Crappy URL Shortener

main.go

package main

import (
	"encoding/hex"
	"fmt"
	"math/rand"
	"net/http"
	"time"

	valid "github.com/asaskevich/govalidator"
	"github.com/gin-contrib/static"
	"github.com/gin-gonic/gin"
	"github.com/gomodule/redigo/redis"
)

func main() {
	rand.Seed(time.Now().UTC().UnixNano())
	con, err := redis.Dial("tcp", ":6379")
	if err != nil {
		panic(err)
	}
	defer con.Close()

	gin.SetMode(gin.ReleaseMode)
	r := gin.Default()
	r.Use(static.Serve("/", static.LocalFile("./static", true)))

	api := r.Group("/r")
	api.GET("/:route", func(c *gin.Context) {
		route := c.Param("route")
		v, err := con.Do("GET", route)
		if err != nil {
			c.JSON(500, gin.H{"error": err, "route": route})
		}
		fmt.Printf("redis: %s\n", v)
		if v == nil {
			c.JSON(404, gin.H{"error": "route not found"})
		}
		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s", v))
	})
	api.POST("/new", func(c *gin.Context) {
		nr := c.PostForm("makeShort")
		fmt.Println("route to make tiny", nr)
		b := valid.IsURL(nr)
		if !b {
			c.JSON(400, gin.H{"error": "url is not valid"})
		}
		bs := make([]byte, 4)
		rand.Read(bs)
		u := hex.EncodeToString(bs)
		_, err := con.Do("SET", u, nr)
		if err != nil {
			c.JSON(500, gin.H{"error": err})
		}
		c.JSON(200, gin.H{"newRoute": u})
	})

	r.Run()
}