package model

import (
	"context"
	"git.noahlan.cn/northlan/ntools-go/gorm-zero/gormx"
	"git.noahlan.cn/northlan/ntools-go/uuid"
	"github.com/jinzhu/now"
	"github.com/pkg/errors"
	"gorm.io/gorm"
	"live-service/common/nerr"
	"live-service/common/timex"
	"time"
)

var _ UserEliteModel = (*customUserEliteModel)(nil)

type (
	// UserEliteModel is an interface to be customized, add more methods here,
	// and implement the added methods in customUserEliteModel.
	UserEliteModel interface {
		userEliteModel
		// FindByUserId 查找用户所有列表
		FindByUserId(ctx context.Context, tx *gorm.DB, userId int64) ([]UserElite, error)
		// Addon 添加新的或延长时间
		Addon(ctx context.Context, tx *gorm.DB, userId, eliteId int64, duration time.Duration, forever bool) error
	}

	customUserEliteModel struct {
		*defaultUserEliteModel
	}
)

// NewUserEliteModel returns a model for the database table.
func NewUserEliteModel(conn *gorm.DB) UserEliteModel {
	return &customUserEliteModel{
		defaultUserEliteModel: newUserEliteModel(conn),
	}
}

func (m *customUserEliteModel) FindByUserId(ctx context.Context, tx *gorm.DB, userId int64) ([]UserElite, error) {
	var resp []UserElite
	err := gormx.WithTx(ctx, m.DB, tx).Table(m.table).
		Where("user_id = ?", userId).Find(&resp).Error
	err = gormx.WrapSelectErr(err)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (m *customUserEliteModel) Addon(ctx context.Context, tx *gorm.DB, userId, eliteId int64, duration time.Duration, forever bool) error {
	return m.TransactCtx(ctx, tx, func(tx *gorm.DB) error {
		userElite, err := m.FindOneByUserIdEliteId(ctx, tx, userId, eliteId)
		if err != nil {
			if !errors.Is(err, gormx.ErrNotFound) {
				return nerr.NewWithCode(nerr.DBError)
			}
		}
		today := now.BeginningOfDay()

		if userElite == nil {
			err = m.Insert(ctx, tx, &UserElite{
				Id:        uuid.NextId(),
				UserId:    userId,
				EliteId:   eliteId,
				Forever:   BitBool(forever),
				StartTime: today,
				EndTime:   today.Add(duration),
			})
			if err != nil {
				return nerr.NewWithCode(nerr.DBError)
			}
		} else {
			// update
			if !timex.DayExpire(today, userElite.EndTime, bool(userElite.Forever)) {
				// 未过期,endTime直接添加1day
				userElite.EndTime = userElite.EndTime.Add(duration)
				err = m.Update(ctx, tx, userElite)
				if err != nil {
					return nerr.NewWithCode(nerr.DBError)
				}
			} else {
				// 过期，更新日期
				err = m.Update(ctx, tx, &UserElite{
					Id:        userElite.Id,
					UserId:    userId,
					EliteId:   eliteId,
					Forever:   BitBool(forever),
					StartTime: today,
					EndTime:   today.Add(duration),
				})
				if err != nil {
					return nerr.NewWithCode(nerr.DBError)
				}
			}
		}
		return nil
	})
}