walletsession/session.ts

class for initiating a gui "session" in turtlecoin-wallet-backend

import { WalletBackend, ConventionalDaemon, BlockchainCacheApi, IDaemon} from 'turtlecoin-wallet-backend';
import log from 'electron-log';

export class WalletSession {

    public daemon: IDaemon;
    public wallet: any;
    public address: string;
    public syncStatus: number;

    constructor(opts?: any) {
        this.daemon = new BlockchainCacheApi('blockapi.turtlepay.io', true)
        const openWallet = WalletBackend.createWallet(this.daemon);
        this.wallet = openWallet;
        this.syncStatus = this.updateSyncStatus();
        this.address = this.wallet.getPrimaryAddress();
    }

    public updateSyncStatus() {
        let [walletHeight, localHeight, networkHeight] = this.wallet.getSyncStatus();
        /* Since we update the network height in intervals, and we update wallet
        height by syncing, occasionaly wallet height is > network height.
        Fix that here. */
        if (walletHeight > networkHeight && networkHeight !== 0 && networkHeight + 10 > walletHeight) {
            networkHeight = walletHeight;
        }
        /* if the wallet has been synced in the past, the wallet will sometimes display
        currentHeight / 0, so if networkHeight is 0 set it equal to block height */
        if (networkHeight === 0 && walletHeight !== 0) {
            networkHeight = walletHeight;
        }
        // Don't divide by zero
        let syncFill = networkHeight === 0 ? 0 : walletHeight / networkHeight;
        let percentSync = 100 * syncFill;
        // Prevent bar looking full when it's not
        if (syncFill > 0.97 && syncFill < 1) {
            syncFill = 0.97;
        }
        // Prevent 100% when just under
        if (percentSync > 99.99 && percentSync < 100) {
            percentSync = 99.99;
        }
        return this.roundToNearestHundredth(percentSync);
    }

    private roundToNearestHundredth(x: number) {
        return Math.ceil(x * 100) / 100;
    }
}