name: CI
concurrency:
  group: ci-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true
on:
  # The merge queue is the pre-merge gate for the protected branches (master,
  # develop): a merge_group run validates the merged result before code lands. For
  # now PRs and merge_group runs build the same narrowed board subset (--level pr);
  # see the setup job. push still runs the full matrix on master/develop (post-merge)
  # as well as on the event/* and feature/* branches, which have no merge queue.
  merge_group:
    types: [checks_requested]
    branches:
      - master
      - develop

  push:
    branches:
      - master
      - develop
      - event/*
      - feature/*
    paths-ignore:
      - "**.md"
      - version.properties

  pull_request:
    branches:
      - master
      - develop
      - event/*
      - feature/*
    paths-ignore:
      - "**.md"
      #- "**.yml"

  schedule:
    # Nightly develop build, published to the meshtastic-firmware-nightly R2
    # bucket (no GitHub release).
    # Scheduled runs execute on the default branch (develop). 07:00 UTC avoids the 00:00 tests
    # and 02:00 daily_packaging crons.
    - cron: 0 7 * * * # Nightly develop build/publish (default branch is develop)

  workflow_dispatch:
    inputs:
      # trunk-ignore(checkov/CKV_GHA_7): intentional manual-test switch for the nightly publish path
      nightly:
        description: "Nightly mode: build + publish develop to the nightly R2 bucket (skips creating a GitHub release)"
        type: boolean
        default: false

permissions: read-all

jobs:
  setup:
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v7
        with:
          # Needed to diff against the base branch for newly added variants.
          fetch-depth: 0
      - uses: actions/setup-python@v7.0.0
        with:
          python-version: 3.x
          cache: pip
      - run: pip install -U platformio
      - name: Generate matrix
        id: jsonStep
        env:
          BASE_REF: ${{ github.base_ref }}
          MERGE_GROUP_BASE_SHA: ${{ github.event.merge_group.base_sha }}
        run: |
          # A new board is 'release' and gets no CI until after merge, so force-build the
          # first env of each ADDED variant config. A new env in an existing one does not count.
          DIFF_BASE=""
          if [[ "$GITHUB_EVENT_NAME" == "pull_request" ]]; then
            # checkout above already fetched every branch (fetch-depth: 0), so the base ref
            # is local. Do not re-fetch it with --depth=1: that grafts the fetched tip as
            # parentless, and merge-base then finds no common commit whenever the base
            # branch has moved past this merge commit, which is every re-run of an older run.
            DIFF_BASE=$(git merge-base "origin/$BASE_REF" HEAD)
          elif [[ "$GITHUB_EVENT_NAME" == "merge_group" ]]; then
            DIFF_BASE="$MERGE_GROUP_BASE_SHA"
          fi
          ADDED_ARGS=()
          if [[ -n "$DIFF_BASE" ]]; then
            # Assign rather than pipe: a failing diff must abort the step under 'set -e',
            # not silently yield an empty list and drop the new board from the matrix.
            ADDED_CONFIGS=$(git diff --name-only --diff-filter=A \
              "$DIFF_BASE" HEAD -- 'variants/**/platformio.ini')
            while IFS= read -r cfg; do
              [[ -n "$cfg" ]] && ADDED_ARGS+=(--added-config "$cfg")
            done <<<"$ADDED_CONFIGS"
          fi
          # PRs and (for now) merge_group builds use the narrowed --level pr board
          # subset. Full-matrix builds run on push / schedule / workflow_dispatch.
          if [[ "$GITHUB_EVENT_NAME" == "pull_request" || "$GITHUB_EVENT_NAME" == "merge_group" ]]; then
            TARGETS=$(./bin/generate_ci_matrix.py all --level pr "${ADDED_ARGS[@]}")
          else
            TARGETS=$(./bin/generate_ci_matrix.py all)
          fi
          echo "Name: $GITHUB_REF_NAME Base: $GITHUB_BASE_REF Ref: $GITHUB_REF"
          echo "all=$TARGETS" >> $GITHUB_OUTPUT
          echo "$TARGETS" >> $GITHUB_STEP_SUMMARY
    outputs:
      all: ${{ steps.jsonStep.outputs.all }}

