deploy-staging.yml

name: deploy-staging-and-create-release

concurrency:
  group: deploy-staging
  cancel-in-progress: true

on:
  push:
    branches:
      - main

permissions:
  id-token: write # required for OIDC connectiong to AWS
  contents: write # This is required to create a release

jobs:
  detect-changes:
    runs-on: ubuntu-latest
    environment: staging
    outputs:
      deploy-iac: ${{ steps.check.outputs.deploy-iac }}
      deploy-backend: ${{ steps.check.outputs.deploy-backend }}
      deploy-frontend: ${{ steps.check.outputs.deploy-frontend }}
    steps:
      - uses: actions/checkout@v4

      - uses: dorny/paths-filter@v3
        id: check
        with:
          filters: |
            deploy-iac:
              - 'tofu/modules/**'
              - 'tofu/environments/stage/**'
              - '.github/workflows/deploy-staging.yml'
            deploy-backend:
              - 'backend/**'
              - 'tofu/modules/services/backend-service/**'
              - 'tofu/environments/stage/services/backend-service/**'
              - '.github/workflows/deploy-staging.yml'
            deploy-frontend:
              - 'frontend/**'
              - 'tofu/modules/services/frontend-infra/**'
              - 'tofu/environments/stage/services/frontend-infra/**'
              - '.github/workflows/deploy-staging.yml'

  deploy-stage-iac:
    needs: detect-changes
    
    if: needs.detect-changes.outputs.deploy-iac == 'true'
    environment: staging
    runs-on: ubuntu-latest
    env:
      TF_VAR_region: ${{ vars.AWS_REGION }}
      TF_VAR_environment: ${{ vars.ENV_SHORT_NAME }}
      TF_VAR_name_prefix: "tb-${{ vars.PROJECT_SHORT_NAME }}-${{ vars.ENV_SHORT_NAME }}"
      TF_VAR_frontend_url: ${{ vars.FRONTEND_URL }}
      TF_VAR_ssl_cert_arn: ${{ vars.SSL_CERT_ARN }}

    steps:
      - uses: actions/checkout@v4

      - name: install opentofu
        uses: opentofu/setup-opentofu@v1
        with: 
          tofu_version: ${{ vars.TF_VERSION }}
          tofu_wrapper: false

      - name: install terragrunt
        run: |
          sudo wget -q -O /bin/terragrunt "https://github.com/gruntwork-io/terragrunt/releases/download/v${{ vars.TG_VERSION }}/terragrunt_linux_amd64"
          sudo chmod +x /bin/terragrunt
          terragrunt -v

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: ${{ secrets.IAM_ROLE }}
          role-session-name: Appointment_GitHub_to_AWS_via_FederatedOIDC
          aws-region: ${{ vars.AWS_REGION }}

      - name: vpc
        working-directory: ./tofu/environments/stage/network/vpc
        run: |
          terragrunt init -upgrade
          terragrunt validate
          terragrunt plan -out tfplan
          terragrunt apply tfplan

      - name: backend-infra
        working-directory: ./tofu/environments/stage/services/backend-infra
        run: |
          terragrunt init -upgrade
          terragrunt validate
          terragrunt plan -out tfplan
          terragrunt apply tfplan

      - name: cache
        working-directory: ./tofu/environments/stage/data-store/cache
        run: |
          terragrunt init -upgrade
          terragrunt validate
          terragrunt plan -out tfplan
          terragrunt apply tfplan

      - name: database
        working-directory: ./tofu/environments/stage/data-store/database
        run: |
          terragrunt init -upgrade
          terragrunt validate
          terragrunt plan -out tfplan
          terragrunt apply tfplan
          
      - name: frontend-infra
        working-directory: ./tofu/environments/stage/services/frontend-infra
        run: |
          terragrunt init -upgrade
          terragrunt validate
          terragrunt plan -out tfplan
          terragrunt apply tfplan

  build-and-deploy-stage-frontend:
    needs:
      - detect-changes
      - deploy-stage-iac
    if: |
      always() &&
      (needs.deploy-stage-iac.result == 'success' || needs.deploy-stage-iac.result == 'skipped') &&
      needs.detect-changes.outputs.deploy-frontend == 'true'
    environment: staging
    runs-on: ubuntu-latest
    env:
      TF_VAR_region: ${{ vars.AWS_REGION }}
      TF_VAR_environment: ${{ vars.ENV_SHORT_NAME }}
      TF_VAR_name_prefix: "tb-${{ vars.PROJECT_SHORT_NAME }}-${{ vars.ENV_SHORT_NAME }}"
      TF_VAR_frontend_url: ${{ vars.FRONTEND_URL }}
      TF_VAR_ssl_cert_arn: ${{ vars.SSL_CERT_ARN }}

    steps:
      - uses: actions/checkout@v4

      - name: Setup NPM
        uses: actions/setup-node@v4
        with:
          node-version: '20.x'

