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

      entries = [
        {
          host: "spend.cloud.local",
          comment: "The spend cloud ingress url"
        },
        {
          host: "mail.spend.cloud.local",
          comment: "The spend cloud mail url"
        },
        {
          host: "config.spend.cloud.local",
          comment: "The spend cloud config url"
        },
        {
          host: "spend-cloud.spend.cloud.local",
          comment: "The spend cloud web app url"
        },
        {
          host: "docs.spend.cloud.local",
          comment: "The spend cloud documentation url"
        }
      ]

      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|
        line_ending = hosts_path == "/mnt/c/Windows/System32/drivers/etc/hosts" ? "\r\n" : "\n"

        lines = File.readlines hosts_path

        # select the lines that do not include any entry
        lines = lines.select { |line| ! entries.any? { |entry| line.include? entry[:host] } }

        # add entries
        entries.each do |entry|
          lines << "#{ingressAddress} #{entry[:host]} # #{entry[:comment]}#{line_ending}"
        end

        File.write hosts_path, lines.join

        puts "Patched #{hosts_path} with #{ingressAddress}".green
      end

    end

    implements CommandInterface

  end

end