package main

import (
	"github.com/gin-gonic/gin"
	"github.com/gomodule/redigo/redis"
	"log"
)

var redisPool *redis.Pool
var err error

func main() {

	redisPool = RedisPollInit()

	gin.SetMode(gin.ReleaseMode)

	r := gin.Default()

	r.GET("/", IndexAction)

	r.GET("/ping", PingAction)

	r.GET("/user/:name", UserAction)

	r.GET("/agent", AgentAction)

	r.GET("/admin", AdminAction)

	r.Run(":80")

}

func RedisPollInit() *redis.Pool {
	return &redis.Pool{
		MaxIdle:   3,
		MaxActive: 5,
		Dial: func() (redis.Conn, error) {
			c, err := redis.Dial("tcp", "127.0.0.1:6379")
			if err != nil {
				return nil, err
			}

			_, err = c.Do("AUTH", "123456")
			if err != nil {
				c.Close()
				return nil, err
			}
			return c, err
		},
	}
}

func IndexAction(c *gin.Context) {
	c.JSON(200, gin.H{"message": "index"})
}

func PingAction(c *gin.Context) {
	c.JSON(200, gin.H{"message": "pong"})
}

func UserAction(c *gin.Context) {
	c.String(200, "Hello %s", c.Param("name"))
}

func AgentAction(c *gin.Context) {
	c.String(200, c.GetHeader("user-agent"))
}

func AdminAction(c *gin.Context) {

	conn := redisPool.Get()
	defer conn.Close()

	data, err := redis.String(conn.Do("GET", "username"))
	if err != nil {
		log.Println(err)
		return
	}
	c.String(200, data)
}