package subconfigs

import "fmt"

// DatabaseConfig 数据库配置
type DatabaseConfig struct {
	BaseConfig
	Type            string `yaml:"type"`
	Host            string `yaml:"host"`
	Port            int    `yaml:"port"`
	Username        string `yaml:"username"`
	Password        string `yaml:"password"`
	Database        string `yaml:"database"`
	MaxOpenConns    int    `yaml:"max_open_conns"`
	MaxIdleConns    int    `yaml:"max_idle_conns"`
	ConnMaxLifetime int    `yaml:"conn_max_lifetime"`
}

// NewDatabaseConfig 创建数据库配置实例
func NewDatabaseConfig() *DatabaseConfig {
	return &DatabaseConfig{}
}

// SetDefaults 设置默认值
func (c *DatabaseConfig) SetDefaults() {
	c.Type = "mysql"
	c.Port = 3306
	c.MaxOpenConns = 100
	c.MaxIdleConns = 20
	c.ConnMaxLifetime = 3600
}

// Load 从yaml数据加载
func (c *DatabaseConfig) Load(data map[string]interface{}) error {
	return c.LoadFromYAML(data, c)
}

// Validate 验证配置
func (c *DatabaseConfig) Validate() error {
	if c.Type == "" {
		return fmt.Errorf("database type is required")
	}
	return nil
}

// IsConfigured 判断是否已配置
func (c *DatabaseConfig) IsConfigured() bool {
	return c.Host != "" && c.Port > 0 && c.Username != "" && c.Database != ""
}

// 自动注册
func init() {
	Register("database", &DatabaseConfig{})
}