package model

import (
	"time"

	"gorm.io/gorm"
)

// User 用户表
type User struct {
	gorm.Model
	Phone           string `gorm:"uniqueIndex;size:20" json:"phone"`
	Email           string `gorm:"uniqueIndex;size:100" json:"email"`
	PasswordHash    string `gorm:"size:255" json:"-"`
	Nickname        string `gorm:"size:50" json:"nickname"`
	Avatar          string `gorm:"size:255" json:"avatar"`
	SurveyCompleted bool   `gorm:"default:false" json:"survey_completed"`
	// 会员相关字段
	MemberLevel string     `gorm:"size:20;default:normal" json:"member_level"` // normal/silver/gold/diamond
	TotalSpent  float64    `gorm:"default:0" json:"total_spent"`               // 累计消费金额
	Points      int        `gorm:"default:0" json:"points"`                    // 当前积分
	MemberSince *time.Time `json:"member_since"`                               // 首次消费时间
}

// 会员等级常量
const (
	MemberLevelNormal  = "normal"  // 普通用户
	MemberLevelSilver  = "silver"  // 银卡会员
	MemberLevelGold    = "gold"    // 金卡会员
	MemberLevelDiamond = "diamond" // 钻石会员
)

// MemberLevelConfig 会员等级配置
type MemberLevelConfig struct {
	Level            string  // 等级标识
	Name             string  // 等级名称
	MinSpent         float64 // 升级所需累计消费
	Discount         float64 // 折扣率 (0.92-1.0)
	PointsMultiplier float64 // 积分倍率
	FreeShippingMin  float64 // 包邮门槛
}

// MemberLevelConfigs 会员等级配置表
var MemberLevelConfigs = map[string]MemberLevelConfig{
	MemberLevelNormal: {
		Level:            MemberLevelNormal,
		Name:             "普通用户",
		MinSpent:         0,
		Discount:         1.0,
		PointsMultiplier: 1.0,
		FreeShippingMin:  99,
	},
	MemberLevelSilver: {
		Level:            MemberLevelSilver,
		Name:             "银卡会员",
		MinSpent:         500,
		Discount:         0.98,
		PointsMultiplier: 1.2,
		FreeShippingMin:  69,
	},
	MemberLevelGold: {
		Level:            MemberLevelGold,
		Name:             "金卡会员",
		MinSpent:         2000,
		Discount:         0.95,
		PointsMultiplier: 1.5,
		FreeShippingMin:  49,
	},
	MemberLevelDiamond: {
		Level:            MemberLevelDiamond,
		Name:             "钻石会员",
		MinSpent:         5000,
		Discount:         0.92,
		PointsMultiplier: 2.0,
		FreeShippingMin:  0, // 全场包邮
	},
}

// GetMemberLevelBySpent 根据累计消费获取会员等级
func GetMemberLevelBySpent(totalSpent float64) string {
	if totalSpent >= 5000 {
		return MemberLevelDiamond
	} else if totalSpent >= 2000 {
		return MemberLevelGold
	} else if totalSpent >= 500 {
		return MemberLevelSilver
	}
	return MemberLevelNormal
}

// HealthProfile 健康档案
type HealthProfile struct {
	gorm.Model
	UserID        uint       `gorm:"uniqueIndex" json:"user_id"`
	Name          string     `gorm:"size:50" json:"name"`
	BirthDate     *time.Time `json:"birth_date"`
	Gender        string     `gorm:"size:10" json:"gender"` // male, female
	Height        float64    `json:"height"`                // cm
	Weight        float64    `json:"weight"`                // kg
	BMI           float64    `json:"bmi"`
	BloodType     string     `gorm:"size:10" json:"blood_type"` // A, B, AB, O
	Occupation    string     `gorm:"size:50" json:"occupation"`
	MaritalStatus string     `gorm:"size:20" json:"marital_status"` // single, married, divorced
	Region        string     `gorm:"size:100" json:"region"`
}

// LifestyleInfo 生活习惯
type LifestyleInfo struct {
	gorm.Model
	UserID              uint   `gorm:"uniqueIndex" json:"user_id"`
	SleepTime           string `gorm:"size:10" json:"sleep_time"`         // HH:MM
	WakeTime            string `gorm:"size:10" json:"wake_time"`          // HH:MM
	SleepQuality        string `gorm:"size:20" json:"sleep_quality"`      // good, normal, poor
	MealRegularity      string `gorm:"size:20" json:"meal_regularity"`    // regular, irregular
	DietPreference      string `gorm:"size:50" json:"diet_preference"`    // 偏好
	DailyWaterML        int    `json:"daily_water_ml"`                    // 每日饮水量 ml
	ExerciseFrequency   string `gorm:"size:20" json:"exercise_frequency"` // never, sometimes, often, daily
	ExerciseType        string `gorm:"size:100" json:"exercise_type"`
	ExerciseDurationMin int    `json:"exercise_duration_min"` // 每次运动时长
	IsSmoker            bool   `json:"is_smoker"`
	AlcoholFrequency    string `gorm:"size:20" json:"alcohol_frequency"` // never, sometimes, often
}

// TableName 指定表名
func (User) TableName() string {
	return "users"
}

func (HealthProfile) TableName() string {
	return "health_profiles"
}

func (LifestyleInfo) TableName() string {
	return "lifestyle_infos"
}