config.go
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config.go
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	package config

	import (
	"gopkg.in/ini.v1"
	)

	const (
	configFile = "config.ini"
	)

	type (
	ServerCfg struct {
	Host string `ini:"host"`
	Port int `ini:"port"`
	}

	DatabaseCfg struct {
	Type string `ini:"type"`
	User string `ini:"username"`
	Pass string `ini:"password"`
	Host string `ini:"host"`
	Port int `ini:"port"`
	}

	AppCfg struct {
	MultiUser bool `ini:"multiuser"`
	OpenSignups bool `ini:"open_signups"`
	Federation bool `ini:"federation"`

	Name string `ini:"site_name"`

	JSDisabled bool `ini:"disable_js"`

	// User registration
	MinUsernameLen int `ini:"min_username_len"`
	}

	Config struct {
	Server ServerCfg `ini:"server"`
	Database DatabaseCfg `ini:"database"`
	App AppCfg `ini:"app"`
	}
	)

	func New() *Config {
	return &Config{
	Server: ServerCfg{
	Host: "http://localhost:8080",
	Port: 8080,
	},
	Database: DatabaseCfg{
	Type: "mysql",
	Host: "localhost",
	},
	App: AppCfg{
	Federation: true,
	MinUsernameLen: 3,
	},
	}
	}

	func Load() (*Config, error) {
	cfg, err := ini.Load(configFile)
	if err != nil {
	return nil, err
	}

	// Parse INI file
	uc := &Config{}
	err = cfg.MapTo(uc)
	if err != nil {
	return nil, err
	}
	return uc, nil
	}

	func Save(uc *Config) error {
	cfg := ini.Empty()
	err := ini.ReflectFrom(cfg, uc)
	if err != nil {
	return err
	}

	return cfg.SaveTo(configFile)
	}