learn-request-queue/src/app.ts

import * as config from "./config";
import * as requests from "./requests";
import { QueryResult } from "pg";
import express from "express";
import db from "./db";
import errorHandler from "./errors";

const app = express();
app.use(express.static('public'));
app.use(express.urlencoded({extended: false}));

app.get("/api/getRequests", async (request, response) => {
	var requestCount = ( request.query.count ? parseInt(request.query.count as string, 10) : 5 );
	requests.getRequests(requestCount).then((val: QueryResult) => response.send(val))
	.catch((e: any) => errorHandler(request,response,e));
});

app.get("/api/getAllRequests", async (request, response) => {
	var requestCount = ( request.query.count ? parseInt(request.query.count as string, 10) : 5 );
	requests.getAllRequests(requestCount).then((val: QueryResult) => response.send(val))
	.catch((e: any) => errorHandler(request,response,e));
});

app.post("/api/addRequest", async (request, response) => {
	response.type('text/plain');
	if (!request.body.url) {
		response.status(400);
		response.send("Missing url");
		return
	}
	if (!request.body.requester) {
		response.status(400);
		response.send("Missing requester");
		return
	}
	var url = request.body.url as string;
	var requester = request.body.requester as string;
	requests.addRequest(url,requester).then((val: string) => response.send(val))
	.catch((e: any) => errorHandler(request,response,e));
});

app.post("/api/updateRequestState", async (request, response) => {
	response.type('text/plain');
	if (!request.body.url) {
		response.status(400);
		response.send("Missing url");
		return
	}
	if (!request.body.state) {
		response.status(400);
		response.send("Missing scoreDiff");
		return
	}
	var url = request.body.url as string;
	var state = request.body.state as string;
	requests.updateRequestState(url,state).then((val: [number,string]) => {
		response.status(val[0]);
		response.send(val[1]);
	})
	.catch((e: any) => errorHandler(request,response,e));
});

app.post("/api/updateRequestScore", async (request, response) => {
	response.type('text/plain');
	if (!request.body.url) {
		response.status(400);
		response.send("Missing url");
		return
	}
	if (!request.body.scoreDiff) {
		response.status(400);
		response.send("Missing scoreDiff");
		return
	}
	var url = request.body.url as string;
	var scoreDiff = parseInt(request.body.scoreDiff as string, 10);
	requests.updateRequestScore(url,scoreDiff).then((val: string) => response.send(val))
	.catch((e: any) => errorHandler(request,response,e));
});

app.post("/api/deleteRequest", async (request, response) => {
	response.type('text/plain');
	if (!request.body.url) {
		response.status(400);
		response.send("Missing url");
		return
	}
	var url = request.body.url as string;
	requests.deleteRequest(url).then((val: string) => response.send(val))
	.catch((e: any) => errorHandler(request,response,e));
});

const server = app.listen(config.port, () => {
  console.log(`Listening on port ${config.port}`);
});