  version:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - name: Get release version string
        run: |
          echo "long=$(./bin/buildinfo.py long)" >> $GITHUB_OUTPUT
          echo "deb=$(./bin/buildinfo.py deb)" >> $GITHUB_OUTPUT
        id: version
        env:
          BUILD_LOCATION: local
    outputs:
      long: ${{ steps.version.outputs.long }}
      deb: ${{ steps.version.outputs.deb }}

  check:
    needs: setup
    strategy:
      fail-fast: false
      matrix:
        check: ${{ fromJson(needs.setup.outputs.all) }}
    # Runs on GitHub-hosted runners so checks don't compete with builds for the
    # self-hosted 'arctastic' pool (which builds use).
    runs-on: ubuntu-latest
    # Only run checks for PRs and Merge Queue runs.
    if: contains(fromJSON('["pull_request", "merge_group"]'), github.event_name)
    steps:
      - uses: actions/checkout@v7
        with:
          submodules: recursive
      - name: Check ${{ matrix.check.board }}
        uses: meshtastic/gh-action-firmware@main
        with:
          pio_platform: ${{ matrix.check.platform }}
          pio_env: ${{ matrix.check.board }}
          pio_target: check

  build:
    needs: [setup, version]
    strategy:
      fail-fast: false
      matrix:
        build: ${{ fromJson(needs.setup.outputs.all) }}
    uses: ./.github/workflows/build_firmware.yml
    with:
      version: ${{ needs.version.outputs.long }}
      pio_env: ${{ matrix.build.board }}
      platform: ${{ matrix.build.platform }}

  build-debian-src:
    if: github.repository_owner == 'meshtastic' && github.event_name != 'schedule' && github.event.inputs.nightly != 'true'
    uses: ./.github/workflows/build_debian_src.yml
    with:
      series: UNRELEASED
      build_location: local
    secrets: inherit

  MacOS:
    if: github.event_name != 'schedule' && github.event.inputs.nightly != 'true' && !contains(github.ref_name, 'event/')
    strategy:
      fail-fast: false
      matrix:
        macos_ver:
          - "27" # ARM64
          - "26" # ARM64
          # - '26-intel' # x86_64
    uses: ./.github/workflows/build_macos_bin.yml
    with:
      macos_ver: ${{ matrix.macos_ver }}
    # secrets: inherit

  Windows:
    if: github.event_name != 'schedule' && github.event.inputs.nightly != 'true' && !contains(github.ref_name, 'event/')
    strategy:
      fail-fast: false
      matrix:
        windows_ver:
          - "2025" # x86_64
    uses: ./.github/workflows/build_windows_bin.yml
    with:
      windows_ver: ${{ matrix.windows_ver }}
    # secrets: inherit

  package-pio-deps-native-tft:
    if: github.repository_owner == 'meshtastic' && github.event_name == 'workflow_dispatch'
    uses: ./.github/workflows/package_pio_deps.yml
    with:
      pio_env: native-tft
    secrets: inherit

  test-native:
    if: github.repository_owner == 'meshtastic' && github.event_name != 'schedule' && github.event.inputs.nightly != 'true' && !contains(github.ref_name, 'event/')
    permissions: # Needed for dorny/test-reporter.
      contents: read
      actions: read
      checks: write
    uses: ./.github/workflows/test_native.yml

  build-wasm:
    if: github.event_name != 'schedule' && github.event.inputs.nightly != 'true' && !contains(github.ref_name, 'event/')
    # Build the WebAssembly portduino node ([env:native-wasm]) as part of normal CI,
    # like the other platforms. It's a dedicated job (not a row in the `build`
    # matrix) because its artifact is meshnode.{mjs,wasm} - not a flashable
    # .bin/.uf2/.hex - and it needs the Emscripten SDK; board_level=extra keeps
    # it out of generate_ci_matrix.py.
    uses: ./.github/workflows/build_portduino_wasm.yml

  docker:
    if: github.event_name != 'schedule' && github.event.inputs.nightly != 'true' && !contains(github.ref_name, 'event/')
    permissions: # Needed for pushing to GHCR.
      contents: read
      packages: write
    strategy:
      fail-fast: false
      matrix:
        distro: [debian, alpine]
        platform: [linux/arm64]
        pio_env: [native-tft]
    uses: ./.github/workflows/docker_build.yml
    with:
      distro: ${{ matrix.distro }}
      platform: ${{ matrix.platform }}
      runs-on: ${{ contains(matrix.platform, 'arm') && 'ubuntu-24.04-arm' || 'ubuntu-24.04' }}
      pio_env: ${{ matrix.pio_env }}
      push: false

