init

src/api.ts

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+import * as cheerio from 'cheerio';
+import { IncomingMessage } from 'http';
+import http from 'https';
+
+//making long regex rather than splitting the string at ":" because regex would be easier to debug than logic in the case the website changes
+//while names cant have spaces, the name slot in ogtitle could be shown as "No Player Name" which has spaces
+const uniteApiRegex = {
+    //$1 = name, $2 = id
+    ogtitle: /Unite API - ([\w\d ]+) \((.*)\)/,
+    //$1 = level, $2 = rank, $3 = elo, $4 = battles, $5 = wins, $6 = win rate
+    ogdescription: /Pokémon Unite : Lv.(\d+) (\w+) \((\d+)\)\n    Battles : (\d+)\n    Wins : (\d+)\n    Win Rate : (\d+)%/,
+}
+
+type uniteApiData = {
+    name: string,
+    id: string,
+
+    level: string,
+    rank: string,
+    elo: string,
+    battles: string,
+    wins: string,
+    winrate: string
+}
+/*
+og:title
+Unite API - IanWhysp (X188GF7)
+
+og:description
+Pokémon Unite : Lv.40 Master (1741)
+    Battles : 1089
+    Wins : 576
+    Win Rate : 52%
+*/
+
+/**
+ * gets the html of the uniteApi page for the player
+ * @param name name of player
+ * @returns the html of the page through a promise (rejects if the page status is not 200)
+ */
+function getHTML(name: string): Promise<string> {
+
+    name = name.replace(/[^\w\d]/g, '');
+
+    return new Promise((resolve, reject) => {
+        
+        const init = {
+            host: 'uniteapi.dev',
+            path: `/p/${encodeURIComponent(name)}`,
+            method: 'GET',
+        };
+
+        const callback = (response: IncomingMessage) => {
+            
+            if (response.statusCode !== 200) {
+                reject(`HTTP ERROR ${response.statusCode}: ${response.statusMessage}`);
+                return;
+            }
+
+            let result = Buffer.alloc(0);
+            response.on('data', function(chunk) {
+                result = Buffer.concat([result, chunk]);
+            });
+            
+            response.on('end', function() {
+                // result has response body buffer
+                resolve(result.toString());
+            });
+        };
+
+        const req = http.request(init, callback);
+        req.end();
+
+    });
+
+}
+
+/**
+ * interprets the html from getHTML()
+ * @param name name of player
+ * @returns player data from site
+ */
+function readHTML(html: string): uniteApiData {
+    let metaElems = cheerio.load(html)('meta').toArray(),
+        foundData: uniteApiData = {
+            name: "",
+            id: "",
+
+            level: "",
+            rank: "",
+            elo: "",
+            battles: "",
+            wins: "",
+            winrate: ""
+        };
+    
+    //filter down to just ones named "og:..."
+    metaElems = metaElems.filter(el => el.attribs.property?.startsWith('og:'));
+
+    metaElems.forEach(el => {
+        let attr = el.attribs;
+
+        if (attr.property === 'og:title') {
+            let data = uniteApiRegex.ogtitle.exec(attr.content);
+            if (data !== null && data.length >= 3) {
+                foundData.name = data[1];
+                foundData.id = data[2];
+            }
+        } else if (attr.property === 'og:description') {
+            let data = uniteApiRegex.ogdescription.exec(attr.content);
+            if (data !== null && data.length >= 7) {
+                foundData.level = data[1];
+                foundData.rank = data[2];
+                foundData.elo = data[3];
+                foundData.battles = data[4];
+                foundData.wins = data[5];
+                foundData.winrate = data[6];
+            }
+        }
+
+    })
+
+    return foundData;
+
+}
+
+/**
+ * verifies the data
+ * @param data uniteApi data
+ * @returns boolean, valid or invalid
+ */
+function verifyData(data: uniteApiData): boolean {
+    if (data.id.length)
+        return true;
+    return false;
+}
+
+/**
+ * gets player data from uniteApi
+ * @param name name of player
+ * @returns player data
+ */
+export async function getPlayer(name: string): Promise<uniteApiData|null> {
+    let html = await getHTML(name);
+    let data = readHTML(html);
+    if (verifyData(data))
+        return data;
+    return null;
+}
+
+//await getPlayer('IanWhysp')

src/index.ts

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+import { getPlayer } from "./api";
+
+(async () => {
+    console.log(await getPlayer('asldhasuhdbla'));
+})()