Model/.github/workflows/deploy_fastapi_backend.yml

name: Fast Api Backend Deploy

on:
  push:
    branches: [ dev, prod ]

jobs:
  deploy:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.10.12

      - name: Install Serverless and plugins
        run: |
          npm install -g serverless
          npm install -g serverless-python-requirements
          npm install -g serverless-domain-manager

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          cd backend && pip install -r requirements/base.txt

      - name: AWS credentials for dev
        if: github.ref == 'refs/heads/dev'
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.DEV_AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.DEV_AWS_SECRET_ACCESS_KEY }}
          aws-region: eu-west-2

      - name: AWS credentials for prod
        if: github.ref == 'refs/heads/prod'
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.PROD_AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.PROD_AWS_SECRET_ACCESS_KEY }}
          aws-region: eu-west-2

      - name: Set domain name
        id: set_domain
        run: echo "::set-output name=domain::${{ secrets[format('{0}_DOMAIN_NAME', github.ref_name)] }}"

      - name: Build Lambda Layer
        run: |
          cd backend
          pip install -r requirements/lambda.txt -t python
          zip -r layer.zip python

      - name: Publish Lambda Layer
        run: |
          LAYER_ARN=$(aws lambda publish-layer-version --layer-name LambdaDependenciesLayer --zip-file fileb://layer.zip | jq -r '.LayerVersionArn')
          aws ssm put-parameter --name "/${{ github.ref_name }}/LambdaDependenciesLayerArn" --value "$LAYER_ARN" --type String --overwrite

      - name: Deploy to AWS Lambda via Serverless
        env:
          API_KEY: ${{ secrets.FASTAPI_API_KEY }}
          ENVIRONMENT: ${{ github.ref_name }}
          SECRET_KEY: ${{ secrets.NEXTAUTH_SECRET }}
          PLAN_TRIGGER_BUCKET: 'retrofit-plan-inputs-${{ github.ref_name }}'
          DOMAIN_NAME: ${{ steps.set_domain.outputs.domain }}
        run: cd backend && sls deploy --stage ${{ github.ref_name }} --verbose