require 'sinatra'
set :port, 8080

get '/packages' do
    packages = parse_packages
    @package_list = packages.keys
    @package_list.sort!
    erb(:packages)
end

get '/packages/:name' do |n|
  "a specific package with name #{n}"
end

def parse_packages
    package_collection = {}
    current_package = {}
    current_key = nil
    current_value = nil

    File.open('/var/lib/dpkg/status', "r").each do |line|
        line.match(/^(?<key>[A-Za-z-]+): (?<value>.+)/) do |m|
            current_package[current_key] = current_value
            current_key = m[:key]
            current_value = m[:value]
        end

        line.match(/^(?<value> .+)/) do |m|
            current_value += m[:value]
        end

        line.match(/^\n/) do |m|
            package_collection[current_package['Package']] = current_package
        end
    end


 data = package_collection
 return data
end