  # Single, stable status check for branch protection.
  # Always runs and passes only if every build and check that ran succeeded.
  ci-gate:
    # Consumed in PRs and Merge Queue
    if: contains(fromJSON('["pull_request", "merge_group"]'), github.event_name) && !cancelled()
    needs: [build, check]
    runs-on: ubuntu-slim
    steps:
      - name: Verify build and check results
        run: |
          echo "build=${{ needs.build.result }} check=${{ needs.check.result }}"
          if [[ "${{ needs.build.result }}" != "success" ]]; then
            echo "::error::One or more firmware builds failed, were cancelled, or did not run."
            exit 1
          fi
          case "${{ needs.check.result }}" in
            success | skipped) ;;
            *)
              echo "::error::One or more checks failed or were cancelled (${{ needs.check.result }})."
              exit 1
              ;;
          esac

  gather-artifacts:
    # Only run on Release (workflow_dispatch) and Nightly (schedule) runs, not on PRs or merge_group runs.
    if: github.repository_owner == 'meshtastic' && contains(fromJSON('["workflow_dispatch", "schedule"]'), github.event_name)
    strategy:
      fail-fast: false
      matrix:
        arch:
          - esp32
          - esp32s3
          - esp32c3
          - esp32c6
          - nrf52840
          - rp2040
          - rp2350
          - stm32
    runs-on: ubuntu-latest
    needs: [version, build]
    steps:
      - name: Checkout code
        uses: actions/checkout@v7

      - uses: actions/download-artifact@v8
        with:
          path: ./
          pattern: firmware-${{matrix.arch}}-*
          merge-multiple: true

      - name: Display structure of downloaded files
        run: ls -R

      - name: Repackage in single firmware zip
        uses: actions/upload-artifact@v7
        with:
          name: firmware-${{matrix.arch}}-${{ needs.version.outputs.long }}
          overwrite: true
          path: |
            ./firmware-*.mt.json
            ./firmware-*.bin
            ./firmware-*.uf2
            ./firmware-*.hex
            ./firmware-*.zip
            ./device-*.sh
            ./device-*.bat
            ./littlefs-*.bin
            ./bleota*bin
            ./mt-*-ota.bin
            ./Meshtastic_nRF52_factory_erase*.uf2
          retention-days: 30

      - uses: actions/download-artifact@v8
        with:
          name: firmware-${{matrix.arch}}-${{ needs.version.outputs.long }}
          merge-multiple: true
          path: ./output

      # For diagnostics
      - name: Show artifacts
        run: ls -lR

      - name: Device scripts permissions
        run: |
          chmod +x ./output/device-install.sh || true
          chmod +x ./output/device-update.sh || true

      - name: Zip firmware
        run: zip -j -9 -r ./firmware-${{matrix.arch}}-${{ needs.version.outputs.long }}.zip ./output

      - name: Repackage in single elfs zip
        uses: actions/upload-artifact@v7
        with:
          name: debug-elfs-${{matrix.arch}}-${{ needs.version.outputs.long }}
          overwrite: true
          path: ./*.elf
          retention-days: 30

  firmware-size-report:
    if: github.repository_owner == 'meshtastic' && github.event_name != 'schedule' && github.event.inputs.nightly != 'true'
    continue-on-error: true
    permissions:
      contents: read
      actions: read
    runs-on: ubuntu-latest
    needs: [build]
    steps:
      - uses: actions/checkout@v7

