Update inspector to use chrome-har-capturer. Closes #42

This uses headless Chrome instead of Electron-HAR

HTTPArchive.coffee

@@ -20,7 +20,7 @@ zlib = require 'zlib'
 gzipAsync = Promise.promisify zlib.gzip
 gunzipAsync = Promise.promisify zlib.gunzip
 
-generateArchiveFromURL = Promise.promisify (require 'electron-har')
+chromeHarCapturer = require 'chrome-har-capturer'
 
 fileSize = require 'file-size'
 jsonStableStringify = require 'json-stable-stringify'
@@ -64,13 +64,34 @@ class HTTPArchive
 		# If the URL does not have a protocol, default to HTTP.
 		if url.indexOf('http') != 0 then url = "http://#{url}"
 
-		return (generateArchiveFromURL url, {'user-agent': 'IPHONE_6', 'debug': debug}, timeout).catch (error) ->
-			if error == 3
-				throw new Error "Protocol missing/incorrect in URL (#{url})"
-			else if error.toString() is 'SyntaxError: Unexpected end of input'
-				throw new Error "Timed out"
-			else
-				throw new Error "Could not generate HAR file for #{url}. Error: #{error}."
+		#
+		# Chrome HAR Capturer uses events. Our design expects a promise here. So wrap it in a promise.
+		#
+		# iPhone 6/6s/7/8 screen size in pts (same as DIPs are per https://developers.google.com/speed/docs/insights/ConfigureViewport) from https://www.paintcodeapp.com/news/ultimate-guide-to-iphone-resolutions
+
+		# Set a post hook to wait 10 seconds after page load as a grace period to allow other scripts/trackers to load.
+		allowGraceTime = (url, client) ->
+		    return new Promise (fulfill, reject) ->
+		        setTimeout fulfill, 10000
+
+		return new Promise (resolve, reject) ->
+			(chromeHarCapturer.run [url], {
+				'agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Version/10.0 Mobile/14D27 Safari/602.1',
+				'timeout': 60000,			# Timeout attempts after a minute
+				'width': 375,				# iPhone 6/6s/7/8 resolution
+				'height': 667,				# …
+				'postHook': allowGraceTime 	# Allow grace period after document load event
+			})
+			.on 'fail', reject
+			.on 'har', (har) -> resolve har
+
+		# return (generateArchiveFromURL url, {'user-agent': 'IPHONE_6', 'debug': debug}, timeout).catch (error) ->
+		# 	if error == 3
+		# 		throw new Error "Protocol missing/incorrect in URL (#{url})"
+		# 	else if error.toString() is 'SyntaxError: Unexpected end of input'
+		# 		throw new Error "Timed out"
+		# 	else
+		# 		throw new Error "Could not generate HAR file for #{url}. Error: #{error}."
 
 
 	# Promises to load an HTTP Archive file from the passed file path.

package.json

@@ -3,6 +3,9 @@
   "version": "1.0.0",
   "description": "Investigator tools for Better.",
   "main": "index.coffee",
+  "engines": {
+    "node": ">=7.6.0"
+  },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
@@ -13,7 +16,7 @@
     "buffer-equal": "^1.0.0",
     "cli-spinner": "^0.2.5",
     "easy-table": "^1.0.0",
-    "electron-har": "git+https://source.ind.ie/forks/electron-har.git",
+    "chrome-har-capturer": "git+https://source.ind.ie/forks/chrome-har-capturer.git",
     "file-size": "^1.0.0",
     "fs-extra": "^0.26.7",
     "json-stable-stringify": "^1.0.1",