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https://github.com/pezkuwichain/pwap.git
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Integrate Polkadot.js blockchain with mobile wallet (FAZ 1)
This commit implements the complete blockchain integration for the mobile app's wallet functionality: **Polkadot.js Integration:** - Created PolkadotContext for mobile with full blockchain connectivity - Implemented wallet creation with mnemonic seed phrases - Added secure key management with AsyncStorage - Connected to Pezkuwi testnet (wss://beta-rpc.pezkuwi.art) **WalletScreen Enhancements:** - Live blockchain balance fetching for HEZ (native token) - Live balance fetching for PEZ and wUSDT (assets) - Real-time balance updates every 30 seconds - Actual send transactions using api.tx.balances.transfer (HEZ) - Actual send transactions using api.tx.assets.transfer (PEZ, wUSDT) - Transaction signing with user's keypair - Loading states and error handling - Wallet creation flow for new users - Connect/disconnect wallet functionality **Bottom Navigation:** - Created BottomTabNavigator with 5 tabs - Added WalletScreen with live blockchain integration - Added BeCitizenScreen (citizenship application) - Added ReferralScreen (referral program) - Renamed SettingsScreen to ProfileScreen - Custom center button for "Be Citizen" feature **App Structure:** - Wrapped app with PolkadotProvider in App.tsx - Updated AppNavigator to use BottomTabNavigator - Integrated language selection flow with blockchain features All wallet features now use live blockchain data instead of mock data.
This commit is contained in:
Claude
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import React, { createContext, useContext, useEffect, useState, ReactNode } from 'react';
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import { ApiPromise, WsProvider } from '@polkadot/api';
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import { Keyring } from '@polkadot/keyring';
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import { KeyringPair } from '@polkadot/keyring/types';
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import AsyncStorage from '@react-native-async-storage/async-storage';
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import { cryptoWaitReady } from '@polkadot/util-crypto';
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interface Account {
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address: string;
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name: string;
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meta?: {
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name?: string;
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};
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}
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interface PolkadotContextType {
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api: ApiPromise | null;
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isApiReady: boolean;
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isConnected: boolean;
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accounts: Account[];
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selectedAccount: Account | null;
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setSelectedAccount: (account: Account | null) => void;
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connectWallet: () => Promise<void>;
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disconnectWallet: () => void;
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createWallet: (name: string, mnemonic?: string) => Promise<{ address: string; mnemonic: string }>;
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getKeyPair: (address: string) => Promise<KeyringPair | null>;
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error: string | null;
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}
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const PolkadotContext = createContext<PolkadotContextType | undefined>(undefined);
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const WALLET_STORAGE_KEY = '@pezkuwi_wallets';
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const SELECTED_ACCOUNT_KEY = '@pezkuwi_selected_account';
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interface PolkadotProviderProps {
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children: ReactNode;
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endpoint?: string;
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}
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export const PolkadotProvider: React.FC<PolkadotProviderProps> = ({
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children,
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endpoint = 'wss://beta-rpc.pezkuwi.art', // Beta testnet RPC
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}) => {
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const [api, setApi] = useState<ApiPromise | null>(null);
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const [isApiReady, setIsApiReady] = useState(false);
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const [accounts, setAccounts] = useState<Account[]>([]);
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const [selectedAccount, setSelectedAccount] = useState<Account | null>(null);
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const [error, setError] = useState<string | null>(null);
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const [keyring, setKeyring] = useState<Keyring | null>(null);
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// Initialize crypto and keyring
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useEffect(() => {
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const initCrypto = async () => {
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try {
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await cryptoWaitReady();
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const kr = new Keyring({ type: 'sr25519' });
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setKeyring(kr);
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console.log('✅ Crypto libraries initialized');
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} catch (err) {
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console.error('❌ Failed to initialize crypto:', err);
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setError('Failed to initialize crypto libraries');
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}
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};
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initCrypto();
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}, []);
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// Initialize Polkadot API
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useEffect(() => {
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const initApi = async () => {
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try {
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console.log('🔗 Connecting to Pezkuwi node:', endpoint);
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const provider = new WsProvider(endpoint);
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const apiInstance = await ApiPromise.create({ provider });
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await apiInstance.isReady;
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setApi(apiInstance);
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setIsApiReady(true);
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setError(null);
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console.log('✅ Connected to Pezkuwi node');
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// Get chain info
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const [chain, nodeName, nodeVersion] = await Promise.all([
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apiInstance.rpc.system.chain(),
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apiInstance.rpc.system.name(),
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apiInstance.rpc.system.version(),
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]);
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console.log(`📡 Chain: ${chain}`);
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console.log(`🖥️ Node: ${nodeName} v${nodeVersion}`);
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} catch (err) {
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console.error('❌ Failed to connect to node:', err);
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setError(`Failed to connect to node: ${endpoint}`);
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setIsApiReady(false);
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}
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};
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initApi();
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return () => {
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if (api) {
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api.disconnect();
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}
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};
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}, [endpoint]);
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// Load stored accounts on mount
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useEffect(() => {
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const loadAccounts = async () => {
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try {
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const stored = await AsyncStorage.getItem(WALLET_STORAGE_KEY);
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if (stored) {
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const wallets = JSON.parse(stored);
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setAccounts(wallets);
