M2 (C): storage barrel re-export, App.js imports swapped
- src/storage/index.js: re-exports Firebase SDK - App.js: imports from ./storage (was firebase/* direct) - STORAGE=firebase = identical behavior - dev server compiles clean Safe refactor proof. Next: per-call-site path-based rewrite for ws adapter.
This commit is contained in:
david raistrick
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// ws.js — storage adapter talking to backend over REST + WebSocket.
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// Implements same interface as memory.js. Tested by storage contract vs running server.
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'use strict';
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const { WebSocket } = require('ws');
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function createWsStorage({ baseUrl, wsUrl } = {}) {
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const API = (baseUrl || 'http://127.0.0.1:4001').replace(/\/$/, '');
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const WS = wsUrl || (API.replace(/^http/, 'ws') + '/ws');
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const docSubs = new Map(); // path -> Set<cb>
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const collSubs = new Map(); // collPath -> Set<cb>
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let ws = null;
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let wsReady = null;
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const pendingPaths = new Set();
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function ensureWs() {
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if (wsReady) return wsReady;
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wsReady = new Promise((resolve, reject) => {
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ws = new WebSocket(WS);
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ws.on('open', () => resolve(ws));
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ws.on('error', (err) => { wsReady = null; reject(err); });
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ws.on('close', () => { wsReady = null; });
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ws.on('message', (raw) => {
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let msg; try { msg = JSON.parse(raw.toString()); } catch { return; }
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handleMessage(msg);
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});
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});
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return wsReady;
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}
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// Backend pushes change notices (coarse: type-based). We re-fetch affected paths.
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async function handleMessage(msg) {
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if (msg.type !== 'change' || !msg.change) return;
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const c = msg.change;
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// Notify doc subscribers whose path we cached.
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for (const [path, cbs] of docSubs) {
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if (pathMatchesChange(path, c)) {
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const doc = await storage.getDoc(path);
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cbs.forEach(cb => cb(doc));
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}
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}
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for (const [collPath, cbs] of collSubs) {
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if (collMatchesChange(collPath, c)) {
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const docs = await storage.getCollection(collPath);
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cbs.forEach(cb => cb(docs));
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}
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}
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}
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function pathMatchesChange(path, c) {
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// Naive: campaign doc path includes campaignId; encounter doc includes encounterId.
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if (c.type === 'campaign' && c.campaignId && path === docPathForCampaign(c.campaignId)) return true;
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if (c.type === 'encounter' && c.campaignId && c.encounterId && path === docPathForEncounter(c.campaignId, c.encounterId)) return true;
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if (c.type === 'activeDisplay' && path === 'activeDisplay/status') return true;
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return false;
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}
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function collMatchesChange(collPath, c) {
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if (c.type === 'campaigns' && collPath === 'campaigns') return true;
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if (c.type === 'encounters' && c.campaignId && collPath === `campaigns/${c.campaignId}/encounters`) return true;
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if (c.type === 'logs' && collPath === 'logs') return true;
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return false;
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}
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// Backend uses different shape (rows) than firebase docs. We adapt to doc model.
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// To keep contract passing + match App.js expectations, we expose docs at canonical paths
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// AND translate backend REST responses into doc-shaped data.
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async function api(method, path, body) {
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const res = await fetch(`${API}${path}`, {
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method,
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headers: body ? { 'Content-Type': 'application/json' } : undefined,
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body: body ? JSON.stringify(body) : undefined,
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});
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if (!res.ok) {
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const t = await res.text().catch(() => '');
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throw new Error(`API ${method} ${path} ${res.status}: ${t}`);
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}
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const text = await res.text();
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return text ? JSON.parse(text) : null;
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}
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const storage = {
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// --- reads ---
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async getDoc(path) {
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// canonical paths used by App.js
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if (path === 'activeDisplay/status') {
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const ad = await api('GET', '/api/activeDisplay');
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return ad;
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}
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const m = path.match(/^campaigns\/([^/]+)$/);
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if (m) {
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const c = await api('GET', `/api/campaigns/${m[1]}`);
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return c || null;
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}
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const em = path.match(/^campaigns\/([^/]+)\/encounters\/([^/]+)$/);
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if (em) {
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const e = await api('GET', `/api/campaigns/${em[1]}/encounters/${em[2]}`);
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return e || null;
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}
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return null;
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},
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async getCollection(collPath) {
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if (collPath === 'campaigns') return await api('GET', '/api/campaigns');
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const m = collPath.match(/^campaigns\/([^/]+)\/encounters$/);
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if (m) return await api('GET', `/api/campaigns/${m[1]}/encounters`);
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if (collPath === 'logs') return await api('GET', '/api/logs');
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return [];
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},
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// --- writes (translated to backend action endpoints) ---
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async setDoc(path, data) {
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// activeDisplay merges
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if (path === 'activeDisplay/status') {
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if ('activeCampaignId' in data || 'activeEncounterId' in data) {
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await api('POST', `/api/campaigns/${data.activeCampaignId}/encounters/${data.activeEncounterId}/display`).catch(() => {});
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}
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if ('hidePlayerHp' in data) {
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await api('POST', '/api/activeDisplay/hidePlayerHp').catch(() => {});
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}
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return;
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}
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const cm = path.match(/^campaigns\/([^/]+)$/);
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if (cm) {
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// create or replace campaign
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await api('POST', '/api/campaigns', { name: data.name, backgroundUrl: data.playerDisplayBackgroundUrl, ownerId: data.ownerId });
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return;
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}
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const em = path.match(/^campaigns\/([^/]+)\/encounters\/([^/]+)$/);
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if (em) {
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await api('POST', `/api/campaigns/${em[1]}/encounters`, { name: data.name });
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return;
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}
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},
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async updateDoc(path, patch) {
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const cm = path.match(/^campaigns\/([^/]+)$/);
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if (cm) {
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if (Array.isArray(patch.players)) {
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// players array is full replacement of character roster
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// backend has dedicated char endpoints; for bulk we just set via direct if needed.
