BikBikBikBikBik/blocke

/*
Copyright (C) 2017 BikBikBikBikBik

This file is part of blocke.

blocke is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

blocke is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with blocke.  If not, see <http://www.gnu.org/licenses/>.
*/
const ApiClientBase = require('./api-client-base');
const resources = require('./resources');

//ChainRadar uses some slightly different symbols...
// XDN === DUCK
// XMR === MRO
const _chainRadarValueDivisors = {
    aeon: 1000000000000,
    bcn: 100000000,
    duck: 100000000,
    mro: 1000000000000
};

function handleResponseErrors(res) {
    if (res.hasOwnProperty('code')) {
        let errorMessage = 'An unknown error has occurred.';

        switch (res.code) {
            case 'ApiNotAvailable':
                errorMessage = resources.apiNotAvailableMessage;
            break;

            case 'RequestLimitExceeded':
                errorMessage = resources.tooManyRequestsMessage;
            break;
        }

        return Promise.reject(errorMessage);
    }

    return res;
}

class ChainRadarClient extends ApiClientBase {
    constructor(network) {
        super('http://chainradar.com/api/v1/');
        
        let formattedNetwork = network.trim().toLowerCase();
        if (formattedNetwork === 'xmr') {
            formattedNetwork = 'mro';
        } else if (formattedNetwork === 'xdn') {
            formattedNetwork = 'duck';
        }
        
        if (!_chainRadarValueDivisors.hasOwnProperty(formattedNetwork)) {
            throw new Error(resources.generateUnsupportedNetworkMessage(network));
        }
        
        this._network = formattedNetwork;
    }
    
    getAccount() {
        return Promise.reject(resources.operationNotSupportedMessage);
    }
    
    getBlockByNumberOrHash(blockId) {
        return this.executeRequest(`${this._network}/blocks/${blockId}/full`, 'Block').then(handleResponseErrors);
    }
    
    getNetworkInfo() {
        return this.executeRequest(`${this._network}/status`, 'Network Info').then(handleResponseErrors);
    }
    
    getTransaction(transactionHash) {
        return this.executeRequest(`${this._network}/transactions/${transactionHash}/full`, 'Transaction').then(handleResponseErrors)
        .then((transaction) => {
            transaction.valueDivisor = _chainRadarValueDivisors[this._network];
            
            return transaction;
        });
    }
}

module.exports = ChainRadarClient;