      - name: Download current manifests
        uses: actions/download-artifact@v8
        with:
          path: ./manifests/
          pattern: manifest-*
          merge-multiple: true

      - name: Collect current firmware sizes
        run: python3 bin/collect_sizes.py ./manifests/ ./current-sizes.json

      - name: Upload size report artifact
        uses: actions/upload-artifact@v7
        with:
          name: firmware-sizes-${{ github.sha }}
          overwrite: true
          path: ./current-sizes.json
          retention-days: 90

      - name: Download baseline sizes from develop
        if: github.event_name == 'pull_request'
        continue-on-error: true
        id: baseline-develop
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          RUN_ID=$(gh run list -R "${{ github.repository }}" \
            --workflow CI --branch develop --status success \
            --limit 1 --json databaseId --jq '.[0].databaseId // empty')
          if [ -n "$RUN_ID" ]; then
            ARTIFACT_NAME=$(gh api "repos/${{ github.repository }}/actions/runs/${RUN_ID}/artifacts" \
              --jq '.artifacts[] | select(.name | startswith("firmware-sizes-")) | select(.expired == false) | .name' | head -1)
            if [ -n "$ARTIFACT_NAME" ]; then
              gh run download "$RUN_ID" -R "${{ github.repository }}" \
                --name "$ARTIFACT_NAME" --dir ./baseline-develop/
              cp "./baseline-develop/current-sizes.json" ./develop-sizes.json
              echo "found=true" >> "$GITHUB_OUTPUT"
            else
              echo "found=false" >> "$GITHUB_OUTPUT"
            fi
          else
            echo "found=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Download baseline sizes from master
        if: github.event_name == 'pull_request'
        continue-on-error: true
        id: baseline-master
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          RUN_ID=$(gh run list -R "${{ github.repository }}" \
            --workflow CI --branch master --status success \
            --limit 1 --json databaseId --jq '.[0].databaseId // empty')
          if [ -n "$RUN_ID" ]; then
            ARTIFACT_NAME=$(gh api "repos/${{ github.repository }}/actions/runs/${RUN_ID}/artifacts" \
              --jq '.artifacts[] | select(.name | startswith("firmware-sizes-")) | select(.expired == false) | .name' | head -1)
            if [ -n "$ARTIFACT_NAME" ]; then
              gh run download "$RUN_ID" -R "${{ github.repository }}" \
                --name "$ARTIFACT_NAME" --dir ./baseline-master/
              cp "./baseline-master/current-sizes.json" ./master-sizes.json
              echo "found=true" >> "$GITHUB_OUTPUT"
            else
              echo "found=false" >> "$GITHUB_OUTPUT"
            fi
          else
            echo "found=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Generate size comparison report
        if: github.event_name == 'pull_request'
        id: report
        run: |
          ARGS="./current-sizes.json --budgets bin/ram_budgets.json"
          if [ -f ./develop-sizes.json ]; then
            ARGS="$ARGS --baseline develop:./develop-sizes.json"
          fi
          if [ -f ./master-sizes.json ]; then
            ARGS="$ARGS --baseline master:./master-sizes.json"
          fi
          REPORT=$(python3 bin/size_report.py $ARGS)
          if [ -z "$REPORT" ]; then
            echo "has_report=false" >> "$GITHUB_OUTPUT"
          else
            echo "has_report=true" >> "$GITHUB_OUTPUT"
            {
              echo '<!-- firmware-size-report -->'
              echo '# Firmware Size Report'
              echo ''
              echo "$REPORT"
              echo ''
              echo '---'
              echo "*Updated for ${{ github.sha }}*"
            } > ./size-report.md
            cat ./size-report.md >> "$GITHUB_STEP_SUMMARY"
          fi

      - name: Save PR number
        if: github.event_name == 'pull_request' && steps.report.outputs.has_report == 'true'
        run: echo "${{ github.event.pull_request.number }}" > ./pr-number.txt

      - name: Upload size report
        if: github.event_name == 'pull_request' && steps.report.outputs.has_report == 'true'
        uses: actions/upload-artifact@v7
        with:
          name: size-report
          path: |
            ./size-report.md
            ./pr-number.txt
          retention-days: 5

