// 经验变化日志表：sm_exp_change_log
package models

import "gorm.io/gorm"

type ExpChangeLog struct {
	gorm.Model
	UserID     uint   `gorm:"column:user_id;type:bigint unsigned;not null;index;comment:用户ID" json:"user_id" db:"user_id"`
	ChangeType string `gorm:"column:change_type;type:varchar(20);comment:变化类型 add/level_up/achievement" json:"change_type" db:"change_type"`
	ExpDelta   int    `gorm:"column:exp_delta;type:int;comment:经验变化量" json:"exp_delta" db:"exp_delta"`
	Source     string `gorm:"column:source;type:varchar(20);comment:来源 task/bill/mood/streak/achievement" json:"source" db:"source"`
	SourceID   string `gorm:"column:source_id;type:varchar(50);comment:关联记录ID" json:"source_id" db:"source_id"`
	BeforeExp  int    `gorm:"column:before_exp;type:int;comment:变化前经验" json:"before_exp" db:"before_exp"`
	AfterExp   int    `gorm:"column:after_exp;type:int;comment:变化后经验" json:"after_exp" db:"after_exp"`
	RecordDate string `gorm:"column:record_date;type:varchar(10);comment:记录日期" json:"record_date" db:"record_date"`
}