Merge pull request 'use-api' (#1) from use-api into master

Reviewed-on: anatolykopyl/warframe-market-bot#1

api.js

@@ -0,0 +1,31 @@
+const axios = require('axios')
+const { RateLimiter } = require('limiter')
+
+class Api {
+  constructor () {
+    this.baseUrl = 'https://api.warframe.market/v1/'
+    this.delay = process.env.API_DELAY ?? 3000
+    this.limiter = new RateLimiter({ tokensPerInterval: 1, interval: Number(this.delay) })
+  }
+
+  async _get (url) {
+    await this.limiter.removeTokens(1)
+    return axios.get(url)
+  }
+
+  async getOrders (url) {
+    const response = await this._get(this.baseUrl + 'items/' + url + '/orders')
+    return response.data.payload.orders.filter(function (order) {
+      return order.order_type === 'sell' && order.user.status !== 'offline'
+    })
+  }
+
+  async getSortedOrders (url) {
+    const orders = await this.getOrders(url)
+    return orders.sort(function (a, b) {
+      return a.platinum - b.platinum
+    })
+  }
+}
+
+module.exports = new Api()

index.js

@@ -1,38 +1,21 @@
 require('dotenv').config()
-const puppeteer = require('puppeteer')
 const items = require('./items')
-const output = require('./output')
-
-async function initPuppeteer (page) {
-  await page.setDefaultNavigationTimeout(0)
-  await page.setRequestInterception(true)
-  page.on('request', (request) => {
-    if (['image'].includes(request.resourceType())) request.abort()
-    else request.continue()
-  })
-}
+const output = require('./output');
 
 (async () => {
-  const browser = await puppeteer.launch({
-    executablePath: process.env.EXECUTABLE
-  })
-  const page = await browser.newPage()
-  await initPuppeteer(page)
-
   for (const item of items) {
     console.log(`Looking at ${item.name}`)
 
     let partsPrice = 0
     for (const part of item.parts) {
-      partsPrice += await part.getPrice(page)
+      partsPrice += await part.getPrice()
     }
 
-    const setPrice = await item.set.getPrice(page)
+    const setPrice = await item.set.getPrice()
     if (partsPrice < setPrice) {
       output.addItem(item.name, partsPrice, setPrice)
     }
   }
 
-  await browser.close()
   output.submit()
 })()

items/Part.js

@@ -1,3 +1,5 @@
+const Api = require('../api')
+
 module.exports = class Part {
   constructor (set, part, amount) {
     this.part = part
@@ -5,12 +7,8 @@ module.exports = class Part {
     this.amount = amount ?? 1
   }
 
-  async getPrice (page) {
-    const marketUrl = 'https://warframe.market/items/'
-
-    await page.goto(marketUrl + this.url)
-    const element = await page.waitForSelector('b.price')
-    const value = await element.evaluate(el => el.textContent)
-    return Number(value) * this.amount
+  async getPrice () {
+    const orders = await Api.getSortedOrders(this.url)
+    return Number(orders[0].platinum) * this.amount
   }
 }

package.json

@@ -9,9 +9,10 @@
   "author": "Anatoly Kopyl",
   "license": "ISC",
   "dependencies": {
+    "axios": "^0.26.0",
     "dotenv": "^16.0.0",
     "handlebars": "^4.7.7",
-    "puppeteer": "^13.3.2"
+    "limiter": "^2.1.0"
   },
   "devDependencies": {
     "eslint-config-standard": "^16.0.3"