package models
 
 import "time"
 
 // Achievement 成就徽章
 type Achievement struct {
 	ID          string  `gorm:"primaryKey;type:varchar(50)" json:"id"`
 	Name        string  `gorm:"type:varchar(100);not null" json:"name"`
 	Description *string `gorm:"type:varchar(200)" json:"description,omitempty"`
 	Icon        *string `gorm:"type:varchar(50)" json:"icon,omitempty"`
 	Rarity      string  `gorm:"default:bronze;type:varchar(20)" json:"rarity"`
 	Condition   *string `gorm:"type:varchar(200)" json:"condition,omitempty"`
 
 	Users []UserAchievement `gorm:"foreignKey:AchievementID" json:"-"`
 }
 
 func (Achievement) TableName() string { return "achievements" }
 
 // UserAchievement 用户成就关联
 type UserAchievement struct {
 	UserID        string    `gorm:"column:user_id;type:varchar(32);not null;primaryKey"`
 	AchievementID string    `gorm:"column:achievement_id;type:varchar(50);not null;primaryKey"`
 	UnlockedAt    time.Time `gorm:"column:unlocked_at"`
 
 	User        User        `gorm:"foreignKey:UserID" json:"-"`
 	Achievement Achievement `gorm:"foreignKey:AchievementID" json:"-"`
 }
 
 func (UserAchievement) TableName() string { return "user_achievements" }