package config

import (
	"time"
)

type Config struct {
	Server ServerConfig `yaml:"server"`
	Auth   AuthConfig   `yaml:"auth"`
	TLS    TLSConfig    `yaml:"tls"`
}

type ServerConfig struct {
	BindAddress  string        `yaml:"bind_address"`
	ReadTimeout  time.Duration `yaml:"read_timeout"`
	WriteTimeout time.Duration `yaml:"write_timeout"`
}

type AuthConfig struct {
	Mode  string `yaml:"mode"`
	Token string `yaml:"token,omitempty"`
}

type TLSConfig struct {
	Enabled  bool   `yaml:"enabled"`
	CertFile string `yaml:"cert_file"`
	KeyFile  string `yaml:"key_file"`
}

type ConfigLoader interface {
	LoadConfig() (*Config, error)
}

func DefaultConfig() *Config {
	return &Config{
		Server: ServerConfig{
			BindAddress:  ":8080",
			ReadTimeout:  15 * time.Second,
			WriteTimeout: 15 * time.Second,
		},
		Auth: AuthConfig{
			Mode: "none",
		},
		TLS: TLSConfig{
			Enabled: false,
		},
	}
}

func (c Config) applyDefaults() *Config {
	if c.Server.BindAddress == "" {
		c.Server.BindAddress = ":8080"
	}
	if c.Auth.Mode == "" {
		c.Auth.Mode = "none"
	}
	return &c
}