name: Differential ShellCheck

on:
  workflow_dispatch:
  push:
    branches:
      - main
      - 'rc/**'
    paths:
      - 'build.sh'
      - 'install.sh'
      - 'forkop/files/etc/init.d/**'
      - 'luci-app-forkop/root/etc/uci-defaults/**'
      - 'tests/**/*.sh'
      - '.github/workflows/shellcheck.yml'
  pull_request:
    branches:
      - main
      - 'rc/**'
    paths:
      - 'build.sh'
      - 'install.sh'
      - 'forkop/files/etc/init.d/**'
      - 'luci-app-forkop/root/etc/uci-defaults/**'
      - 'tests/**/*.sh'
      - '.github/workflows/shellcheck.yml'

permissions:
  contents: read

jobs:
  shellcheck:
    name: Differential ShellCheck
    runs-on: ubuntu-24.04
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v5.0.0

      - name: Install ShellCheck
        run: |
          sudo apt-get update
          sudo apt-get install -y shellcheck

      - name: ShellCheck
        shell: bash
        run: |
          mapfile -d '' scripts < <(
            find . -type f \
              \( -name '*.sh' -o -path './build.sh' -o -path './install.sh' \
                 -o -path './forkop/files/etc/init.d/*' \
                 -o -path './luci-app-forkop/root/etc/uci-defaults/*' \) \
              -print0
          )
          shellcheck --severity=error "${scripts[@]}"