config.go

package main

import (
	"log"
	"os"

	"github.com/go-playground/validator/v10"
	"gopkg.in/yaml.v3"
)

type Config struct {
	IntervalSeconds int       `yaml:"intervalSeconds" validate:"required"`
	TeamSpeak       TeamSpeak `yaml:"teamSpeak"`
	Telegram        Telegram  `yaml:"telegram"`
}

type TeamSpeak struct {
	FavoriteUsers   []string `yaml:"favoriteUsers"`
	Address         string   `yaml:"address" validate:"required"`
	Username        string   `yaml:"username" validate:"required"`
	Password        string   `yaml:"password" validate:"required"`
	VirtualServerId string   `yaml:"virtualServerId" validate:"required"`
}

type Telegram struct {
	BotToken    string `yaml:"botToken" validate:"required"`
	ChatId      int64  `yaml:"chatId" validate:"required"`
	MessageId   int    `yaml:"messageId"`
	Separator   string `yaml:"separator" validate:"required"`
	ZeroUsers   string `yaml:"zeroUsers" validate:"required"`
	UpdateTitle bool   `yaml:"updateTitle"`
}

// loadConfig reads the config file
func loadConfig(configPath string) Config {
	file, err := os.ReadFile(configPath)
	if err != nil {
		log.Fatal(err)
	}

	var config Config

	if err := yaml.Unmarshal(file, &config); err != nil {
		log.Fatal(err)
	}

	return config
}

func (config *Config) validate() {
	validate := validator.New()
	if err := validate.Struct(config); err != nil {
		validationErrors := err.(validator.ValidationErrors)

		log.Fatalf("missing values in config\n%s", validationErrors)
	}
}