fourrific.rb

begin
  # Try to require the preresolved locked set of gems.
  require File.expand_path('../.bundle/environment', __FILE__)
rescue LoadError
  # Fall back on doing an unlocked resolve at runtime.
  require "rubygems"
  require "bundler"
  Bundler.setup
end

require 'sinatra'
Bundler.require
require File.dirname(__FILE__) + '/base'

enable :sessions

get '/' do
  @ip = @env['REMOTE_ADDR']
  
  if params[:oauth_token]
    h = Fourrific::Authorize.new
    t = h.access_token(params[:oauth_token],session[:request_secret], params[:oauth_verifier])
    session[:token] = t[:token]
    session[:secret] = t[:secret]
    
    #if you reload the page with the oauth param, you 500, better to redirect and kill the possibility
    redirect '/' 
    
  elsif session[:token].nil?
    redirect '/login' 
  end
    
  @g = Fourrific::IPGeocode.new(@ip)
  @city = @g.you_are_in

  begin
    c = Fourrific::Checkins.new(session[:token],session[:secret])
    @c = c.friends(@g)
    if c.error && c.error.length > 0
      raise c.error
    end
  end
  
  if c.first_is_far?
    @first_is_far = true
  end
  
  erb :index

end

get '/login' do
  
  h = Fourrific::Authorize.new
  t = h.get_tokens
  
  session[:request_token] = t[:request_token]
  session[:request_secret] = t[:secret]
  @url = t[:url]
  
  redirect "#{@url}"
  erb :login
end

error do
  @msg = env['sinatra.error']
  
  erb :unauthorized
end

error 404 do
  @msg = "404. That page doesn't exist. <a href='/'>Go home</a>."
  
  erb :unauthorized
end

error OAuth::Unauthorized do
  @msg = "For some reason, I can't log you into foursquare. Try clearing your cache and cookies, and <a href='/'>starting over</a>."
  
  erb :unauthorized
end