version.yml

name: Version Bump

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  version:
    # Skip version-bump merges to avoid infinite loops
    if: github.actor != 'github-actions[bot]'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0

      - uses: actions/setup-node@v4
        with:
          node-version: 22

      - run: npm ci

      - name: Determine next version
        id: next
        run: |
          CURRENT=$(node -p "require('./package.json').version")
          echo "current=$CURRENT"

          # Run semantic-release dry-run and capture output
          OUTPUT=$(npx semantic-release --dry-run 2>&1) || true
          echo "$OUTPUT"

          # Extract the next version from dry-run output
          # semantic-release prints lines like:
          #   "The next release version is X.Y.Z"
          #   "Published release X.Y.Z"
          NEXT=$(echo "$OUTPUT" | grep -oP '(?:next release version is |Published release )\K[0-9]+\.[0-9]+\.[0-9]+' | head -1 || true)

          if [ -z "$NEXT" ] || [ "$NEXT" = "$CURRENT" ]; then
            echo "No version bump needed"
            echo "bump=false" >> "$GITHUB_OUTPUT"
          else
            echo "Version bump: $CURRENT -> $NEXT"
            echo "bump=true" >> "$GITHUB_OUTPUT"
            echo "next=$NEXT" >> "$GITHUB_OUTPUT"
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Check for existing PR
        if: steps.next.outputs.bump == 'true'
        id: existing
        run: |
          BRANCH="release/v${{ steps.next.outputs.next }}"
          PR=$(gh pr list --head "$BRANCH" --state open --json number --jq '.[0].number' || true)
          if [ -n "$PR" ]; then
            echo "PR #$PR already exists for $BRANCH"
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Create version bump PR
        if: steps.next.outputs.bump == 'true' && steps.existing.outputs.exists != 'true'
        run: |
          VERSION="${{ steps.next.outputs.next }}"
          BRANCH="release/v${VERSION}"

          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

          git checkout -b "$BRANCH"

          npm version "$VERSION" --no-git-tag-version
          npm install --package-lock-only

          git add package.json package-lock.json
          git commit -m "chore(release): bump version to ${VERSION}"
          git pull --rebase origin "$BRANCH" || true
          git push origin "$BRANCH"

          gh pr create \
            --title "chore(release): v${VERSION}" \
            --body "Automated version bump to \`${VERSION}\` based on conventional commits since the last release." \
            --base main \
            --head "$BRANCH"
        env:
          GH_TOKEN: ${{ github.token }}