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Model,
DataTypes,
HasOneGetAssociationMixin,
HasOneSetAssociationMixin,
HasManySetAssociationsMixin,
HasManyAddAssociationMixin,
HasManyGetAssociationsMixin,
HasManyCountAssociationsMixin,
HasManyCreateAssociationMixin,
} from 'sequelize';
import {default as sequelize} from '@db';
import {InternalError} from '@errors';
import debug from 'debug';
import {ModelHooks} from 'sequelize/types/lib/hooks';
import {User, Membership, UserDto} from '@models';
const error = debug('group-car:group:error');
const log = debug('group-car:group');
/**
* Model for groups.
*/
export class Group extends Model {
/**
* Id of the group.
*
* Primary key.
*/
public id!: number;
/**
* The name of the group.
*
* Multiple groups can have the same name.
*/
public name!: string;
/**
* The description
*/
public description!: string;
/**
* The userId of the owner.
*
* In the beginning this id will reference the user which created the group.
* But the owner can transfer his/her ownership to another user of the group.
*/
public ownerId!: number;
/**
* Date when the group was created.
*/
public readonly createdAt!: Date;
/**
* Date when the group was last updated.
*/
public readonly updatedAt!: Date;
/**
* List of attributes which should be used if group reference is eagerly
* loaded.
*/
public static simpleAttributes = [
'id',
'name',
'description',
'ownerId',
'createdAt',
'updatedAt',
];
/**
* Gets the owner.
*/
public getOwner!: HasOneGetAssociationMixin<User>;
/**
* Sets the owner.
*/
public setOwner!: HasOneSetAssociationMixin<User, number>;
/**
* Set users.
*/
public setUsers!: HasManySetAssociationsMixin<User, number>;
/**
* Get users.
*/
public getUsers!: HasManyGetAssociationsMixin<User>;
/**
* Add user to list.
*/
public addUser!: HasManyAddAssociationMixin<User, number>;
/**
* Add users.
*/
public addUsers!: HasManyAddAssociationMixin<User[], number>;
/**
* Get amount of users.
*/
public countUsers!: HasManyCountAssociationsMixin;
/**
* Create new user for list.
*/
public createUser!: HasManyCreateAssociationMixin<User>;
/**
* User data of the owner.
*
* Only exists if explicitly included in query.
*/
public readonly Owner?: UserDto;
}
/**
* Creates a new membership for the owner/creator of the group for that
* group.
*
* Gives the owner/creator admin permissions.
* @param group - The newly created group
*/
export const createMembershipForOwner = (
group: Group,
): Promise<void> => {
return Membership.create({
groupId: group.id,
userId: group.ownerId,
isAdmin: true,
}).then(() => {
log(
'Created admin membership for user %d and group %d',
group.ownerId,
group.id,
);
return;
}).catch((err) => {
error(
'Couldn\'t create admin membership for user %d and group %d, error: %o',
group.ownerId,
group.id,
err,
);
throw new InternalError();
});
};
// Create the hooks object
const hooks: Partial<ModelHooks> = {
afterCreate: createMembershipForOwner,
};
/**
* Initialize the group model.
*/
Group.init(
{
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER,
},
name: {
allowNull: false,
type: DataTypes.STRING(30),
validate: {
notEmpty: true,
},
},
description: {
allowNull: true,
type: DataTypes.STRING(200),
},
},
{
sequelize,
modelName: 'group',
hooks: hooks,
},
);
export default Group;
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