VED-507: change teardown pipeline

Author: Akol125

azure/azure-pr-teardown-pipeline.yml

@@ -48,8 +48,25 @@ jobs:
           account_id="$(aws sts get-caller-identity --query Account --output text)"
 
           cd terraform
-          terraform workspace select $(WORKSPACE)
-          export ENVIRONMENT=$(WORKSPACE)
+          export WORKSPACE="pr-${ACTION_PR_NUMBER}"
+          export ENVIRONMENT="$WORKSPACE"
+          export BUCKET_NAME="immunisation-${WORKSPACE}-terraform-state-files"
+
+          # Check if PR state bucket exists
+          echo "Checking for existence of: s3://${BUCKET_NAME}"
+          if aws s3api head-bucket --bucket "$BUCKET_NAME" 2>/dev/null; then
+            echo "Bucket exists. Proceeding with init..."
+            make init
+          else
+            echo "Bucket does NOT exist. Using fallback environment 'internal-dev' for init only."
+            export ENVIRONMENT="internal-dev"
+            export BUCKET_NAME="immunisation-internal-dev-terraform-state-files"
+            make init
+
+            # Restore ENVIRONMENT to PR
+            export ENVIRONMENT="$WORKSPACE"
+            export BUCKET_NAME="immunisation-${WORKSPACE}-terraform-state-files"
+          fi
           make init-reconfigure && make destroy aws_account_no=${account_id} environment=$(WORKSPACE)
         displayName: Destroy terraform PR workspace and linked resources
         retryCountOnTaskFailure: 2