name: Build test and release

on:
  push:
    branches:
      - main
    paths-ignore:
      - 'charts/**'
      - 'docs/**'
      - '.github/**'
      - 'README.md'
  pull_request:
    branches:
      - main
    paths-ignore:
      - 'charts/**'
      - 'docs/**'
      - '.github/**'
      - 'README.md'
  workflow_dispatch:

jobs:
  prepare:
    name: Preparing build context
    runs-on: ubuntu-latest
    outputs:
      SANITISED_REPOSITORY_NAME: ${{ steps.get_env.outputs.SANITISED_REPOSITORY_NAME }}
      DOCKER_IMAGE: ${{ steps.get_env.outputs.DOCKER_IMAGE }}
      GITHUB_COMMIT_NUMBER: ${{ steps.get_env.outputs.GITHUB_COMMIT_NUMBER }}
      GITHUB_SHA: ${{ steps.get_env.outputs.GITHUB_SHA }}
      DOCKER_IMAGE_SEMVER: ${{ steps.semver.outputs.semantic_version }}
      CHECK_IF_MASTER_BRANCH: ${{ steps.get_env.outputs.CHECK_FOR_MASTER_BRANCH }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
        with:
          fetch-depth: '0'
      - name: Configure git for private modules
        uses: extractions/netrc@v1
        with:
          machine: github.com
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}
      - name: Set environment variables
        id: get_env
        run: |
          TMP_SANITISED_REPOSITORY_NAME=$(echo ${{ github.event.repository.name }} | sed -e 's|\.|-|g')
          CHECK_FOR_MASTER_BRANCH="false"
          echo "SANITISED_REPOSITORY_NAME=$TMP_SANITISED_REPOSITORY_NAME" >> $GITHUB_OUTPUT
          echo "DOCKER_IMAGE=ghcr.io/${{ github.repository_owner }}/$TMP_SANITISED_REPOSITORY_NAME" >> $GITHUB_OUTPUT
          echo "GITHUB_COMMIT_NUMBER=$(git rev-list --count HEAD)" >> $GITHUB_OUTPUT
          echo "GITHUB_SHA=$(echo ${GITHUB_SHA::8})" >> $GITHUB_OUTPUT
          if [[ ${{ github.ref }} == 'refs/heads/master' || ${{ github.ref }} == 'refs/heads/main' ]]; then
            CHECK_FOR_MASTER_BRANCH="true"
          fi
          echo "CHECK_FOR_MASTER_BRANCH=$CHECK_FOR_MASTER_BRANCH" >> $GITHUB_OUTPUT
      - name: Establish semver
        id: semver
        uses: lukaszraczylo/semver-generator@v1
        with:
          config_file: semver.yaml
          repository_local: true
          github_username: ${{ github.actor }}
          github_token: ${{ secrets.GHCR_TOKEN }}
      - name: Semver check
        run: |
          echo "Semantic version detected: ${{ steps.semver.outputs.semantic_version }}"

  test:
    name: "Unit testing"
    needs: [prepare]
    runs-on: ubuntu-20.04
    # container: github/super-linter:v4
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Install Go
        uses: actions/setup-go@v3
        with:
          go-version: 1.21
      - name: Configure git for private modules
        uses: extractions/netrc@v1
        with:
          machine: github.com
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}
      - uses: actions/cache@v3
        with:
          path: |
            ~/.cache/go-build
            ~/go/pkg/mod
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
      - name: Run unit tests
        run: |
          make test

  build-docker:
    name: "Building docker image"
    needs: [ prepare, test ]
    runs-on: ubuntu-20.04
    if: needs.prepare.outputs.CHECK_IF_MASTER_BRANCH == 'true'
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Login to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}
      - uses: actions/cache@v3
        with:
          path: |
            ~/.cache/go-build
            ~/go/pkg/mod
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
      - name: Build and push
        if: github.event_name != 'pull_request' && ${{ needs.prepare.outputs.CHECK_FOR_MASTER_BRANCH == 'true' }}
        run: |
          make docker-buildx IMG=${{ needs.prepare.outputs.DOCKER_IMAGE }}:${{ needs.prepare.outputs.DOCKER_IMAGE_SEMVER }} IMG_SECONDARY_TAG=${{ needs.prepare.outputs.DOCKER_IMAGE }}:latest

  release:
    name: Create Release
    runs-on: ubuntu-latest
    needs: [ prepare, build-docker ]
    if: needs.prepare.outputs.CHECK_IF_MASTER_BRANCH == 'true'
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Get list of the commits since last release
        run: |
          echo "$(git log $(git describe --tags --abbrev=0)..HEAD --pretty=format:"%h %s")" > .release_notes
      - name: Create Release
        id: create_release
        if: needs.prepare.outputs.CHECK_IF_MASTER_BRANCH == 'true'
        uses: softprops/action-gh-release@v1
        with:
          name: v${{ needs.prepare.outputs.DOCKER_IMAGE_SEMVER }}
          body_path: .release_notes
          token: ${{ secrets.GHCR_TOKEN }}
          tag_name: v${{ needs.prepare.outputs.DOCKER_IMAGE_SEMVER }}
          prerelease: ${{ github.ref != 'refs/heads/master' && github.ref != 'refs/heads/main' }}