refactor around promises so it can be used in other apps

README.md

@@ -1,12 +1,13 @@
 # Crawler
 
-Network scanning tool for Ark (v2)
+Network scanning tool for ARK.
 
+This currently works for ARK v1 and will be updated to work with V2's API structure shortly. 
 
 ## Installation
 
 `npm install`
 
 ## Usage
 
-`node app.js http://<ip>:<port>`
+`npm start http://<ip>:<port>`

app.js

@@ -1,12 +1,42 @@
 const Crawler = require('./src/crawler')
+const { URL } = require('url')
+const { forEach, keys } = require('lodash')
 
 const crawler = new Crawler()
 const args = process.argv.slice(2)
 
+const report = (crawler) => {
+  let blockStats = {}
+
+  forEach(crawler.heights, (item) => {
+    if (blockStats[item.height]) {
+      blockStats[item.height].count += 1
+      blockStats[item.height].ids[item.id] += 1
+    } else {
+      blockStats[item.height] = {}
+      blockStats[item.height].count = 1
+      blockStats[item.height].ids = {}
+      blockStats[item.height].ids[item.id] = 1
+    }
+  })
+
+  console.log(`===========================================`)
+  console.log(`Total nodes visited: ${keys(crawler.nodes).length}`)
+  console.log(`Total nodes online: ${crawler.heights.length}`)
+  console.log(`------------------------------------------`)
+  console.log(`Block stats:`)
+  console.log(blockStats)
+  console.log(`------------------------------------------`)
+  console.log(`Finished scanning in ${new Date() - crawler.startTime}ms`)
+  process.exit(0)
+}
+
 let node = {ip: '167.99.243.111', port: 4003}
+
 if (args.length === 1) {
     const url = new URL(args[0])
     node.ip = url.hostname
     node.port = url.port
 }
-crawler.run(node)
+
+crawler.run(node).then(report)

package.json

@@ -1,6 +1,26 @@
 {
+  "name": "crawler",
+  "version": "0.0.1",
+  "description": "loops through the ARK network to get the height of connected peers",
+  "main": "app.js",
+  "scripts": {
+    "start": "node app.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/roks0n/crawler.git"
+  },
+  "engines": {
+    "node": "^8.11.2"
+  },
+  "keywords": [],
+  "author": "A(rk)-Team",
+  "license": "Apache-2.0",
+  "homepage": "https://github.com/roks0n/crawler#readme",
+  "devDependencies": {},
   "dependencies": {
     "axios": "^0.18.0",
     "delay": "^4.0.1",
+    "lodash": "^4.17.11"
   }
 }