offers wip

api/index.ts

@@ -5,6 +5,16 @@ import { Events } from './src/events';
 async function start() {
     const log = createLog();
 
+    process.on('uncaughtException', (err, origin) => {
+        log.error({ err, origin }, 'uncaughtException');
+        process.exit(1);
+    });
+
+    process.on('unhandledRejection', (reason, promise) => {
+        log.error({ reason, promise }, 'unhandledRejection');
+        process.exit(1);
+    });
+
     process.on('SIGTERM', () => {
       log.debug('SIGTERM received, exiting');
       process.exit(0);

api/prisma/schema.prisma

@@ -16,6 +16,8 @@ model Listing {
     wantId     String   @db.Uuid
     want       Want     @relation(fields: [wantId], references: [id], onDelete: Cascade, onUpdate: Cascade)
 
+    offers      Offer[]
+
     createdAt  DateTime @default(now())
     updatedAt  DateTime @updatedAt
 
@@ -32,6 +34,7 @@ model User {
     updatedAt  DateTime   @updatedAt
 
     wants      Want[]
+    offers     Offer[]
 
     @@map("users")
 }
@@ -48,9 +51,36 @@ model Want {
     updatedAt  DateTime   @updatedAt
 
     listings   Listing[]
+    offers     Offer[]
 
     @@unique([userId, release])
     @@index([release])
 
     @@map("wants")
 }
+
+model Offer {
+    id              String     @id       @default(dbgenerated("gen_random_uuid()")) @db.Uuid
+
+    status          String
+
+    item            Decimal    @db.Money
+    shipping        Decimal    @db.Money
+    total           Decimal    @db.Money
+    comparison      Decimal    @db.Money
+
+    sellerId        Int
+
+    listingId       Int
+    listing         Listing    @relation(fields: [listingId], references: [id])
+
+    userId          String     @db.Uuid
+    user            User       @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)
+
+    wantId          String     @db.Uuid
+    want            Want       @relation(fields: [wantId], references: [id], onDelete: Cascade, onUpdate: Cascade)
+
+    // only one offer per want for a user
+    @@unique([userId, wantId])
+    @@map("offers")
+}

api/src/api.test.ts

@@ -5,10 +5,13 @@ import createServices from './services';
 import createLog from './log';
 
 const log = createLog();
-log.level('error');
+log.level('debug');
 const services = createServices(log);
 
-const HOST = 'http://localhost:41337';
+const api = axios.create({
+  baseURL: 'http://localhost:41337',
+  withCredentials: true
+});
 
 before(function setup() {
     services.api.listen();
@@ -19,8 +22,9 @@ after(function teardown(done) {
 });
 
 describe('api', function apiTests() {
+    describe.skip('auth', function authTests() {
         it('listens', async function listenTest() {
-        const res = await axios.get(`${HOST}/health`);
+            const res = await api.get('/health');
             assert.equal(res.status, 200);
         });
 
@@ -29,7 +33,7 @@ describe('api', function apiTests() {
                 email: `test+${Date.now()}@user.com`,
                 password: 'woaaah theres no limit',
             };
-        const { data } = await axios.post(`${HOST}/auth/register`, body);
+            const { data } = await api.post('/auth/register', body);
             assert.equal(data.email, body.email);
         });
 
@@ -38,10 +42,17 @@ describe('api', function apiTests() {
                 email: `test+${Date.now()}@user.com`,
                 password: 'woaaah theres no limit',
             };
-        await axios.post(`${HOST}/auth/register`, body);
+            await api.post('/auth/register', body);
-        const res = await axios.post(`${HOST}/auth/login`, body);
+            const res = await api.post('/auth/login', body);
             assert(res.headers['set-cookie']);
         })
-
     });
 
+    describe('offers', function offerTests() {
+        it('create offers', async function createOffersTest() {
+            const { data: bundles } = await api.get('/bundles');
+            const { seller } = bundles[0];
+            const { data } = await api.post('/offers', { seller, shipping: 50.0, baseShipping: 15.0 });
+        });
+    });
+});

api/src/api.ts

@@ -16,7 +16,7 @@ import { Pg } from './pg';
 import routerAuth from './routers/router.auth';
 import { Events } from './events';
 
-export default function createApi(log: Log, pg: Pg, discogs, events) {
+export default function createApi(log: Log, pg: Pg, discogs, offers, events) {
     const PORT = 41337;
     const SECRET = 'ohja4Eif9eidah3aj5ta2haa4iemooth';
 
