rpc

TODO.md

@@ -1,9 +1,6 @@
 # TODO
 
 push offers
-redux that bitch
+cover off admin routes and commands
 
-
-seller
-    eg min 6 items
-    shipping is 101aud
+do we keep historical offers / wants?

api/index.ts

@@ -28,7 +28,7 @@ async function start() {
         events,
     } = createServices(log);
 
-    events.emit(Events.StartupSync);
+    // events.emit(Events.StartupSync);
     // events.emit(Events.ListingsUpdated);
 
     api.listen();

api/src/api.ts

@@ -16,6 +16,7 @@ import type { Listing, User, Want, Prisma } from '@prisma/client';
 import { Pg } from './pg';
 import routerAuth from './routers/router.auth';
 import { Events } from './events';
+import createRpc, { RpcMessageType } from './rpc';
 
 export default function createApi(log: Log, pg: Pg, discogs, offers, events) {
     const PORT = 41337;
@@ -153,22 +154,27 @@ export default function createApi(log: Log, pg: Pg, discogs, offers, events) {
     app.ws.use(passport.session());
     app.ws.use(async (ctx, next) => {
         log.info('new ws connection', { user: ctx.state.user });
-        ctx.websocket.on('message', async function incoming(message) {
-            log.info(message.toString());
+
+        // log.child...
+
+        const ws = ctx.websocket;
+        const rpc = createRpc(log, pg, ctx.state.user, ws, discogs, offers);
+
+        if (ctx.state.user) events.emit(Events.Connection, { ws, id: ctx.state.user.id });
+        ws.on('message', async function incoming(message) {
             try {
                 const parsed = JSON.parse(message.toString());
-                log.info(parsed);
-                // const response = await rpc.receive(parsed);
-                // rpc.send(ws, response);
+                const response = await rpc.receive(parsed);
+                rpc.send(response);
             } catch (e) {
                 log.warn(e);
                 log.warn(message.toString());
-                // rpc.send(ws, [RpcMessageType.Error, e.message || e.msg])
+                rpc.send([RpcMessageType.Error, e.message || e.msg]);
             }
             return true;
         });
 
-        ctx.websocket.on('close', function onClose() {
+        ws.on('close', function onClose() {
             log.info('ws disconnected', { user: ctx.state.user });
         });
     });

api/src/events.ts

@@ -12,10 +12,12 @@ export enum Events {
     WantAdded = 'WantAdded',
     StartupSync = 'StartupSync',
     ListingsUpdated = 'ListingsUpdated',
+    Connection = 'Connection',
 }
 
 export default function createEvents(log: Log, pg: Pg, discogs, offers) {
     const events = new EventEmitter({ captureRejections: true });
+    const connections = new Map();
 
     async function populateListings(want: Want) {
         try {
@@ -82,5 +84,9 @@ export default function createEvents(log: Log, pg: Pg, discogs, offers) {
         log.info('offers up to date');
     });
 
+    events.on(Events.Connection, async function onConnection({ ws, id }) {
+        connections.set(id, ws);
+    })
+
     return events;
 }

api/src/offers.ts

@@ -1,5 +1,6 @@
 import type Log from 'bunyan';
 import type { PrismaClient, Want, User, Listing, Offer, } from '@prisma/client';
+import assert from 'assert/strict';
 import groupBy from 'lodash/groupBy';
 import sortBy from 'lodash/sortBy';
 import { Context } from 'koa';
@@ -8,11 +9,11 @@ import { logAxiosError } from './utils';
 import { Pg } from './pg';
 
 export enum Status {
-    Pending      = 'pending',
-    Accepted     = 'accepted',
-    Declined     = 'declined',
-    Ordered      = 'ordered',
-    Complete     = 'complete',
+    Pending      = 'Pending',
+    Accepted     = 'Accepted',
+    Declined     = 'Declined',
+    Ordered      = 'Ordered',
+    Complete     = 'Complete',
 }
 
 export default function createOffers(log: Log, pg: Pg) {
@@ -60,7 +61,13 @@ export default function createOffers(log: Log, pg: Pg) {
 
         // check the user actually has this offer
         const offer = await pg.userOfferFind(ctx.state.user, id);
-        return pg.offerSetStatus(offer.id, Status.Accepted);
+        return pg.offerStatusSet(offer.id, Status.Accepted);
+    }
+
+    async function statusSet(user: User, id: UUID, status: Status) {
+        // check the user actually has this offer
+        const offer = await pg.userOfferFind(user, id);
+        return pg.offerStatusSet(offer.id, status);
     }
 
     async function bundles() {
@@ -108,5 +115,6 @@ export default function createOffers(log: Log, pg: Pg) {
         generate,
         accept,
         bundles,
+        statusSet,
     };
 }

api/src/pg.ts

@@ -31,7 +31,7 @@ export interface Pg {
     bundleCandidates:   () => Promise<Listing[][]>,
 
     offersCreate:       (offers: Offer[]) => Promise<Offer[]>,
-    offerSetStatus:     (id: UUID, status: Status) => Promise<Offer>,
+    offerStatusSet:     (id: UUID, status: Status) => Promise<Offer>,
     offersAdmin:        () => Promise<Offer[]>,
 }
 
