package user

import (
	"context"
	"fmt"
	"github.com/saas-mingyang/mingyang-admin-common/utils/pointy"
	"mingyang-admin-app-rpc/ent/predicate"
	"mingyang-admin-app-rpc/ent/user"
	"mingyang-admin-app-rpc/internal/util/dberrorhandler"

	"mingyang-admin-app-rpc/internal/svc"
	"mingyang-admin-app-rpc/types/app"

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

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

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

// ListUsers 分页查询用户信息
func (l *ListUsersLogic) ListUsers(in *app.PageUserRequest) (*app.PageUserResponse, error) {
	var predicates []predicate.User

	if in.Email != nil {
		predicates = append(predicates, user.EmailContains(*in.Email))
	}

	result, err := l.svcCtx.DB.User.Query().Where(predicates...).Page(l.ctx, in.Page, in.PageSize)
	if err != nil {
		return nil, dberrorhandler.DefaultEntError(l.Logger, err, in)
	}

	resp := &app.PageUserResponse{}
	// 在循环前添加验证
	if result == nil || result.List == nil {
		return resp, nil
	}
	fmt.Printf("result.List:%s\n", result.List)
	resp.Total = result.PageDetails.Total
	for _, v := range result.List {
		if v == nil {
			continue // 跳过 nil 项
		}
		// 确保结构体本身不为 nil
		userInfo := &app.UserInfo{
			Id:         &v.ID,
			Username:   &v.Username,
			Email:      &v.Email,
			IsVerified: &v.IsVerified,
		}

		// 处理时间字段
		if !v.CreatedAt.IsZero() {
			userInfo.CreatedAt = pointy.GetPointer(v.CreatedAt.UnixMilli())
		}
		if !v.UpdatedAt.IsZero() {
			userInfo.UpdatedAt = pointy.GetPointer(v.UpdatedAt.UnixMilli())
		}

		// 处理可能为 nil 的字段
		userInfo.Mobile = v.Mobile
		userInfo.Avatar = v.Avatar
		userInfo.NickName = v.Nickname
		// 处理枚举字段 - 使用类型断言确保安全
		if v.Gender != "" {
			if gender, ok := interface{}(v.Gender).(interface{ String() string }); ok {
				genderStr := gender.String()
				userInfo.Gender = &genderStr
			}
		}

		if v.AccountStatus != "" {
			if status, ok := interface{}(v.AccountStatus).(interface{ String() string }); ok {
				statusStr := status.String()
				userInfo.AccountStatus = &statusStr
			}
		}

		// 处理生日
		if v.Birthday != nil && !v.Birthday.IsZero() {
			userInfo.BirthdayAt = pointy.GetPointer(v.Birthday.UnixMilli())
		}
		resp.Data = append(resp.Data, userInfo)
	}
	return resp, nil
}