package config

import (
	"flag"

	"github.com/kouhin/envflag"
	"github.com/valkey-io/valkey-go"
)

type Config struct {
	Database struct {
		Host     string
		Port     uint
		User     string
		Password string
		DBname   string
	}

	Valkey valkey.ClientOption

	API struct {
		Address   string
		Base      string
		TokenLife int
	}
}

var config *Config

func GetConfig() *Config {
	if config == nil {
		config = &Config{}

		if len(config.Valkey.InitAddress) == 0 {
			config.Valkey.InitAddress = make([]string, 1)
		}

		flag.StringVar(&config.Database.Host, "db-host", "db", "database host")
		flag.UintVar(&config.Database.Port, "db-port", 5432, "database port")
		flag.StringVar(&config.Database.User, "db-user", "admin", "database user")
		flag.StringVar(&config.Database.Password, "db-password", "admin", "database password")
		flag.StringVar(&config.Database.DBname, "db-name", "chat", "database name")

		flag.StringVar(&config.Valkey.InitAddress[0], "valkey-address", "valkey:6379", "Valkey server address")
		flag.StringVar(&config.Valkey.Username, "valkey-username", "", "Valkey username")
		flag.StringVar(&config.Valkey.Password, "valkey-password", "", "Valkey password")
		flag.IntVar(&config.Valkey.SelectDB, "valkey-db", 0, "Valkey database number")

		flag.StringVar(&config.API.Address, "api-address", ":5000", "API address")
		flag.StringVar(&config.API.Base, "api-base", "", "API path base")
		flag.IntVar(&config.API.TokenLife, "api-token-life", 24*60*60, "API login token lifetime in seconds")

		if err := envflag.Parse(); err != nil {
			panic(err)
		}

		flag.Parse()
	}

	return config
}