package logic

import (
	"context"

	"healthapi/internal/model"
	"healthapi/internal/svc"
	"healthapi/internal/types"
	"healthapi/pkg/errorx"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetMemberInfoLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetMemberInfoLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetMemberInfoLogic {
	return &GetMemberInfoLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetMemberInfoLogic) GetMemberInfo() (resp *types.MemberInfo, err error) {
	userID, err := GetUserIDFromCtx(l.ctx)
	if err != nil {
		return nil, errorx.ErrUnauthorized
	}

	var user model.User
	if err := l.svcCtx.DB.First(&user, userID).Error; err != nil {
		return nil, errorx.ErrUserNotFound
	}

	// 获取当前等级配置
	levelConfig := model.MemberLevelConfigs[user.MemberLevel]
	if levelConfig.Level == "" {
		levelConfig = model.MemberLevelConfigs[model.MemberLevelNormal]
	}

	// 计算下一等级信息
	nextLevel := ""
	nextLevelSpent := float64(0)
	switch user.MemberLevel {
	case model.MemberLevelNormal:
		nextLevel = model.MemberLevelSilver
		nextLevelSpent = 500 - user.TotalSpent
	case model.MemberLevelSilver:
		nextLevel = model.MemberLevelGold
		nextLevelSpent = 2000 - user.TotalSpent
	case model.MemberLevelGold:
		nextLevel = model.MemberLevelDiamond
		nextLevelSpent = 5000 - user.TotalSpent
	case model.MemberLevelDiamond:
		nextLevel = ""
		nextLevelSpent = 0
	}
	if nextLevelSpent < 0 {
		nextLevelSpent = 0
	}

	memberSince := ""
	if user.MemberSince != nil {
		memberSince = user.MemberSince.Format("2006-01-02")
	}

	resp = &types.MemberInfo{
		Level:            user.MemberLevel,
		LevelName:        levelConfig.Name,
		TotalSpent:       user.TotalSpent,
		Points:           user.Points,
		MemberSince:      memberSince,
		NextLevel:        nextLevel,
		NextLevelSpent:   nextLevelSpent,
		Discount:         levelConfig.Discount,
		PointsMultiplier: levelConfig.PointsMultiplier,
		FreeShippingMin:  levelConfig.FreeShippingMin,
	}

	return resp, nil
}