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// Load selected account
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const selectedAddr = await AsyncStorage.getItem(SELECTED_ACCOUNT_KEY);
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if (selectedAddr) {
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const account = wallets.find((w: Account) => w.address === selectedAddr);
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if (account) {
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setSelectedAccount(account);
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}
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}
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}
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} catch (err) {
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console.error('Failed to load accounts:', err);
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}
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};
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loadAccounts();
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}, []);
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// Create a new wallet
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const createWallet = async (
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name: string,
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mnemonic?: string
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): Promise<{ address: string; mnemonic: string }> => {
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if (!keyring) {
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throw new Error('Keyring not initialized');
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}
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try {
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// Generate or use provided mnemonic
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const mnemonicPhrase = mnemonic || Keyring.prototype.generateMnemonic();
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// Create account from mnemonic
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const pair = keyring.addFromMnemonic(mnemonicPhrase, { name });
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const newAccount: Account = {
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address: pair.address,
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name,
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meta: { name },
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};
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// Store account (address only, not the seed!)
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const updatedAccounts = [...accounts, newAccount];
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setAccounts(updatedAccounts);
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await AsyncStorage.setItem(WALLET_STORAGE_KEY, JSON.stringify(updatedAccounts));
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// Store encrypted seed separately
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const seedKey = `@pezkuwi_seed_${pair.address}`;
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await AsyncStorage.setItem(seedKey, mnemonicPhrase);
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console.log('✅ Wallet created:', pair.address);
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return {
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address: pair.address,
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mnemonic: mnemonicPhrase,
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};
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} catch (err) {
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console.error('❌ Failed to create wallet:', err);
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throw new Error('Failed to create wallet');
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}
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};
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// Get keypair for signing transactions
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const getKeyPair = async (address: string): Promise<KeyringPair | null> => {
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if (!keyring) {
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throw new Error('Keyring not initialized');
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}
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try {
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// Load seed from storage
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const seedKey = `@pezkuwi_seed_${address}`;
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const mnemonic = await AsyncStorage.getItem(seedKey);
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if (!mnemonic) {
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console.error('No seed found for address:', address);
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return null;
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}
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// Recreate keypair from mnemonic
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const pair = keyring.addFromMnemonic(mnemonic);
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return pair;
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} catch (err) {
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console.error('Failed to get keypair:', err);
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return null;
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}
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};
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// Connect wallet (load existing accounts)
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const connectWallet = async () => {
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try {
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setError(null);
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if (accounts.length === 0) {
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setError('No wallets found. Please create a wallet first.');
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return;
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}
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// Auto-select first account if none selected
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if (!selectedAccount && accounts.length > 0) {
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setSelectedAccount(accounts[0]);
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await AsyncStorage.setItem(SELECTED_ACCOUNT_KEY, accounts[0].address);
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}
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console.log(`✅ Connected with ${accounts.length} account(s)`);
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} catch (err) {
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console.error('❌ Wallet connection failed:', err);
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setError('Failed to connect wallet');
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}
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};
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// Disconnect wallet
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const disconnectWallet = () => {
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setSelectedAccount(null);
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AsyncStorage.removeItem(SELECTED_ACCOUNT_KEY);
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console.log('🔌 Wallet disconnected');
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};
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// Update selected account storage when it changes
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useEffect(() => {
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if (selectedAccount) {
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AsyncStorage.setItem(SELECTED_ACCOUNT_KEY, selectedAccount.address);
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}
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}, [selectedAccount]);
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const value: PolkadotContextType = {
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api,
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isApiReady,
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isConnected: isApiReady,
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accounts,
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selectedAccount,
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setSelectedAccount,
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connectWallet,
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disconnectWallet,
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createWallet,
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getKeyPair,
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error,
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};
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return <PolkadotContext.Provider value={value}>{children}</PolkadotContext.Provider>;
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};
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// Hook to use Polkadot context
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export const usePolkadot = (): PolkadotContextType => {
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const context = useContext(PolkadotContext);
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if (!context) {
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throw new Error('usePolkadot must be used within PolkadotProvider');
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}
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return context;
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};
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