@portis/web3/lib/web3/web3Manager.js

Portis Web3 SDK

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
var ProviderEngine = require('web3-provider-engine');
var CacheSubprovider = require('web3-provider-engine/dist/es5/subproviders/cache.js');
var FixtureSubprovider = require('web3-provider-engine/dist/es5/subproviders/fixture.js');
var FilterSubprovider = require('web3-provider-engine/dist/es5/subproviders/filters.js');
var HookedWalletSubprovider = require('web3-provider-engine/dist/es5/subproviders/hooked-wallet.js');
var NonceSubprovider = require('web3-provider-engine/dist/es5/subproviders/nonce-tracker.js');
var SubscriptionsSubprovider = require('web3-provider-engine/dist/es5/subproviders/subscriptions.js');
var networks_1 = require("../networks");
var getTxGas_1 = require("../utils/getTxGas");
var query_1 = require("../utils/query");
var Web3Manager = /** @class */ (function () {
    function Web3Manager(config, _getWidgetCommunication) {
        this.config = config;
        this._getWidgetCommunication = _getWidgetCommunication;
        this.provider = this._initProvider();
    }
    Web3Manager.prototype.setSelectedAddress = function (selectedAddress) {
        this._selectedAddress = selectedAddress;
    };
    Web3Manager.prototype.changeNetwork = function (network, gasRelay) {
        var newNetwork = networks_1.networkAdapter(network, gasRelay);
        this.clearSubprovider(NonceSubprovider);
        this.clearSubprovider(CacheSubprovider);
        this.config.network = newNetwork;
    };
    Web3Manager.prototype._initProvider = function () {
        var _this = this;
        // don't init the engine twice
        if (this.engine) {
            return this.engine;
        }
        this.engine = new ProviderEngine();
        var query = new query_1.Query(this.engine);
        this.engine.send = function (payload, callback) {
            // Web3 1.0 beta.38 (and above) calls `send` with method and parameters
            if (typeof payload === 'string') {
                return new Promise(function (resolve, reject) {
                    _this.engine.sendAsync({
                        jsonrpc: '2.0',
                        id: 42,
                        method: payload,
                        params: callback || [],
                    }, function (error, response) {
                        if (error) {
                            reject(error);
                        }
                        else {
                            resolve(response.result);
                        }
                    });
                });
            }
            // Web3 1.0 beta.37 (and below) uses `send` with a callback for async queries
            if (callback) {
                _this.engine.sendAsync(payload, callback);
                return;
            }
            var result = null;
            switch (payload.method) {
                case 'eth_accounts':
                    result = _this._selectedAddress ? [_this._selectedAddress] : [];
                    break;
                case 'eth_coinbase':
                    result = _this._selectedAddress ? [_this._selectedAddress] : [];
                    break;
                case 'net_version':
                    result = _this._network;
                    break;
                case 'eth_uninstallFilter':
                    _this.engine.sendAsync(payload, function (_) { return _; });
                    result = true;
                    break;
                default:
                    var message = "The Portis Web3 object does not support synchronous methods like " + payload.method + " without a callback parameter.";
                    throw new Error(message);
            }
            return {
                id: payload.id,
                jsonrpc: payload.jsonrpc,
                result: result,
            };
        };
        this.engine.addProvider(new FixtureSubprovider({
            web3_clientVersion: "Portis/v" + this.config.version + "/javascript",
            net_listening: true,
            eth_hashrate: '0x00',
            eth_mining: false,
            eth_syncing: true,
        }));
        // cache layer
        this.engine.addProvider(new CacheSubprovider());
        // subscriptions manager
        this.engine.addProvider(new SubscriptionsSubprovider());
        // filters
        this.engine.addProvider(new FilterSubprovider());
        // pending nonce
        this.engine.addProvider(new NonceSubprovider());
        // set default id when needed
        this.engine.addProvider({
            setEngine: function (_) { return _; },
            handleRequest: function (payload, next) { return __awaiter(_this, void 0, void 0, function () {
                return __generator(this, function (_a) {
                    if (!payload.id) {
                        payload.id = 42;
                    }
                    next();
                    return [2 /*return*/];
                });
            }); },
        });
        // main web3 functionality - carried out via widget communication
        this.engine.addProvider(new HookedWalletSubprovider({
            getAccounts: function (cb) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            return [4 /*yield*/, widgetCommunication.getAccounts(this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            if (!error && result) {
                                this._selectedAddress = result[0];
                            }
                            cb(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
