package entities

import (
	"time"

	"gorm.io/gorm"
)

// UserInvoiceInfo 用户开票信息实体
type UserInvoiceInfo struct {
	ID             string         `gorm:"primaryKey;type:varchar(36)" json:"id"`
	UserID         string         `gorm:"uniqueIndex;type:varchar(36);not null" json:"user_id"`
	
	// 开票信息字段
	CompanyName    string `gorm:"type:varchar(200);not null" json:"company_name"`    // 公司名称
	TaxpayerID     string `gorm:"type:varchar(50);not null" json:"taxpayer_id"`      // 纳税人识别号
	BankName       string `gorm:"type:varchar(100)" json:"bank_name"`                // 开户银行
	BankAccount    string `gorm:"type:varchar(50)" json:"bank_account"`              // 银行账号
	CompanyAddress string `gorm:"type:varchar(500)" json:"company_address"`          // 企业地址
	CompanyPhone   string `gorm:"type:varchar(20)" json:"company_phone"`             // 企业电话
	ReceivingEmail string `gorm:"type:varchar(100);not null" json:"receiving_email"` // 发票接收邮箱
	
	// 元数据
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 指定表名
func (UserInvoiceInfo) TableName() string {
	return "user_invoice_info"
}

// IsComplete 检查开票信息是否完整
func (u *UserInvoiceInfo) IsComplete() bool {
	return u.CompanyName != "" && u.TaxpayerID != "" && u.ReceivingEmail != ""
}

// IsCompleteForSpecialInvoice 检查专票信息是否完整
func (u *UserInvoiceInfo) IsCompleteForSpecialInvoice() bool {
	return u.CompanyName != "" && u.TaxpayerID != "" && u.BankName != "" && 
		   u.BankAccount != "" && u.CompanyAddress != "" && u.CompanyPhone != "" && 
		   u.ReceivingEmail != ""
}

// GetMissingFields 获取缺失的字段
func (u *UserInvoiceInfo) GetMissingFields() []string {
	var missing []string
	if u.CompanyName == "" {
		missing = append(missing, "公司名称")
	}
	if u.TaxpayerID == "" {
		missing = append(missing, "纳税人识别号")
	}
	if u.BankName == "" {
		missing = append(missing, "开户银行")
	}
	if u.BankAccount == "" {
		missing = append(missing, "银行账号")
	}
	if u.CompanyAddress == "" {
		missing = append(missing, "企业地址")
	}
	if u.CompanyPhone == "" {
		missing = append(missing, "企业电话")
	}
	if u.ReceivingEmail == "" {
		missing = append(missing, "发票接收邮箱")
	}
	return missing
}