name: Publish to NPM

# This workflow handles all publishing to npm for releases and pre-release nightly
# builds. We must use a single file rather than separate workflow files because
# Trusted Publishing currently supports only a single workflow file.

on:
  release:
    types: [published]
  schedule:
    - cron: '0 2 * * *'  # Nightly at 02:00 UTC
  workflow_dispatch:
    inputs:
      publish_type:
        description: 'Type of publish'
        required: true
        type: choice
        options:
          - release
          - master-nightly
          - minor-nightly

jobs:
  # Determine which publish type(s) to run based on trigger
  setup:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - name: Determine publish matrix
        id: set-matrix
        run: |
          if [ "${{ github.event_name }}" == "release" ]; then
            echo 'matrix=["release"]' >> $GITHUB_OUTPUT
          elif [ "${{ github.event_name }}" == "schedule" ]; then
            echo 'matrix=["master-nightly", "minor-nightly"]' >> $GITHUB_OUTPUT
          else
            echo 'matrix=["${{ inputs.publish_type }}"]' >> $GITHUB_OUTPUT
          fi

  publish:
    needs: setup
    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write
    strategy:
      fail-fast: false
      matrix:
        type: ${{ fromJson(needs.setup.outputs.matrix) }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ matrix.type == 'minor-nightly' && 'minor' || matrix.type == 'master-nightly' && 'master' || '' }}
          fetch-depth: ${{ matrix.type == 'release' && 1 || 0 }}

      # For nightly builds: check if there were commits in the last 24 hours
      - name: Check for new commits
        id: commit_check
        if: matrix.type != 'release'
        run: |
          COMMITS=$(git rev-list --count --since="24 hours" HEAD)
          echo "Commits found: $COMMITS"
          if [ "$COMMITS" -eq 0 ]; then
            echo "should_publish=false" >> $GITHUB_OUTPUT
          else
            echo "should_publish=true" >> $GITHUB_OUTPUT
          fi

      - name: Setup Node.js
        if: matrix.type == 'release' || steps.commit_check.outputs.should_publish == 'true'
        uses: actions/setup-node@v6
        with:
          node-version: '24.x'
          registry-url: 'https://registry.npmjs.org'

      - name: Update npm
        if: matrix.type == 'release' || steps.commit_check.outputs.should_publish == 'true'
        run: npm install -g npm@latest

      - name: Install dependencies
        if: matrix.type == 'release' || steps.commit_check.outputs.should_publish == 'true'
        run: npm install --no-save

      - name: Build
        if: matrix.type == 'release' || steps.commit_check.outputs.should_publish == 'true'
        run: npm run build

      # Nightly builds: configure git and bump version
      - name: Configure Git
        if: matrix.type != 'release' && steps.commit_check.outputs.should_publish == 'true'
        run: |
          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --global user.name "github-actions[bot]"

      - name: Get current date
        if: matrix.type != 'release' && steps.commit_check.outputs.should_publish == 'true'
        id: date
        run: echo "date=$(date +'%Y%m%d%H%M')" >> $GITHUB_OUTPUT

      - name: Version packages (master-nightly)
        if: matrix.type == 'master-nightly' && steps.commit_check.outputs.should_publish == 'true'
        run: |
          CURRENT_VERSION=$(node -p "require('./lerna.json').version")
          IFS='.' read -r -a VERSION_PARTS <<< "$CURRENT_VERSION"
          PATCH=$((VERSION_PARTS[2] + 1))
          NEW_VERSION="${VERSION_PARTS[0]}.${VERSION_PARTS[1]}.${PATCH}-master-${{ steps.date.outputs.date }}"
          npx lerna version $NEW_VERSION --no-git-tag-version --yes --no-push --force-publish

      - name: Version packages (minor-nightly)
        if: matrix.type == 'minor-nightly' && steps.commit_check.outputs.should_publish == 'true'
        run: |
          CURRENT_VERSION=$(node -p "require('./lerna.json').version")
          IFS='.' read -r -a VERSION_PARTS <<< "$CURRENT_VERSION"
          MINOR=$((VERSION_PARTS[1] + 1))
          NEW_VERSION="${VERSION_PARTS[0]}.${MINOR}.0-minor-${{ steps.date.outputs.date }}"
          npx lerna version $NEW_VERSION --no-git-tag-version --yes --no-push --force-publish

      - name: Commit version changes
        if: matrix.type != 'release' && steps.commit_check.outputs.should_publish == 'true'
        run: |
          git add .
          git commit -m "chore: Bump version for ${{ matrix.type }} pre-release"

      # Publish to npm with appropriate dist-tag
      # Note: we do not use `lerna publish` because at the time of writing, it fails to publish
      # using the Trusted Publishing workflow for some reason.
      - name: Publish to NPM (release)
        if: matrix.type == 'release'
        run: npx lerna exec --no-private -- npm publish --access public

      - name: Publish to NPM (master-nightly)
        if: matrix.type == 'master-nightly' && steps.commit_check.outputs.should_publish == 'true'
        run: npx lerna exec --no-private -- npm publish --access public --tag master

      - name: Publish to NPM (minor-nightly)
        if: matrix.type == 'minor-nightly' && steps.commit_check.outputs.should_publish == 'true'
        run: npx lerna exec --no-private -- npm publish --dd --access public --tag minor

      - name: Skip publish (no new commits)
        if: matrix.type != 'release' && steps.commit_check.outputs.should_publish == 'false'
        run: echo "No new commits in last 24 hours – skipping ${{ matrix.type }} publish."