name: Version Bump

on:
  schedule:
    - cron: "0 8 * * *"  # daily 08:00 UTC
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: version-bump
  cancel-in-progress: false

jobs:
  bump:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
        with:
          ref: dev
          fetch-depth: 0

      - name: Install git-cliff
        uses: taiki-e/install-action@v2
        with:
          tool: git-cliff

      - name: Compute next version
        id: bump
        run: |
          CURRENT=$(grep -m1 '^version' pyproject.toml | sed 's/version = "\(.*\)"/\1/')
          NEXT=$(git cliff --bumped-version)
          echo "Current version: $CURRENT, bumped version: $NEXT"

          if [ "$NEXT" = "$CURRENT" ]; then
            echo "No releasable commits since $CURRENT, skipping"
            echo "skip=true" >> "$GITHUB_OUTPUT"
          else
            echo "skip=false" >> "$GITHUB_OUTPUT"
            echo "version=$NEXT" >> "$GITHUB_OUTPUT"
          fi

      - name: Update version files
        if: steps.bump.outputs.skip == 'false'
        run: |
          V=${{ steps.bump.outputs.version }}
          sed -i "s/^version = \".*\"/version = \"$V\"/" pyproject.toml
          sed -i "s/^__version__ = \".*\"/__version__ = \"$V\"/" unshackle/core/__init__.py

      - name: Install uv
        if: steps.bump.outputs.skip == 'false'
        uses: astral-sh/setup-uv@v4

      - name: Update uv.lock
        if: steps.bump.outputs.skip == 'false'
        run: uv lock

      - name: Prepend changelog entry
        if: steps.bump.outputs.skip == 'false'
        run: git cliff --unreleased --tag ${{ steps.bump.outputs.version }} --prepend CHANGELOG.md

      - name: Commit, tag, and push
        if: steps.bump.outputs.skip == 'false'
        run: |
          V=${{ steps.bump.outputs.version }}
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add pyproject.toml unshackle/core/__init__.py uv.lock CHANGELOG.md
          git commit -m "chore(release): bump version to $V"
          git tag "$V"
          git push origin dev "$V"