@@ -258,7 +258,7 @@ export default function createPg(log: Log, prisma: PrismaClient): Pg {
         );
     }
 
-    async function offerSetStatus(id: UUID, status: Status) {
+    async function offerStatusSet(id: UUID, status: Status) {
         return prisma.offer.update({
             where: { id: id },
             data: { status },
@@ -294,7 +294,7 @@ export default function createPg(log: Log, prisma: PrismaClient): Pg {
         bundleCandidates,
 
         offersCreate,
-        offerSetStatus,
+        offerStatusSet,
         offersAdmin,
     };
 }

api/src/rpc.ts

@@ -0,0 +1,100 @@
+import { EventEmitter } from 'node:events';
+import { setTimeout } from 'timers/promises';
+import assert from 'assert/strict';
+
+import type Log from 'bunyan';
+
+import type { Want, Offer, User } from '@prisma/client';
+
+import { Pg } from './pg';
+import { Status } from './offers';
+
+function checkMsgType(msgType: RpcMessageType): msgType is RpcMessageType {
+    if (RpcMessageType[msgType]) {
+        return true;
+    }
+    return false;
+}
+
+// rpc is created per connection from the api
+export default function createRpc(log: Log, pg: Pg, user: User, ws, discogs, offers) {
+    async function ping(): Promise<PongMessage> {
+        return [RpcMessageType.Pong, []];
+    }
+
+    async function offerStatusSet(params: OfferStatusSetParams): Promise<OffersMessage> {
+        log.info(params);
+        const { id, status } = params;
+        assert(id, 'no id supplied');
+        assert(Status[status], 'unknown status');
+
+        const offer = await offers.statusSet(user, id, status);
+        return [RpcMessageType.Offers, []]
+    }
+
+    async function receive(message: any): Promise<RpcMessage> {
+        const [msgType, params] = message;
+
+        if (msgType !== RpcMessageType.Ping) log.info({ msgType, params }, 'rpc message');
+
+        // // this sucks but can't figure out how to convince typescript to agree yet
+        if (checkMsgType(msgType)) {
+            switch (msgType) {
+            case RpcMessageType.Ping:
+                return ping();
+            case RpcMessageType.OfferStatusSet:
+                return offerStatusSet(params);
+            default:
+                throw new Error(`Message type ${msgType} is known but unhandled`);
+            }
+        } else {
+            throw new Error(`Unknown message type ${msgType}`);
+        }
+
+        throw new Error(`Invalid parameters for message type ${msgType}: ${JSON.stringify(message)}`);
+    }
+
+    function send(msg: RpcMessage) {
+        ws.send(JSON.stringify(msg, (key, value) =>
+            typeof value === 'bigint'
+                ? value.toString()
+                : value // return everything else unchanged
+        ))
+    }
+
+    return {
+        receive,
+        send,
+    }
+}
+
+export enum RpcMessageType {
+    Ping = 'Ping',
+    Pong = 'Pong',
+
+    Bundles = 'Bundles',
+    Offers = 'Offers',
+    List = 'List',
+    Error = 'Error',
+
+    OfferStatusSet = 'OfferStatusSet',
+}
+
+type ErrorMessage = [RpcMessageType.Error, string];
+type PongMessage = [RpcMessageType.Pong, []];
+type PingMessage = [RpcMessageType.Ping, []];
+type OffersMessage = [RpcMessageType.Offers, Offer[]];
+type OfferStatusSetMessage = [RpcMessageType.OfferStatusSet, Offer[]];
+
+export type RpcMessage =
+    PingMessage |
+    PongMessage |
+    OffersMessage |
+    OfferStatusSetMessage |
+    ErrorMessage;
+
+
+type OfferStatusSetParams = {
+    id: UUID,
+    status: Status,
+};

