Add issue creator app

Author: Thomas Osowski

app/ruby/app-issue-creator/Gemfile

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+source "http://rubygems.org"
+
+gem "json",        "~> 1.8"
+gem 'sinatra',     '~> 1.3.5'
+gem 'octokit'
+gem 'jwt'
+gem 'rest_client'

app/ruby/app-issue-creator/Gemfile.lock

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+GEM
+  remote: http://rubygems.org/
+  specs:
+    addressable (2.5.1)
+      public_suffix (~> 2.0, >= 2.0.2)
+    faraday (0.12.1)
+      multipart-post (>= 1.2, < 3)
+    json (1.8.6)
+    jwt (1.5.6)
+    multipart-post (2.0.0)
+    netrc (0.7.9)
+    octokit (4.7.0)
+      sawyer (~> 0.8.0, >= 0.5.3)
+    public_suffix (2.0.5)
+    rack (1.6.8)
+    rack-protection (1.5.3)
+      rack
+    rest_client (1.8.3)
+      netrc (~> 0.7.7)
+    sawyer (0.8.1)
+      addressable (>= 2.3.5, < 2.6)
+      faraday (~> 0.8, < 1.0)
+    sinatra (1.3.6)
+      rack (~> 1.4)
+      rack-protection (~> 1.3)
+      tilt (~> 1.3, >= 1.3.3)
+    tilt (1.4.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  json (~> 1.8)
+  jwt
+  octokit
+  rest_client
+  sinatra (~> 1.3.5)
+
+BUNDLED WITH
+   1.14.6

app/ruby/app-issue-creator/server.rb

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+require 'sinatra'
+require 'jwt'
+require 'rest_client'
+require 'json'
+require 'active_support/all'
+require 'octokit'
+
+
+post '/payload' do
+  github_event = request.env['HTTP_X_GITHUB_EVENT']
+  if github_event == "integration_installation"
+    #|| github_event == "installation_repositories"
+    parse_installation_payload(request.body.read)
+  else
+    puts "New event #{github_event}"
+  end
+
+end
+
+def get_jwt
+  path_to_pem = './platform-samples.pem'
+  private_pem = File.read(path_to_pem)
+  private_key = OpenSSL::PKey::RSA.new(private_pem)
+
+  payload = {
+    # issued at time
+    iat: Time.now.to_i,
+    # JWT expiration time (10 minute maximum)
+    exp: 5.minutes.from_now.to_i,
+    # Integration's GitHub identifier
+    iss: 2583
+  }
+
+  JWT.encode(payload, private_key, "RS256")
+end
+
+def get_app_repositories(token)
+  url = "https://api.github.com/installation/repositories"
+  headers = {
+    authorization: "token #{token}",
+    accept: "application/vnd.github.machine-man-preview+json"
+  }
+
+  response = RestClient.get(url,headers)
+  json_response = JSON.parse(response)
+
+  repository_list = []
+  if json_response["total_count"] > 0
+    json_response["repositories"].each do |repo|
+      repository_list.push(repo["full_name"])
+    end
+  end
+
+  repository_list
+end
+
+
+def create_issues(access_token, repositories, sender_username)
+  client = Octokit::Client.new(access_token: access_token )
+  client.default_media_type = "application/vnd.github.machine-man-preview+json"
+
+  repositories.each do |repo|
+    begin
+      client.create_issue(repo, "#{sender_username} created new app!", "Added GitHub App")
+    rescue
+      puts "no issues in this repository"
+    end
+  end
+end
+
+
+def get_app_token(access_tokens_url)
+  jwt = get_jwt
+
+  headers = {
+    authorization: "Bearer #{jwt}",
+    accept: "application/vnd.github.machine-man-preview+json"
+  }
+  response = RestClient.post(access_tokens_url,{},headers)
+
+  app_token = JSON.parse(response)
+  app_token["token"]
+end
+
+
+def parse_installation_payload(json_body)
+  webhook_data = JSON.parse(json_body)
+  if webhook_data["action"] == "created" || webhook_data["action"] == "added"
+    access_tokens_url = webhook_data["installation"]["access_tokens_url"]
+    # Get token for app
+    app_token = get_app_token(access_tokens_url)
+    
+    repository_list = []
+    if webhook_data["installation"].key?("repositories_added")
+      webhook_data["installation"]["repositories_added"].each do |repo|
+        repository_list.push(repo["full_name"])
+      end
+    else
+      # Get repositories by query
+      repository_list = get_app_repositories(app_token) 
+    end
+    
+    create_issues(app_token, repository_list, webhook_data["sender"]["login"])
+  end
+end