deploy.yaml

name: Terraform Deploy

on:
  push:
    branches:
      - staging
      - main
  workflow_dispatch:

env:
  TF_WORKING_DIR: terraform

jobs:
  terraform:
    name: Terraform (plan & apply)
    runs-on: ubuntu-latest
    environment: ${{ github.ref == 'refs/heads/main' && 'prod' || 'staging' }}

    permissions:
      contents: read

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v2
        with:
          terraform_version: 1.5.6

      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@v2
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: ${{ secrets.AWS_REGION }}

      # Backend selection based on branch
      - name: Terraform Init
        working-directory: ${{ env.TF_WORKING_DIR }}
        run: |
          if [ "${{ github.ref }}" = "refs/heads/staging" ]; then
            terraform init -reconfigure -backend-config=backend-staging.tfvars -input=false
          else
            terraform init -reconfigure -backend-config=backend-prod.tfvars -input=false
          fi

      - name: Terraform Validate & Format
        working-directory: ${{ env.TF_WORKING_DIR }}
        run: |
          terraform fmt -check
          terraform validate

      - name: Terraform Plan
        id: plan
        working-directory: ${{ env.TF_WORKING_DIR }}
        run: |
          if [ "${{ github.ref }}" = "refs/heads/staging" ]; then
            terraform plan -var-file="staging.tfvars" -out=tfplan
          else
            terraform plan -var-file="prod.tfvars" -out=tfplan
          fi

      - name: Terraform Apply (staging)
        if: github.ref == 'refs/heads/staging'
        working-directory: ${{ env.TF_WORKING_DIR }}
        run: terraform apply -input=false -auto-approve tfplan

      - name: Terraform Apply (prod)
        if: github.ref == 'refs/heads/main'
        working-directory: ${{ env.TF_WORKING_DIR }}
        run: terraform apply -input=false -auto-approve tfplan

      - name: Show Outputs
        if: success()
        working-directory: ${{ env.TF_WORKING_DIR }}
        run: terraform output -json