class IMAP_Notifier

# File lib/imap_notifier/base.rb, line 26
def self.delete_pid(pidFile)
  File.delete(pidFile) if File.exists?(pidFile)
end

# File lib/imap_notifier/base.rb, line 2
def self.kill_process
  matching_pids = Dir['/tmp/imap_notifier*.pid']
  if matching_pids.length > 1
    prompts = ["[Q] Cancel"]
    matching_pids.each_with_index do |p_file, i|
      prompts.push("[#{i}] #{p_file}")
    end
    pidIndex = ask("Select PID by number\n" + prompts.join("\n")) { |q|
      q.validate = /^[0-#{matching_pids.length-1},q,Q]{1}$/
    }
    return if pidIndex.downcase == "q"
    pidFile = Dir['/tmp/imap_notifier*.pid'][pidIndex.to_i]
  else
    pidFile = Dir['/tmp/imap_notifier*.pid'].first
  end
    pid = IO.readlines(pidFile).first.to_i
  puts "Killing PID: #{pid}"
  Process.kill("SIGINT", pid)
rescue Errno::ESRCH, Errno::ENOENT => e
  puts "#{e.message} - Exiting..."
ensure
  self.delete_pid(pidFile)
end

# File lib/imap_notifier/base.rb, line 30
def initialize(opts={})
  config opts

  if File.exists?(@custom_pid) && IO.readlines(@custom_pid).any?
    puts "#{@custom_pid} already exists -- Exiting..."
    exit @ignore_exit_code ? 0 : 1
  end

  @notifier = IMAP_Notifier::Alert.new

  pid = fork do
    $stderr.reopen(ERRFILE, 'w')
    at_exit {  self.stop }
    run
  end
  File.open(@custom_pid, 'w') { |f| f.write pid }
end

# File lib/imap_notifier/base.rb, line 89
def _imap
  imap = Net::IMAP.new(@imap_server, { :port => 993, :ssl => true } )
  imap.login(@user, @password)
  @notifier.alert("#{@user} connected!", :group => @domain)
  return imap
end

# File lib/imap_notifier/base.rb, line 62
def alert_folder(f, ids)
  imap.examine(f)
  unseen    = imap.search(["UNSEEN"])
  unalerted = unseen - ids

  if unalerted.length > @max_mail
    @notifier.alert("#{f}: #{unalerted.length} new mails", :group => f)
  else
    unalerted.each do |msg_id|
      msg = imap.fetch(msg_id, "ENVELOPE")[0].attr["ENVELOPE"]
      next if ids.include?(msg.message_id)
      @notifier.alert("#{f} #{msg.subject}", :title => "Mail from #{msg.from[0].mailbox}@#{msg.from[0].host}", :group => msg_id)
    end
  end
  @folders[f] = unseen
end

# File lib/imap_notifier/config.rb, line 2
def config(opts={})
  read_conf opts
  @imap_server      = opts[:server] || IMAP_SERVER
  @domain           = opts[:domain] || @imap_server.split('.').pop(2).join('.')
  @user             = "#{opts[:user]}@#{@domain}"
  $key_name         = opts[:key_name] || false
  $key_account      = opts[:key_account] || false
  $pass             = opts[:pass] || false
  $one_path         = opts[:one_path] || false
  $onepass          = opts[:onepass] || false
  @password         = opts[:password] || get_password
  @folders          = mbox_conf opts[:folders] || ['INBOX']
  @debug            = opts[:debug] || false
  @max_mail         = opts[:max]   || MAX_MAIL
  @ignore_exit_code = opts[:ignore_exit_code].to_s == 'true'
  @custom_pid       = opts[:pid] || PIDFILE
end

# File lib/imap_notifier/base.rb, line 101
def handle_exception(err)
  @notifier.alert(err.message, :title => err.class, :open => "file://#{ERRFILE}")
  warn("#{Time.now} - #{@user}")
  warn("#{err.class}: #{err.message}")
  err.backtrace.map{ |e| warn e }
end

# File lib/imap_notifier/base.rb, line 79
def imap
  @imap ||= _imap
end

# File lib/imap_notifier/base.rb, line 48
def run
  begin
    @folders.each do |f, ids|
      alert_folder(f, ids)
    end
    sleep SLEEP
  rescue EOFError
    @imap = nil
  rescue Exception => err
    say_goodbye(err.class.to_s) || handle_exception(err)
    stop
  end while true
end

# File lib/imap_notifier/base.rb, line 96
def say_goodbye(klass)
  return if !(klass.eql? "Interrupt")
  @notifier.alert("Goodbye!", :group => @domain)
end

# File lib/imap_notifier/base.rb, line 83
def stop
  IMAP_Notifier::Alert.remove
  self.class.delete_pid
  exit
end

# File lib/imap_notifier/config.rb, line 60
def ensure_perms file
  m =  sprintf("%o", File.stat(file).mode).split('').last(3).join().to_i
  return if m.eql? 600
  warn "#{file} permissions should be set to 600 #{m}"
  exit 1
end

# File lib/imap_notifier/config.rb, line 26
def get_password
  if $key_name && $key_account
    key = %x{security find-internet-password -w -a #{$key_account} -s #{$key_name}}
  elsif $pass
    key = %x{pass #{$pass}}
  elsif $onepass
    if $one_path
      key = %x{1pass --path "#{$one_path}" #{$onepass}} 
    else
      key = %x{1pass #{$onepass}} 
    end
  end
  if key.nil? || key.empty?
    key = pass_prompt
  end
  return key.chomp
end

# File lib/imap_notifier/config.rb, line 21
def mbox_conf ary
  Hash[ary.map{ |f| [f,Array.new] }]
end

# File lib/imap_notifier/config.rb, line 45
def pass_prompt(prompt="Enter Password: ")
  ask(prompt) { |q| q.echo = false }
end

# File lib/imap_notifier/config.rb, line 49
def read_conf opts
  config = opts[:config] || "~/.imap_notifier"
  file = File.expand_path(config)
  return if ! File.exists? file
  ensure_perms file
  YAML.load(File.open(file)).each do |k,v|
    opts[k.to_sym] ||= v
  end
  opts[:user] ||= ENV['USER']
end