  # RAM/flash guardrails: fails CI when an env listed in bin/ram_budgets.json
  # exceeds its static RAM (.data+.bss) or flash budget. Kept separate from
  # firmware-size-report, which is informational and continue-on-error.
  size-budget-gate:
    if: github.event_name != 'schedule' && github.event.inputs.nightly != 'true'
    permissions:
      contents: read
      actions: read
    runs-on: ubuntu-latest
    needs: [build]
    steps:
      - uses: actions/checkout@v7

      # No continue-on-error / empty-dir fallback: the gate must fail closed when
      # the data it enforces on cannot be fetched (size_report.py additionally
      # fails on missing budgeted envs under --enforce-budgets).
      - name: Download current manifests
        uses: actions/download-artifact@v8
        with:
          path: ./manifests/
          pattern: manifest-*
          merge-multiple: true

      - name: Collect current firmware sizes
        run: python3 bin/collect_sizes.py ./manifests/ ./current-sizes.json

      - name: Enforce RAM/flash budgets
        run: python3 bin/size_report.py ./current-sizes.json --budgets bin/ram_budgets.json --enforce-budgets

  release-artifacts:
    permissions: # Needed for 'gh release upload'.
      contents: write
    runs-on: ubuntu-latest
    if: github.repository_owner == 'meshtastic' && github.event_name == 'workflow_dispatch' && github.event.inputs.nightly != 'true'
    outputs:
      upload_url: ${{ steps.create_release.outputs.upload_url }}
    needs:
      - setup
      - version
      - gather-artifacts
      - build-debian-src
      - package-pio-deps-native-tft
      # - MacOS
    steps:
      - name: Checkout
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Setup Python
        uses: actions/setup-python@v7.0.0
        with:
          python-version: 3.x

      - name: Generate release notes
        id: release_notes
        run: |
          chmod +x ./bin/generate_release_notes.py
          NOTES=$(./bin/generate_release_notes.py ${{ needs.version.outputs.long }} --compare-ref HEAD 2>release_notes.log)
          echo "notes<<EOF" >> $GITHUB_OUTPUT
          echo "$NOTES" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT
          echo "### Release note range" >> $GITHUB_STEP_SUMMARY
          cat release_notes.log >> $GITHUB_STEP_SUMMARY
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create release
        uses: softprops/action-gh-release@v3
        id: create_release
        with:
          draft: true
          prerelease: true
          name: Meshtastic Firmware ${{ needs.version.outputs.long }} Alpha
          tag_name: v${{ needs.version.outputs.long }}
          target_commitish: ${{ github.sha }}
          body: ${{ steps.release_notes.outputs.notes }}

      - name: Download source deb
        uses: actions/download-artifact@v8
        with:
          pattern: firmware-debian-${{ needs.version.outputs.deb }}~UNRELEASED-src
          merge-multiple: true
          path: ./output/debian-src

      - name: Download `native-tft` pio deps
        uses: actions/download-artifact@v8
        with:
          pattern: platformio-deps-native-tft-${{ needs.version.outputs.long }}
          merge-multiple: true
          path: ./output/pio-deps-native-tft

      - name: Zip Linux sources
        working-directory: output
        run: |
          zip -j -9 -r ./meshtasticd-${{ needs.version.outputs.deb }}-src.zip ./debian-src
          zip -9 -r ./platformio-deps-native-tft-${{ needs.version.outputs.long }}.zip ./pio-deps-native-tft

      # For diagnostics
      - name: Display structure of downloaded files
        run: ls -lR

      - name: Generate Release manifest
        run: |
          jq -n --arg ver "${{ needs.version.outputs.long }}" --argjson targets ${{ toJson(needs.setup.outputs.all) }} '{
            "version": $ver,
            "targets": $targets
          }' > firmware-${{ needs.version.outputs.long }}.json

      - name: Save Release manifest artifact
        uses: actions/upload-artifact@v7
        with:
          name: manifest-${{ needs.version.outputs.long }}
          overwrite: true
          path: firmware-${{ needs.version.outputs.long }}.json