            signTransaction: function (txParams, cb) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            return [4 /*yield*/, widgetCommunication.signTransaction(txParams, this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            cb(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
            signMessage: function (msgParams, cb) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, params, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            params = __assign({}, msgParams, { messageStandard: 'signMessage' });
                            return [4 /*yield*/, widgetCommunication.signMessage(params, this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            cb(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
            signPersonalMessage: function (msgParams, cb) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, params, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            params = __assign({}, msgParams, { messageStandard: 'signPersonalMessage' });
                            return [4 /*yield*/, widgetCommunication.signMessage(params, this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            cb(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
            signTypedMessage: function (msgParams, cb) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, params, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            params = __assign({}, msgParams, { messageStandard: 'signTypedMessage' });
                            return [4 /*yield*/, widgetCommunication.signMessage(params, this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            cb(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
            signTypedMessageV3: function (msgParams, cb) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, params, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            params = __assign({}, msgParams, { messageStandard: 'signTypedMessageV3' });
                            return [4 /*yield*/, widgetCommunication.signMessage(params, this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            cb(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
            estimateGas: function (txParams, cb) { return __awaiter(_this, void 0, void 0, function () {
                var gas;
                return __generator(this, function (_a) {
                    switch (_a.label) {
                        case 0: return [4 /*yield*/, getTxGas_1.getTxGas(query, txParams)];
                        case 1:
                            gas = _a.sent();
                            cb(null, gas);
                            return [2 /*return*/];
                    }
                });
            }); },
            getGasPrice: function (cb) { return __awaiter(_this, void 0, void 0, function () {
                return __generator(this, function (_a) {
                    cb(null, '');
                    return [2 /*return*/];
                });
            }); },
        }));
        this.engine.addProvider({
            setEngine: function (_) { return _; },
            handleRequest: function (payload, next, end) { return __awaiter(_this, void 0, void 0, function () {
                var widgetCommunication, _a, error, result;
                return __generator(this, function (_b) {
                    switch (_b.label) {
                        case 0: return [4 /*yield*/, this._getWidgetCommunication()];
                        case 1:
                            widgetCommunication = _b.sent();
                            return [4 /*yield*/, widgetCommunication.relay(payload, this.config)];
                        case 2:
                            _a = _b.sent(), error = _a.error, result = _a.result;
                            if (payload.method === 'net_version') {
                                this._network = result;
                                this.engine.networkVersion = this._network;
                            }
                            end(error, result);
                            return [2 /*return*/];
                    }
                });
            }); },
        });
        this.engine.enable = function () {
            return new Promise(function (resolve, reject) {
                _this.engine.sendAsync({ method: 'eth_accounts' }, function (error, response) {
                    if (error) {
                        reject(error);
                    }
                    else {
                        resolve(response.result);
                    }
                });
            });
        };
        this.engine.isConnected = function () {
            return true;
        };
        this.engine.isPortis = true;
        this.engine.on('error', function (error) {
            if (error && error.message && error.message.includes('PollingBlockTracker')) {
                console.warn('If you see this warning constantly, there might be an error with your RPC node.');
            }
            else {
                console.error(error);
            }
        });
        this.engine.start();
        return this.engine;
    };
    Web3Manager.prototype.clearSubprovider = function (subproviderType) {
        var subprovider = this.provider._providers.find(function (subprovider) { return subprovider instanceof subproviderType; });
        this.provider.removeProvider(subprovider);
        this.provider.addProvider(new subproviderType());
    };
    return Web3Manager;
}());
exports.default = Web3Manager;
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