ci.yml

name: CI

on:
  pull_request:
    branches:
      - main
  push:
    branches:
      - main

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

jobs:
  pull-request:
    name: Pull request checks
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0

      - uses: pnpm/action-setup@v4
        with:
          version: 9.14.2

      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: '.nvmrc'
          cache: pnpm

      - run: pnpm install --frozen-lockfile

      - name: Get changed files
        id: changed
        run: |
          files=$(git diff --name-only --diff-filter=ACMR origin/main...HEAD | tr '\n' ' ')
          echo "files=$files" >> "$GITHUB_OUTPUT"

      - name: Get changed codemod package dirs
        id: codemods
        run: |
          roots=""
          for f in $(git diff --name-only origin/main...HEAD -- 'codemods/' || true); do
            [ -z "$f" ] && continue
            d=$(dirname "$f")
            while [ "$d" != "." ] && [ "$d" != "/" ]; do
              if [ -f "$d/package.json" ] && [[ "$d" == codemods/* ]]; then
                roots="${roots}"$'\n'"$d"
                break
              fi
              parent=$(dirname "$d")
              [ "$parent" = "$d" ] && break
              d=$parent
            done
          done
          dirs=$(printf '%s\n' "$roots" | sort -u | grep -v '^$' | tr '\n' ' ')
          echo "dirs=$dirs" >> "$GITHUB_OUTPUT"

      - name: Format check (changed files)
        if: steps.changed.outputs.files != ''
        run: pnpm run format:check ${{ steps.changed.outputs.files }}

      - name: Lint (changed files)
        if: steps.changed.outputs.files != ''
        run: pnpm run lint ${{ steps.changed.outputs.files }}

      - name: Markdown link check
        run: pnpm run docs:links

      - name: Test (changed codemods)
        if: steps.codemods.outputs.dirs != ''
        run: |
          for dir in ${{ steps.codemods.outputs.dirs }}; do
            (cd "$dir" && pnpm test)
          done

      - name: Typecheck (changed codemods)
        if: steps.codemods.outputs.dirs != ''
        run: |
          for dir in ${{ steps.codemods.outputs.dirs }}; do
            (cd "$dir" && pnpm run check-types)
          done

  push-verify:
    name: Full workspace (main)
    if: github.event_name == 'push'
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - uses: pnpm/action-setup@v4
        with:
          version: 9.14.2

      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: '.nvmrc'
          cache: pnpm

      - run: pnpm install --frozen-lockfile
      - run: pnpm run docs:links
      - run: pnpm run ci

  changeset-check:
    name: Changeset Check
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0

      - uses: pnpm/action-setup@v4
        with:
          version: 9.14.2

      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: '.nvmrc'
          cache: pnpm

      - run: pnpm install --frozen-lockfile

      - name: Check for changeset
        env:
          SKIP_LABEL: skip-changeset
          PR_LABELS: ${{ toJson(github.event.pull_request.labels.*.name) }}
        run: |
          changed_dirs=""
          for f in $(git diff --name-only --diff-filter=ACMR origin/main...HEAD -- 'codemods/' | grep -v '/tests/' || true); do
            [ -z "$f" ] && continue
            d=$(dirname "$f")
            while [ "$d" != "." ] && [ "$d" != "/" ]; do
              if [ -f "$d/package.json" ] && [[ "$d" == codemods/* ]]; then
                changed_dirs="${changed_dirs}"$'\n'"$d"
                break
              fi
              parent=$(dirname "$d")
              [ "$parent" = "$d" ] && break
              d=$parent
            done
          done
          # grep exits 1 when it filters down to zero lines; with `bash -e` that would
          # abort before we can treat "no codemod dirs" as success (changeset-only PRs).
          changed_dirs=$(printf '%s\n' "$changed_dirs" | sort -u | grep -v '^$' || true)

          if [ -z "$changed_dirs" ]; then
            echo "No codemod source files changed. Changeset not required."
            exit 0
          fi

          changed_packages=""
          for dir in $changed_dirs; do
            if [ -f "$dir/package.json" ]; then
              pkg=$(node -p "require('./$dir/package.json').name")
              changed_packages="$changed_packages $pkg"
            fi
          done
          changed_packages=$(echo "$changed_packages" | xargs)

          if [ -z "$changed_packages" ]; then
            echo "Changed directories have no package.json. Changeset not required."
            exit 0
          fi

          echo "Changed packages:"
          echo "$changed_packages" | tr ' ' '\n'

          if echo "$PR_LABELS" | grep -q "$SKIP_LABEL"; then
            echo "skip-changeset label found. Skipping changeset requirement."
            exit 0
          fi

          # Resolve the whole `.changeset/` tree; a quoted `*.md` pathspec is treated
          # literally on many Linux/Git combinations and matches nothing, producing
          # false "missing changeset" failures when codemods/ did change.
          changeset_files=$(git diff --name-only --diff-filter=ACMR origin/main...HEAD -- .changeset \
            | grep '\.md$' \
            | grep -v 'README.md' \
            || true)

          covered_packages=""
          for f in $changeset_files; do
            pkgs=$(sed -n '/^---$/,/^---$/{ /^---$/d; s/['\''`]//g; s/:.*//; p; }' "$f")
            covered_packages="$covered_packages $pkgs"
          done
          covered_packages=$(echo "$covered_packages" | xargs)

          missing=""
          for pkg in $changed_packages; do
            # Exact line match: `grep -w` is unreliable for hyphenated npm-style names on GNU grep.
            if ! printf '%s\n' $covered_packages | grep -Fxq "$pkg"; then
              missing="$missing $pkg"
            fi
          done
          missing=$(echo "$missing" | xargs)

          if [ -z "$missing" ]; then
            echo "All changed packages have changesets."
            exit 0
          fi

          echo "::error::Missing changeset for: $missing"
          echo ""
          echo "The following packages were changed but not covered by a changeset:"
          for pkg in $missing; do
            echo "  - $pkg"
          done
          echo ""
          echo "You have three options:"
          echo "  1. Run 'pnpm changeset' to add a changeset covering the missing packages"
          echo "  2. Add an empty changeset (no packages selected) if no version bump is needed"
          echo "  3. Add the 'skip-changeset' label to this PR"
          exit 1