config

type AppConfig struct {
	Name    string `config:"name"`
	Version string `config:"version"`
	Debug   bool   `config:"debug"`
	Server  struct {
		Port    int           `config:"port"`
		Timeout time.Duration `config:"timeout"`
		Host    string        `config:"host"`
	} `config:"server"`
	Database struct {
		DSN      string `config:"dsn"`
		MaxConns int    `config:"max_conns"`
		MaxIdle  int    `config:"max_idle"`
	} `config:"database"`
	Features []string               `config:"features"`
	Options  map[string]interface{} `config:"options"`
}

type Configuration struct {
	// contains filtered or unexported fields
}

type Option func(*Configuration)

type Provider interface {
	// Get 获取配置项的值
	Get(key string) (interface{}, bool)

	// GetString 获取字符串配置
	GetString(key string) string

	// GetInt 获取整数配置
	GetInt(key string) int

	// GetFloat 获取浮点数配置
	GetFloat(key string) float64

	// GetBool 获取布尔配置
	GetBool(key string) bool

	// GetDuration 获取时间段配置
	GetDuration(key string) time.Duration

	// GetStringSlice 获取字符串切片配置
	GetStringSlice(key string) []string

	// GetStringMap 获取字符串映射配置
	GetStringMap(key string) map[string]interface{}

	// Set 设置配置项的值
	Set(key string, value interface{})

	// Has 检查配置项是否存在
	Has(key string) bool

	// AllSettings 获取所有配置
	AllSettings() map[string]interface{}

	// AllKeys 获取所有配置键
	AllKeys() []string

	// AddChangeListener 添加配置变更监听器
	AddChangeListener(listener func(key string))

	// RemoveChangeListener 移除配置变更监听器
	RemoveChangeListener(listener func(key string))

	// Unmarshal 将配置反序列化到结构体
	Unmarshal(key string, v interface{}) error
}