config.go

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"os"

	"go.uber.org/zap/zapcore"
)

type gameserverConfig struct {
	Instance string `json:"instance"`

	Log struct {
		Level   zapcore.Level `json:"level"`
		Config  string        `json:"config"`
		Colored bool          `json:"colored"`
		File    struct {
			Active bool `json:"active"`
		} `json:"file"`
		Sentry struct {
			Active bool   `json:"active"`
			DSN    string `json:"dsn"`
		} `json:"sentry"`
	} `json:"log"`

	Database struct {
		MariaDB struct {
			Host     string `json:"host"`
			User     string `json:"user"`
			Password string `json:"password"`
			Name     string `json:"name"`
		} `json:"mariadb"`
	} `json:"database"`

	Network struct {
		TCP struct {
			Addr string `json:"addr"`
		} `json:"tcp"`
		WS struct {
			Addr        string `json:"addr"`
			ValidOrigin string `json:"valid_origin"`
			TLS         struct {
				Active bool   `json:"active"`
				Cert   string `json:"cert"`
				PKey   string `json:"pkey"`
			} `json:"tls"`
			Flags struct {
				Debug bool `json:"debug"`
				Stats bool `json:"stats"`
			} `json:"flags"`
		} `json:"ws"`
	} `json:"network"`

	Battle struct {
		RoundID          int    `json:"round_id"`
		AvatarPictureURL string `json:"avatar_picture_url"`
	} `json:"battle"`
}

// loadConfig takes a path to a configfile and returns a
// pointer to a gameserverConfig
func loadConfig(path string) *gameserverConfig {
	f, err := ioutil.ReadFile(path) /* #nosec G304 */
	if err != nil {
		fmt.Println("failed to load config: " + err.Error())
		os.Exit(-1)
	}

	conf := &gameserverConfig{}
	err = json.Unmarshal(f, conf)
	if err != nil {
		fmt.Println("failed to unmarshal config file: " + err.Error())
		os.Exit(-1)
	}

	return conf
}