Shared Tag Release

name: Shared - Tag Release

on:
  workflow_call:
    inputs:
      tag_prefix:
        description: 'Prefix for version tags'
        required: false
        type: string
        default: 'v'
      major_pattern:
        description: 'Regex pattern for major version bump'
        required: false
        type: string
        default: '(MAJOR|BREAKING CHANGE)'
      minor_pattern:
        description: 'Regex pattern for minor version bump'
        required: false
        type: string
        default: '(feat)'

    outputs:
      version:
        description: 'Semantic version (e.g. 1.2.3)'
        value: ${{ jobs.tag.outputs.version }}
      version_tag:
        description: 'Version tag (e.g. v1.2.3)'
        value: ${{ jobs.tag.outputs.version_tag }}

jobs:
  tag:
    name: Tag Release
    runs-on: ubuntu-latest
    timeout-minutes: 10

    outputs:
      version: ${{ steps.semver.outputs.version }}
      version_tag: ${{ steps.semver.outputs.version_tag }}

    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Calculate semantic version
        id: semver
        uses: PaulHatch/semantic-version@v5.4.0
        with:
          tag_prefix: ${{ inputs.tag_prefix }}
          major_pattern: ${{ inputs.major_pattern }}
          minor_pattern: ${{ inputs.minor_pattern }}
          format: "${major}.${minor}.${patch}"
          namespace: ""
          change_path: ""
          bump_each_commit: false

      - name: Check if tag exists
        id: check-tag
        run: |
          TAG="${{ inputs.tag_prefix }}${{ steps.semver.outputs.version }}"
          if git rev-parse "$TAG" >/dev/null 2>&1; then
            echo "exists=true" >> $GITHUB_OUTPUT
            echo "Tag $TAG already exists, skipping"
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

      - name: Create and push tag
        if: steps.check-tag.outputs.exists == 'false'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="${{ inputs.tag_prefix }}${{ steps.semver.outputs.version }}"

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

          git tag -a "$TAG" -m "Release $TAG"
          git push origin "$TAG"

          echo "### Tag Created: $TAG" >> $GITHUB_STEP_SUMMARY

      - name: Create GitHub Release
        if: steps.check-tag.outputs.exists == 'false'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          TAG="${{ inputs.tag_prefix }}${{ steps.semver.outputs.version }}"

          # Generate changelog from previous tag
          if git describe --tags --abbrev=0 HEAD^ >/dev/null 2>&1; then
            PREV_TAG="$(git describe --tags --abbrev=0 HEAD^)"
            CHANGELOG=$(git log --pretty=format:'- %s (%h)' "${PREV_TAG}..HEAD~1" | head -30)
          else
            CHANGELOG=$(git log --pretty=format:'- %s (%h)' | head -30)
          fi

          gh release create "$TAG" \
            --title "Release $TAG" \
            --notes "## Changes

          ${CHANGELOG}" \
            --latest