@oap75/api/connections/substrate.js

JavaScript API for Subsocial blockchain.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSubstrateApi = void 0;
const api_1 = require("@polkadot/api");
const utils_1 = require("@subsocial/utils");
const registry_1 = __importDefault(require("@subsocial/types/substrate/registry"));
const util_1 = require("@polkadot/util");
const types_1 = require("@subsocial/types");
const logger = (0, utils_1.newLogger)('SubstrateConnection');
let api = undefined;
/** Get the current open connection to Substrate node. */
const getSubstrateApi = (nodeUrl) => __awaiter(void 0, void 0, void 0, function* () {
    var _a, _b;
    if (api)
        return api;
    const rpcEndpoint = nodeUrl || 'ws://127.0.0.1:9944/';
    const provider = new api_1.WsProvider(rpcEndpoint);
    logger.info(`Connecting to Substrate node at ${rpcEndpoint}...`);
    api = new api_1.ApiPromise({ provider, typesBundle: types_1.typesBundle });
    yield api.isReady;
    const properties = yield api.rpc.system.properties();
    const tokenSymbol = (_a = properties.tokenSymbol.unwrapOr(undefined)) === null || _a === void 0 ? void 0 : _a.map((x) => x.toString());
    const tokenDecimals = (_b = properties.tokenDecimals.unwrapOr(undefined)) === null || _b === void 0 ? void 0 : _b.map((x) => x.toNumber());
    registry_1.default.setChainProperties(properties);
    util_1.formatBalance.setDefaults({
        decimals: tokenDecimals,
        unit: tokenSymbol
    });
    return api;
});
exports.getSubstrateApi = getSubstrateApi;