Add parkio

src/parkio/parkio.service.ts

@@ -0,0 +1,117 @@
+import { Injectable } from '@nestjs/common';
+import {
+  Auction,
+  AuctionsResponse,
+  Domain,
+  DomainSet,
+  DomainsResponse,
+  ParkioTld,
+  ParsedAuction,
+  ParsedDomain,
+} from './types';
+import axios from 'axios';
+import { filter, map, pipe } from 'ramda';
+
+const parkIoEndpoints = {
+  domains: 'https://park.io/domains.json',
+  auctions: 'https://park.io/auctions.json',
+  tld: (tld: ParkioTld) => `https://park.io/domains/index/${tld}.json`,
+  all: (limit: number = 10_000) =>
+    `https://park.io/domains/index/all.json?limit=${limit}`,
+};
+
+@Injectable()
+export class ParkioService {
+  fetchDomainsForTld = async (tld: ParkioTld) => {};
+
+  fetchAllDomains = async (limit: number = 10_000): Promise<ParsedDomain[]> => {
+    let response = await axios.get<DomainsResponse>(parkIoEndpoints.all(limit));
+
+    // There may have been more than our set limit
+    if (response.data.current === limit) {
+      return await this.fetchAllDomains(limit + 200);
+    }
+
+    return map(this.parseDomain, response.data.domains);
+  };
+
+  fetchAuctions = async (): Promise<ParsedAuction[]> => {
+    const response = await axios.get<AuctionsResponse>(
+      parkIoEndpoints.auctions,
+    );
+
+    return map(this.parseAuction, response.data.auctions);
+  };
+
+  lengthFilter = (length: number) => (parsedDomain: ParsedDomain) =>
+    parsedDomain.domain.length === length;
+
+  buildExtensions = (domains: ParsedDomain[], extensions: ParkioTld[]) =>
+    pipe(
+      map((extension: ParkioTld) =>
+        pipe(
+          filter(this.tldFilter(extension)),
+          filter(this.maxLengthFilter(3)),
+        )(domains),
+      ),
+    )(extensions);
+
+  extractDomain = (domain: string): string =>
+    domain.split('.').slice(0, -1).join('.');
+
+  extractTld = (domain: string): string =>
+    domain.split('.').slice(-1).join('.');
+
+  parseDomain = (domain: Domain): ParsedDomain => {
+    const domainName = this.extractDomain(domain.name);
+    return {
+      ...domain,
+      id: Number(domain.id),
+      domain: domainName,
+      domain_length: domainName.length,
+      date_available: domain.date_available
+        ? this.parseDate(domain.date_available)
+        : undefined,
+      date_registered: domain.date_registered
+        ? this.parseDate(domain.date_registered)
+        : undefined,
+    };
+  };
+
+  parseDate = (date: string) =>
+    new Date(
+      Date.parse(
+        date.replace(
+          /(\d+)-(\d+)-(\d+)UTC(\d+:\d+:\d{0,2})\d*/,
+          '$1-$3-$2T$4Z',
+        ),
+      ),
+    );
+
+  parseAuction = (auction: Auction): ParsedAuction => {
+    const domain = this.extractDomain(auction.name);
+    const tld = this.extractTld(auction.name);
+    return {
+      ...auction,
+      id: Number(auction.id),
+      num_bids: Number(auction.num_bids),
+      price: Number(auction.price),
+      close_date: this.parseDate(auction.close_date),
+      created: this.parseDate(auction.created),
+      domain,
+      domain_length: domain.length,
+      tld,
+    };
+  };
+
+  domainToString = (domain: ParsedDomain) =>
+    `${domain.name}\t${domain.date_available}`;
+
+  auctionToString = (auction: ParsedAuction) =>
+    `${auction.name}\t$${auction.price}\t${auction.close_date}`;
+
+  tldFilter = (tld: ParkioTld) => (domain: ParsedDomain) => domain.tld === tld;
+
+  maxLengthFilter = (length: number) => (parsedDomain: ParsedDomain) =>
+    parsedDomain.domain.length <= length;
+}