      - name: Install dependencies
        run: cd frontend && npm install

      - name: Build stage frontend
        run: |
          cp frontend/.env.stage.example frontend/.env.stage
          cd frontend && npm run build -- --mode ${{ vars.APP_ENV }}

      - name: install opentofu
        uses: opentofu/setup-opentofu@v1
        with: 
          tofu_version: ${{ vars.TF_VERSION }}
          tofu_wrapper: false

      - name: install terragrunt
        run: |
          sudo wget -q -O /bin/terragrunt "https://github.com/gruntwork-io/terragrunt/releases/download/v${{ vars.TG_VERSION }}/terragrunt_linux_amd64"
          sudo chmod +x /bin/terragrunt
          terragrunt -v

      - name: Install AWS CLI
        uses: unfor19/install-aws-cli-action@v1
        with:
          version: 2
          arch: amd64

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: ${{ secrets.IAM_ROLE }}
          role-session-name: Appointment_GitHub_to_AWS_via_FederatedOIDC
          aws-region: ${{ vars.AWS_REGION }}

      - name: Get frontend bucket & distribution
        id: get-frontend-resources
        working-directory: ./tofu/environments/stage/services/frontend-infra
        run: |
          terragrunt init -upgrade
          echo "bucket=$(terragrunt output bucket_name | tr -d '"')" >> $GITHUB_OUTPUT
          echo "distribution=$(terragrunt output cloudfront_id)" >> $GITHUB_OUTPUT

      - name: Deploy frontend to S3
        run: |
          aws s3 sync frontend/dist "s3://${{ steps.get-frontend-resources.outputs.bucket }}"
          aws cloudfront create-invalidation --distribution-id ${{ steps.get-frontend-resources.outputs.distribution }} --paths "/*"

  build-backend-image:
    needs:
      - detect-changes
    environment: staging
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: ${{ secrets.IAM_ROLE }}
          role-session-name: Appointment_GitHub_to_AWS_via_FederatedOIDC
          aws-region: ${{ vars.AWS_REGION }}

      - name: Login to Amazon ECR
        id: login-ecr
        uses: aws-actions/amazon-ecr-login@v2
        with:
          mask-password: 'true'

      - name: Build, tag, and push backend image to Amazon ECR
        id: build-backend
        env:
          ECR_TAG: '${{ steps.login-ecr.outputs.registry }}/${{ vars.PROJECT }}:backend-${{ github.sha }}'
          RELEASE_VERSION: ${{ github.sha }}
        run: |
          # Build a docker container and
          # push it to ECR so that it can
          # be deployed to ECS.
          docker build --build-arg "RELEASE_VERSION=$RELEASE_VERSION" -t $ECR_TAG ./backend -f ./backend/deploy.dockerfile
          docker push $ECR_TAG
          echo "image_backend=$ECR_TAG" >> $GITHUB_OUTPUT
          echo $ECR_TAG > ecr_tag.txt
          zip ecr_tag.zip ecr_tag.txt

      - name: Archive ECR tag
        uses: actions/upload-artifact@v4
        with:
          name: ecr_tag
          path: ecr_tag.zip

