ships_backend/internal/config/config.go

package config

import (
	"encoding/json"
	"io/ioutil"
	"log"
	"os"
)

const ConfigPath string = "config.json"

type S_Config struct {
	Address     string `json:"Address"`
	AdminSecret string `json:"AdminSecret"`

	MaxLobbies int `json:"MaxLobbies"`
	MaxPlayers int `json:"MaxPlayers"`
}

var Config S_Config

func initialize() error {
	configExists, err := os.Open(ConfigPath)

	if err != nil {
		log.Println("management.initialize: new deployment: building config")

		configNew, err := os.OpenFile("config.json", os.O_CREATE|os.O_WRONLY, 0644)
		if err == nil {
			Config.Address = ":8080"
			Config.AdminSecret = "netadmin"

			configByte, err := json.MarshalIndent(Config, "", " ")
			if err != nil {
				log.Fatal("config.initialize: could not Marshall Settings: ", err)
				return err
			}
			configNew.Write(configByte)
		} else {
			log.Fatal("config.initialize: could not create new config.json file: ", err)
			return err
		}

		defer configNew.Close()
	} else {
		configByte, err := ioutil.ReadAll(configExists)
		if err != nil {
			log.Fatal("config.initialize: could not read config: ", err)
			return err
		}

		json.Unmarshal(configByte, &Config)

		defer configExists.Close()
	}

	return nil
}

func ReadConfig() {
	// If doesnt exist, write default config

	initialize()
}