package file

import (
	"fmt"
	"io"
	"os"
	"os/exec"
	"strconv"
	"time"
)

var Debug int = 0

//List function

// Thao tac file
func Create_file(path string) {
	// detect if file exists
	var _, err = os.Stat(path)

	// create file if not exists
	if os.IsNotExist(err) {
		var file, err = os.Create(path)
		if IsError(err) {
			//return
		}
		defer file.Close()
	}

	//Println("==> done creating file", path)
}
func Write_file(msg string, path string) {
	// open file using READ & WRITE permission
	//Check_dir(path)
	// Println("==>begin writting ")
	//var file, err = os.OpenFile(path, os.O_RDWR|os.O_APPEND, 0777)
	var file, err = os.OpenFile(path, os.O_RDWR, 0777)
	if IsError(err) {
		//return
	}
	defer file.Close()

	_, err = file.WriteString(msg)
	if IsError(err) {
		//return
	}
	// save changes
	err = file.Sync()
	if IsError(err) {
		//return
	}
	//Println("==> done writing to file")
}

func Write_log(msg string, path string) {
	Check_path(path)
	year, month, day := time.Now().Date()
	new_path := strconv.Itoa(year) + "-" + strconv.Itoa(int(month)) + "-" + strconv.Itoa(day) + ".txt"
	path = path + "/" + new_path
	Check_dir(path)
	var file, err = os.OpenFile(path, os.O_RDWR|os.O_APPEND, 0777)
	if IsError(err) {
		////return
		if Debug == 1 {
			fmt.Printf("%v", err)
		}

	}
	defer file.Close()

	_, err = file.WriteString(time.Now().String())
	if IsError(err) {
		////return
	}
	// write some text line-by-line to file
	_, err = file.WriteString("\n")
	if IsError(err) {
		////return
	}
	_, err = file.WriteString(msg)
	if IsError(err) {
		////return
	}
	_, err = file.WriteString("\n")
	if IsError(err) {
		////return
	}

	// save changes
	err = file.Sync()
	if IsError(err) {
		////return
	}

	//Println("==> done writing to file")
}
func Println(msg string) {
	if Debug == 1 {
		fmt.Println(msg)
	}
}
func DeleteFile(path string) {
	// delete file
	var err = os.Remove(path)
	if IsError(err) {
		//return
	}

	Println("==> done deleting file")

}
func DeleteForder(path string) {
	var cmd = "rm -rf " + path
	var log = "/admin/monitor/log/log_launcher"
	_, err := exec.Command("sh", "-c", cmd).Output()
	if err != nil {
		fmt.Println("Delete forder error,Path:" + path)
		Write_log("Delete forder  file error,Path:"+path, log)
	} else {
		Println("Delete forder Done ")
	}
}
func CoppyFile(path string, id int) {
	var cmd = "mv " + path + " /admin/monitor/backup/Config_" + strconv.Itoa(id) + ".txt"
	var log = "/admin/monitor/log/log_launcher"
	_, err := exec.Command("sh", "-c", cmd).Output()
	if err != nil {
		fmt.Println("Move file error,Path:" + path)
		Write_log("Move file error,Path:"+path, log)
	} else {
		fmt.Println("Move file error,Path:" + path)
		Write_log("Move file error,Path:"+path, log)
	}
}
func IsError(err error) bool {
	if err != nil {
		if Debug == 1 {
			fmt.Println(err.Error())
		}

	}

	return (err != nil)
}
func Check_path(path string) {
	// Check directory ?
	_, err := exec.Command("sh", "-c", "cd "+path).Output()
	if err != nil {

		fmt.Println(path + " not Exits\n")

		_, err1 := exec.Command("sh", "-c", "mkdir "+path).Output()
		if err1 != nil {

			Println(" Cant create " + path)

		} else {

			Println(" Create forder " + path)

		}
	} else {

		Println(path + " ok \n")

	}
}
func Check_dir(path string) {

	Println("Function Check_dir ()")

	//Println("------------>Check_dir <------------")
	var file, err = os.OpenFile(path, os.O_RDWR|os.O_APPEND, 0777)
	//Printf("Kieu file : %T\t", file)
	//Printf("Kieu file : %v\n", file)
	if IsError(err) {
		if Debug == 1 {
			fmt.Printf("%v", err)
		}

	}
	if file == nil {
		Create_file(path)
	}
	defer file.Close()
}

func ReadFile(path string) string {
	// re-open file
	var msg string = ""
	var file, err = os.OpenFile(path, os.O_RDWR, 0777)
	if err != nil {
		if Debug == 1 {
			Println(" Open file error")
		}

	} else {
		// read file, line by line
		var text = make([]byte, 2048)
		for {
			_, err = file.Read(text)
			// break if finally arrived at end of file
			if err == io.EOF {
				break
			}

			// break if error occured
			if err != nil && err != io.EOF {
				IsError(err)
				break
			}
		}
		msg = string(text)
	}
	defer file.Close()
	return msg
}