      - name: Add sources to GitHub Release
        # Only run when targeting the default branch with workflow_dispatch
        if: github.ref_name == github.event.repository.default_branch
        run: |
          gh release upload v${{ needs.version.outputs.long }} ./firmware-${{ needs.version.outputs.long }}.json
          gh release upload v${{ needs.version.outputs.long }} ./output/meshtasticd-${{ needs.version.outputs.deb }}-src.zip
          gh release upload v${{ needs.version.outputs.long }} ./output/platformio-deps-native-tft-${{ needs.version.outputs.long }}.zip
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  release-firmware:
    permissions: # Needed for 'gh release upload'.
      contents: write
    strategy:
      fail-fast: false
      matrix:
        arch:
          - esp32
          - esp32s3
          - esp32c3
          - esp32c6
          - nrf52840
          - rp2040
          - rp2350
          - stm32
    runs-on: ubuntu-latest
    if: github.repository_owner == 'meshtastic' && github.event_name == 'workflow_dispatch' && github.event.inputs.nightly != 'true'
    needs: [release-artifacts, version]
    steps:
      - name: Checkout
        uses: actions/checkout@v7

      - name: Setup Python
        uses: actions/setup-python@v7.0.0
        with:
          python-version: 3.x

      - uses: actions/download-artifact@v8
        with:
          pattern: firmware-${{matrix.arch}}-${{ needs.version.outputs.long }}
          merge-multiple: true
          path: ./output

      - name: Display structure of downloaded files
        run: ls -lR

      - name: Device scripts permissions
        run: |
          chmod +x ./output/device-install.sh || true
          chmod +x ./output/device-update.sh || true

      - name: Zip firmware
        run: zip -j -9 -r ./firmware-${{matrix.arch}}-${{ needs.version.outputs.long }}.zip ./output

      - uses: actions/download-artifact@v8
        with:
          name: debug-elfs-${{matrix.arch}}-${{ needs.version.outputs.long }}
          merge-multiple: true
          path: ./elfs

      - name: Zip debug elfs
        run: zip -j -9 -r ./debug-elfs-${{matrix.arch}}-${{ needs.version.outputs.long }}.zip ./elfs

      # For diagnostics
      - name: Display structure of downloaded files
        run: ls -lR

      - name: Add bins and debug elfs to GitHub Release
        # Only run when targeting the default branch with workflow_dispatch
        if: github.ref_name == github.event.repository.default_branch
        run: |
          gh release upload v${{ needs.version.outputs.long }} ./firmware-${{matrix.arch}}-${{ needs.version.outputs.long }}.zip
          gh release upload v${{ needs.version.outputs.long }} ./debug-elfs-${{matrix.arch}}-${{ needs.version.outputs.long }}.zip
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  publish-firmware:
    runs-on: ubuntu-24.04
    if: github.repository_owner == 'meshtastic' && github.event_name == 'workflow_dispatch' && github.event.inputs.nightly != 'true'
    needs: [release-firmware, version]
    env:
      targets: |-
        esp32,esp32s3,esp32c3,esp32c6,nrf52840,rp2040,rp2350,stm32
      r2_bucket: meshtastic-firmware-release
    steps:
      - name: Checkout
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Setup Python
        uses: actions/setup-python@v7.0.0
        with:
          python-version: 3.x

      - name: Get firmware artifacts
        uses: actions/download-artifact@v8
        with:
          pattern: firmware-{${{ env.targets }}}-${{ needs.version.outputs.long }}
          merge-multiple: true
          path: ./publish

      - name: Get manifest artifact
        uses: actions/download-artifact@v8
        with:
          pattern: manifest-${{ needs.version.outputs.long }}
          path: ./publish

