Add isword module

Dockerfile

@@ -1,4 +1,11 @@
-FROM node:18
+FROM node:18-ubuntu
+
+
+# Install american word lists for /isword
+RUN apt-get update && apt-get install -y \
+  wamerican \
+  # wamerican-insane \
+  && rm -rf /var/lib/apt/lists/*
 
 ADD package.json .
 ADD yarn.lock .

src/app.module.ts

@@ -2,9 +2,10 @@ import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { ParkioModule } from './parkio/parkio.module';
+import { IswordModule } from './isword/isword.module';
 
 @Module({
-  imports: [ParkioModule],
+  imports: [ParkioModule, IswordModule],
   controllers: [AppController],
   providers: [AppService],
 })

src/isword/isword.controller.ts

@@ -0,0 +1,24 @@
+import { Body, Controller, Get, Param, Post } from '@nestjs/common';
+import { IswordService } from './isword.service';
+
+export type AreWordsDto = string[]
+
+@Controller('isword')
+export class IswordController {
+    constructor(
+        private readonly isWordService: IswordService
+    ) {}
+
+    @Get(':word')
+    isWord(@Param('word') word: string) {
+        return this.isWordService.isWord(word)
+    }
+
+    @Post()
+    areWords(@Body() body: AreWordsDto) {
+        return body.reduce((acc, word) => {
+            acc[word] = this.isWordService.isWord(word)
+            return acc;
+        }, {} as {[key: string]: boolean})
+    }
+}

src/isword/isword.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { IswordService } from './isword.service';
+import { IswordController } from './isword.controller';
+
+@Module({
+  providers: [IswordService],
+  controllers: [IswordController]
+})
+export class IswordModule {}

src/isword/isword.service.ts

@@ -0,0 +1,15 @@
+import { Injectable } from '@nestjs/common';
+import { readFileSync } from 'fs';
+
+@Injectable()
+export class IswordService {
+    private readonly dict: string = '/usr/share/dict/words';
+    private readonly dictContents: string[];
+    constructor() {
+        this.dictContents = readFileSync(this.dict).toString().split('\n')
+
+    }
+
+    isWord = (word: string) => 
+        this.dictContents.includes(word)
+}