Initial commit

.gitignore

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+node_modules

getPrice.js

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+module.exports = async function(page, url) {
+  await page.goto(url);
+  const element = await page.waitForSelector('b.price')
+  const value = await element.evaluate(el => el.textContent);
+  return Number(value)
+}

index.js

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+const puppeteer = require('puppeteer');
+const getPrice = require('./getPrice');
+const items = require("./items");
+
+const marketUrl = 'https://warframe.market/items/';
+
+(async () => {
+  const browser = await puppeteer.launch({ headless: false });
+  const page = await browser.newPage();
+
+  for (item of items) {
+    let partsPrice = 0
+    for (part of item.parts) {
+      partsPrice += await getPrice(page, marketUrl + part.url);
+    }
+
+    const setPrice = await getPrice(page, marketUrl + item.url)
+    if (partsPrice < setPrice) {
+      console.log(item.name, partsPrice, setPrice)
+    }
+  }
+
+  await browser.close();
+})();

items/Item.js

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+module.exports = class Item {
+  constructor(name) {
+    this.name = name
+    this.url = `${this.name}_prime_set`
+    this.parts = []
+    this.addPart('blueprint')
+  }
+
+  addPart(part) {
+    this.parts.push({ part, url: `${this.name}_prime_${part}` })
+  }
+}

items/Warframe.js

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+const Item = require("./Item");
+
+module.exports = class Warframe extends Item {
+  constructor(name) {
+    super(name)
+
+    this.addPart('systems')
+    this.addPart('neuroptics')
+    this.addPart('chassis')
+  }
+}

items/index.js

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+const Warframe = require("./Warframe");
+
+module.exports = [
+  new Warframe('ash'),
+  new Warframe('atlas'),
+]

package.json

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+{
+  "name": "warframe-market-bot",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Anatoly Kopyl",
+  "license": "ISC",
+  "dependencies": {
+    "puppeteer": "^13.3.2"
+  }
+}