client/package-lock.json

@@ -16,8 +16,7 @@
                 "preact-router": "^3.2.1",
                 "react-feather": "^2.0.10",
                 "react-redux": "^8.0.2",
-                "redux": "^4.2.0",
-                "unistore": "^3.5.2"
+                "redux": "^4.2.0"
             },
             "devDependencies": {
                 "@babel/plugin-transform-react-jsx-source": "^7.18.6",
@@ -19059,19 +19058,6 @@
                 "node": ">=8"
             }
         },
-        "node_modules/unistore": {
-            "version": "3.5.2",
-            "resolved": "https://registry.npmjs.org/unistore/-/unistore-3.5.2.tgz",
-            "integrity": "sha512-2Aa4eX0Ua1umyiI3Eai6Li+wXYOHgaDBGOPB3Hvw7PAVuD30TAyh5kS4yNKb2fLDbQgizvPhKQRcYnOdfsm4VQ==",
-            "peerDependenciesMeta": {
-                "preact": {
-                    "optional": true
-                },
-                "react": {
-                    "optional": true
-                }
-            }
-        },
         "node_modules/universalify": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
@@ -35978,11 +35964,6 @@
                 "crypto-random-string": "^2.0.0"
             }
         },
-        "unistore": {
-            "version": "3.5.2",
-            "resolved": "https://registry.npmjs.org/unistore/-/unistore-3.5.2.tgz",
-            "integrity": "sha512-2Aa4eX0Ua1umyiI3Eai6Li+wXYOHgaDBGOPB3Hvw7PAVuD30TAyh5kS4yNKb2fLDbQgizvPhKQRcYnOdfsm4VQ=="
-        },
         "universalify": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",

client/src/app.tsx

@@ -20,6 +20,7 @@ import store, { userState, wsState } from './store'
 const ws = createWs(store);
 ws.connect();
 
+// dodgy, doesn't cause the header to rerender
 async function init() {
     const [error, user] = await http.getLogin();
     if (error) return route('/login');
@@ -27,7 +28,6 @@ async function init() {
     store.dispatch(userState.actions.set(user));
     store.dispatch(wsState.actions.set(ws));
 }
-
 init();
 
 const App = () => {

client/src/components/offer.tsx

@@ -7,7 +7,7 @@ import http from '../http';
 export default function Offer(offer) {
     const { want: { data: details } } = offer;
 
-    const [accepted, setAccepted] = useState(offer.status !== 'pending');
+    const [accepted, setAccepted] = useState(offer.status !== 'Pending');
 
     async function onClick() {
         const [error] = await http.postOfferAccept(offer.id);

client/src/routes/acp.tsx

@@ -1,21 +1,30 @@
 import { h } from 'preact';
 import { useState, useEffect } from 'preact/hooks';
-import { connect } from 'unistore/preact'
 
 import http from './../http';
 import AcpOffer from './../components/acp.offer';
 
-// hmmm
-// bundle...
-import { Status } from './../../../api/src/offers'
+import { useSelector, useDispatch } from 'react-redux'
+import { State } from './../store';
+
+enum Status {
+    Pending      = 'Pending',
+    Accepted     = 'Accepted',
+    Declined     = 'Declined',
+    Ordered      = 'Ordered',
+    Complete     = 'Complete',
+}
 
 function Item({ item }) {
+    const ws = useSelector((state: State) => state.ws);
+    console.log(item);
+
     const statuses = Object.entries(Status).map(([label, value]) => (
-        <option value={value}>{label}</option>
+        <option selected={item.status === value} value={value}>{value}</option>
     ));
 
     function onChange(e) {
-        console.log(item.id, e.target.value);
+        ws.sendOfferStatusSet(item.id, e.target.value);
     }
 
     return (

client/src/store.tsx

@@ -31,7 +31,10 @@ const reducer = combineReducers({
   ws: wsState.reducer,
 });
 
-const store = createStore(reducer);
+const store = createStore(
+  reducer,
+  window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
+);
 
 export default store;
 

client/src/style/index.less

@@ -227,11 +227,11 @@ article {
 }
 
 .list {
-    display: flex;
-    flex-flow: row wrap;
+    display: grid;
+    grid-template-columns:
+        1fr 1fr 1fr 1fr;
 
     article {
-        flex: 1 1 20%;
         padding: var(--base-spacing);
         margin: var(--base-spacing-half);
     }

client/src/ws.ts

@@ -24,13 +24,13 @@ export default function createSocket(store) {
         // setTimeout(sendPing, 50);
     }
 
-    function sendSourcesAvailable() {
-        send(['SourcesAvailable', {}]);
+    function sendOfferStatusSet(id, status) {
+        send(['OfferStatusSet', { id, status }]);
     }
 
     let pongTimeout;
     function onPong() {
-        pongTimeout = setTimeout(sendPing, 1000);
+        pongTimeout = setTimeout(sendPing, 5000);
     }
 
     // -------------
@@ -108,6 +108,6 @@ export default function createSocket(store) {
     return {
         connect,
 
-        sendSourcesAvailable,
+        sendOfferStatusSet,
     };
 }