports/lint-results-debug.html

  release-build:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4

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

      - uses: gradle/actions/setup-gradle@v4

      - name: Provide stub google-services.json (real one is gitignored)
        run: |
          if [ ! -f app/google-services.json ]; then
            cp .github/ci/google-services.json app/google-services.json
          fi

      # Throwaway upload key — only exists to satisfy the release signing guard.
      # This AAB is never distributed.
      - name: Generate throwaway CI signing keystore
        run: |
          keytool -genkeypair -v \
            -keystore "$RUNNER_TEMP/ci-release.jks" \
            -alias ci -keyalg RSA -keysize 2048 -validity 30 \
            -storepass ci_ci_ci -keypass ci_ci_ci \
            -dname "CN=CI, O=CI, C=US"

      - name: Build minified release bundle (R8 gate)
        env:
          RC_API_KEY: ci_dummy_rc_key_not_real
          RELEASE_STORE_FILE: ${{ runner.temp }}/ci-release.jks
          RELEASE_STORE_PASSWORD: ci_ci_ci
          RELEASE_KEY_ALIAS: ci
          RELEASE_KEY_PASSWORD: ci_ci_ci
        # Skip the Crashlytics mapping upload — it needs real Firebase creds the
        # stub google-services.json does not have.
        run: ./gradlew :app:bundleRelease -x uploadCrashlyticsMappingFileRelease

      - name: Upload R8 mapping on failure
        if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: r8-mapping
          path: app/build/outputs/mapping/release/

  repo-scans:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4

      # Static scanners that gate known regression classes (theme tokens,
      # navigation wiring, IME flags, painter/XML drawable misuse).
      - name: Scan scripts
        run: |
          bash scripts/theme-scan.sh
          bash scripts/wiring-scan.sh
          bash scripts/ime-scan.sh
          bash scripts/painter-xml-scan.sh

  gitleaks:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0 # full history so the scan covers every commit

      - name: Run gitleaks
        env:
          GITLEAKS_VERSION: "8.21.2"
        run: |
          curl -sSfL "https://github.com/gitleaks/gitleaks/releases/download/v${GITLEAKS_VERSION}/gitleaks_${GITLEAKS_VERSION}_linux_x64.tar.gz" | tar -xz gitleaks
          ./gitleaks detect --source . --no-banner --redact