name: Changeset Status

on:
  pull_request:
    types:
      - opened
      - reopened
      - synchronize
      - labeled
      - unlabeled
      - ready_for_review

permissions:
  contents: read

jobs:
  changeset-status:
    if: ${{ !github.event.pull_request.draft }}
    runs-on: ubuntu-latest
    env:
      BASE_REF: ${{ github.event.pull_request.base.ref }}
      PR_LABELS: ${{ join(github.event.pull_request.labels.*.name, ',') }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup pnpm
        uses: pnpm/action-setup@v4
        with:
          version: 10.25.0

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 24
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Require a changeset for releasable package changes
        shell: bash
        run: |
          set -euo pipefail

          if [[ ",${PR_LABELS}," == *",no-changeset-needed,"* ]]; then
            echo "Skipping changeset requirement because the PR is labeled no-changeset-needed."
            exit 0
          fi

          changed_files="$(git diff --name-only "origin/${BASE_REF}...HEAD")"

          if [[ -z "${changed_files}" ]]; then
            echo "No changed files detected."
            exit 0
          fi

          echo "Changed files:"
          printf '%s\n' "${changed_files}"

          needs_changeset=false
          has_changeset=false

          while IFS= read -r file; do
            [[ -z "${file}" ]] && continue

            case "${file}" in
              .changeset/*.md)
                if [[ "${file}" != ".changeset/README.md" ]]; then
                  has_changeset=true
                fi
                ;;
              packages/tokens/*)
                needs_changeset=true
                ;;
              packages/ui/package.json)
                needs_changeset=true
                ;;
              packages/ui/src/test/*|packages/ui/src/**/*.test.ts|packages/ui/src/**/*.test.tsx)
                ;;
              packages/ui/src/*)
                needs_changeset=true
                ;;
            esac
          done <<< "${changed_files}"

          if [[ "${needs_changeset}" != "true" ]]; then
            echo "No releasable package changes detected."
            exit 0
          fi

          if [[ "${has_changeset}" != "true" ]]; then
            echo "::error::Changes to @ai-ui/ui or @ai-ui/tokens require a changeset file under .changeset/."
            echo "::error::If this PR is intentionally docs-only, test-only, or otherwise non-releasable, apply the no-changeset-needed label."
            exit 1
          fi

      - name: Validate pending changesets
        run: pnpm changeset:status --since "origin/${BASE_REF}"

      - name: Validate registry metadata
        run: pnpm registry:check

      - name: Run registry consumer smoke test
        run: pnpm test:registry:consumer

      - name: Run package consumer smoke test
        run: pnpm test:package:consumer