package dao

import (
	"errors"
	"fmt"
	"yintai-api/app/common/model"

	"gorm.io/gorm"
)

type User struct {
	db *gorm.DB
}

func NewUser(db ...*gorm.DB) *User {
	return &User{db: getDB(db...)}
}

func (r *User) TableName() string {
	return "yt_user"
}

func (r *User) Create(m *model.User) error {
	return r.db.Table(r.TableName()).Create(m).Error
}

func (r *User) Update(m *model.User) error {
	return r.db.Table(r.TableName()).Save(m).Error
}

func (r *User) Delete(id int64) error {
	return r.db.Table(r.TableName()).Where("id = ?", id).Delete(&User{}).Error
}

func (r *User) BatchDelete(ids []int64) error {
	return r.db.Table(r.TableName()).Where("id in (?)", ids).Delete(&User{}).Error
}

func (r *User) Get(id int64) (*model.User, error) {
	var res model.User
	if err := r.db.Table(r.TableName()).Where("id = ?", id).First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return &res, nil
}

func (r *User) AccountGet(account string) (*model.User, error) {
	var res model.User
	if err := r.db.Table(r.TableName()).Where("account = ?", account).First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return &res, nil
}

func (r *User) GetWithRole(account string) (*model.UserWithRole, error) {
	var res *model.UserWithRole
	tx := r.db.Table(r.TableName()+" as u ").Where("u.account = ?", account).Where("u.status = ?", model.UserStatusNormal)
	tx = tx.Joins(fmt.Sprintf(" LEFT JOIN %s AS ur ON ur.user_id = u.id", NewUserRole().TableName()))
	tx = tx.Joins(fmt.Sprintf(" LEFT JOIN %s AS r ON r.id = ur.role_id", NewRole().TableName()))

	if err := tx.Select("u.*,r.id as role_id,r.name as role_name").First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return res, nil
}

func (r *User) GetUserId(userId int64) (*model.UserWithRole, error) {
	var res *model.UserWithRole
	tx := r.db.Table(r.TableName()+" as u ").Where("u.id = ?", userId).Where("u.status = ?", model.UserStatusNormal)
	tx = tx.Joins(fmt.Sprintf(" LEFT JOIN %s AS ur ON ur.user_id = u.id", NewUserRole().TableName()))
	tx = tx.Joins(fmt.Sprintf(" LEFT JOIN %s AS r ON r.id = ur.role_id", NewRole().TableName()))

	if err := tx.Select("u.*,r.id as role_id,r.name as role_name").First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return res, nil
}

func (r *User) Exists(id int64) (bool, error) {
	var count int64
	if err := r.db.Table(r.TableName()).Where("id = ?", id).Count(&count).Error; err != nil {
		return false, err
	}
	return count > 0, nil
}

func (r *User) AccountExists(account string) (bool, error) {
	var count int64
	if err := r.db.Table(r.TableName()).Where("account = ?", account).Count(&count).Error; err != nil {
		return false, err
	}
	return count > 0, nil
}

func (r *User) List(username, account string, role int64, page, size int, sort string) ([]*model.UserWithRole, int64, error) {
	var res []*model.UserWithRole
	var count int64
	tx := r.db.Table(r.TableName() + " as u")
	tx = tx.Joins(fmt.Sprintf(" LEFT JOIN %s AS ur ON ur.user_id = u.id", NewUserRole().TableName()))
	tx = tx.Joins(fmt.Sprintf(" LEFT JOIN %s AS r ON r.id = ur.role_id", NewRole().TableName()))

	if username != "" {
		tx = tx.Where("u.username LIKE ?", fmt.Sprintf("%%%s%%", username))
	}

	if account != "" {
		tx = tx.Where("u.account LIKE ?", fmt.Sprintf("%%%s%%", account))
	}

	if role != 0 {
		tx = tx.Where("r.role = ?", role)
	}

	if err := tx.Count(&count).Error; err != nil {
		return nil, 0, err
	}

	tx = tx.Order("id DESC")
	if sort != "" {
		tx = tx.Order(sort)
	}

	if err := tx.Limit(size).Offset((page - 1) * size).Select("u.*,r.id as role_id,r.name as role_name").Find(&res).Error; err != nil {
		return nil, 0, err
	}
	return res, count, nil
}