release.yml

name: Release

on:
  push:
    tags:
      - "*"
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    name: Build Release
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write

    strategy:
      matrix:
        go-version: [1.18.x]
        os: [ubuntu-latest]

    steps:
      - name: Set up Go
        uses: actions/setup-go@v2
        with:
          go-version: ${{ matrix.go-version }}

      - name: Check out code
        uses: actions/checkout@v3

      - name: Cache Go modules
        uses: actions/cache@v3
        with:
          # In order:
          # * Module download cache
          # * Build cache (Linux)
          # * Build cache (Mac)
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
            ~/Library/Caches/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Build target
        run: go build -o dummy-blockchain .

      - name: Upload Build
        uses: actions/upload-artifact@v2
        with:
          name: linux-x86_64-unknown-linux-gnu
          path: ./dummy-blockchain

  release:
    name: Release
    needs: [build]
    runs-on: ubuntu-latest

    permissions:
      contents: write
      packages: write

    steps:
      - name: Set Env
        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV

      - name: Checkout Code
        uses: actions/checkout@v3

      - name: Download All Artifacts
        id: download-artifacts
        uses: actions/download-artifact@v2
        with:
          path: ./binaries

      - name: Sanitize Downloaded Files
        run: |
          # We downloaded all the artifacts previously uploaded and we put them in
          # the 'binaries' folder. In this folder, the layout is:
          #
          #  binaries
          #  ├── linux-arm64-unknown-linux-gnu
          #  │   └── <binary>
          #  └── linux-x86_64-unknown-linux-gnu
          #      └── <binary>
          #
          # The sub-folder name comes from the 'name' field of the 'actions/upload-artifact@v2'
          # step. The '<binary>' file name is the filename of the uploaded 'path' field,
          # we used './target/release/<binary>' in the upload step so the file name here
          # is '<binary>'.

          download_path="${{steps.download-artifacts.outputs.download-path}}"
          chmod +x "${download_path}/linux-x86_64-unknown-linux-gnu/dummy-blockchain"
          mv "$download_path/linux-x86_64-unknown-linux-gnu/dummy-blockchain" "$download_path/dummy-blockchain-x86_64-unknown-linux-gnu"

      - name: Generate Change Log
        id: changelog
        if: ${{ startsWith(github.ref, 'refs/tags/') }}
        run: |
          chmod 755 ./.github/generate_change_log.sh
          CHANGELOG=$(./.github/generate_change_log.sh "${{ env.RELEASE_VERSION }}" "${{steps.download-artifacts.outputs.download-path}}")

          echo "CHANGELOG<<EOF" >> $GITHUB_ENV
          echo "$CHANGELOG" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Log in to the Container registry
        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Generate docker tags/labels from github build context
        id: meta
        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=tag
            type=sha,prefix=,enable=true
          flavor: |
            latest=${{ startsWith(github.ref, 'refs/tags/') }}

      - name: Build and push Docker image
        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
        with:
          context: ${{steps.download-artifacts.outputs.download-path}}
          file: ./Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Create Release
        uses: softprops/action-gh-release@v1
        if: ${{ startsWith(github.ref, 'refs/tags/') }}
        with:
          name: ${{ env.RELEASE_VERSION }}
          tag_name: ${{ env.RELEASE_VERSION }}
          draft: false
          prerelease: false
          body: ${{ env.CHANGELOG }}
          token: ${{ secrets.GITHUB_TOKEN }}
          fail_on_unmatched_files: true
          generate_release_notes: true
          files: |
            ${{steps.download-artifacts.outputs.download-path}}/*