package model

import (
	"time"

	"gorm.io/gorm"
)

// 用户角色
const (
	RoleAdmin      = "admin"      // 管理员
	RoleDistributor = "distributor" // 分销商
)

// User 系统用户
type User struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	Username     string `gorm:"uniqueIndex;size:64;not null" json:"username"`
	PasswordHash string `gorm:"size:255;not null" json:"-"`
	Nickname     string `gorm:"size:64" json:"nickname"`
	Role         string `gorm:"size:32;not null;default:distributor" json:"role"`
	Status       int    `gorm:"default:1" json:"status"` // 1启用 0禁用
	InviteCode   string `gorm:"uniqueIndex;size:32" json:"invite_code"`
	ParentID     *uint  `gorm:"index" json:"parent_id"` // 上级分销商
}

// Skin 游戏皮肤商品
type Skin struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	Name        string  `gorm:"size:128;not null" json:"name"`              // 中文名（展示用，保持原名）
	SKU         string  `gorm:"uniqueIndex;size:64;not null" json:"sku"`    // 英文固定标识
	Game        string  `gorm:"size:64;index" json:"game"`                  // 所属游戏
	Category    string  `gorm:"size:64;index" json:"category"`              // 品类：套装/背包/...
	CoverURL    string  `gorm:"size:512" json:"cover_url"`
	Price       float64 `gorm:"not null;default:0" json:"price"`            // 售价
	CostPrice   float64 `gorm:"default:0" json:"cost_price"`                // 成本价
	Commission  float64 `gorm:"default:0" json:"commission"`                // 佣金比例 0-1
	Stock       int     `gorm:"default:0" json:"stock"`                     // -1 无限
	Status      int     `gorm:"default:1" json:"status"`                    // 1上架 0下架
	Description string  `gorm:"type:text" json:"description"`
}

// Order 订单
type Order struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	OrderNo        string  `gorm:"uniqueIndex;size:64;not null" json:"order_no"`
	SkinID         uint    `gorm:"index;not null" json:"skin_id"`
	Skin           *Skin   `gorm:"foreignKey:SkinID" json:"skin,omitempty"`
	DistributorID  uint    `gorm:"index;not null" json:"distributor_id"`
	Distributor    *User   `gorm:"foreignKey:DistributorID" json:"distributor,omitempty"`
	BuyerName      string  `gorm:"size:64" json:"buyer_name"`
	Amount         float64 `gorm:"not null" json:"amount"`
	CommissionAmt  float64 `gorm:"default:0" json:"commission_amt"`
	Status         string  `gorm:"size:32;default:pending" json:"status"` // pending/paid/delivered/cancelled
	Remark         string  `gorm:"size:255" json:"remark"`
}

// 订单状态
const (
	OrderStatusPending   = "pending"
	OrderStatusPaid      = "paid"
	OrderStatusDelivered = "delivered"
	OrderStatusCancelled = "cancelled"
)