name: Check for bashisms

on:
  pull_request:
    paths:
      - core/tabs/**
  merge_group:
  workflow_dispatch:

jobs:
  check-bashisms:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      - run: git fetch origin ${{ github.base_ref }}

      - name: Get a list of changed script files
        id: get_sh_files
        run: |
          sh_files=$(git diff --name-only origin/${{ github.base_ref }} HEAD core/tabs | grep '\.sh$' || true)
          if [ -n "$sh_files" ]; then
            echo "$sh_files" > changed_files
            echo "changed=1" >> $GITHUB_OUTPUT
          else
            echo "changed=0" >> $GITHUB_OUTPUT
          fi
      
      - name: Install devscripts
        if: steps.get_sh_files.outputs.changed == 1
        run: sudo apt-get update && sudo apt-get install devscripts

      - name: Check for bashisms
        if: steps.get_sh_files.outputs.changed == 1
        run: |
          echo "Running for:\n$(cat changed_files)\n"
          for file in $(cat changed_files); do
            if [[ -f "$file" ]]; then
              checkbashisms "$file"
            fi
          done

      - name: Remove the created file
        if: steps.get_sh_files.outputs.changed == 1
        run: rm changed_files