package main

import (
    "fmt"
    "log"
    "os/exec"
    "io/ioutil"
    "strings"
    "math/rand"
    "time"
)

const (
    upFile = "up-six.sh"
    downFile = "down-six.sh"
    repeatTimer = 120
)

func main() {
    for true {
        fileToExec(downFile)
        fileToExec(upFile)
        time.Sleep(repeatTimer * time.Second)
    }
}

func fileToExec(filename string) {
    doCmds := fileToCmd(filename)
    for _, currCmd := range doCmds {
        actualCmd := ""
        if strings.Count(currCmd, "%x") == 1 {
            actualCmd = fmt.Sprintf(currCmd, rand.Int() % 65536)
        } else if strings.Count(currCmd, "%x") == 2 {
            actualCmd = fmt.Sprintf(currCmd, rand.Int() % 65536, rand.Int() % 65536)
        } else if strings.Count(currCmd, "%x") == 3 {
            actualCmd = fmt.Sprintf(currCmd, rand.Int() % 65536, rand.Int() % 65536, rand.Int() % 65536)
        } else if strings.Count(currCmd, "%x") == 4 {
            actualCmd = fmt.Sprintf(currCmd, rand.Int() % 65536, rand.Int() % 65536, rand.Int() % 65536, rand.Int() % 65536)
        } else if strings.Count(currCmd, "%x") == 5 {
            actualCmd = fmt.Sprintf(currCmd, rand.Int() % 65536, rand.Int() % 65536, rand.Int() % 65536, rand.Int() % 65536, rand.Int() % 65536)
        } else {
            actualCmd = currCmd
        }
        executeCmd(actualCmd)
    }
}

func fileToCmd(filename string) []string {
    fileBody, err := ioutil.ReadFile(filename)
    if err != nil {
        log.Printf("Error while reading file %s\n", filename)
        return []string{}
    }
    cmdArr := strings.Split(string(fileBody), "\n")
    return cmdArr
}

func executeCmd(cmdStr string) {
    cmd := exec.Command("bash", "-c", cmdStr)
    log.Println(cmdStr)
    err := cmd.Run()
    if err != nil {
        log.Println(err)
    }
}