import { ValidationError } from '../errors';

const reasonForChangePropertyOnly = [
	'concurrency-detected',
	'b2b-account-created',
	'passwordless-signup',
	'sso-auto-link'
];

const requiresAllProperties = [
	'masquerader-requested',
	'owner-requested',
	'reset-password'
];

interface ReasonForChangeOnly {
	reasonForChange: string;
}

interface ChangePasswordBody {
	reasonForChange: string;
	password: string;
	oldPassword?: string;
	token?: string;
}

/** Class representing a ChangePassword body. */
export class ChangePassword {

	public reasonForChange: string;
	public password?: string;
	public oldPassword?: string;
	public token?: string;
	public body: ReasonForChangeOnly | ChangePasswordBody;

	constructor(reasonForChange: string, password?: string, oldPassword?: string, token?: string) {
		this.reasonForChange = reasonForChange;
		this.password = password;
		this.oldPassword = oldPassword;
		this.token = token;
		this.body = this.getBody();
	}

	public getBody (): ReasonForChangeOnly | ChangePasswordBody  {

		if (reasonForChangePropertyOnly.includes(this.reasonForChange)) {
			return { reasonForChange: this.reasonForChange };
		}

		if (requiresAllProperties.includes(this.reasonForChange)) {
			if (!this.password || (!this.oldPassword && !this.token )) {
				throw new ValidationError(`In order to change a user\'s password, with the reason for change of ${this.reasonForChange}, you need a password AND (oldPassword OR token) properties`);
			} else {
				return {
					reasonForChange: this.reasonForChange,
					password: this.password,
					token: this.token,
					oldPassword: this.oldPassword
				};
			}
		}

		throw new ValidationError(`Reason for change of ${this.reasonForChange} is not found`);
	}
}