Add parkio

src/app.controller.spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+describe('AppController', () => {
+  let appController: AppController;
+
+  beforeEach(async () => {
+    const app: TestingModule = await Test.createTestingModule({
+      controllers: [AppController],
+      providers: [AppService],
+    }).compile();
+
+    appController = app.get<AppController>(AppController);
+  });
+
+  describe('root', () => {
+    it('should return "Hello World!"', () => {
+      expect(appController.getHello()).toBe('Hello World!');
+    });
+  });
+});

src/app.controller.ts

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+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @Get()
+  getHello(): string {
+    return this.appService.getHello();
+  }
+}

src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+import { ParkioModule } from './parkio/parkio.module';
+
+@Module({
+  imports: [ParkioModule],
+  controllers: [AppController],
+  providers: [AppService],
+})
+export class AppModule {}

src/app.service.ts

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+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AppService {
+  getHello(): string {
+    return 'Hello World!';
+  }
+}

src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+  await app.listen(3000);
+}
+bootstrap();

src/parkio/parkio.controller.ts

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+import { Controller, Get, Param } from '@nestjs/common';
+import { ParkioService } from './parkio.service';
+
+@Controller('parkio')
+export class ParkioController {
+    constructor(
+        private readonly parkioService: ParkioService
+    ) {}
+
+    @Get('auctions')
+    async getAuctions () {
+        return this.parkioService.fetchAuctions();
+    }
+
+    @Get('domains')
+    async getDomains () {
+        return this.parkioService.fetchAllDomains();
+    }
+
+    @Get('short/:maxLength')
+    async getShort (@Param('maxLength') maxLength: number) {
+        return {
+            maxLength,
+            domains: (await this.parkioService.fetchAllDomains()).filter(
+                parsedDomain => parsedDomain.domain_length <= maxLength
+            ),
+            auctions: (await this.parkioService.fetchAuctions()).filter(
+                parsedAuction => parsedAuction.domain_length <= maxLength
+            ),
+        }
+
+    }
+}

src/parkio/parkio.module.ts

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+import { Module } from '@nestjs/common';
+import { ParkioService } from './parkio.service';
+import { ParkioController } from './parkio.controller';
+
+@Module({
+  providers: [ParkioService],
+  controllers: [ParkioController]
+})
+export class ParkioModule {}

src/parkio/parkio.service.ts

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+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;
+}

src/parkio/types.ts

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+export const TLDs = [
+  'io',
+  'co',
+  'us',
+  'to',
+  'gg',
+  'ly',
+  'vc',
+  'me',
+  'sh',
+  'bz',
+  'ag',
+  'sc',
+  'ac',
+  'lc',
+  'je',
+  'mn',
+  'pro',
+  'info',
+  'red',
+] as const;
+
+export type ParkioTld = typeof TLDs[number];
+
+export type DomainSet = { [key: string]: ParsedDomain[] };
+
+export interface Domain {
+  id: string;
+  name: string;
+  date_available: string;
+  date_registered: string;
+  tld: string;
+}
+
+export interface Auction {
+  id: string;
+  name: string;
+  num_bids: string;
+  price: string;
+  close_date: string;
+  created: string;
+}
+
+export interface ParsedAuction {
+  id: number;
+  name: string;
+  domain: string;
+  domain_length: number;
+  tld: string;
+  num_bids: number;
+  price: number;
+  close_date: Date;
+  created: Date;
+}
+
+export interface ParsedDomain {
+  id: number;
+  domain: string;
+  domain_length: number
+  name: string;
+  tld: string;
+  date_available?: Date;
+  date_registered?: Date;
+}
+
+export interface BaseResponse {
+    page: number,
+    current: number,
+    count: number,
+    prevPage: boolean,
+    nextPage: boolean,
+    pageCount: number;
+    limit: number,
+    success: boolean,
+}
+
+export interface DomainsResponse extends BaseResponse{
+    domains: Domain[]
+}
+
+export interface AuctionsResponse extends BaseResponse {
+    auctions: Auction[]
+}