name: Mobile Android Release

# Release Android independently so App Store review cannot block its shipping cadence.
on:
  push:
    tags:
      - 'mobile-android-v*'
  workflow_dispatch:
    inputs:
      release_version:
        description: 'Optional exact mobile marketing version assertion, e.g. 0.0.22'
        required: false
        type: string
      publish_github_release:
        description: 'Create or update the mobile-android-v<version> GitHub Release'
        required: false
        default: true
        type: boolean

jobs:
  android-build:
    runs-on: ubuntu-latest

    # Grant contents:write for gh release create; build success alone does not authorize publication.
    permissions:
      contents: write

    outputs:
      publish_release: ${{ steps.release.outputs.publish_release }}
      version: ${{ steps.release.outputs.version }}

    defaults:
      run:
        working-directory: mobile

    steps:
      - name: Checkout
        uses: actions/checkout@v6

      # Release signing is enforced once ORCA_ANDROID_RELEASE_CERT_SHA256 (or ORCA_ANDROID_REQUIRE_RELEASE_SIGNING=true)
      # is set as a repository variable. Until then the build keeps the Expo debug key, with a warning.
      - name: Check release signing configuration
        id: signing
        env:
          ORCA_ANDROID_KEYSTORE_BASE64: ${{ secrets.ORCA_ANDROID_KEYSTORE_BASE64 }}
          ORCA_ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ORCA_ANDROID_KEYSTORE_PASSWORD }}
          ORCA_ANDROID_KEY_ALIAS: ${{ secrets.ORCA_ANDROID_KEY_ALIAS }}
          ORCA_ANDROID_KEY_PASSWORD: ${{ secrets.ORCA_ANDROID_KEY_PASSWORD }}
          ORCA_ANDROID_RELEASE_CERT_SHA256: ${{ vars.ORCA_ANDROID_RELEASE_CERT_SHA256 }}
          ORCA_ANDROID_REQUIRE_RELEASE_SIGNING: ${{ vars.ORCA_ANDROID_REQUIRE_RELEASE_SIGNING }}
        run: |
          set -euo pipefail
          if [ -z "${ORCA_ANDROID_RELEASE_CERT_SHA256:-}" ] && [ "${ORCA_ANDROID_REQUIRE_RELEASE_SIGNING:-}" != 'true' ]; then
            message="Android release signing is not enabled, so this APK is signed with the Expo debug key as before. Set the ORCA_ANDROID_RELEASE_CERT_SHA256 repository variable to enable it; see the Android Release Signing section of mobile/README.md."
            echo "::warning::$message"
            printf '### Android release signing not enabled\n\n%s\n' "$message" >> "$GITHUB_STEP_SUMMARY"
            echo "mode=debug" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          missing=()
          for name in ORCA_ANDROID_KEYSTORE_BASE64 ORCA_ANDROID_KEYSTORE_PASSWORD ORCA_ANDROID_KEY_ALIAS ORCA_ANDROID_KEY_PASSWORD ORCA_ANDROID_RELEASE_CERT_SHA256; do
            if [ -z "${!name:-}" ]; then
              missing+=("$name")
            fi
          done
          if [ "${#missing[@]}" -ne 0 ]; then
            echo "::error::Android release signing is enabled but not fully configured. Missing secrets or variables: ${missing[*]}. See the Android Release Signing section of mobile/README.md."
            exit 1
          fi
          echo "mode=release" >> "$GITHUB_OUTPUT"

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version: 24
          check-latest: true

      - name: Setup pnpm
        uses: pnpm/setup@v2
        with:
          install: false

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Resolve release version and version code
        id: release
        env:
          MOBILE_ANDROID_RELEASE_VERSION: ${{ github.event.inputs.release_version }}
          MOBILE_ANDROID_PUBLISH_RELEASE: ${{ github.event.inputs.publish_github_release }}
        run: node scripts/prepare-android-release.mjs

      - name: Setup JDK 17
        uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: 17

      - name: Expo prebuild
        run: npx expo prebuild --platform android --no-install

      - name: Decode release keystore
        if: steps.signing.outputs.mode == 'release'
        env:
          ORCA_ANDROID_KEYSTORE_BASE64: ${{ secrets.ORCA_ANDROID_KEYSTORE_BASE64 }}
        run: |
          set -euo pipefail
          umask 077
          printf '%s' "$ORCA_ANDROID_KEYSTORE_BASE64" | base64 --decode > "$RUNNER_TEMP/orca-release.keystore"