  deploy-stage-backend:
    needs:
      - build-backend-image
      - detect-changes
      - deploy-stage-iac
    if: |
      always() &&
      (needs.deploy-stage-iac.result == 'success' || needs.deploy-stage-iac.result == 'skipped') &&
      needs.detect-changes.outputs.deploy-backend == 'true'
    environment: staging
    runs-on: ubuntu-latest
    env:
      TF_VAR_region: ${{ vars.AWS_REGION }}
      TF_VAR_environment: ${{ vars.ENV_SHORT_NAME }}
      TF_VAR_name_prefix: "tb-${{ vars.PROJECT_SHORT_NAME }}-${{ vars.ENV_SHORT_NAME }}"
      TF_VAR_app_env: ${{ vars.APP_ENV }}
      TF_VAR_db_enc_secret: ${{ vars.DB_ENCRYPTED_SECRET }}
      TF_VAR_frontend_url: ${{ vars.FRONTEND_URL }}
      TF_VAR_fxa_secret: ${{ vars.FXA_SECRET }}
      TF_VAR_google_oauth_secret: ${{ vars.GOOGLE_OAUTH_SECRET }}
      TF_VAR_log_level: ${{ vars.LOG_LEVEL }}
      TF_VAR_short_base_url: ${{ vars.SHORT_BASE_URL }}
      TF_VAR_smtp_secret: ${{ vars.SMTP_SECRET }}
      TF_VAR_zoom_callback: ${{ vars.ZOOM_CALLBACK }}
      TF_VAR_zoom_secret: ${{ vars.ZOOM_SECRET }}
      TF_VAR_sentry_dsn: ${{ vars.SENTRY_DSN }}
      TF_VAR_ssl_cert_arn: ${{ vars.SSL_CERT_ARN }}

    steps:
      - uses: actions/checkout@v4

      - name: install opentofu
        uses: opentofu/setup-opentofu@v1
        with: 
          tofu_version: ${{ vars.TF_VERSION }}
          tofu_wrapper: false

      - name: install terragrunt
        run: |
          sudo wget -q -O /bin/terragrunt "https://github.com/gruntwork-io/terragrunt/releases/download/v${{ vars.TG_VERSION }}/terragrunt_linux_amd64"
          sudo chmod +x /bin/terragrunt
          terragrunt -v

      - name: download ecr tag
        uses: actions/download-artifact@v4
        with:
            name: 
              ecr_tag

      - name: Unzip ECR tag
        id: get_ecr_tag
        run: |
          unzip ecr_tag.zip
          output=$(cat ecr_tag.txt)
          echo ecr_tag=$output >> $GITHUB_OUTPUT

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: ${{ secrets.IAM_ROLE }}
          role-session-name: Appointment_GitHub_to_AWS_via_FederatedOIDC
          aws-region: ${{ vars.AWS_REGION }}

      - name: deploy backend-service
        working-directory: ./tofu/environments/stage/services/backend-service
        run: |
          terragrunt init -upgrade
          terragrunt validate
          terragrunt plan -var 'image=${{ steps.get_ecr_tag.outputs.ecr_tag }}' -out tfplan
          terragrunt apply tfplan

  create-release:
    needs:
      - build-backend-image
      - build-and-deploy-stage-frontend
      - deploy-stage-iac
      - deploy-stage-backend
    if: |
      always() &&
      contains(join(needs.*.result, ','), 'success') &&
      ! contains(join(needs.*.result, ','), 'failure')
    environment: production
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Setup NPM
        uses: actions/setup-node@v4
        with:
          node-version: '20.x'

      - name: Install dependencies
        run: cd frontend && npm install

      - name: Build prod frontend
        run: |
          cp frontend/.env.prod.example frontend/.env.prod
          cd frontend && npm run build -- --mode ${{ vars.APP_ENV }}
          zip -r ../frontend.zip dist

      - name: download ecr tag
        uses: actions/download-artifact@v4
        with:
            name: 
              ecr_tag
      
      - name: Zip IaC
        run: zip -r iac.zip tofu -x "tofu/environments/stage/*" "tofu/environments/prod/*/*/.terragrunt-cache/*"

      - name: create release tag
        id: create-release-tag
        run: echo "tag_name=r-$(printf %04d $GITHUB_RUN_NUMBER)" >> $GITHUB_OUTPUT

      - name: create draft release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.create-release-tag.outputs.tag_name }}
          name: Release ${{ steps.create-release-tag.outputs.tag_name }}
          body: |
            ## Info
            Commit ${{ github.sha }} was deployed to `stage`. [See code diff](${{ github.event.compare }}).

            It was initialized by [${{ github.event.sender.login }}](${{ github.event.sender.html_url }}).

            ## How to Promote?
            In order to promote this to prod, edit the draft and press **"Publish release"**.
          draft: true
          files: |
            ecr_tag.zip
            frontend.zip
            iac.zip