package model

import "time"

// Proxy stores network proxy configurations for task execution.
type Proxy struct {
	ID            uint       `gorm:"primaryKey;autoIncrement" json:"id"`
	Name          string     `gorm:"size:100;not null" json:"name"`
	Protocol      string     `gorm:"size:20;not null;default:'http'" json:"protocol"` // http / https / socks5
	Host          string     `gorm:"size:255;not null" json:"host"`
	Port          int        `gorm:"not null" json:"port"`
	Username      string     `gorm:"size:100" json:"username"`
	Password      string     `gorm:"size:100" json:"password"`
	Region        string     `gorm:"size:50" json:"region"`   // 地区标签，如 US / HK / JP
	Enabled       bool       `gorm:"default:true" json:"enabled"`
	Status        string     `gorm:"size:20;default:'unknown'" json:"status"` // unknown / ok / fail
	LastCheckedAt *time.Time `json:"last_checked_at"`
	Remark        string     `gorm:"size:500" json:"remark"`
	CreatedAt     time.Time  `json:"created_at"`
	UpdatedAt     time.Time  `json:"updated_at"`
}

func (Proxy) TableName() string { return "proxies" }

// ProxyURL returns the full proxy URL string for HTTP clients.
func (p Proxy) ProxyURL() string {
	auth := ""
	if p.Username != "" {
		auth = p.Username
		if p.Password != "" {
			auth += ":" + p.Password
		}
		auth += "@"
	}
	return p.Protocol + "://" + auth + p.Host + ":" + itoa(p.Port)
}

func itoa(n int) string {
	if n == 0 {
		return "0"
	}
	s := ""
	for n > 0 {
		s = string(rune('0'+n%10)) + s
		n /= 10
	}
	return s
}