require 'hosts'
require 'sct/command_interface'

module Sct
  class HostfileCommand

    IS_PUBLIC_COMMAND = true
    SYNTAX = 'sct hostfile'
    SUMMARY = 'adds the ingress url to the users hostfile'
    DESCRIPTION = ""
    EXAMPLE = "sct hostfile"
    EXAMPLE_DESCRIPTION = ""

    OPTIONS = []

    def self.options
    end

    def execute(args, options)
      return puts "SCT has not been initialized. Run 'sct init' first.".red unless Sct::Config.exists

      return puts "This command needs to be run with sudo.".red unless Sct::Helpers.isSudo

      return unless Sct::Helpers.ingressAddress

      ingressAddress = Sct::Helpers.ingressAddress

      if options.path
        hosts_paths = [options.path]
      else
        hosts_paths = ["/etc/hosts"]

        if Sct::Helpers.operatingSystem == Sct::Helpers::WINDOWS
          hosts_paths << "/mnt/c/Windows/System32/drivers/etc/hosts"
        end
      end

      hosts_paths.each do |hosts_path|
        hosts = Hosts::File.read(hosts_path)

        if ([ingressAddress].any? { |ip| hosts.to_s =~ /#{ip}/ })
          puts "Skipped patching #{hosts_path} (already up to date)".green
        else
          validate_if_exist(hosts)
          add_entry(ingressAddress, hosts)
          hosts.write
          puts "Patched #{hosts_path} with #{ingressAddress}".green
        end
      end
    end

    def add_entry(url, hosts)
      spend = Hosts::Entry.new(
          url,
          'spend.cloud.local',
          :comment => 'The spend cloud ingress url'
      )

      mail = Hosts::Entry.new(
          url,
          'mail.spend.cloud.local',
          :comment => 'The spend cloud mail url'
      )

      config = Hosts::Entry.new(
          url,
          'config.spend.cloud.local',
          :comment => 'The spend cloud config url'
      )

      spend_cloud = Hosts::Entry.new(
          url,
          'spend-cloud.spend.cloud.local',
          :comment => 'The spend cloud web app url'
      )

      docs = Hosts::Entry.new(
          url,
          'docs.spend.cloud.local',
          :comment => 'The spend cloud documentation url'
      )

      hosts.elements << spend
      hosts.elements << mail
      hosts.elements << config
      hosts.elements << spend_cloud
      hosts.elements << docs

    end

    def validate_if_exist(array)
      rejectArray = Array.new

      array.to_s.each_line.with_index do |line, index|

        if (line =~ /(?:spend\.cloud\.local)./)
          rejectArray.push(index)
        end

      end

      array.elements.delete_if.each_with_index { |value, index| rejectArray.include? index }

    end

    implements CommandInterface

  end

end