name: PR Size Check

on:
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  pr-size:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - uses: codelytv/pr-size-labeler@095a41fca88b8764fd9e008ad269bcdb82bb38b9 # v1
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          xs_label: "size/XS"
          xs_max_size: 25
          s_label: "size/S"
          s_max_size: 100
          m_label: "size/M"
          m_max_size: 250
          l_label: "size/L"
          l_max_size: 500
          xl_label: "size/XL"
          fail_if_xl: false
          files_to_ignore: |
            uv.lock
            *.lock
            lib/crewai/src/crewai/cli/templates/**
            **/*.json
            **/test_durations/**
            **/cassettes/**

  python-diff-size:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
        with:
          fetch-depth: 0
      - name: Enforce Python diff size limit
        env:
          MAX: "1500"
          BASE_SHA: ${{ github.event.pull_request.base.sha }}
          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
        run: |
          # Three-dot base...head == merge-base(base, head)..head: matches GitHub's
          # "Files changed" diff and ignores the synthetic merge commit at HEAD.
          # Sum added + deleted lines across changed .py files; skip binaries ("-").
          total=$(git diff --numstat "$BASE_SHA...$HEAD_SHA" -- '*.py' \
            | awk '$1 != "-" && $2 != "-" { sum += $1 + $2 } END { print sum + 0 }')
          echo "Python churn: $total lines (limit $MAX)"
          if [ "$total" -gt "$MAX" ]; then
            echo "::error::Python changes total $total lines, over the $MAX-line limit. Split into smaller PRs."
            git diff --numstat "$BASE_SHA...$HEAD_SHA" -- '*.py' | sort -rn
            exit 1
          fi