      - name: Build Android release APK
        env:
          # Empty in debug mode, which leaves Gradle on the debug key exactly as before.
          ORCA_ANDROID_REQUIRE_RELEASE_SIGNING: ${{ steps.signing.outputs.mode == 'release' && 'true' || '' }}
          ORCA_ANDROID_KEYSTORE_PATH: ${{ steps.signing.outputs.mode == 'release' && format('{0}/orca-release.keystore', runner.temp) || '' }}
          ORCA_ANDROID_KEYSTORE_PASSWORD: ${{ steps.signing.outputs.mode == 'release' && secrets.ORCA_ANDROID_KEYSTORE_PASSWORD || '' }}
          ORCA_ANDROID_KEY_ALIAS: ${{ steps.signing.outputs.mode == 'release' && secrets.ORCA_ANDROID_KEY_ALIAS || '' }}
          ORCA_ANDROID_KEY_PASSWORD: ${{ steps.signing.outputs.mode == 'release' && secrets.ORCA_ANDROID_KEY_PASSWORD || '' }}
        run: cd android && ./gradlew assembleRelease

      - name: Remove release keystore
        if: always()
        run: rm -f "$RUNNER_TEMP/orca-release.keystore"

      # Why pin the certificate: a regenerated or swapped key would make every installed copy refuse the update.
      - name: Verify APK signing certificate
        id: signer
        if: steps.signing.outputs.mode == 'release'
        env:
          EXPECTED_CERT_SHA256: ${{ vars.ORCA_ANDROID_RELEASE_CERT_SHA256 }}
        run: |
          set -euo pipefail
          # Expo template debug keystore, public in expo-template-bare-minimum.
          debug_cert="fac61745dc0903786fb9ede62a962b399f7348f0bb6f899b8332667591033b9c"
          apksigner="$(ls -d "$ANDROID_HOME"/build-tools/*/apksigner | sort -V | tail -1)"
          apks=(android/app/build/outputs/apk/release/*.apk)
          certs="$("$apksigner" verify --print-certs "${apks[0]}" | sed -n 's/^Signer #[0-9]* certificate SHA-256 digest: //p' | sort -u)"
          expected="$(printf '%s' "$EXPECTED_CERT_SHA256" | tr -d ': ' | tr 'A-F' 'a-f')"
          if [ "$certs" = "$debug_cert" ]; then
            echo "::error::The APK is signed with the public Expo debug key."
            exit 1
          fi
          if [ "$certs" != "$expected" ]; then
            echo "::error::The APK signing certificate ($certs) does not match ORCA_ANDROID_RELEASE_CERT_SHA256 ($expected)."
            exit 1
          fi
          echo "cert_sha256=$(printf '%s' "$certs" | tr 'a-f' 'A-F' | sed 's/../&:/g; s/:$//')" >> "$GITHUB_OUTPUT"
          echo "APK signing certificate SHA-256: $certs"

      # Publish size/digest to distinguish truncated downloads (missing tail signature block) from bad APK builds.
      - name: Checksum the APK
        id: apk
        run: |
          set -euo pipefail
          shopt -s nullglob
          apks=(android/app/build/outputs/apk/release/*.apk)
          if [ "${#apks[@]}" -ne 1 ]; then
            echo "Expected exactly one release APK, found ${#apks[@]}" >&2
            exit 1
          fi

          apk="${apks[0]}"
          bytes="$(wc -c < "$apk" | tr -d ' ')"
          sha256="$(sha256sum "$apk" | cut -d ' ' -f 1)"
          # Publish sha256sum -c sidecars, excluded by *.apk globs. Use binary “ *” mode:
          # Git Bash text-mode newline translation can reject a valid APK.
          printf '%s *%s\n' "$sha256" "$(basename "$apk")" > "$apk.sha256"

          {
            echo "checksum=$apk.sha256"
            echo "bytes=$bytes"
            echo "sha256=$sha256"
          } >> "$GITHUB_OUTPUT"
          echo "APK is $bytes bytes, sha256 $sha256"

      - name: Upload APK artifact
        uses: actions/upload-artifact@v7
        with:
          name: orca-mobile-apk
          path: |
            mobile/android/app/build/outputs/apk/release/*.apk
            mobile/android/app/build/outputs/apk/release/*.apk.sha256

      - name: Ensure GitHub release tag
        if: steps.release.outputs.publish_release == 'true' && !startsWith(github.ref, 'refs/tags/mobile-android-v')
        run: |
          set -euo pipefail
          tag="${{ steps.release.outputs.tag }}"

          if git ls-remote --exit-code --tags origin "refs/tags/$tag" >/dev/null 2>&1; then
            echo "Tag $tag already exists"
            exit 0
          fi

          git tag "$tag" "$GITHUB_SHA"
          git push origin "refs/tags/$tag"

