refactor: lookup, rm defaults (#69)

prep work for #38

Signed-off-by: Jef LeCompte <jeffreylec@gmail.com>

src/store/index.ts

@@ -1,30 +1,2 @@
-import {BestBuy} from './bestbuy';
-import {BAndH} from './bandh';
-import {Evga} from './evga';
-import {NewEgg} from './newegg';
-import {Nvidia} from './nvidia';
-import {Amazon} from './amazon';
-import {MicroCenter} from './microcenter';
-import {Config} from '../config';
-
-const masterList = new Map([
-	['amazon', Amazon],
-	['bestbuy', BestBuy],
-	['bandh', BAndH],
-	['evga', Evga],
-	['microcenter', MicroCenter],
-	['newegg', NewEgg],
-	['nvidia', Nvidia]
-]);
-
-const list = new Map();
-
-const storeArray = Config.stores.split(',');
-
-for (const name of storeArray) {
-	list.set(name, masterList.get(name));
-}
-
-export const Stores = Array.from(list.values());
-
-export * from './store';
+export * from './lookup';
+export * from './out-of-stock';

src/store/lookup.ts

@@ -0,0 +1,66 @@
+import puppeteer from 'puppeteer';
+import {Config} from '../config';
+import {Logger} from '../logger';
+import open from 'open';
+import {Store} from './model';
+import {sendNotification} from '../notification';
+import {isOutOfStock} from './out-of-stock';
+
+/**
+ * Responsible for looking up information about a each product within
+ * a `Store`. It's important that we ignore `no-await-in-loop` here
+ * because we don't want to get rate limited within the same store.
+ *
+ * @param store Vendor of graphics cards.
+ */
+export async function lookup(store: Store) {
+/* eslint-disable no-await-in-loop */
+	for (const link of store.links) {
+		const browser = await puppeteer.launch();
+		const page = await browser.newPage();
+		page.setDefaultNavigationTimeout(Config.page.navigationTimeout);
+		await page.setUserAgent(Config.page.userAgent);
+		await page.setViewport({
+			height: Config.page.height,
+			width: Config.page.width
+		});
+
+		const graphicsCard = `${link.brand} ${link.model}`;
+
+		try {
+			await page.goto(link.url, {waitUntil: 'networkidle0'});
+		} catch {
+			Logger.error(`✖ [${store.name}] ${graphicsCard} skipping; timed out`);
+			await browser.close();
+			return;
+		}
+
+		const bodyHandle = await page.$('body');
+		const textContent = await page.evaluate(body => body.textContent, bodyHandle);
+
+		Logger.debug(textContent);
+
+		if (isOutOfStock(textContent, link.oosLabels)) {
+			Logger.info(`✖ [${store.name}] ${graphicsCard} is still out of stock`);
+		} else {
+			Logger.info(`🚀🚀🚀 [${store.name}] ${graphicsCard} IN STOCK 🚀🚀🚀`);
+			Logger.info(link.url);
+
+			if (Config.page.capture === 'true') {
+				Logger.debug('ℹ saving screenshot');
+				await page.screenshot({path: `success-${Date.now()}.png`});
+			}
+
+			const givenUrl = store.cartUrl ? store.cartUrl : link.url;
+
+			if (Config.openBrowser === 'true') {
+				await open(givenUrl);
+			}
+
+			sendNotification(givenUrl);
+		}
+
+		await browser.close();
+	}
+/* eslint-enable no-await-in-loop */
+}

src/store/model/index.ts

@@ -0,0 +1,30 @@
+import {BestBuy} from './bestbuy';
+import {BAndH} from './bandh';
+import {Evga} from './evga';
+import {NewEgg} from './newegg';
+import {Amazon} from './amazon';
+import {MicroCenter} from './microcenter';
+import {Config} from '../../config';
+import {Nvidia} from "./nvidia";
+
+const masterList = new Map([
+	['amazon', Amazon],
+	['bestbuy', BestBuy],
+	['bandh', BAndH],
+	['evga', Evga],
+	['microcenter', MicroCenter],
+	['newegg', NewEgg],
+	['nvidia', Nvidia]
+]);
+
+const list = new Map();
+
+const storeArray = Config.stores.split(',');
+
+for (const name of storeArray) {
+	list.set(name, masterList.get(name));
+}
+
+export const Stores = Array.from(list.values());
+
+export * from './store';

src/store/out-of-stock.ts

@@ -0,0 +1,10 @@
+/**
+ * Checks if DOM has any out-of-stock related text.
+ *
+ * @param domText Complete DOM of website.
+ * @param oosLabels Out-of-stock labels.
+ */
+export function isOutOfStock(domText: string, oosLabels: string[]) {
+	const domTextLowerCase = domText.toLowerCase();
+	return oosLabels.some(label => domTextLowerCase.includes(label));
+}