package config

import (
	"errors"
	"os"

	"github.com/spf13/viper"
)

type Config struct {
	Server   string
	Port     uint16
	Username string
	Privkey  string
	Nick     string
	Channel  string
}

func LoadConfigFile(path string) (Config, error) {
	viper.SetDefault("Server", "tilde.town")
	viper.SetDefault("Port", 22)

	viper.SetConfigName("config")
	viper.SetConfigType("toml")
	viper.AddConfigPath(".")
	viper.AddConfigPath(os.ExpandEnv("$HOME/.config/hubbub"))
	if path != "" {
		viper.SetConfigFile(path)
	}

	var config Config
	if err := viper.ReadInConfig(); err != nil {
		return config, err
	}
	if err := viper.Unmarshal(&config); err != nil {
		return config, err
	}

	if config.Username == "" {
		return config, errors.New("username is required")
	}
	if config.Privkey == "" {
		return config, errors.New("privkey is required")
	}
	if config.Nick == "" {
		return config, errors.New("nick is required")
	}
	if config.Channel == "" {
		return config, errors.New("channel is required")
	}

	return config, nil
}