7e7393e4f8
DChain single-node blockchain + React Native messenger client. Core: - PBFT consensus with multi-sig validator admission + equivocation slashing - BadgerDB + schema migration scaffold (CurrentSchemaVersion=0) - libp2p gossipsub (tx/v1, blocks/v1, relay/v1, version/v1) - Native Go contracts (username_registry) alongside WASM (wazero) - WebSocket gateway with topic-based fanout + Ed25519-nonce auth - Relay mailbox with NaCl envelope encryption (X25519 + Ed25519) - Prometheus /metrics, per-IP rate limit, body-size cap Deployment: - Single-node compose (deploy/single/) with Caddy TLS + optional Prometheus - 3-node dev compose (docker-compose.yml) with mocked internet topology - 3-validator prod compose (deploy/prod/) for federation - Auto-update from Gitea via /api/update-check + systemd timer - Build-time version injection (ldflags → node --version) - UI / Swagger toggle flags (DCHAIN_DISABLE_UI, DCHAIN_DISABLE_SWAGGER) Client (client-app/): - Expo / React Native / NativeWind - E2E NaCl encryption, typing indicator, contact requests - Auto-discovery of canonical contracts, chain_id aware, WS reconnect on node switch Documentation: - README.md, CHANGELOG.md, CONTEXT.md - deploy/single/README.md with 6 operator scenarios - deploy/UPDATE_STRATEGY.md with 4-layer forward-compat design - docs/contracts/*.md per contract
102 lines
3.8 KiB
TypeScript
102 lines
3.8 KiB
TypeScript
/**
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* Persistent storage for keys and app settings.
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* On mobile: expo-secure-store for key material, AsyncStorage for settings.
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* On web: falls back to localStorage (dev only).
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*/
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import * as SecureStore from 'expo-secure-store';
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import AsyncStorage from '@react-native-async-storage/async-storage';
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import type { KeyFile, Contact, NodeSettings } from './types';
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// ─── Keys ─────────────────────────────────────────────────────────────────────
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const KEYFILE_KEY = 'dchain_keyfile';
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const CONTACTS_KEY = 'dchain_contacts';
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const SETTINGS_KEY = 'dchain_settings';
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const CHATS_KEY = 'dchain_chats';
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/** Save the key file in secure storage (encrypted on device). */
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export async function saveKeyFile(kf: KeyFile): Promise<void> {
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await SecureStore.setItemAsync(KEYFILE_KEY, JSON.stringify(kf));
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}
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/** Load key file. Returns null if not set. */
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export async function loadKeyFile(): Promise<KeyFile | null> {
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const raw = await SecureStore.getItemAsync(KEYFILE_KEY);
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if (!raw) return null;
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return JSON.parse(raw) as KeyFile;
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}
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/** Delete key file (logout / factory reset). */
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export async function deleteKeyFile(): Promise<void> {
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await SecureStore.deleteItemAsync(KEYFILE_KEY);
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}
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// ─── Node settings ─────────────────────────────────────────────────────────────
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const DEFAULT_SETTINGS: NodeSettings = {
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nodeUrl: 'http://localhost:8081',
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contractId: '',
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};
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export async function loadSettings(): Promise<NodeSettings> {
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const raw = await AsyncStorage.getItem(SETTINGS_KEY);
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if (!raw) return DEFAULT_SETTINGS;
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return { ...DEFAULT_SETTINGS, ...JSON.parse(raw) };
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}
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export async function saveSettings(s: Partial<NodeSettings>): Promise<void> {
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const current = await loadSettings();
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await AsyncStorage.setItem(SETTINGS_KEY, JSON.stringify({ ...current, ...s }));
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}
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// ─── Contacts ─────────────────────────────────────────────────────────────────
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export async function loadContacts(): Promise<Contact[]> {
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const raw = await AsyncStorage.getItem(CONTACTS_KEY);
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if (!raw) return [];
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return JSON.parse(raw) as Contact[];
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}
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export async function saveContact(c: Contact): Promise<void> {
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const contacts = await loadContacts();
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const idx = contacts.findIndex(x => x.address === c.address);
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if (idx >= 0) contacts[idx] = c;
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else contacts.push(c);
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await AsyncStorage.setItem(CONTACTS_KEY, JSON.stringify(contacts));
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}
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export async function deleteContact(address: string): Promise<void> {
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const contacts = await loadContacts();
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await AsyncStorage.setItem(
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CONTACTS_KEY,
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JSON.stringify(contacts.filter(c => c.address !== address)),
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);
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}
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// ─── Message cache (per-chat local store) ────────────────────────────────────
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export interface CachedMessage {
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id: string;
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from: string;
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text: string;
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timestamp: number;
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mine: boolean;
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}
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export async function loadMessages(chatId: string): Promise<CachedMessage[]> {
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const raw = await AsyncStorage.getItem(`${CHATS_KEY}_${chatId}`);
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if (!raw) return [];
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return JSON.parse(raw) as CachedMessage[];
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}
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export async function appendMessage(chatId: string, msg: CachedMessage): Promise<void> {
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const msgs = await loadMessages(chatId);
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// Deduplicate by id
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if (msgs.find(m => m.id === msg.id)) return;
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msgs.push(msg);
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// Keep last 500 messages per chat
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const trimmed = msgs.slice(-500);
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await AsyncStorage.setItem(`${CHATS_KEY}_${chatId}`, JSON.stringify(trimmed));
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}
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