      - name: Generate release notes
        run: |
          chmod +x ./bin/generate_release_notes.py
          ./bin/generate_release_notes.py ${{ needs.version.outputs.long }} --compare-ref HEAD > ./publish/release_notes.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Publish firmware to meshtastic.github.io
        uses: peaceiris/actions-gh-pages@v4
        env:
          # On event/* branches, use the event name as the destination prefix
          DEST_PREFIX: ${{ contains(github.ref_name, 'event/') && format('{0}/', github.ref_name) || '' }}
        with:
          deploy_key: ${{ secrets.DIST_PAGES_DEPLOY_KEY }}
          external_repository: meshtastic/meshtastic.github.io
          publish_branch: master
          publish_dir: ./publish
          destination_dir: ${{ env.DEST_PREFIX }}firmware-${{ needs.version.outputs.long }}
          keep_files: true
          user_name: github-actions[bot]
          user_email: github-actions[bot]@users.noreply.github.com
          commit_message: ${{ needs.version.outputs.long }}
          enable_jekyll: true

      # Mirror the same staged directory to Cloudflare R2, under a version prefix
      # at the bucket root. Additive (no --delete), matching keep_files:true
      # above: release_channels.yml later publishes an updated release_notes.md
      # into this same prefix, and a --delete sync on a re-run would remove it.
      - name: Publish firmware to Cloudflare R2
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
          # R2 is single-region; the S3 API still requires a region to be set.
          AWS_DEFAULT_REGION: auto
          # Cloudflare's documented aws-cli settings for R2. Left at the AWS
          # default, CLI >= 2.23 attaches CRC32 request checksums that R2 can
          # reject, so both of these must stay at when_required.
          AWS_REQUEST_CHECKSUM_CALCULATION: when_required
          AWS_RESPONSE_CHECKSUM_VALIDATION: when_required
          R2_ENDPOINT: https://${{ secrets.R2_ACCOUNT_ID }}.r2.cloudflarestorage.com
          # Same event/* prefixing as the github.io publish above.
          DEST_PREFIX: ${{ contains(github.ref_name, 'event/') && format('{0}/', github.ref_name) || '' }}
          VERSION: ${{ needs.version.outputs.long }}
        run: |
          set -euo pipefail
          aws --version
          # Cache for 1 day in browser, 1 month on CDN.
          aws s3 sync ./publish "s3://${r2_bucket}/${DEST_PREFIX}${VERSION}/" \
            --endpoint-url "$R2_ENDPOINT" \
            --no-progress \
            --metadata "commit=${{ github.sha }},run=${{ github.run_id }},version=${VERSION}" \
            --cache-control 'public, max-age=86400, s-maxage=2592000'

  # Nightly publish: refresh the root of the meshtastic-firmware-nightly R2
  # bucket with the current develop build. Runs on the cron schedule (or a manual
  # nightly=true dispatch) and never creates a GitHub release. The bucket's
  # release_notes.md is published from .github/nightly/ in this repo.
  publish-nightly:
    runs-on: ubuntu-24.04
    if: github.repository_owner == 'meshtastic' && (github.event_name == 'schedule' || github.event.inputs.nightly == 'true')
    needs: [setup, version, gather-artifacts]
    env:
      targets: |-
        esp32,esp32s3,esp32c3,esp32c6,nrf52840,rp2040,rp2350,stm32
      r2_bucket: meshtastic-firmware-nightly
    steps:
      # Only the index templates and release notes are needed here.
      - uses: actions/checkout@v7
        with:
          sparse-checkout: .github/nightly

      - name: Get firmware artifacts
        uses: actions/download-artifact@v8
        with:
          pattern: firmware-{${{ env.targets }}}-${{ needs.version.outputs.long }}
          merge-multiple: true
          path: ./stage

      - name: Generate Release manifest
        run: |
          jq -n --arg ver "${{ needs.version.outputs.long }}" --argjson targets ${{ toJson(needs.setup.outputs.all) }} '{
            "version": $ver,
            "targets": $targets
          }' > ./stage/firmware-${{ needs.version.outputs.long }}.json

      - name: Generate nightly pointer
        run: |
          jq -n \
            --arg ver "${{ needs.version.outputs.long }}" \
            --arg sha "${{ github.sha }}" \
            '{version: $ver, id: ("v" + $ver), title: ("Meshtastic Firmware " + $ver + " Nightly"), commit: $sha}' \
            > ./stage/index.json

      # The notes are maintained in-tree and published to the bucket root.
      - name: Stage the nightly release notes
        run: cp .github/nightly/release_notes.md ./stage/release_notes.md

