app.rb

# vim: set noet sts=4 sw=4 ts=4 ft=ruby :

require 'json'
require 'socket'

require 'rubygems'
require 'pit'
require 'twilio-ruby'
require 'sinatra'
require 'sinatra/reloader'

require 'mongoid'
require 'mongoid_geospatial'
Mongoid.load!('mongoid.yml', :development)
require_relative './models/account'

config = Pit.get('twilio',
				 :require => {
	'sid'   => 'twilio sid',
	'token' => 'twilio auth token',
	'from' => 'twilio from phone number',
})

$twilio = Twilio::REST::Client.new(config['sid'], config['token'])
$from_phone_number = config['from']

helpers do
	include Rack::Utils; alias_method :h, :escape_html
end

configure do
	set :public_folder, File.dirname(__FILE__) + '/static'
end

post '/voices/publish.xml' do
	content_type 'text/xml'
	erb :publish, :locals => {
		:message => params['message']
	}
end

post '/voices/receipt.xml' do
	content_type 'text/xml'
	erb :receipt, :locals => {
        :hostname => Socket.gethostname
    }
end

post '/voices/location.xml' do
	content_type 'text/xml'
    p params
    d = params['Digits'].to_i
    d = 5 if 5 < d
    erb :location, :locals => {
        :hostname => Socket.gethostname,
        :division => d
    }
end

post '/voices/:division/receipt_finish.xml' do
	content_type 'text/xml'
    p params
    #city = params['Digits'].to_i
    division = params['division'].to_i

    loc = {}
    case division
    when 1
        # Khulna
        loc[:lat] = 22.816694
        loc[:lon] = 89.549561
    when 2
        # Sylhet
        loc[:lat] = 24.796708
        loc[:lon] = 91.757813
    when 3
        # Dhaka
        loc[:lat] = 23.70238
        loc[:lon] = 90.401001
    when 4
        # Chittagong
        loc[:lat] = 22.324671
        loc[:lon] = 91.829224
    else
        # Other
        loc[:lat] = 24.85155
        loc[:lon] = 89.351807
    end
    Account.new({
        :name => "N/A",
        :phone_number => params['Caller'],
        :loc => loc
    }).save

    erb :receipt_finish, :locals => {
        :hostname => Socket.gethostname
    }
end

post '/publish' do
	headers 'Access-Control-Allow-Origin' => '*'
	request.body.rewind
	params = JSON.parse request.body.read
	center = [params['lat'], params['lon']]
	distance = params['radius']
	phone_numbers = []
	Account.each_near(center, distance) do |a|
		to = a['phone_number']
		url = 'http://ewsb.no32.tk/voices/publish.xml' +
			"?message=#{CGI.escape params['message']}"
		unless phone_numbers.include? to
			a.call($twilio, $from_phone_number, to, url)
		end
		phone_numbers << to
	end
	'It works!'
end