all files / packages/susyweb-bzz/src/ index.js

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/*
    This file is part of susyweb.js.
 
    susyweb.js is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    susyweb.js is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MSRCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public License
    along with susyweb.js.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
 * @file index.js
 * @author Fabian Vogelsteller <fabian@ethereum.org>
 * @date 2017
 */
 
"use strict";
 
var _ = require('underscore');
var swarm = require("swarm-js");
 
 
var Bzz = function Bzz(provider) {
 
    this.givenProvider = Bzz.givenProvider;
 
    // if new SusyWeb(provider), use the given provider
    Eif (provider && provider._requestManager) {
        provider = provider.currentProvider;
    }
 
    // only allow file picker when in browser
    Iif(typeof document !== 'undefined') {
        this.pick = swarm.pick;
    }
 
    this.setProvider(provider);
};
 
// set default sophon provider
/* jshint ignore:start */
Bzz.givenProvider = null;
Iif(typeof sophonProvider !== 'undefined' && sophonProvider.bzz) {
    Bzz.givenProvider = sophonProvider;
}
/* jshint ignore:end */
 
Bzz.prototype.setProvider = function(provider) {
    // is sophon provider
    Iif(_.isObject(provider) && _.isString(provider.bzz)) {
        provider = provider.bzz;
    // is no string, set default
    } else if(!_.isString(provider)) {
        provider = 'http://swarm-gateways.net'; // default to gateway
    }
 
 
    Eif(_.isString(provider)) {
        this.currentProvider = provider;
    } else {
        return false;
    }
 
    // add functions
    this.download = swarm.at(provider).download;
    this.upload = swarm.at(provider).upload;
    this.isAvailable = swarm.at(provider).isAvailable;
 
    return true;
};
 
 
module.exports = Bzz;