valera/internal/config/config.go

package config

import (
	"io/ioutil"
	"strings"
)

type AppConfig struct {
	MongoConfig *MongoConfig
	TgConfig    *TgConfig
}

type MongoConfig struct {
	URL                    string
	DBName                 string
	ChatsCollectionName    string
	WorkoutsCollectionName string
	CaloriesCollectionName string
}

type TgConfig struct {
	Token string
}

func NewAppConfig() *AppConfig {
	mongoURL, err := readFile("mongo_url.txt")
	if err != nil {
		panic(err)
	}
	mongoURL = strings.ReplaceAll(mongoURL, "\n", "")

	dbName, err := readFile("db_name.txt")
	if err != nil {
		panic(err)
	}
	dbName = strings.ReplaceAll(dbName, "\n", "")

	token, err := readFile("token.txt")
	if err != nil {
		panic(err)
	}
	token = strings.ReplaceAll(token, "\n", "")

	return &AppConfig{
		MongoConfig: &MongoConfig{
			URL:                    mongoURL,
			DBName:                 dbName,
			ChatsCollectionName:    "chats",
			WorkoutsCollectionName: "workouts",
			CaloriesCollectionName: "calories",
		},
		TgConfig: &TgConfig{
			Token: token,
		},
	}
}

func readFile(filename string) (string, error) {
	b, err := ioutil.ReadFile(filename)
	if err != nil {
		return "", err
	}
	str := string(b)
	return str, nil
}