source ~/global.env

1. route53-arc-automation  (SNS + Lambda + SSM)
2. route53-arc-routing     (ARC Cluster + Health Checks + DNS)
3. route53-arc-secondary   (Amplify o S3+CloudFront)
4. route53-arc-primary     (EC2 + ALB + VPC)
5. Buckets S3 temporales   (Lambda code bucket)

echo "=== Eliminando Stacks CloudFormation ==="

# 1. Si usaste Amplify (opción default del Lab 2), el stack no tiene recursos S3 que vaciar.
#    Si usaste CloudFront+S3, vaciamos el bucket primero.
CF_BUCKET="route53-arc-fallback-${AWS_ACCOUNT_ID}"
# Vaciar bucket S3 solo si existe (solo aplica si usaste CloudFront+S3 en Lab 2)
if aws s3 ls s3://$CF_BUCKET --region $AWS_REGION > /dev/null 2>&1; then
  echo "▶ Vaciando bucket $CF_BUCKET..."
  aws s3 rm s3://$CF_BUCKET --recursive --region $AWS_REGION
else
  echo "ℹ️  Bucket $CF_BUCKET no existe (usaste Amplify en Lab 2 — ok)"
fi

# 2. Eliminar stacks en orden
STACKS=(
  "route53-arc-automation"
  "route53-arc-routing"
  "route53-arc-secondary"
  "route53-arc-primary"
)

for STACK in "${STACKS[@]}"; do
  echo "▶ Eliminando stack: $STACK..."
  aws cloudformation delete-stack --stack-name $STACK --region $AWS_REGION 2>/dev/null || true
  aws cloudformation wait stack-delete-complete --stack-name $STACK --region $AWS_REGION 2>/dev/null \
    && echo "  ✅ Stack $STACK eliminado" \
    || echo "  ℹ️  Stack $STACK ya no existe o tardó más de lo esperado"
done

# 3. Eliminar bucket S3 del código Lambda (creado manualmente en el Lab 4)
LAMBDA_BUCKET="route53-arc-lambda-${AWS_ACCOUNT_ID}"
aws s3 rm s3://$LAMBDA_BUCKET --recursive --region $AWS_REGION 2>/dev/null || true
aws s3 rb s3://$LAMBDA_BUCKET --region $AWS_REGION 2>/dev/null || true

echo "✅ Limpieza de CloudFormation completada"

04_automation → 03_arc → 02_secondary → 01_primary

echo "=== Eliminando Módulos Terraform ==="

# 1. Destroy Lab 4 (Automation)
if [ -d ~/route53-arc-tf/04_automation ]; then
  cd ~/route53-arc-tf/04_automation
  terraform destroy -var="notification_email=$NOTIFICATION_EMAIL" -auto-approve
  echo "✅ Lab 4 destruido"
fi

# 2. Destroy Lab 3 (ARC) — puede tardar 5-10 minutos por el ARC Cluster
if [ -d ~/route53-arc-tf/03_arc ]; then
  echo "⏳ Destruyendo ARC Cluster (5-10 min)..."
  cd ~/route53-arc-tf/03_arc
  terraform destroy -auto-approve
  echo "✅ Lab 3 destruido"
fi

# 3. Destroy Lab 2 (Secondary — Amplify o CloudFront+S3)
if [ -d ~/route53-arc-tf/02_secondary ]; then
  cd ~/route53-arc-tf/02_secondary
  terraform destroy -auto-approve
  echo "✅ Lab 2 destruido"
fi

# 4. Destroy Lab 1 (Primary)
if [ -d ~/route53-arc-tf/01_primary ]; then
  cd ~/route53-arc-tf/01_primary
  terraform destroy -var="vpc_mode=${VPC_MODE}" -var="instance_type=t4g.micro" -auto-approve
  echo "✅ Lab 1 destruido"
fi

echo "✅ Limpieza de Terraform completada"

echo "=== Verificación Final de Recursos AWS ==="

# EC2
EC2_COUNT=$(aws ec2 describe-instances \
  --filters "Name=tag:Workshop,Values=route53-arc" \
            "Name=instance-state-name,Values=running,stopped,stopping" \
  --region $AWS_REGION --query 'length(Reservations[])' --output text 2>/dev/null)
[ "${EC2_COUNT:-0}" = "0" ] \
  && echo "✅ Sin instancias EC2 activas" \
  || echo "⚠️  Quedan $EC2_COUNT instancias EC2 — eliminá manualmente desde la consola"

# ALB
ALB_COUNT=$(aws elbv2 describe-load-balancers --region $AWS_REGION \
  --query "length(LoadBalancers[?contains(LoadBalancerName,'route53-arc')])" \
  --output text 2>/dev/null)
[ "${ALB_COUNT:-0}" = "0" ] \
  && echo "✅ Sin Load Balancers activos" \
  || echo "⚠️  Quedan $ALB_COUNT ALBs"

# Lambdas
aws lambda get-function --function-name route53-arc-failover-handler \
  --region $AWS_REGION > /dev/null 2>&1 \
  && echo "⚠️  Lambda Failover aún existe" || echo "✅ Lambda Failover eliminada"

aws lambda get-function --function-name route53-arc-failback-handler \
  --region $AWS_REGION > /dev/null 2>&1 \
  && echo "⚠️  Lambda Failback aún existe" || echo "✅ Lambda Failback eliminada"

# ARC Cluster
ARC_CLUSTERS=$(aws route53-recovery-control-config list-clusters \
  --region $AWS_REGION \
  --query "length(Clusters[?contains(Name,'route53-arc')])" \
  --output text 2>/dev/null)
[ "${ARC_CLUSTERS:-0}" = "0" ] \
  && echo "✅ Sin ARC Clusters activos" \
  || echo "⚠️  Quedan $ARC_CLUSTERS ARC Clusters — puede estar aún eliminándose"

# Amplify
AMPLIFY_COUNT=$(aws amplify list-apps --region $AWS_REGION \
  --query "length(apps[?name=='route53-arc-fallback'])" \
  --output text 2>/dev/null)
[ "${AMPLIFY_COUNT:-0}" = "0" ] \
  && echo "✅ Sin apps Amplify activas" \
  || echo "⚠️  App Amplify 'route53-arc-fallback' aún existe"

echo ""
echo "🎉 ¡Limpieza completa! Gracias por realizar el AWS Route 53 ARC Workshop de roLearning."