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 _ UserTitleModel = (*customUserTitleModel)(nil)

const (
	TitleTypeDefault = "default" // 默认类型 可购买
	TitleTypeRank    = "rank"    // 排行榜类型 不可购买
	TitleTypeCustom  = "custom"  // 自定义类型 不可购买
)

type (
	// UserTitleModel is an interface to be customized, add more methods here,
	// and implement the added methods in customUserTitleModel.
	UserTitleModel interface {
		userTitleModel
		// FindMaxSort 寻找当前用户的最大Sort 最小值2
		FindMaxSort(ctx context.Context, tx *gorm.DB, userId int64) int64
		// FindOneByUserIdSort 通过用户和排序号找寻称号
		FindOneByUserIdSort(ctx context.Context, tx *gorm.DB, userId int64, sort int64) (*UserTitle, error)
		// FindByUserId 查找用户所有列表,按sort升序排列
		FindByUserId(ctx context.Context, tx *gorm.DB, userId int64) ([]UserTitle, error)
		// Addon 添加新的或延长时间
		Addon(ctx context.Context, tx *gorm.DB, userId, titleId int64, titleType string, duration time.Duration, forever bool) error
	}

	customUserTitleModel struct {
		*defaultUserTitleModel
	}
)

// NewUserTitleModel returns a model for the database table.
func NewUserTitleModel(conn *gorm.DB) UserTitleModel {
	return &customUserTitleModel{
		defaultUserTitleModel: newUserTitleModel(conn),
	}
}

func (m *customUserTitleModel) FindMaxSort(ctx context.Context, tx *gorm.DB, userId int64) int64 {
	db := gormx.WithTx(ctx, m.DB, tx)
	var resp int64 = 0

	db.Table(m.table).
		Select("MAX(sort)").
		Where("user_id = ?", userId).Take(&resp)

	return resp
}

func (m *customUserTitleModel) FindOneByUserIdSort(ctx context.Context, tx *gorm.DB, userId int64, sort int64) (*UserTitle, error) {
	db := gormx.WithTx(ctx, m.DB, tx)
	var resp UserTitle
	err := db.Model(&UserTitle{}).
		Where("user_id = ? and sort = ?", userId, sort).Take(&resp).Error
	err = gormx.WrapSelectErr(err)
	if err != nil {
		return nil, err
	}
	return &resp, nil
}

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

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

		if userTitle == nil {
			// sort
			maxSort := m.FindMaxSort(ctx, tx, userId)
			err = m.Insert(ctx, tx, &UserTitle{
				Id:        uuid.NextId(),
				UserId:    userId,
				TitleId:   titleId,
				Sort:      maxSort + 1,
				Type:      titleType,
				Forever:   BitBool(forever),
				StartTime: today,
				EndTime:   today.Add(duration),
			})
			if err != nil {
				return nerr.NewWithCode(nerr.DBError)
			}
		} else {
			// update
			if !timex.DayExpire(today, userTitle.EndTime, bool(userTitle.Forever)) {
				// 未过期,endTime直接添加1day
				userTitle.EndTime = userTitle.EndTime.Add(duration)
				err = m.Update(ctx, tx, userTitle)
				if err != nil {
					return nerr.NewWithCode(nerr.DBError)
				}
			} else {
				// 过期，更新日期
				err = m.Update(ctx, tx, &UserTitle{
					Id:        userTitle.Id,
					UserId:    userId,
					TitleId:   titleId,
					Sort:      userTitle.Sort,
					Type:      titleType,
					Forever:   BitBool(forever),
					StartTime: today,
					EndTime:   today.Add(duration),
				})
				if err != nil {
					return nerr.NewWithCode(nerr.DBError)
				}
			}
		}
		return nil
	})
}