ci‑cd.yml

name: CI Pipeline

on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

permissions:
  id-token: write  # Needed for OIDC (if enabled)
  contents: read

jobs:
  lint-and-validate:
    name: Lint & Validate Terraform + Bicep
    runs-on: ubuntu-latest

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


      # TERRAFORM VALIDATION
      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v3
        with:
          terraform_version: 1.6.3

      - name: Terraform init
        working-directory: terraform/
        run: terraform init

      - name: Terraform format check
        working-directory: terraform/
        run: terraform fmt -check -recursive

      - name: TFLint
        uses: terraform-linters/setup-tflint@v1
        with:
          tflint_version: latest

      - name: Run tflint
        working-directory: terraform/
        run: tflint

      - name: Terraform validate
        working-directory: terraform/
        run: terraform validate


      # BICEP VALIDATION
      - name: Install Bicep CLI
        run: |
          az bicep install
          az bicep upgrade

      - name: Bicep build
        working-directory: bicep/
        run: bicep build main.bicep

      - name: Bicep what-if (simulated)
        run: echo "Skipped: would run az deployment group what-if here"

      #
      # OPTIONAL: OIDC Login to Azure (commented)
      #
      # - name: Azure login (OIDC)
      #   uses: azure/login@v1
      #   with:
      #     client-id: ${{ secrets.AZURE_CLIENT_ID }}
      #     tenant-id: ${{ secrets.AZURE_TENANT_ID }}
      #     subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}


  terratest:
    name: Terraform Integration Tests (Parallel)
    runs-on: ubuntu-latest

    strategy:
      matrix:
        region: [canadacentral, eastus2]

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

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v3

      - name: Simulated Terratest
        run: |
          echo "Running Terratest for region: ${{ matrix.region }}"
          echo "(Stubbed) Would deploy to sandbox, run Go test, and destroy."


  blue-green-swap:
    name: Blue-Green Swap & E2E Test
    runs-on: ubuntu-latest
    needs: terratest

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

      - name: Simulate blue-green swap
        run: |
          echo "Simulating Traffic Manager swap: staging -> production"
          # Would run something like:
          # az network traffic-manager endpoint update \
          #   --name prod-app --profile-name traffic-prof --resource-group rg-demo \
          #   --type azureEndpoints --target-resource-id /subscriptions/.../aks-green \
          echo "(Swap logic stubbed for showcase)"

      - name: Run E2E test
        id: e2e
        run: |
          echo "Running end-to-end health check against production endpoint..."
          # Simulate test result
          echo "Simulated failure"
          exit 1  # force failure to trigger rollback path

      - name: Rollback Traffic Manager to blue slot
        if: failure() && steps.e2e.outcome == 'failure'
        run: |
          echo "Rolling back traffic to previous (blue) deployment"
          # Would normally call:
          # az network traffic-manager endpoint update --target-resource-id /aks-blue