name: CI

on:
  pull_request:
    branches: [main]
  push:
    branches: [main]

permissions:
  contents: read

jobs:
  lint-commits:
    name: Lint commits
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request'
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Validate conventional commits
        run: |
          base="${{ github.event.pull_request.base.sha }}"
          head="${{ github.event.pull_request.head.sha }}"
          pattern='^(feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert)(\(.+\))?(!)?: .{1,}$'

          failed=0
          while IFS= read -r msg; do
            first_line=$(echo "$msg" | head -1)
            if ! echo "$first_line" | grep -qE "$pattern"; then
              echo "FAIL: $first_line"
              failed=1
            fi
          done < <(git log --format="%s" "$base".."$head")

          if [ "$failed" -eq 1 ]; then
            echo ""
            echo "Some commits do not follow Conventional Commits format."
            echo "Expected: <type>[scope][!]: <description>"
            echo "See: https://www.conventionalcommits.org/"
            exit 1
          fi
          echo "All commits follow Conventional Commits format."

  lint-scripts:
    name: Lint shell scripts
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Run ShellCheck
        run: shellcheck scripts/*.sh