ci.yml

# .github/workflows/ci.yml
name: CI (Auto-tag + Push Docker)

on:
  push:
    branches: [ "main" ]
  workflow_dispatch: {}

env:
  REGISTRY: docker.io
  IMAGE_NAME: ${{ secrets.DOCKERHUB_USERNAME }}/gabs-redis-langcache
  DOCKERFILE: ./Dockerfile

# Needed so GITHUB_TOKEN can create tags
permissions:
  contents: write

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    outputs:
      new_tag: ${{ steps.bump.outputs.new_tag }}
    steps:
      - name: Checkout (full history)
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Determine version bump from commit message
        id: bump
        shell: bash
        run: |
          set -e

          # Get the last tag
          LAST=$(git tag -l 'v*.*.*' --sort=-v:refname | head -n1)
          [ -z "$LAST" ] && LAST="v0.0.0"

          # Parse version
          VER=${LAST#v}
          IFS='.' read -r MAJOR MINOR PATCH <<<"$VER"

          # Get commit message
          COMMIT_MSG="${{ github.event.head_commit.message }}"
          echo "Commit message: $COMMIT_MSG"

          # Determine bump type from conventional commit
          if echo "$COMMIT_MSG" | grep -qiE '^(feat|feature)(\(.*\))?!:|^BREAKING CHANGE:'; then
            # Breaking change -> major bump
            MAJOR=$((MAJOR+1))
            MINOR=0
            PATCH=0
            BUMP_TYPE="major"
          elif echo "$COMMIT_MSG" | grep -qiE '^(feat|feature)(\(.*\))?:'; then
            # Feature -> minor bump
            MINOR=$((MINOR+1))
            PATCH=0
            BUMP_TYPE="minor"
          else
            # Everything else (fix, chore, docs, etc.) -> patch bump
            PATCH=$((PATCH+1))
            BUMP_TYPE="patch"
          fi

          NEW_TAG="v$MAJOR.$MINOR.$PATCH"
          echo "Last tag: $LAST"
          echo "Bump type: $BUMP_TYPE"
          echo "New tag: $NEW_TAG"

          # Export for next steps
          echo "new_tag=$NEW_TAG" >> $GITHUB_OUTPUT
          echo "version=$MAJOR.$MINOR.$PATCH" >> $GITHUB_OUTPUT
          echo "bump_type=$BUMP_TYPE" >> $GITHUB_OUTPUT

      - name: Create and push tag
        shell: bash
        run: |
          git config user.name  "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          git tag -a "${{ steps.bump.outputs.new_tag }}" -m "release ${{ steps.bump.outputs.new_tag }} (${{ steps.bump.outputs.bump_type }} bump)"
          git push origin "${{ steps.bump.outputs.new_tag }}"

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build & Push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ${{ env.DOCKERFILE }}
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.bump.outputs.version }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          labels: |
            org.opencontainers.image.title=${{ github.event.repository.name }}
            org.opencontainers.image.source=${{ github.repository }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.version=${{ steps.bump.outputs.version }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          provenance: false

      - name: Summary
        run: |
          echo "## 🚀 Release Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "- **Version**: ${{ steps.bump.outputs.new_tag }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Bump Type**: ${{ steps.bump.outputs.bump_type }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Docker Image**: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.bump.outputs.version }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Commit**: ${{ github.sha }}" >> $GITHUB_STEP_SUMMARY