name: Terraform CI

# Static checks only. Plans run in HCP Terraform as speculative VCS runs on
# the PR (shoc-frontend-new-dev and shoc-frontend-new-staging). Applies are
# HCP auto-apply on merge to main (dev) and on a vX.Y.Z-staging tag (staging).

on:
  pull_request:
    branches: [main, dev]
    paths:
      - "terraform/**"
      - "scripts/**"
      - ".github/workflows/ci-terraform.yaml"
      - ".github/workflows/deploy-web.yaml"
  push:
    branches: [main]
    paths:
      - "terraform/**"
      - "scripts/**"
      - ".github/workflows/ci-terraform.yaml"

permissions:
  contents: read

jobs:
  terraform:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - uses: hashicorp/setup-terraform@dfe3c3f87815947d99a8997f908cb6525fc44e9e # v4.0.1
        with:
          terraform_version: "1.16.0"
          terraform_wrapper: false

      - name: Terraform fmt
        run: terraform fmt -check -recursive terraform

      - name: Validate live/dev
        run: |
          terraform -chdir=terraform/live/dev init -backend=false -input=false -lockfile=readonly -no-color
          terraform -chdir=terraform/live/dev validate -no-color

      - name: Validate live/staging
        run: |
          terraform -chdir=terraform/live/staging init -backend=false -input=false -lockfile=readonly -no-color
          terraform -chdir=terraform/live/staging validate -no-color

      - name: Import plan guard tests
        run: python3 scripts/test-terraform-import-plan-check.py

      - name: App/Terraform isolation tests
        run: python3 scripts/test_check_app_terraform_isolation.py