---
name: Codegen drift
on:
  push:
    branches:
      - 'main'
      - '[0-9]+.[0-9]+'
    paths: &trigger-paths
      - '.github/workflows/codegen_drift.yml'
      - '.github/actions/codegen_drift/action.yml'
      - 'Justfile'
      # cfn sort order
      - 'tools/cfn_sorter.sh'
      - 'tools/cfn_sorter.cpp'
      - 'tools/copyright-header.txt'
      - 'radio/src/dataconstants.h'
      - 'radio/src/cfn_sort.cpp'
      # LVGL fonts
      - 'radio/src/fonts/**'
      # shared: the i18n headers feed both the fonts and the cfn sort order
      - 'radio/src/translations/i18n/**'
      # YAML parsers
      - 'tools/generate-yaml.sh'
      - 'tools/build-common.sh'
      - 'radio/src/myeeprom.h'
      - 'radio/src/datastructs.h'
      - 'radio/src/storage/yaml/**'
      - 'radio/util/generate_yaml.py'
      - 'radio/util/yaml_parser.tmpl'
      - 'radio/util/hw_defs/**'
      - 'radio/src/boards/hw_defs/**'
  pull_request:
    paths: *trigger-paths
  workflow_dispatch:

# These jobs only ever report - they must never block a contributor who does not
# have the local toolchain, so nothing here fails on drift.
permissions:
  contents: read
  pull-requests: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  JUST_VERSION: '1.57.0'

jobs:
  changes:
    name: Detect changed inputs
    runs-on: ubuntu-latest
    outputs:
      cfn: ${{ steps.filter.outputs.cfn }}
      fonts: ${{ steps.filter.outputs.fonts }}
      yaml: ${{ steps.filter.outputs.yaml }}
    steps:
      - name: Check out the repo
        uses: actions/checkout@v7

      - name: Install just
        run: |
          wget -qO- "https://github.com/casey/just/releases/download/${JUST_VERSION}/just-${JUST_VERSION}-x86_64-unknown-linux-musl.tar.gz" \
            | tar xz -C /usr/local/bin just

      # A Justfile change cannot cause drift, but it can rename a recipe out
      # from under the jobs below, so check they still resolve rather than
      # regenerating everything.
      - name: Check the recipes this workflow calls still resolve
        run: |
          just --list >/dev/null
          for recipe in cfn-sort gen-fonts gen-yaml; do
            just --show "${recipe}" >/dev/null
          done

      # Skipped on workflow_dispatch, which has no base revision to diff
      # against; the jobs below run unconditionally in that case.
      - name: Filter changed paths
        uses: dorny/paths-filter@v4
        id: filter
        if: github.event_name != 'workflow_dispatch'
        with:
          filters: |
            cfn:
              - '.github/workflows/codegen_drift.yml'
              - '.github/actions/codegen_drift/action.yml'
              - 'tools/cfn_sorter.sh'
              - 'tools/cfn_sorter.cpp'
              - 'tools/copyright-header.txt'
              - 'radio/src/dataconstants.h'
              - 'radio/src/cfn_sort.cpp'
              - 'radio/src/translations/i18n/**'
            fonts:
              - '.github/workflows/codegen_drift.yml'
              - '.github/actions/codegen_drift/action.yml'
              - 'radio/src/fonts/**'
              - 'radio/src/translations/i18n/**'
            yaml:
              - '.github/workflows/codegen_drift.yml'
              - '.github/actions/codegen_drift/action.yml'
              - 'tools/generate-yaml.sh'
              - 'tools/build-common.sh'
              - 'radio/src/myeeprom.h'
              - 'radio/src/datastructs.h'
              - 'radio/src/dataconstants.h'
              - 'radio/src/storage/yaml/**'
              - 'radio/util/generate_yaml.py'
              - 'radio/util/yaml_parser.tmpl'
              - 'radio/util/hw_defs/**'
              - 'radio/src/boards/hw_defs/**'

  cfn-sort:
    name: Custom function sort order
    needs: changes
    if: needs.changes.outputs.cfn == 'true' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    timeout-minutes: 15
    container:
      image: ghcr.io/edgetx/edgetx-dev:latest
      volumes:
        - ${{ github.workspace }}:/src
    steps:
      - name: Check out the repo
        uses: actions/checkout@v7
        with:
          submodules: recursive

      - name: Check for drift
        uses: ./.github/actions/codegen_drift
        with:
          just-version: ${{ env.JUST_VERSION }}
          recipe: cfn-sort
          paths: radio/src/cfn_sort.cpp
          label: Custom function sort order

  fonts:
    name: LVGL fonts
    needs: changes
    if: needs.changes.outputs.fonts == 'true' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    timeout-minutes: 30
    container:
      image: ghcr.io/edgetx/edgetx-dev:latest
      volumes:
        - ${{ github.workspace }}:/src
    steps:
      - name: Check out the repo
        uses: actions/checkout@v7
        with:
          submodules: recursive

      - name: Check for drift
        uses: ./.github/actions/codegen_drift
        with:
          just-version: ${{ env.JUST_VERSION }}
          recipe: gen-fonts
          paths: radio/src/fonts/lvgl
          label: LVGL fonts

  yaml:
    name: YAML parsers
    needs: changes
    if: needs.changes.outputs.yaml == 'true' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    timeout-minutes: 30
    container:
      image: ghcr.io/edgetx/edgetx-dev:latest
      volumes:
        - ${{ github.workspace }}:/src
    steps:
      - name: Check out the repo
        uses: actions/checkout@v7
        with:
          submodules: recursive

      - name: Check for drift
        uses: ./.github/actions/codegen_drift
        with:
          just-version: ${{ env.JUST_VERSION }}
          recipe: gen-yaml
          paths: radio/src/storage/yaml
          label: YAML parsers