scrape.js: Search org for user

This searches the user's organization for their display name. If
the user is found, their username will be linked.

Closes coala#8

.coafile

@@ -18,6 +18,7 @@ bears = LineLengthBear
 
 [all.links]
 bears = InvalidLinkBear
+link_ignore_regex = (github\.com)
 
 [css]
 files = static/css/*.css

lib/scrape.js

@@ -4,6 +4,7 @@ const fs = require('fs')
 const json2yaml = require('json2yaml')
 
 const GH_USER_BASE = 'https://github.com/users'
+const GH_ORG_BASE = 'https://github.com/orgs'
 const GH_API_BASE = 'https://api.github.com'
 const GCI_API_BASE = 'https://codein.withgoogle.com/api'
 
@@ -19,12 +20,23 @@ const CHAT_IMAGES = {
   OTHER: 'static/images/chat.png',
 }
 
-const GITHUB_OPTIONS = {
+const GH_API_OPTIONS = {
   headers: process.env.GITHUB_TOKEN
     ? { Authorization: `token ${process.env.GITHUB_TOKEN}` }
     : {},
 }
 
+const GH_WEB_OPTIONS = {
+  headers: {
+    Accept: 'text/html',
+    'Accept-Encoding': 'utf8',
+    'Accept-Language': 'en-US,en;q=0.9',
+    'Upgrade-Insecure-Requests': '1',
+    'User-Agent': 'Mozilla/5.0',
+  },
+  compress: false,
+}
+
 async function fetchProgram() {
   const res = await fetch(`${GCI_API_BASE}/program/2017/`)
   return await res.json()
@@ -45,7 +57,7 @@ async function fetchLeaders(id) {
 async function searchGitHubOrgs(query) {
   const res = await fetch(
     `${GH_API_BASE}/search/users?q=${query}%20type:org`,
-    GITHUB_OPTIONS
+    GH_API_OPTIONS
   )
   const { items } = await res.json()
   return items || []
@@ -97,7 +109,7 @@ function findMatches(input, pattern) {
 }
 
 async function getGitHubUser(user) {
-  const res = await fetch(`${GH_API_BASE}/users/${user}`, GITHUB_OPTIONS)
+  const res = await fetch(`${GH_API_BASE}/users/${user}`, GH_API_OPTIONS)
   let response = await res.json()
   if (response && response.message) {
     response = undefined
@@ -155,14 +167,17 @@ async function findOrganization({
 async function findGitHubUser({ display_name }, org) {
   if (!org) return
 
-  display_name = display_name.replace(/ /g, '')
+  const shortName = display_name.replace(/ /g, '')
+
+  const username = await findGitHubUserInOrg(display_name, org)
+  if (username) return username
 
   const displayNamePattern = /^[a-zA-Z0-9-]{1,39}$/
 
-  const displayNameMatches = displayNamePattern.exec(display_name)
+  const displayNameMatches = displayNamePattern.exec(shortName)
   if (!displayNameMatches) return
 
-  const user = await getGitHubUser(display_name)
+  const user = await getGitHubUser(shortName)
   if (!user) return
 
   const login = user.login
@@ -183,6 +198,19 @@ async function findGitHubUser({ display_name }, org) {
   }
 }
 
+async function findGitHubUserInOrg(user, org) {
+  const pattern = new RegExp(
+    '<a class="css-truncate-target f4" href="/([a-zA-Z0-9-]{1,39})">'
+  )
+  const res = await fetch(
+    `${GH_ORG_BASE}/${org}/people?query=${user}`,
+    GH_WEB_OPTIONS
+  )
+  const body = await res.text()
+  const match = pattern.exec(body)
+  return match ? match[1] : null
+}
+
 async function fetchOrgsWithData() {
   const orgs = await fetchOrgs()
   const fetchingLeaders = orgs.map(org => fetchLeaders(org.id))