Second to string formated

package main

import (
    "fmt"
)

func main() {
    fmt.Print(ConvToTimeAsString(3667))
}

func ConvToTimeAsString(time int64)string{
    // Conv
  hrs := time / 3600;
  mins :=(time % 3600) / 60;
  secs := time % 60;

  // Assign Pad Start
  var ret = "";
  if (hrs > 0) {
      hrsPadStart := ""
      if hrs < 10 {
          hrsPadStart = "0"
      }
      
      minsPadStart := ""
      if mins < 10 {
          minsPadStart = "0"
      }
      
      secPadStart := ""
      if secs < 10 {
          secPadStart = "0"
      }
      ret += fmt.Sprintf("%v%v:%v%v:%v%v",hrsPadStart,hrs,minsPadStart,mins,secPadStart,secs)
  }else if (mins > 0){
      minsPadStart := ""
      if mins < 10 {
          minsPadStart = "0"
      }
      
      secPadStart := ""
      if secs < 10 {
          secPadStart = "0"
      }
    ret += fmt.Sprintf("%v%v:%v%v",minsPadStart,mins,secPadStart,secs)
  } else{
      secPadStart := ""
      if secs < 10 {
          secPadStart = "0"
      }
      
     ret +=  fmt.Sprintf("00:%v%v",secPadStart,secs);
  }
  return ret;
}