name: Publish Package

on:
  push:
    branches:
      - 1.x
  workflow_dispatch:

jobs:
  verify_version:
    runs-on: ubuntu-latest
    outputs:
      should_publish: ${{ steps.check.outputs.should_publish }}
      version: ${{ steps.check.outputs.version }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Check if typescript/package.json version changed
        id: check
        run: |
          echo "Current branch: ${{ github.ref }}"

          # npm release version lives in the package we publish (typescript/)
          CURRENT_VERSION=$(jq -r .version typescript/package.json)
          echo "Current version: $CURRENT_VERSION"

          # Use the push event's base SHA so version bumps in multi-commit
          # pushes are still detected (HEAD~1 only checks the last commit).
          # Fall back to the root commit for workflow_dispatch or when the
          # base is 0000... (branch created in this push).
          BASE_COMMIT="${{ github.event.before }}"
          if [ -z "$BASE_COMMIT" ] \
              || [ "$BASE_COMMIT" = "0000000000000000000000000000000000000000" ] \
              || ! git cat-file -e "$BASE_COMMIT^{commit}" 2>/dev/null; then
            BASE_COMMIT=$(git rev-parse HEAD~1 2>/dev/null || git rev-list --max-parents=0 HEAD | tail -n1)
          fi
          echo "Base commit: $BASE_COMMIT"

          # Only typescript/ is published by this workflow
          if git diff --name-only "$BASE_COMMIT" HEAD -- typescript/package.json | grep -q .; then
            echo "typescript/package.json was changed in this push"

            if git show "$BASE_COMMIT:typescript/package.json" 2>/dev/null | jq -e .version >/dev/null 2>&1; then
              PREV_VERSION=$(git show "$BASE_COMMIT:typescript/package.json" | jq -r .version)
              echo "Previous version: $PREV_VERSION"

              if [ "$CURRENT_VERSION" != "$PREV_VERSION" ]; then
                echo "Version changed from $PREV_VERSION to $CURRENT_VERSION"
                echo "should_publish=true" >> $GITHUB_OUTPUT
              else
                echo "Version unchanged"
                echo "should_publish=false" >> $GITHUB_OUTPUT
              fi
            else
              echo "No prior typescript/package.json; will publish"
              echo "should_publish=true" >> $GITHUB_OUTPUT
            fi
          else
            echo "typescript/package.json not changed in this push"
            echo "should_publish=false" >> $GITHUB_OUTPUT
          fi

          echo "version=$CURRENT_VERSION" >> $GITHUB_OUTPUT

  publish:
    needs: verify_version
    if: needs.verify_version.outputs.should_publish == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Create Git tag
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag -a "v${{ needs.verify_version.outputs.version }}" -m "Release v${{ needs.verify_version.outputs.version }}"
          git push origin "v${{ needs.verify_version.outputs.version }}"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2

      - name: Install dependencies
        run: cd typescript && bun install

      - name: Build package
        run: cd typescript && bun run build

      - name: Publish to npm
        run: cd typescript && bun publish
        env:
          NPM_CONFIG_TOKEN: ${{ secrets.NPM_TOKEN }}

  create_release:
    needs: [verify_version, publish]
    if: needs.verify_version.outputs.should_publish == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Create GitHub Release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: "v${{ needs.verify_version.outputs.version }}"
          release_name: "v${{ needs.verify_version.outputs.version }}"
          body: "Release v${{ needs.verify_version.outputs.version }}"
          draft: false
          prerelease: false