Go - QR generator API

go_qr_generator_api.go

package main

import (
  "net/http"
  "github.com/gin-gonic/gin"
  qrcode "github.com/skip2/go-qrcode"
)

type QrRequest struct {
  UrlToEmbed string `json:"urlToEmbed"`
}

func requestHandler(c *gin.Context) {
  var qrRequest QrRequest
  if err := c.BindJSON(&qrRequest); err != nil {
    c.AbortWithStatus(http.StatusBadRequest)
    return
  }

  if qrRequest.UrlToEmbed == "" {
    c.AbortWithStatus(http.StatusBadRequest)
    return
  }

  var qrCode []byte
  qrCode, err := qrcode.Encode(qrRequest.UrlToEmbed, qrcode.Medium, 512)
  if err != nil {
    c.AbortWithStatus(http.StatusInternalServerError)
    return
  }
  c.Data(http.StatusOK, "image/png", qrCode)
}

func main() {
  r := gin.New()
  r.POST("/qr", requestHandler)
  r.RunTLS(":3000", 
	   "/Users/mayankc/Work/source/certs/cert.pem", 
	   "/Users/mayankc/Work/source/certs/key.pem")
}