publish.yml

name: Publishing

on:
  push:
    branches:
      - main
  workflow_dispatch:
    inputs:
      source_branch:
        description: 'Source branch'
        required: true
        default: 'main'

permissions:
  contents: write
  packages: write

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.source_branch || github.ref }}
          submodules: recursive

      - name: Check if should be published
        if: ${{ github.event_name != 'workflow_dispatch' && !contains(github.event.head_commit.message, '[pub]') }}
        run: |
          echo "[pub] string is missing in commit message, skipping ..."
          exit 0

      - name: Publish
        id: pub
        if: ${{ github.event_name == 'workflow_dispatch' || contains(github.event.head_commit.message, '[pub]') }}
        run: |
          CGO_ENABLED=0 \
          go build -trimpath -ldflags="-s -w" -o main
          if ldd main 2>&1 | grep -vq "not a dynamic executable"; then
            echo "ERROR: binary is dynamically linked"
            ldd main || true
            exit 1
          fi
          CGO_ENABLED=0 GOOS=windows GOARCH=amd64 \
          go build -trimpath -ldflags="-s -w" -o main.exe
          echo "exists=true" >> $GITHUB_OUTPUT

      - name: Create tag
        id: newtag
        if: steps.pub.outputs.exists == 'true'
        run: |
          echo "::group::Version overview"
          VERSION=$(awk '/^## /{print $2; exit}' CHANGELOG.md)
          BODY=$(awk '/^## /{if (seen++) exit} seen' CHANGELOG.md | tail -n +2)
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "body<<EOF" >> $GITHUB_OUTPUT
          echo "$BODY" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT
          echo "::endgroup::"
          
          TAG="$VERSION"

          echo "::group::New tag created"
          echo "tag=$TAG" >> $GITHUB_OUTPUT
          git tag $TAG
          git push origin $TAG || true
          echo "::endgroup::"
                    
      - name: Create release
        id: crelease
        if: steps.pub.outputs.exists == 'true'
        uses: actions/create-release@v1
        with:
          tag_name: ${{ steps.newtag.outputs.version }}
          release_name: ${{ steps.newtag.outputs.version }}
          body: ${{ steps.newtag.outputs.body }}
        env:
          GITHUB_TOKEN: ${{ secrets._TOKEN }}

      - name: Upload asset
        if: steps.pub.outputs.exists == 'true'
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets._TOKEN }}
        with:
          upload_url: ${{ steps.crelease.outputs.upload_url }}
          asset_path: ./main
          asset_name: main
          asset_content_type: application/octet-stream
      - name: Upload asset Win
        if: steps.pub.outputs.exists == 'true'
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets._TOKEN }}
        with:
          upload_url: ${{ steps.crelease.outputs.upload_url }}
          asset_path: ./main.exe
          asset_name: main.exe
          asset_content_type: application/octet-stream

      - name: Set up Docker Buildx
        if: steps.pub.outputs.exists == 'true'
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        if: steps.pub.outputs.exists == 'true'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Normalize repository owner
        if: steps.pub.outputs.exists == 'true'
        id: normalize
        run: |
          echo "owner_lc=${GITHUB_REPOSITORY_OWNER,,}" >> "$GITHUB_OUTPUT"

      - name: Build and push Docker image
        if: steps.pub.outputs.exists == 'true'
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          platforms: linux/amd64
          tags: |
            ghcr.io/${{ steps.normalize.outputs.owner_lc }}/minihttpserver:latest
            ghcr.io/${{ steps.normalize.outputs.owner_lc }}/minihttpserver:${{ steps.newtag.outputs.version }}
          build-args: |
            PACKAGE_TAG=${{ steps.newtag.outputs.version }}