terraform.yml

name: Terraform Apply

on:
  workflow_dispatch:

jobs:
  terraform-apply:
    runs-on: ubuntu-latest

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

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v2
        with:
          terraform_version: 1.7.6

      - name: Terraform Init
        working-directory: ./infra/terraform #워크플로우 파일 위치 폴더 기준 x, 체크아웃된 저장소 루트 기준
        run: terraform init

      - name: Set Environment based on Branch
        run: |
          BRANCH=${{ github.ref_name }}
          if [ "$BRANCH" = "develop" ] ; then
            ENV="test"
          elif [ "$BRANCH" = "main" ] ; then
            ENV="prod"
          else
            echo "Unsupported branch: $BRANCH"
            exit 1
          fi
          echo "Environment: $ENV"
          
          if [ "$ENV" = "prod" ] ; then
            echo "${{secrets.TFVARS_PROD}}" > ./infra/terraform/env/terraform.tfvars    
          else
            echo "${{secrets.TFVARS_TEST}}" > ./infra/terraform/env/terraform.tfvars
          fi

      - name: Select or Create Workspace
        working-directory: ./infra/terraform
        run: |
          if terraform workspace list | grep -q "$ENV"; then
            terraform workspace select "$ENV"
          else
            terraform workspace new "$ENV"
          fi

      - name: Terraform Apply
        working-directory: ./infra/terraform/env
        run: terraform apply -auto-approve -var-file="terraform.tfvars"
        env:
            AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
            AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}