@@ -46,13 +46,14 @@ export default function createApi(log: Log, pg: Pg, discogs, events) {
         const bundles = await pg.bundleCandidates();
 
         return bundles.map((b: ListingData[]) => {
-            const total = b.reduce((acc, l) => acc + l.data.original_price.value, 0);
+            const total = b.reduce((acc, l) => acc + l.data.price.value, 0);
-
             const items = b.map(l => ({
                 id: l.data.id,
                 description: l.data.release.description,
-                price: l.data.original_price.value,
+                originalPrice: l.data.original_price.value,
-                currency: l.data.original_price.curr_abbr,
+                originalCurrency: l.data.original_price.curr_abbr,
+                price: l.data.price.value,
+                currency: l.data.price.currency,
                 condition: l.data.condition,
                 uri: l.data.uri,
                 user: l.want.user,
@@ -65,7 +66,7 @@ export default function createApi(log: Log, pg: Pg, discogs, events) {
                 seller: b[0]?.data.seller.id,
                 shipsFrom: b[0]?.data.ships_from,
                 total,
-                currency: b[0]?.data.original_price.curr_abbr,
+                currency: b[0]?.data.price.currency,
                 shipping: '...',
                 items,
                 mentionsAustralia: shipping.toLowerCase().includes('australia'),
@@ -108,17 +109,16 @@ export default function createApi(log: Log, pg: Pg, discogs, events) {
         ctx.response.body = bundles;
     })
 
+    router.post('/offers', async (ctx, next) => {
+        const { seller, shipping, baseShipping } = ctx.request.body;
+        ctx.response.body = await offers.generate(seller, shipping, baseShipping);
+    })
+
     router.get('/user/offers', async function userOffersGet(ctx, next) {
         ctx.assert(ctx.isAuthenticated(), 401, 'log in required');
         const user = ctx.state.user;
-        const bundles = (await getBundles())
+        const offers = await pg.userOffers(user);
-            .map(b => {
+        ctx.response.body = offers;
-                b.items = b.items.filter(i => i.user.id === user.id);
-                return b;
-            })
-            .filter(b => b.items.length);
-
-        ctx.response.body = bundles;
     });
 
     router.post('/want', async function wantPost(ctx, next) {

api/src/discogs.ts

@@ -14,7 +14,7 @@ import { Pg } from './pg';
 // vanderbabe
 // jmcdermid1
 
-export default function discogs(log: Log, pg: Pg) {
+export default function createDiscogs(log: Log, pg: Pg) {
     const TOKEN = 'Discogs token=wRTXuYZGOPsIQgKRGKCAkUkidGtvpSfQgPWkYIpD';
     const apiBase = 'https://api.discogs.com'
     const discogsBase = 'https://www.discogs.com'

api/src/events.ts

@@ -11,7 +11,7 @@ export enum Events {
     StartupSync = 'StartupSync',
 }
 
-export function eventService(log: Log, pg: Pg, discogs) {
+export default function createEvents(log: Log, pg: Pg, discogs) {
     const events = new EventEmitter({ captureRejections: true });
 
     events.on('error', function eventError(e) {

api/src/offers.ts

@@ -0,0 +1,52 @@
+import type Log from 'bunyan';
+import type { PrismaClient, Want, User, Listing, Offer, } from '@prisma/client';
+import groupBy from 'lodash/groupBy';
+import sortBy from 'lodash/sortBy';
+
+import { logAxiosError } from './utils';
+import { Pg } from './pg';
+
+export enum Status {
+    Pending      = 'pending',
+    Accepted     = 'accepted',
+    Ordered      = 'ordered',
+    Delivered    = 'delivered',
+}
+
+export default function createOffers(log: Log, pg: Pg) {
+    async function generate(seller: number, bulkShipping: number, baseShipping: number): Offer[] {
+        log.info('generateOffers', { seller, bulkShipping, baseShipping });
+        const listings = await pg.listingFindSeller(seller);
+
+        log.info('creating offers for listings', { listings })
+
+        const shipping = bulkShipping / listings.length;
+        const offers = listings.map(l => ({
+            userId: l.want.user.id,
+            listingId: l.id,
+            wantId: l.want.id,
+
+            status: Status.Pending,
+
+            item: l.data.price.value,
+            shipping,
+            total: l.data.price.value + shipping,
+
+            // without mcrates...
+            comparison: l.data.price.value + baseShipping,
+        }))
+
+        // we must sort the offers by price,
+        // sometimes a seller has multiples of a want
+        // to deal with this we just ignore duplicates on insert
+        // and ensure the cheapest one goes in first
+        const sorted = sortBy(offers, ['item']);
+        const inserts = await pg.offersCreate(sorted);
+        console.log(inserts);
+        return inserts;
+    }
+
+    return {
+        generate,
+    };
+}

api/src/pg.ts

@@ -1,6 +1,6 @@
 import bcrypt from 'bcrypt';
 import type Log from 'bunyan';
-import type { PrismaClient, Want, User, Listing, Prisma } from '@prisma/client';
+import type { PrismaClient, Want, User, Listing, Offer, Prisma } from '@prisma/client';
 import * as Bluebird from 'bluebird';
 
