#!/bin/bash

set -e

echo "=== Redis Cache Demo K8s 部署脚本 ==="

# 检查 kubectl 是否可用
if ! command -v kubectl &> /dev/null; then
    echo "Error: kubectl not found. Please install kubectl first."
    exit 1
fi

echo "1. 创建 Redis StatefulSet (3个副本，支持读写分离)"
kubectl apply -f k8s/redis.yaml

echo "2. 等待 Redis Pod 启动..."
kubectl wait --for=condition=ready pod -l app=redis -n redis-cache-demo --timeout=120s

echo "3. 检查 Redis Pod 状态"
kubectl get pods -n redis-cache-demo -l app=redis -o wide

echo "4. 检查 Redis Service"
kubectl get svc -n redis-cache-demo

echo ""
echo "=== Redis 集群信息 ==="
echo "Master Pod: redis-0.redis-headless.redis-cache-demo.svc.cluster.local:6379"
echo "Replica Pods: redis-1.redis-headless.redis-cache-demo.svc.cluster.local:6379, redis-2.redis-headless.redis-cache-demo.svc.cluster.local:6379"
echo "Headless Service: redis-headless.redis-cache-demo.svc.cluster.local:6379"
echo "LoadBalancer Service: redis.redis-cache-demo.svc.cluster.local:6379"

echo ""
echo "=== 部署应用 ==="
echo "请先构建镜像并部署应用:"
echo "1. docker build -t redis-cache-demo:latest ."
echo "2. kubectl apply -f k8s/app.yaml"
echo "3. kubectl wait --for=condition=ready pod -l app=redis-cache-demo -n redis-cache-demo --timeout=120s"
echo "4. kubectl get svc -n redis-cache-demo redis-cache-demo"

echo ""
echo "=== 测试应用 ==="
echo "获取应用服务地址:"
echo "kubectl get svc redis-cache-demo -n redis-cache-demo"

echo ""
echo "API 测试示例:"
echo "# 健康检查"
echo "curl http://<SERVICE_IP>/health"
echo ""
echo "# 设置缓存"
echo "curl -X POST http://<SERVICE_IP>/api/cache/test -H 'Content-Type: application/json' -d '{\"value\":\"hello world\",\"expires_in\":300}'"
echo ""
echo "# 获取缓存"
echo "curl http://<SERVICE_IP>/api/cache/test"
echo ""
echo "# Hash 操作"
echo "curl -X POST http://<SERVICE_IP>/api/hash/user:1/name -H 'Content-Type: application/json' -d '{\"value\":\"张三\"}'"
echo "curl http://<SERVICE_IP>/api/hash/user:1/name"
echo ""
echo "# 计数器"
echo "curl -X POST http://<SERVICE_IP>/api/counter/visits/inc"
echo ""
echo "# 测试重连"
echo "curl -X POST http://<SERVICE_IP>/api/test/reconnect"

echo ""
echo "=== 测试读写分离 ==="
echo "监控 Redis 查看读写分离效果:"
echo "kubectl exec -it redis-0 -n redis-cache-demo -- redis-cli monitor"
echo "kubectl exec -it redis-1 -n redis-cache-demo -- redis-cli monitor"
echo "kubectl exec -it redis-2 -n redis-cache-demo -- redis-cli monitor"
echo ""
echo "执行读写操作，观察请求分布"