name: Pull Request

on:
  pull_request_target:
    branches:
      - master

env:
  DOCKER_FILE_PATH: Dockerfile
  GOLANG_VERSION: 1.15.2
  KUBERNETES_VERSION: "1.18.0"
  KIND_VERSION: "0.7.0"

jobs:
  build:
    runs-on: ubuntu-latest 
    name: Build
    if: "! contains(toJSON(github.event.commits.*.message), '[skip-ci]')"    
    steps:
    - name: Check out code
      uses: actions/checkout@v2

    # Setting up helm binary
    - name: Set up Helm
      uses: azure/setup-helm@v1

    - name: Set up Go
      id: go
      uses: actions/setup-go@v2
      with:
        go-version: ${{ env.GOLANG_VERSION }}

    - name: Install Dependencies
      run: |
        make install

    - name: Lint
      run: |
        curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.26.0
        golangci-lint run --timeout=10m ./...

    - name: Install kubectl
      run: |
        curl -LO "https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl"
        sudo install ./kubectl /usr/local/bin/ && rm kubectl
        kubectl version --short --client
        kubectl version --short --client | grep -q ${KUBERNETES_VERSION}

    - name: Install Kind
      run: |
        curl -L -o kind https://github.com/kubernetes-sigs/kind/releases/download/v${KIND_VERSION}/kind-linux-amd64
        sudo install ./kind /usr/local/bin && rm kind
        kind version
        kind version | grep -q ${KIND_VERSION}

    - name: Create Kind Cluster
      run: |
        kind create cluster
        kubectl cluster-info
        
    - name: Test
      run: make test

    - name: Helm Lint
      run: |
        helm init
        cd deployments/kubernetes/chart/reloader
        helm lint

    - name: Generate Tag
      id: generate_tag
      run: |
        sha=${{ github.event.pull_request.head.sha }}
        tag="SNAPSHOT-PR-${{ github.event.pull_request.number }}-${sha:0:8}"
        echo "##[set-output name=GIT_TAG;]$(echo ${tag})"
    
    - name: Set up QEMU
      uses: docker/setup-qemu-action@v1

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v1

    - name: Login to Registry
      uses: docker/login-action@v1
      with:
        username: ${{ secrets.STAKATER_DOCKERHUB_USERNAME }}
        password: ${{ secrets.STAKATER_DOCKERHUB_PASSWORD }}

    - name: Generate image repository path
      run: |
        echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV

    - name: Build and Push Docker Image
      uses: docker/build-push-action@v2
      with:
        context: .
        file: ${{ env.DOCKER_FILE_PATH  }}
        pull: true
        push: true
        build-args: BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
        cache-to: type=inline
        tags: |
          ${{ env.IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}
        labels: |
          org.opencontainers.image.source=${{ github.event.repository.clone_url }}
          org.opencontainers.image.created=${{ steps.prep.outputs.created }}
          org.opencontainers.image.revision=${{ github.sha }}

    - name: Comment on PR
      uses: mshick/add-pr-comment@v1
      env:
       GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
      with:
        message: '@${{ github.actor }} Image is available for testing. `docker pull ${{ github.repository }}:${{ steps.generate_tag.outputs.GIT_TAG }}`'
        allow-repeats: false

    - name: Notify Failure
      if: failure()
      uses: mshick/add-pr-comment@v1
      env:
       GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
      with:
        message: '@${{ github.actor }} Yikes! You better fix it before anyone else finds out! [Build](https://github.com/${{ github.repository }}/commit/${{ github.event.pull_request.head.sha }}/checks) has Failed!'
        allow-repeats: false

    - name: Notify Slack
      uses: 8398a7/action-slack@v3
      if: always() # Pick up events even if the job fails or is canceled.
      with:
        status: ${{ job.status }}
        fields: repo,author,action,eventName,ref,workflow
      env:
        GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
        SLACK_WEBHOOK_URL: ${{ secrets.STAKATER_DELIVERY_SLACK_WEBHOOK }}