 export interface UserCreateParams {
@@ -13,15 +13,20 @@ export interface Pg {
     userFindEmail:      (email: Email) => Promise<User>,
     userCreate:         (params: UserCreateParams) => Promise<User>,
     userWants:          (user: User) => Promise<Want[]>,
+    userOffers:         (user: User) => Promise<Offer[]>,
+
+    listingUpsert:      (listing: Listing, want: Want) => Promise<Listing>,
+    listingFind:        (id: DiscogsListing) => Promise<Listing>,
+    listingFindSeller:  (id: DiscogsSeller) => Promise<Listing[]>,
+    listingRmUnlisted:  (want: Want, ids: DiscogsListing[]) => Promise<number>,
 
     wantCreate:         (discogsWant: any, user: User) => Promise<Want>,
     wantList:           (user: User) => Promise<Want[]>,
     wantsToSync:        () => Promise<Want[]>,
-    listingUpsert:      (listing: Listing, want: Want) => Promise<Listing>,
-    listingFind:        (id: DiscogsListing) => Promise<Listing>,
-    listingRmUnlisted:  (want: Want, ids: DiscogsListing[]) => Promise<number>,
 
     bundleCandidates:   () => Promise<Listing[][]>,
+
+    offersCreate:       (offers: Offer[]) => Promise<Offer[]>,
 }
 
 export default function createPg(log: Log, prisma: PrismaClient): Pg {
@@ -37,6 +42,15 @@ export default function createPg(log: Log, prisma: PrismaClient): Pg {
         return prisma.want.findMany({ where: { userId: user.id }});
     }
 
+    async function userOffers(user: User) {
+        return prisma.offer.findMany({
+            where: { userId: user.id },
+            include: {
+                want: true,
+            }
+        });
+    }
+
     async function userCreate(params: UserCreateParams) {
         const hashRounds = 10;
         const password = await bcrypt.hash(params.password, hashRounds);
@@ -131,6 +145,19 @@ export default function createPg(log: Log, prisma: PrismaClient): Pg {
         });
     }
 
+    async function listingFindSeller(seller: DiscogsSeller): Promise<Listing[]> {
+        return prisma.listing.findMany({
+            where: {
+                seller,
+            },
+            include: {
+                want: {
+                    include: { user: true },
+                }
+            }
+        });
+    }
+
     async function bundleCandidates(): Promise<Listing[][]> {
         const candidates = await prisma.$queryRaw`
             select
@@ -157,11 +184,27 @@ export default function createPg(log: Log, prisma: PrismaClient): Pg {
         })));
     }
 
+    async function offersCreate(offers: Offer[]) {
+        return await prisma.$transaction(
+            offers.map(offer => prisma.offer.upsert({
+                where: {
+                    userId_wantId: {
+                        userId: offer.userId,
+                        wantId: offer.wantId,
+                    },
+                },
+                create: offer,
+                update: offer
+            }))
+        );
+    }
+
     return {
         userFindId,
         userFindEmail,
         userCreate,
         userWants,
+        userOffers,
 
         wantCreate,
         wantList,
@@ -169,7 +212,9 @@ export default function createPg(log: Log, prisma: PrismaClient): Pg {
         listingUpsert,
         listingFind,
         listingRmUnlisted,
+        listingFindSeller,
 
         bundleCandidates,
+        offersCreate,
     };
 }

api/src/services.ts

@@ -1,17 +1,19 @@
 import { PrismaClient } from '@prisma/client'
 
-import discogsService from './discogs';
+import createDiscogs from './discogs';
-import pgService from './pg';
+import createOffers from './offers';
 import createLog from './log';
 import createApi from './api';
-import { eventService } from './events';
+import createEvents from './events';
+import createPg from './pg';
 
-export default function createServices(log) {
+export default function creates(log) {
     const prisma = new PrismaClient();
-    const pg = pgService(log, prisma);
+    const pg = createPg(log, prisma);
-    const discogs = discogsService(log, pg);
+    const discogs = createDiscogs(log, pg);
-    const events = eventService(log, pg, discogs);
+    const events = createEvents(log, pg, discogs);
-    const api = createApi(log, pg, discogs, events);
+    const offers = createOffers(log, pg);
+    const api = createApi(log, pg, discogs, offers, events);
 
     return {
         api,

client/disclaimers.txt

@@ -1 +1,2 @@
 This application uses Discogs’ API but is not affiliated with, sponsored or endorsed by Discogs. ‘Discogs’ is a trademark of Zink Media, LLC.
+Data provided by Discogs.

