#!/usr/bin/env ruby

require "bundler/setup"
require "EndlessWaffleCLI"
require 'json'
require 'getoptlong'
require 'console_table'
require 'colorize'

query = {}
updateCache = false
showList = false
showJSON = false

if ENV['EndlessWaffleURL'].nil?
  puts "EndlessWaffleCLI requires the 'EndlessWaffleURL' environment variable to be set."
  exit 1
else
  EndlessWaffleCLI.setServer ENV['EndlessWaffleURL']
end

if ENV['EndlessWaffleToken'].nil?
  puts "EndlessWaffleCLI requires the 'EndlessWaffleToken' environment variable to be set."
  exit 1
else
  EndlessWaffleCLI.setToken ENV['EndlessWaffleToken']
end

def colorizeState(state)
  if state == "running"
    state.colorize(:green)
  else
    state.colorize(:red)
  end
end

def showHelp
  puts
  puts "Endless Waffle Enumerate"
	puts "Usage example: #{$0} -e dev1 -r frontend"
	puts
	puts "Options:"
	puts "-m or --monochrome".ljust(30)          +"-> Show results in monochrome"
	puts "-e or --environment".ljust(30)         +"-> Specifiy environment"
	puts "-r or --role".ljust(30)                +"-> Specifiy role"
  puts "-l or --list".ljust(30)                +"-> List Public DNS names only, hint: for scripts"
  puts "-j or --json".ljust(30)                +"-> Raw JSON output"
  puts "-i or --instanceId".ljust(30)          +"-> Find by instanceId"
  puts "-n or --name".ljust(30)                +"-> Find by Instance Name"
	puts "-c or --cache ".ljust(30)              +"-> Update local Cache database with current AWS data"
  puts "-h or --help".ljust(30)                +"-> Show this help message."
	puts
end

parser = GetoptLong.new
parser.set_options(["-m", "--monochrome", GetoptLong::NO_ARGUMENT],
                   ["-e", "--environment", GetoptLong::NO_ARGUMENT],
                   ["-r", "--role", GetoptLong::NO_ARGUMENT],
                   ["-l", "--list", GetoptLong::NO_ARGUMENT],
                   ["-j", "--json", GetoptLong::NO_ARGUMENT],
                   ["-i", "--instanceId", GetoptLong::NO_ARGUMENT],
                   ["-n", "--name", GetoptLong::NO_ARGUMENT],
                   ["-c", "--cache", GetoptLong::NO_ARGUMENT],
                   ["-h", "--help", GetoptLong::NO_ARGUMENT]
                   )

begin
	begin
		opt,arg = parser.get_option
		break if not opt
		case opt
			when "-h" || "--help"
				showHelp
				exit
			when "-m" || "--monochrome"
        String.disable_colorization = true
			when "-e" || "--environment"
				query.store(:environment,  ARGV[0])
      when "-r" || "--role"
        query.store(:role,  ARGV[0])
      when "-l" || "--list"
        showList = true
      when "-j" || "--json"
        showJSON = true
      when "-i" || "--instanceId"
        query.store(:instanceId,  ARGV[0])
      when "-n" || "--name"
        query.store(:name,  ARGV[0])
			when "-c" || "--cache"
				updateCache = true
			end
		rescue => err
			puts "#{err.class()}: #{err.message}"
			exit 1
	end
end while 1


def showTable(result)
  table_config = [
     {:key=>:instanceId, :size=>13, :title=>"Instance Id"},
     {:key=>:name, :size=>9, :title=>"Name"},
     {:key=>:role, :size=>8, :title=>"Role"},
     {:key=>:environment, :size=>8, :title=>"Env"},
     {:key=>:instanceType, :size=>10, :title=>"Type"},
     {:key=>:availabilityZone, :size=>12, :title=>"Zone"},
     {:key=>:instanceState, :size=>12, :title=>"State"},
     {:key=>:dnsName, :size=>"*", :title=>"DNS Name"},
  ]
  ConsoleTable.define(table_config) do |table|
      result.each do |r|
        table << [
          r["instanceId"].colorize(:yellow),
          r["nodemap"]["name"],
          r["nodemap"]["role"],
          r["nodemap"]["environment"],
          r["instanceType"],
          r["placement"]["availabilityZone"],
          colorizeState(r["instanceState"]["name"]),
          r["dnsName"]]
      end
  end
end


def showJSON(result)
  puts JSON.pretty_generate(result)
end

def showList(result)
  output = []
  result.each do |i|
    output.push i["dnsName"]
  end
  puts output.join(' ')
end

if updateCache == true
  puts "Running Cache Update:"
  puts EndlessWaffleCLI.updateEc2Cache
end

result = EndlessWaffleCLI.queryEc2 query


if showList == false && showJSON == false
  showTable result
elsif showJSON == true
  showJSON result
elsif showList == true
  showList result
end