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');

class WavesExplorerClient extends ApiClientBase {
    constructor() {
        super('https://nodes.wavesnodes.com/');
    }
    
    getAccount(accountAddress) {
        const formattedAccountAddress = accountAddress.startsWith('1W') ? accountAddress.substr(2) : accountAddress;
        
        return this.executeRequest(`addresses/balance/${formattedAccountAddress}`, 'Account');
    }
    
    getBlockByNumberOrHash(blockId) {
        return this.executeRequest(`blocks/signature/${blockId}`, 'Block').catch(() => this.executeRequest(`blocks/at/${blockId}`, 'Block'));
    }
    
    getNetworkInfo() {
        return this.executeRequest('blocks/last', 'Network Info');
    }
    
    getTransaction(transactionHash) {
        let transaction;
        
        return this.executeRequest(`transactions/info/${transactionHash}`, 'Transaction').then((res) => {
            //Only handle asset transfer transactions
            if (res.type === 4) {
                res.valueDivisor = 100000000;
                res.valueSymbol = '';

                if (typeof(res.assetId) === 'string') {
                    return this.updateTransactionFromAssetInfo(res);
                }

                return res;
            }
            
            return Promise.reject(resources.transactionTypeNotSupportedMessage(res.type));
        }).then((res) => {
            transaction = res;
            
            return this.executeRequest(`blocks/at/${transaction.height}`, 'Transaction');
        }).then((res) => {
            transaction.blockHash = res.signature;
            
            return transaction;
        });
    }
    
    updateTransactionFromAssetInfo(transaction) {
        return this.executeRequest(`transactions/info/${transaction.assetId}`, 'Transaction').then((res) => {
            transaction.valueDivisor = Math.pow(10, res.decimals);
            transaction.valueSymbol = res.name;
            
            return transaction;
        });
    }
}

module.exports = new WavesExplorerClient();