package main

import (
	"os"

	"github.com/goccy/go-json"
)

type Config struct {
	Server   ServerConfig   `json:"server"`
	Database DatabaseConfig `json:"database"`
	Web      WebConfig      `json:"web"`
	Game     GameConfig     `json:"game"`
}

type ServerConfig struct {
	Port            int `json:"port"`
	MaxClients      int `json:"max_clients"`
	MaxWorldServers int `json:"max_world_servers"`
}

type DatabaseConfig struct {
	Path string `json:"path"`
}

type WebConfig struct {
	Enabled  bool   `json:"enabled"`
	Address  string `json:"address"`
	Port     int    `json:"port"`
	CertFile string `json:"cert_file"`
	KeyFile  string `json:"key_file"`
	Username string `json:"username"`
	Password string `json:"password"`
}

type GameConfig struct {
	AllowAccountCreation     bool   `json:"allow_account_creation"`
	ExpansionFlag            uint32 `json:"expansion_flag"`
	CitiesFlag               uint8  `json:"cities_flag"`
	DefaultSubscriptionLevel uint32 `json:"default_subscription_level"`
	EnabledRaces             uint32 `json:"enabled_races"`
	MaxCharactersPerAccount  int    `json:"max_characters_per_account"`
}

func LoadConfig(filename string) (*Config, error) {
	data, err := os.ReadFile(filename)
	if err != nil {
		// Return default config if file doesn't exist
		return getDefaultConfig(), nil
	}

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

	return &config, nil
}

func getDefaultConfig() *Config {
	return &Config{
		Server: ServerConfig{
			Port:            5998,
			MaxClients:      1000,
			MaxWorldServers: 10,
		},
		Database: DatabaseConfig{
			Path: "login.db",
		},
		Web: WebConfig{
			Enabled:  true,
			Address:  "0.0.0.0",
			Port:     8080,
			Username: "admin",
			Password: "password",
		},
		Game: GameConfig{
			AllowAccountCreation:     true,
			ExpansionFlag:            0x7CFF,
			CitiesFlag:               0xFF,
			DefaultSubscriptionLevel: 0xFFFFFFFF,
			EnabledRaces:             0xFFFF,
			MaxCharactersPerAccount:  7,
		},
	}
}