All files / symbol-qr-library/src/schemas AddContactDataSchema.ts

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/**
 * Copyright 2019 NEM
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
// internal dependencies
import {
    ContactQR,
    QRCodeDataSchema,
    QRCodeType,
} from '../../index';
 
/**
 * Class `AddContactDataSchema` describes a contact
 * add QR code data schema.
 *
 * @since 0.3.0
 */
class AddContactDataSchema extends QRCodeDataSchema {
 
    constructor() {
        super();
    }
 
    /**
     * The `getData()` method returns an object
     * that will be stored in the `data` field of
     * the underlying QR Code JSON content.
     *
     * @return {any}
     */
    public getData(qr: ContactQR): any {
        return {
            "name": qr.name,
            "publicKey": qr.accountPublicKey,
        };
    }
 
    /**
     * Parse a JSON QR code content into a ContactQR
     * object.
     *
     * @param   json    {string}
     * @return  {ContactQR}
     * @throws  {Error}     On empty `json` given.
     * @throws  {Error}     On missing `type` field value.
     * @throws  {Error}     On unrecognized QR code `type` field value.
     */
    public static parse(
        json: string,
    ): ContactQR {
        Iif (! json.length) {
            throw Error('JSON argument cannot be empty.');
        }
 
        const jsonObj = JSON.parse(json);
        Iif (!jsonObj.type || jsonObj.type !== QRCodeType.AddContact) {
            throw Error('Invalid type field value for ContactQR.');
        }
 
        // read contact data
        const name = jsonObj.data.name;
        const network = jsonObj.network_id;
        const generationHash = jsonObj.chain_id;
 
        return new ContactQR(name, jsonObj.data.publicKey, network, generationHash);
    }
}
 
export {AddContactDataSchema};