GoEthemineTelegramBot/settings.go

package main

import (
	"os"
	"fmt"
	"log"
	"encoding/json"

)

type Settings struct{
	Token 		string
	ApiUrl 		string

	DbHost 		string
	DbUser		string `json:"-"`
	DbPassword 	string `json:"-"`
	DbName 		string

	FullLogPath 	string
	ErrorLogPath 	string

	Currency 	string
}

func (s *Settings) LoadFromFile(filepath string) {
	b, err := os.ReadFile(filepath)
    if err != nil {
     	if err.Error() == fmt.Sprintf("open %s: The system cannot find the file specified.", filepath) {
	    	err = nil
	    	path, err := os.Getwd()
			if err != nil {
		    	log.Panic(err)
		   	}
			path += "\\"+ filepath
	     	fmt.Printf("The system cannot find the config file.\nCreating new config file at:\n%s\n",
	      		path)
	      	s.SaveToFile(path)
	      	log.Fatal("Please fill the config file")	
	    } else {
		    log.Panic(err)
	    } 
      return
    }
    propJson := string(b)

	json.Unmarshal([]byte(propJson), &s)
	s.SaveToFile(filepath)
}

func (s *Settings) SaveToFile(filepath string) {
	res, err := json.MarshalIndent(s, "", "    ")
	if err != nil {
        log.Panic(err)
    }

    err = os.WriteFile(filepath, res, 0666)
    if err != nil {
		log.Fatal(err)
	}
}