import { IsInt, IsNotEmpty, IsOptional, IsString } from 'class-validator';
import { getConnectionManager } from 'typeorm';
import { GroupContactNotFoundError, GroupContactWrongTypeError } from '../../../errors/GroupContactErrors';
import { GroupContact } from '../../entities/GroupContact';

/**
 * This classed is used to create a new RunnerGroup entity from a json body (post request).
 */
export abstract class CreateRunnerGroup {
    /**
     * The new group's name.
     */
    @IsNotEmpty()
    @IsString()
    name: string;

    /**
     * The new group's contact.
     * Optional
     */
    @IsInt()
    @IsOptional()
    contact?: number;

    /**
     * Gets the new group's contact by it's id.
     */
    public async getContact(): Promise<GroupContact> {
        if (this.contact === undefined || this.contact === null) {
            return null;
        }
        if (!isNaN(this.contact)) {
            let contact = await getConnectionManager().get().getRepository(GroupContact).findOne({ id: this.contact });
            if (!contact) { throw new GroupContactNotFoundError; }
            return contact;
        }

        throw new GroupContactWrongTypeError;
    }
}