#!/usr/bin/env ruby

require 'optparse'
require 'time'
require 'iron_worker_ng'

if $*.size == 0 || (not ['codes.create', 'tasks.create', 'schedules.create', 'tasks.log'].include?($*[0]))
  puts 'usage: iron_worker COMMAND [OPTIONS]'
  puts '    COMMAND: codes.create, tasks.create, schedules.create, tasks.log'
  puts '    run iron_worker COMMAND --help to get more information about each command'
  exit 1
end

command = $*[0]
$*.shift

client = IronWorkerNG::Client.new

if command == 'codes.create'
  runtimes = IronWorkerNG::Code::Base.registered_types
  runtimes_help = runtimes[0][:name] + ' (default)' + (runtimes.size == 1 ? '' : ', ') + runtimes.map { |r| r[:name] }[1 .. -1].join(', ')

  features = []

  name = nil
  runtime = nil
  execute_features = []

  opts = OptionParser.new do |opts|
    opts.banner = "usage: iron_worker #{command} [OPTIONS]"

    opts.on('-r', '--runtime RUNTIME', runtimes.map { |r| r[:name] }, "#{runtimes_help}") do |v|
      runtime = v
    end

    opts.on('-n', '--name NAME', 'code name') do |v|
      name = v
    end

    IronWorkerNG::Code::Base.registered_features.each do |f|
      prefix = ''

      if f[:for_klass] != IronWorkerNG::Code::Base
        prefix = runtimes.find { |r| r[:klass] == f[:for_klass] }[:name] + '-'
      end

      opts.on("--#{prefix}#{f[:name].gsub('_', '-')} #{f[:args]}", Array) do |v|
        execute_features << {:name => f[:name], :args => v}
      end
    end
  end

  begin
    opts.parse!
  rescue OptionParser::ParseError
    puts $!.to_s
    exit 1
  end

  runtime = runtimes[0][:name] if runtime.nil?

  code = runtimes.find { |r| r[:name] == runtime }[:klass].new(:name => name)

  execute_features.each do |f|
    code.send(f[:name], *f[:args])
  end

  client.codes.create(code)
elsif command == 'tasks.create' || command == 'schedules.create'
  name = nil
  payload = nil

  priority = nil
  timeout = nil
  delay = nil

  start_at = nil
  end_at = nil
  run_times = nil
  run_every = nil

  print_id = false

  opts = OptionParser.new do |opts|
    opts.banner = "usage: iron_worker #{command} [OPTIONS]"

    opts.on('-n', '--name NAME', 'code name') do |v|
      name = v 
    end

    opts.on('-p', '--payload PAYLOAD', String, 'payload to pass') do |v|
      payload = v
    end

    opts.on('--priority PRIORITY', Integer, '0 (default), 1, 2') do |v|
      priority = v
    end

    opts.on('--timeout TIMEOUT', Integer, 'maximum run time in seconds from 0 to 3600 (default)') do |v|
      timeout = v
    end

    opts.on('--delay DELAY', Integer, 'delay before start in seconds') do |v|
      delay = v
    end

    if command == 'schedules.create'
      opts.on('--start-at TIME', 'start task at specified time') do |v|
        start_at = Time.parse(v)
      end

      opts.on('--end-at TIME', 'stop running task at specified time') do |v|
        end_at = Time.parse(v)
      end

      opts.on('--run-times RUN_TIMES', Integer, 'run task no more times than specified') do |v|
        run_times = v
      end

      opts.on('--run-every RUN_EVERY', Integer, 'run task every RUN_EVERY seconds') do |v|
        run_every = v
      end
    end

    opts.on('--print-id', 'prints result id') do |v|
      print_id = true
    end
  end

  begin
    opts.parse!
  rescue OptionParser::ParseError
    puts $!.to_s
    exit 1
  end

  if name.nil?
    puts opts
    exit 1
  end

  options = {}

  options[:priority] = priority unless priority.nil?
  options[:timeout] = timeout unless timeout.nil?
  options[:delay] = delay unless delay.nil?

  if command == 'schedules.create'
    options[:start_at] = start_at unless start_at.nil?
    options[:end_at] = end_at unless end_at.nil?
    options[:run_times] = run_times unless run_times.nil?
    options[:run_every] = run_every unless run_every.nil?
  end

  id = nil

  if command == 'tasks.create'
    id = client.tasks.create(name, payload, options).id
  else
    id = client.schedules.create(name, payload, options).id
  end

  print id if print_id
elsif command == 'tasks.log'
  task_id = nil
  live = false

  opts = OptionParser.new do |opts|
    opts.banner = "usage: iron_worker #{command} [OPTIONS]"

    opts.on('-t --task-id ID', 'task id') do |v|
      task_id = v 
    end

    opts.on('--live', 'live log session') do |v|
      live = true
    end
  end

  begin
    opts.parse!
  rescue OptionParser::ParseError
    puts $!.to_s
    exit 1
  end

  if task_id.nil?
    puts opts
    exit 1
  end

  log = ''

  if live
    begin
      log = client.tasks.log(task_id)
    rescue IronWorkerNG::APIClientError
    end
  else
    log = client.tasks.log(task_id)
  end

  print log

  if live
    client.tasks.wait_for(task_id) do |task|
      if task.status == 'running'
        begin
          next_log = client.tasks.log(task_id)
          print next_log[log.length .. - 1]
          log = next_log
        rescue IronWorkerNG::APIClientError
        end
      end
    end

    begin
      next_log = client.tasks.log(task_id)
      print next_log[log.length .. - 1]
    rescue IronWorkerNG::APIClientError
    end
  end
end