      # For diagnostics
      - name: Display structure of files to publish
        run: ls -lR ./stage

      - name: Verify the staged nightly is not empty
        # The publish below refreshes the bucket in place (the R2 sync runs with
        # --delete), so an empty ./stage would clear the live nightly rather than
        # replace it. A failed or pattern-mismatched artifact download is the way
        # that happens, so fail closed here instead.
        run: |
          set -euo pipefail
          images=$(find ./stage -type f \
            \( -name 'firmware-*.bin' -o -name 'firmware-*.uf2' -o -name 'firmware-*.hex' \) | wc -l)
          echo "Staged firmware images: $images"
          if [ "$images" -eq 0 ]; then
            echo "::error::No firmware images in ./stage; refusing to publish an empty nightly."
            exit 1
          fi

      # tree renders the file listing; .github/nightly wraps it in the page
      # chrome. tree silently skips an --hintro/--houtro file it cannot open, so
      # the rendered page is checked for both markers below.
      - name: Generate nightly html index
        env:
          VERSION: ${{ needs.version.outputs.long }}
          COMMIT: ${{ github.sha }}
          RUN_ID: ${{ github.run_id }}
          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
        working-directory: ./stage
        run: |
          set -euo pipefail
          # Substitute placeholders in the nightly index header template.
          sed -e "s|%%VERSION%%|$VERSION|g" \
              -e "s|%%COMMIT%%|$COMMIT|g" \
              -e "s|%%COMMIT_SHORT%%|${COMMIT:0:7}|g" \
              -e "s|%%BUILD_DATE%%|$(date -u +'%Y-%m-%d %H:%M UTC')|g" \
              -e "s|%%RUN_ID%%|$RUN_ID|g" \
              -e "s|%%RUN_URL%%|$RUN_URL|g" \
              "$GITHUB_WORKSPACE/.github/nightly/hintro.html" > "$RUNNER_TEMP/hintro.html"
          # Render the html index using tree, with custom header and footer templates.
          tree -H "." -h --noreport -I "index.html" --charset utf-8 \
            --hintro "$RUNNER_TEMP/hintro.html" \
            --houtro "$GITHUB_WORKSPACE/.github/nightly/houtro.html" \
            > index.html

      # Mirror the staged directory to Cloudflare R2. --delete at the bucket root
      # clears stale nightly binaries, and is in scope for the whole bucket because
      # this bucket holds nothing but the nightly build.
      - name: Publish nightly to Cloudflare R2
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
          # R2 is single-region; the S3 API still requires a region to be set.
          AWS_DEFAULT_REGION: auto
          # Cloudflare's documented aws-cli settings for R2. Left at the AWS
          # default, CLI >= 2.23 attaches CRC32 request checksums that R2 can
          # reject, so both of these must stay at when_required.
          AWS_REQUEST_CHECKSUM_CALCULATION: when_required
          AWS_RESPONSE_CHECKSUM_VALIDATION: when_required
          R2_ENDPOINT: https://${{ secrets.R2_ACCOUNT_ID }}.r2.cloudflarestorage.com
        run: |
          set -euo pipefail
          aws --version
          # Cache for 1 hour in browser, 1 day on CDN.
          aws s3 sync ./stage "s3://${r2_bucket}/" \
            --endpoint-url "$R2_ENDPOINT" \
            --no-progress \
            --delete \
            --exclude 'index.json' \
            --exclude 'index.html' \
            --metadata "commit=${{ github.sha }},run=${{ github.run_id }}" \
            --cache-control 'public, max-age=3600, s-maxage=86400'
          # The indices point at whatever the current nightly is - index.json for
          # clients, index.html for browsers - so they are excluded from the sync
          # above and uploaded here with a 5 minute cache instead.
          for index in index.json index.html; do
            aws s3 cp "./stage/$index" "s3://${r2_bucket}/$index" \
              --endpoint-url "$R2_ENDPOINT" \
              --no-progress \
              --metadata "commit=${{ github.sha }},run=${{ github.run_id }}" \
              --cache-control 'public, max-age=300'
          done