import { GraphQLError } from 'graphql';

export default class AuthorizationError extends GraphQLError {
  public readonly code: number = 403; 

  constructor(userRoles: string[], operationRoles: string[]) {
    super('Authorization error.');

    const opRolesStr = operationRoles.reduce((opStr: string, role: string) => {
      return opStr + role + ', ';
    },                                       '');

    const userRolesStr = userRoles.reduce((userStr: string, role: string) => {
      return userStr + role + ', ';
    },                                    '');

    this.message += ` The operation is not allowed for roles ${userRolesStr}. Supported roles: ${opRolesStr}`;
  }
}