      - name: Create GitHub Release
        if: steps.release.outputs.publish_release == 'true'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          set -euo pipefail
          tag="${{ steps.release.outputs.tag }}"
          notes_file="$RUNNER_TEMP/android-release-notes.md"

          # printf rather than a heredoc: YAML block indentation would leak into the Markdown.
          # Both platforms' commands are named because a reader on macOS has no sha256sum.
          # Only release-signed builds list a certificate, since only they are pinned.
          signer_line=''
          if [ -n '${{ steps.signer.outputs.cert_sha256 }}' ]; then
            signer_line='- Signing certificate SHA-256: `${{ steps.signer.outputs.cert_sha256 }}`\n'
          fi
          verification_section() {
            printf '\n### Verify your download\n\n- Size: `%s` bytes\n- SHA-256: `%s`\n%b\nA "no certificate" or "problem parsing the package" install failure is usually a truncated download — check the size first, then `sha256sum -c app-release.apk.sha256` (`shasum -a 256 -c` on macOS).\n' \
              '${{ steps.apk.outputs.bytes }}' '${{ steps.apk.outputs.sha256 }}' "$signer_line"
          }

          # Verification is last; replace from heading to EOF, accepting API-roundtripped CRLFs.
          drop_verification_section() {
            sed '/^### Verify your download\r*$/,$d'
          }

          # Truncate by characters like desktop releases and reserve the appended section inside GitHub’s cap,
          # or --clobber could replace assets before notes fail. wc -c over-reserves multibyte section text safely.
          write_notes_with_verification() {
            NOTES_FILE="$notes_file" \
            NOTES_RESERVE="$(verification_section | wc -c | tr -d ' ')" \
            NOTES_MODULE="$GITHUB_WORKSPACE/config/scripts/release/publication/create-draft-release.mjs" \
            node --input-type=module -e '
              const { readFileSync, writeFileSync } = await import("node:fs")
              const { pathToFileURL } = await import("node:url")
              const { MAX_RELEASE_BODY_LENGTH, truncateReleaseBody } = await import(
                pathToFileURL(process.env.NOTES_MODULE).href
              )
              const file = process.env.NOTES_FILE
              const max = MAX_RELEASE_BODY_LENGTH - Number(process.env.NOTES_RESERVE)
              writeFileSync(file, truncateReleaseBody(readFileSync(file, "utf8"), max))
            '
            verification_section >> "$notes_file"
          }

          if gh release view "$tag" --repo "$GITHUB_REPOSITORY" >/dev/null 2>&1; then
            gh release upload "$tag" \
              --repo "$GITHUB_REPOSITORY" \
              --clobber \
              android/app/build/outputs/apk/release/*.apk \
              "${{ steps.apk.outputs.checksum }}"
            # --clobber replaced the APK; rewrite its digest so users cannot compare against obsolete bytes.
            gh release view "$tag" --repo "$GITHUB_REPOSITORY" --json body --jq .body \
              | drop_verification_section > "$notes_file"
            write_notes_with_verification
            gh release edit "$tag" --repo "$GITHUB_REPOSITORY" --notes-file "$notes_file"
          else
            # Side-branch release tags make automatic previous-tag detection span multiple releases and exceed
            # the 125000-character API cap; pin the comparison base and truncate.
            previous_tag="$(
              gh release list --repo "$GITHUB_REPOSITORY" --limit 200 --json tagName --jq '.[].tagName' \
                | grep '^mobile-android-v' | grep -Fxv "$tag" | sort -V | tail -1 || true
            )"

            if [ -n "$previous_tag" ]; then
              # gh writes HTTP error JSON to stdout too; require exit success, not merely a nonempty file.
              if ! gh api "repos/$GITHUB_REPOSITORY/releases/generate-notes" -X POST \
                -f tag_name="$tag" \
                -f target_commitish="$GITHUB_SHA" \
                -f previous_tag_name="$previous_tag" \
                --jq .body > "$notes_file"; then
                : > "$notes_file"
              fi
            fi
            if [ ! -s "$notes_file" ]; then
              printf 'Orca Mobile Android %s\n' "$tag" > "$notes_file"
            fi
            write_notes_with_verification

            gh release create "$tag" \
              --repo "$GITHUB_REPOSITORY" \
              --title "Orca Mobile Android $tag" \
              --prerelease \
              --latest=false \
              --notes-file "$notes_file" \
              android/app/build/outputs/apk/release/*.apk \
              "${{ steps.apk.outputs.checksum }}"
          fi