client/src/app.tsx

@@ -20,7 +20,7 @@ function App() {
             const [error, user] = await actions.getLogin();
             if (error) return route('/login');
             setUser(user);
-            route('/search');
+            route('/bundles');
         }
 
         getLogin();

client/src/components/bundle.tsx

@@ -1,21 +1,43 @@
 import { h } from 'preact';
 
 export default function Bundle(bundle) {
+
+
     return (
         <div class="bundle">
+           <section>
                 <h2>{bundle.username} - {bundle.seller}</h2>
                 <h3>{bundle.items.length} items - {bundle.total.toFixed(2)} {bundle.currency}</h3>
                 <h4>Ships: {bundle.mentionsAustralia && 'AU'} {bundle.mentionsWorldwide && 'WORLD'}</h4>
+            </section>
+
+            <section>
+                <form action="">
+                    <div class="item">
+                        <label for="shipping">Full Shipping Cost</label>
+                        <input type="number" name="shipping" id="shipping" required />
+                    </div>
+                    <div class="item">
+                        <label for="baseShipping">Base Shipping Cost</label>
+                        <input type="number" name="baseShipping" id="baseShipping" required />
+                    </div>
+                    <div class="item">
+                        <input type="submit" value="Generate Offers" />
+                    </div>
+                </form>
+            </section>
+
+            <div class='items'>
                 {bundle.items.map(i => (
                     <div key={i.id}>
                         <a href={i.uri} target="_blank" >
                             <h4>{i.description}</h4>
                         </a>
                         <h5>{i.user.name}</h5>
-                    <h5>{i.price} {i.currency}</h5>
+                        <h5>{i.price.toFixed(2)} {i.currency}</h5>
-                    <hr />
                     </div>
                 ))}
             </div>
+        </div>
     )
 }

client/src/components/offer.tsx

@@ -1,19 +1,15 @@
 import { h } from 'preact';
+import { ExternalLink } from 'react-feather';
 
-export default function Bundle(bundle) {
+export default function Offer(offer) {
+    const { want: { data: details } } = offer;
     return (
-        <div class="bundle">
+        <div class="offer">
-            <h3>{bundle.items.length} items - {bundle.total.toFixed(2)} {bundle.currency}</h3>
+            <h2>{details.artists_sort} - {details.title} <a href={details.uri} target="_blank"><ExternalLink /></a></h2>
-            {bundle.items.map(i => (
+            <h5 class='alt-text' >{details.year}</h5>
-                <div key={i.id}>
+            <h5 class='alt-text'>{details.formats[0].descriptions.join(' ')}</h5>
-                    <a href={i.uri} target="_blank" >
+            <img src={details.thumb} />
-                        <h4>{i.description}</h4>
+            <h5>${offer.total}</h5>
-                    </a>
-                    <h5>{i.user.name}</h5>
-                    <h5>{i.price} {i.currency}</h5>
-                    <hr />
-                </div>
-            ))}
         </div>
     )
 }

client/src/routes/bundles.tsx

@@ -18,7 +18,7 @@ function Bundles() {
 
     if (!bundles.length) {
         return (
-            <div class={'home'}>
+            <div class={'bundles'}>
                 loading...
             </div>
         );
@@ -26,7 +26,7 @@ function Bundles() {
 
 
     return (
-        <div class={'home'}>
+        <div class={'bundles'}>
             {bundles.map(Bundle)}
         </div>
     );

client/src/routes/home.tsx

@@ -11,6 +11,7 @@ function Home() {
         async function getOffers() {
             const [error, offers] = await actions.getOffers();
             if (error) return console.error(error);
+            console.log(offers);
             setOffers(offers);
         }
         getOffers();
@@ -18,7 +19,7 @@ function Home() {
 
     if (!offers.length) {
         return (
-            <div class={'home'}>
+            <div class={'offers'}>
                 loading...
             </div>
         );
@@ -26,7 +27,7 @@ function Home() {
 
 
     return (
-        <div class={'home'}>
+        <div class={'offers'}>
             {offers.map(Offer)}
         </div>
     );

client/src/style/index.less

@@ -283,12 +283,30 @@ header {
     padding-bottom: var(--base-spacing);
 }
 
-.home {
+.bundles {
-    display: flex;
+    flex-flow: row;
 
     .bundle {
-        flex: 1;
+        display: grid;
-        padding-right: 1em;
+        grid-template-columns: 2fr 1fr;
+        margin-bottom: var(--base-spacing);
+
+        .items {
+            grid-column: 1 / -1;
+            display: grid;
+            grid-template-columns: repeat(5, 1fr);
+            align-items: stretch;
+
+            div {
+                margin-right: var(--base-spacing);
+                margin-bottom: var(--base-spacing);
+            }
+        }
     }
 }
 
+.offers {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+}
+