#!/bin/bash

# Deploy VIMS to AWS EKS
# Uses Kubernetes manifests for deployment

set -e

REGION="eu-north-1"
CLUSTER_NAME="landvex-prod"
NAMESPACE="vims"
PROJECT="vims"

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

echo -e "${GREEN}🚀 VIMS EKS Deployment${NC}"
echo "======================"
echo "Region: ${REGION}"
echo "Cluster: ${CLUSTER_NAME}"
echo "Namespace: ${NAMESPACE}"
echo ""

# Check prerequisites
echo -e "${YELLOW}Checking prerequisites...${NC}"

if ! command -v kubectl &> /dev/null; then
    echo -e "${RED}kubectl not found. Please install kubectl.${NC}"
    exit 1
fi

if ! command -v aws &> /dev/null; then
    echo -e "${RED}AWS CLI not found. Please install AWS CLI.${NC}"
    exit 1
fi

# Update kubeconfig
echo -e "${YELLOW}Updating kubeconfig...${NC}"
aws eks update-kubeconfig \
    --region ${REGION} \
    --name ${CLUSTER_NAME} \
    --alias ${CLUSTER_NAME}

# Verify cluster connection
echo -e "${YELLOW}Verifying cluster connection...${NC}"
kubectl cluster-info

# Create namespace if not exists
echo -e "${YELLOW}Creating namespace...${NC}"
kubectl create namespace ${NAMESPACE} --dry-run=client -o yaml | kubectl apply -f -

# Build and push Docker image
echo -e "${YELLOW}Building Docker image...${NC}"

# Get ECR login token
ECR_URI=$(aws sts get-caller-identity --query Account --output text).dkr.ecr.${REGION}.amazonaws.com
REPO_URI=${ECR_URI}/${PROJECT}

# Login to ECR
echo -e "${YELLOW}Logging in to ECR...${NC}"
aws ecr get-login-password --region ${REGION} | \
    docker login --username AWS --password-stdin ${ECR_URI}

# Create ECR repository if not exists
echo -e "${YELLOW}Creating ECR repository...${NC}"
aws ecr describe-repositories --repository-names ${PROJECT} --region ${REGION} 2>/dev/null || \
    aws ecr create-repository --repository-name ${PROJECT} --region ${REGION}

# Build image
docker build -t ${PROJECT}:latest .
docker tag ${PROJECT}:latest ${REPO_URI}:latest

# Push image
echo -e "${YELLOW}Pushing image to ECR...${NC}"
docker push ${REPO_URI}:latest

echo -e "${GREEN}✓ Image pushed to ${REPO_URI}:latest${NC}"

# Update Kubernetes manifests with correct image
echo -e "${YELLOW}Updating Kubernetes manifests...${NC}"
sed -i "s|image:.*vims.*|image: ${REPO_URI}:latest|g" k8s/vims-api.yaml
sed -i "s|image:.*vims.*|image: ${REPO_URI}:latest|g" k8s/vims-worker.yaml

# Apply Kubernetes manifests
echo -e "${YELLOW}Applying Kubernetes manifests...${NC}"

echo -e "${BLUE}  → Namespace${NC}"
kubectl apply -f k8s/namespace.yaml

echo -e "${BLUE}  → ConfigMap${NC}"
kubectl apply -f k8s/configmap.yaml -n ${NAMESPACE}

echo -e "${BLUE}  → Secrets${NC}"
# Create secrets from environment variables or generate new ones
kubectl create secret generic vims-secrets \
    --from-literal=db-password=${DB_PASSWORD:-$(openssl rand -base64 32)} \
    --from-literal=jwt-secret=${JWT_SECRET:-$(openssl rand -base64 32)} \
    --from-literal=aws-access-key=${AWS_ACCESS_KEY_ID} \
    --from-literal=aws-secret-key=${AWS_SECRET_ACCESS_KEY} \
    -n ${NAMESPACE} \
    --dry-run=client -o yaml | kubectl apply -f -

echo -e "${BLUE}  → PostgreSQL${NC}"
kubectl apply -f k8s/postgres.yaml -n ${NAMESPACE}

echo -e "${BLUE}  → Redis${NC}"
kubectl apply -f k8s/redis.yaml -n ${NAMESPACE}

echo -e "${BLUE}  → VIMS API${NC}"
kubectl apply -f k8s/vims-api.yaml -n ${NAMESPACE}

echo -e "${BLUE}  → VIMS Worker${NC}"
kubectl apply -f k8s/vims-worker.yaml -n ${NAMESPACE}

echo -e "${BLUE}  → Ingress${NC}"
kubectl apply -f k8s/ingress.yaml -n ${NAMESPACE}

# Wait for deployments
echo -e "${YELLOW}Waiting for deployments...${NC}"
kubectl wait --for=condition=available --timeout=300s deployment/vims-api -n ${NAMESPACE}
kubectl wait --for=condition=available --timeout=300s deployment/vims-worker -n ${NAMESPACE}

# Verify deployment
echo -e "${YELLOW}Verifying deployment...${NC}"
kubectl get pods -n ${NAMESPACE}
kubectl get services -n ${NAMESPACE}
kubectl get ingress -n ${NAMESPACE}

# Get ingress URL
echo ""
echo -e "${GREEN}🎉 VIMS deployed to EKS!${NC}"
echo ""
echo -e "${BLUE}Deployment Status:${NC}"
kubectl get deployments -n ${NAMESPACE}

echo ""
echo -e "${BLUE}Service URLs:${NC}"
INGRESS_HOST=$(kubectl get ingress vims-ingress -n ${NAMESPACE} -o jsonpath='{.spec.rules[0].host}' 2>/dev/null || echo "Not configured")
if [ "${INGRESS_HOST}" != "Not configured" ]; then
    echo "  API: https://${INGRESS_HOST}/api/v1"
    echo "  Health: https://${INGRESS_HOST}/health"
else
    echo "  Ingress not configured. Use kubectl port-forward:"
    echo "  kubectl port-forward svc/vims-api 3450:3450 -n ${NAMESPACE}"
fi

echo ""
echo -e "${BLUE}Useful commands:${NC}"
echo "  View logs: kubectl logs -f deployment/vims-api -n ${NAMESPACE}"
echo "  Scale API: kubectl scale deployment vims-api --replicas=3 -n ${NAMESPACE}"
echo "  Shell: kubectl exec -it deployment/vims-api -n ${NAMESPACE} -- /bin/sh"
echo "  Delete: kubectl delete namespace ${NAMESPACE}"

echo ""
echo -e "${GREEN}✅ Deployment complete!${NC}"