  # Advisory like the site bump: a failed mirror only leaves orca.dev's "mirror link" on the prior APK.
  release-mirror-r2:
    needs: android-build
    if: needs.android-build.outputs.publish_release == 'true'
    uses: ./.github/workflows/release-mirror-r2.yml
    with:
      tag: mobile-android-v${{ needs.android-build.outputs.version }}
      assets: app-release.apk
    secrets: inherit

  # Keep site bump advisory after publication; failure only leaves its download link on the prior APK.
  # Why after the mirror: the site's mirror link uses the bumped version, so upload the APK first
  # (success not required, so a mirror outage never blocks the bump).
  bump-apk-download:
    needs: [android-build, release-mirror-r2]
    if: ${{ !cancelled() && needs.android-build.outputs.publish_release == 'true' }}
    runs-on: ubuntu-latest
    continue-on-error: true
    permissions:
      contents: read
    env:
      VERSION: ${{ needs.android-build.outputs.version }}
      SITE_REPO: stablyai/orca-marketing-website
      BRANCH: bump/android-apk-${{ needs.android-build.outputs.version }}
    steps:
      - name: Checkout orca
        uses: actions/checkout@v6
        with:
          sparse-checkout: config/scripts

      # Why the buf0-bot app, as in homebrew-bump.yml: GITHUB_TOKEN cannot push to another
      # repo, and a PR it opened would not run the site's checks.
      - name: Generate buf0-bot token
        id: app-token
        uses: actions/create-github-app-token@v3
        with:
          app-id: 2590194
          private-key: ${{ secrets.BUFO_BOT_PRIVATE_KEY }}
          owner: stablyai
          repositories: orca-marketing-website
          permission-contents: write
          permission-pull-requests: write

      - name: Checkout marketing site
        uses: actions/checkout@v6
        with:
          repository: stablyai/orca-marketing-website
          path: site
          token: ${{ steps.app-token.outputs.token }}

      - name: Open and merge the version bump PR
        working-directory: site
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}
        run: |
          set -euo pipefail
          node ../config/scripts/release/versioning/bump-android-apk-download-version.mjs src/lib/downloadTargets.ts "$VERSION"
          if git diff --quiet; then
            echo "The site's main branch already has Android APK $VERSION or newer." >> "$GITHUB_STEP_SUMMARY"
            exit 0
          fi

          title="Point the Android APK download at $VERSION"
          git config user.name "buf0-bot[bot]"
          git config user.email "252831055+buf0-bot[bot]@users.noreply.github.com"
          git checkout -b "$BRANCH"
          git commit -am "$title"
          # Why --force: a rerun rebuilds the branch on the site's current main.
          git push --force origin "$BRANCH"

          # Why: a rerun of the same release reuses its open PR instead of opening another.
          pr="$(gh pr list --repo "$SITE_REPO" --head "$BRANCH" --state open --json url --jq '.[].url')"
          if [ -z "$pr" ]; then
            pr="$(gh pr create --repo "$SITE_REPO" --base main --head "$BRANCH" --title "$title" \
              --body "Opened by the [Android release run]($GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID) for mobile-android-v$VERSION. Merging points /download/android and every APK link on the site at the new APK.")"
          fi
          echo "Android APK download bump: $pr" >> "$GITHUB_STEP_SUMMARY"

          # Why wait for checks: they push a deploy commit onto the branch (merging first fails with
          # "Head branch was modified"), and a failed site build must not merge. Main's push deploys.
          sleep 20
          gh pr checks "$pr" --repo "$SITE_REPO" --watch --interval 15 || true
          failed="$(gh pr checks "$pr" --repo "$SITE_REPO" --json bucket --jq 'map(select(.bucket == "fail")) | length' 2>/dev/null || true)"
          # The deploy commit is [skip ci], so the final head may report no checks at all.
          if [ "${failed:-0}" != "0" ]; then
            echo "::warning::The site's checks failed on $pr; not merging. Fix and merge it by hand."
            exit 1
          fi
          for _ in 1 2 3; do
            if gh pr merge "$pr" --repo "$SITE_REPO" --squash --delete-branch; then
              echo "Merged; the site deploys from main." >> "$GITHUB_STEP_SUMMARY"
              exit 0
            fi
            sleep 30
          done
          echo "::warning::Could not merge $pr; merge it by hand to update /download/android."
          exit 1

      - name: Report a failed bump
        if: failure()
        run: |
          echo "::warning::The release is published, but the site's Android APK download was not bumped to $VERSION."
          printf '### Android APK download not bumped\n\nThe release is published, but /download/android still serves the previous APK. Rerun this job, or set `ANDROID_RELEASE_VERSION` in `src/lib/downloadTargets.ts` of %s to `%s` by hand.\n' "$SITE_REPO" "$VERSION" >> "$GITHUB_STEP_SUMMARY"