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path: root/.github/workflows/forms-backend.yml
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name: Forms Backend

on:
  push:
    branches: 
      - main
  pull_request:

jobs:
  lint:
    name: Linting
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Setup Python
        id: python
        uses: actions/setup-python@v2
        with:
          python-version: '3.9'
      
      - name: Setup Poetry
        uses: snok/[email protected]
        with:
          virtualenvs-create: true
          virtualenvs-in-project: true

      # When same context exists in cache already, restore this environment.
      - name: Poetry Environment Caching
        uses: actions/cache@v2
        id: python_cache
        with:
          path: .venv
          key: "venv-${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}"

      # Only install dependencies when cache didn't hit.
      - name: Install dependencies
        if: steps.python_cache.outputs.cache-hit != 'true'
        run: |
          poetry install

      # This allows GitHub to detect errors and relay them to PR Files tab
      - name: Add flake8 matchers
        run: echo "::add-matcher::./.github/flake8-matchers.json"

      - name: Run flake8
        run: "poetry run flake8"

      # We don't want that this catch any other errors than flake8 ones.
      - name: Remove flake8 matchers
        if: ${{ always() }}
        run: echo "::remove-matcher owner=flake8-error::" && echo "::remove-matcher owner=flake8-warning::"

  build:
    name: Build & Push
    runs-on: ubuntu-latest

    needs: [lint]
    if: github.ref == 'refs/heads/main' && github.event_name == 'push'

    steps:
      - name: Create SHA Container Tag
        id: sha_tag
        run: |
          tag=$(cut -c 1-7 <<< $GITHUB_SHA)
          echo "::set-output name=tag::$tag"

      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Setup Docker BuildX
        uses: docker/setup-buildx-action@v1

      - name: Login to Github Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ secrets.GHCR_USER }}
          password: ${{ secrets.GHCR_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          file: ./Dockerfile
          push: true
          cache-from: type=registry,ref=ghcr.io/python-discord/forms-backend:latest
          cache-to: type=inline
          tags: |
            ghcr.io/python-discord/forms-backend:latest
            ghcr.io/python-discord/forms-backend:${{ steps.sha_tag.outputs.tag }}

  deploy:
    name: Deployment
    runs-on: ubuntu-latest

    needs: [build]
    if: github.ref == 'refs/heads/main'

    steps:
      - name: Create SHA Container Tag
        id: sha_tag
        run: |
          tag=$(cut -c 1-7 <<< $GITHUB_SHA)
          echo "::set-output name=tag::$tag"

      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Authenticate with Kubernetes
        uses: azure/k8s-set-context@v1
        with:
          method: kubeconfig
          kubeconfig: ${{ secrets.KUBECONFIG }}

      - name: Deploy to Kubernetes
        uses: Azure/k8s-deploy@v1
        with:
          manifest: |
            deployment.yaml
          images: 'ghcr.io/python-discord/forms-backend:${{ steps.sha_tag.outputs.tag }}'
          kubectl-version: 'latest'