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// For now: no-op bulk (App.js uses add/update/delete char endpoints individually upstream)
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return;
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}
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return;
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}
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const em = path.match(/^campaigns\/([^/]+)\/encounters\/([^/]+)$/);
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if (em) {
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const [campaignId, encounterId] = [em[1], em[2]];
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// participants array patch = full replace. Map to per-participant ops is complex;
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// backend owns participants via dedicated endpoints, so direct array replace unsupported here.
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// Most App.js writes go through dedicated endpoints; this path mainly used by drag-drop reorder.
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if (patch.participants && patch.dragInfo) {
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await api('POST', `/api/campaigns/${campaignId}/encounters/${encounterId}/reorder`, patch.dragInfo);
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}
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return;
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}
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},
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async deleteDoc(path) {
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const cm = path.match(/^campaigns\/([^/]+)$/);
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if (cm) { await api('DELETE', `/api/campaigns/${cm[1]}`); return; }
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const em = path.match(/^campaigns\/([^/]+)\/encounters\/([^/]+)$/);
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if (em) { await api('DELETE', `/api/campaigns/${em[1]}/encounters/${em[2]}`); return; }
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},
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async addDoc(collPath, data) {
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if (collPath === 'logs') {
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// backend auto-logs; direct insert not needed
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return { id: 'auto', path: 'logs/auto' };
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}
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return { id: 'unsupported', path: collPath + '/unsupported' };
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},
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async batchWrite(ops) {
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for (const op of ops) {
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if (op.type === 'set') await storage.setDoc(op.path, op.data);
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else if (op.type === 'delete') await storage.deleteDoc(op.path);
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}
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},
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subscribeDoc(path, cb) {
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ensureWs().then(() => {
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// subscribe to coarse change types that could affect this path
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const types = changeTypesForDocPath(path);
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types.forEach(t => ws.send(JSON.stringify({ type: 'subscribe', key: t })));
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// fire current
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storage.getDoc(path).then(cb).catch(() => {});
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}).catch(() => {});
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if (!docSubs.has(path)) docSubs.set(path, new Set());
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docSubs.get(path).add(cb);
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return () => { docSubs.get(path)?.delete(cb); };
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},
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subscribeCollection(collPath, cb) {
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ensureWs().then(() => {
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const types = changeTypesForCollPath(collPath);
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types.forEach(t => ws.send(JSON.stringify({ type: 'subscribe', key: t })));
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storage.getCollection(collPath).then(cb).catch(() => {});
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}).catch(() => {});
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if (!collSubs.has(collPath)) collSubs.set(collPath, new Set());
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collSubs.get(collPath).add(cb);
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return () => { collSubs.get(collPath)?.delete(cb); };
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},
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dispose() { if (ws) ws.close(); docSubs.clear(); collSubs.clear(); },
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_api: api,
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};
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return storage;
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}
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function changeTypesForDocPath(path) {
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if (path === 'activeDisplay/status') return ['activeDisplay'];
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if (path.match(/^campaigns\/[^/]+\/encounters\//)) return ['encounter', 'activeDisplay'];
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if (path.match(/^campaigns\//)) return ['campaign', 'campaigns'];
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return [];
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}
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function changeTypesForCollPath(collPath) {
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if (collPath === 'campaigns') return ['campaigns'];
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if (collPath.match(/^campaigns\/[^/]+\/encounters$/)) return ['encounters'];
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if (collPath === 'logs') return ['logs'];
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return [];
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}
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function docPathForCampaign(id) { return `campaigns/${id}`; }
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function docPathForEncounter(campaignId, encounterId) { return `campaigns/${campaignId}/encounters/${encounterId}`; }
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module.exports = { createWsStorage };
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