package config

import (
	"errors"
	"os"
)

type Config struct {
	DiscordToken     string
	LavalinkNodeName string
	LavalinkAddress  string
	LavalinkPassword string
	LavalinkSecure   bool
	Debug            bool
}

func Load() (Config, error) {
	token := os.Getenv("DISCORD_TOKEN")
	if token == "" {
		return Config{}, errors.New("DISCORD_TOKEN environment variable is required")
	}

	address := os.Getenv("LAVALINK_ADDRESS")
	if address == "" {
		return Config{}, errors.New("LAVALINK_ADDRESS environment variable is required")
	}

	password := os.Getenv("LAVALINK_PASSWORD")
	if password == "" {
		return Config{}, errors.New("LAVALINK_PASSWORD environment variable is required")
	}

	cfg := Config{
		DiscordToken:     token,
		LavalinkNodeName: envOrDefault("LAVALINK_NODE_NAME", "main"),
		LavalinkAddress:  address,
		LavalinkPassword: password,
		LavalinkSecure:   os.Getenv("LAVALINK_SECURE") == "true",
		Debug:            os.Getenv("DEBUG") == "true",
	}

	return cfg, nil
}

func envOrDefault(key, fallback string) string {
	if value := os.Getenv(key); value != "" {
		return value
	}
	return fallback
}