local files runner on golang

main.go

package main

import (
	"bytes"
	"errors"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/parsiya/golnk"
	"io/ioutil"
	"log"
	"os/exec"
	"path/filepath"
)

func main() {
	Server()
}

func Server() {
	r := gin.Default()
	r.GET("/run", func(c *gin.Context) {
		requredFile := c.Query("file")

		err := runFile(requredFile)

		if err != nil {
			c.JSON(422, gin.H{
				"error": err.Error(),
			})
		} else {
			c.JSON(200, gin.H{
				"message": "File is running",
			})
		}

	})

	r.GET("/list", func(c *gin.Context) {
		c.JSON(200, gin.H{
			"message": locateFiles(),
		})

	})

	r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
}

func findFile(name string, fileList []string) error {
	for _, v := range fileList {
		if v == name {
			return nil
		}
	}

	return errors.New("file not found")
}

func runFile(name string) error {
	err := findFile(name, locateFiles())

	if err != nil {
		return err
	}

	if filepath.Ext(name) == ".lnk" {
		lnk, err := lnk.File(name)
		if err != nil {
			return nil
		}

		name = lnk.LinkInfo.LocalBasePath
	} else {
		name = fmt.Sprintf("./%s", name)
	}

	command := exec.Command(name)

	// set var to get the output
	var out bytes.Buffer

	// set the output to our variable
	command.Stdout = &out
	err = command.Run()
	if err != nil {
		log.Println(err)
		return err
	}

	fmt.Println(out.String())

	return nil
}

func locateFiles() []string {
	files, err := ioutil.ReadDir("./")
	if err != nil {
		log.Fatal(err)
	}

	var filesList []string

	for _, f := range files {
		filesList = append(filesList, f.Name())
		fmt.Println(f.Name())
	}

	return filesList
}