simple api with Sinatra

app.rb

#!/usr/bin/env/ ruby

require_relative('fp')

require 'sinatra'
require 'json'

t = FlightTracker.new

get '/' do
  text = "<h1>*** Welcome to the Flight Tracker API ***</h1>"
  text << "<p>To input a flight: localhost:4567/entry?flight=KS4567&altitude=10000</p>"
  text << "<p>To get info on all flights: localhost:4567/tracking_info</p>"
  erb text
end

get '/entry' do
  plane = { :name => params[:flight], :altitude => params[:altitude], :toe => Time.now }
  t.make_record_live(plane)
  erb "Flight #{plane[:flight]} has been added with a TOE of #{plane[:toe]}."
end

get '/tracking_info' do
	results = t.tracking_info
	content_type :json
	erb results.to_json
end 

not_found do
  erb "Page not found."
end