main.rb

require 'sinatra'
require 'slim'
require 'json'
require 'open-uri'
require 'github_api'

class Integer
  def to_roman
    raise RangeError, 'no roman numeral for this' if (self <= 0 || self >= 5000)
    raise NotImplementedError if self > 400
    
    n = self
    output = ''
    while n > 0
      if n >= 100 then output << 'C'; n -= 100
      elsif n >= 90 then output << 'XC'; n -= 90
      elsif n >= 50 then output << 'L'; n -= 50
      elsif n >= 40 then output << 'XL'; n -= 40
      elsif n >= 10 then output << 'X'; n -= 10
      elsif n >= 9 then output << 'IX'; n -= 9
      elsif n >= 5 then output << 'V'; n -= 5
      elsif n >= 4 then output << 'IV'; n -= 4
      else output << 'I'; n -= 1
      end
    end
    output
  end
end

get '/' do
  slim :index
end

get '/donkeykong' do
  @results = []
  (1..100).each do |i|
    @results << donkeykong(i)
  end
  slim :donkeykong
end

get '/roman' do
  slim :roman
end

get '/appnet' do
  appnet_global_feed = 'https://alpha-api.app.net/stream/0/posts/stream/global'
  begin
    result = JSON.parse(open(appnet_global_feed, ssl_verify_mode: 0).read)
  rescue
    @error = 'Error retrieving global feed.'
  end
  
  unless result.nil?
    @posts = []
    result['data'].each do |post|
      @posts << {username: post['user']['username'], text: post['text']}
    end
  end
  
  slim :appnet
end

get '/github' do
  date_limit = Time.now - 6 * 30 * 24 * 60 * 60 # 6 months
  
  github = Github.new basic_auth: ENV['GITHUB_BASIC_AUTH'], ssl: { verify: false }
  commits = github.repos.commits.all 'rails', 'rails', since: date_limit.iso8601, auto_pagination: true
  
  # TODO error handling, cache results
  
  commits_per_month = {}
  
  commits.each do |commit_hash|
    author = commit_hash['commit']['author']['name']
    date = Time.parse commit_hash['commit']['author']['date']
    
    # BUG why am I getting commits with older dates?
    #   maybe I'm reading the wrong timestamp field from the commit_hash?
    #   probably need to study GitHub API
    #   working around the issue by skipping 'unexpected'/unwanted results
    next if date < date_limit
    
    timestamp = date.strftime('%Y-%m')
    commits_per_month[timestamp] ||= {}
    commits_per_month[timestamp][author] ||= 0
    commits_per_month[timestamp][author] += 1
  end
  
  @months = commits_per_month.sort_by{|k| k}.reverse
  
  slim :github
end

helpers do
  def donkeykong(number)
    output = ''
    output << 'Donkey' if number % 3 == 0
    output << 'Kong' if number % 5 == 0
    output = number if output.empty?
    output
  end
end