#!/usr/bin/env ruby

$stdout.sync = true

require 'optparse'

require File.expand_path(File.dirname(__FILE__) + '/../lib/redimap')


# = Parse opts

options = {}

OptionParser.new do |opts|
  opts.banner = "Usage: redimap [options]"
  
  opts.separator ""
  opts.separator "Polling:"
  
  opts.on("-e", "--[no-]eternal", "Run eternally") do |o|
    options[:eternal] = o
  end
  
  opts.on("--polling-interval [N]", "Poll every N seconds when --eternal") do |o|
    options[:polling_interval] = o
  end
  
  opts.separator ""
  opts.separator "IMAP:"
  
  opts.on("-h", "--imap-host HOST", "Connect IMAP with HOST") do |o|
    options[:imap_host] = o
  end
  
  opts.on("--imap-port [PORT]", Integer, "Connect IMAP with PORT") do |o|
    options[:imap_port] = o
  end
  
  opts.on("-u", "--imap-username USERNAME", "Connect IMAP with USERNAME") do |o|
    options[:imap_username] = o
  end
  
  opts.on("-p", "--imap-password PASSWORD", "Connect IMAP with PASSWORD") do |o|
    options[:imap_password] = o
  end
  
  opts.on("--imap-mailboxes [INBOX,IN]", Array, "Read IMAP MAILBOXES") do |o|
    options[:imap_mailboxes] = o
  end
  
  opts.separator ""
  opts.separator "Redis:"
  
  opts.on("--redis-url [URL]", "Connect Redis to URL") do |o|
    options[:redis_url] = o
  end
  
  opts.on("--redis-ns-redimap [NS]", "Namespace Redis 'redimap:' as NS") do |o|
    options[:redis_ns_redimap] = o
  end
  
  opts.on("--redis-ns-queue [NS]", "Namespace Redis 'resque:' as NS") do |o|
    options[:redis_ns_queue] = o
  end
  
  opts.separator ""
  opts.separator "Other:"
  
  opts.on("-v", "--[no-]verbose", "Be somewhat verbose") do |o|
    options[:log_level] = 'DEBUG'
  end
  
  opts.on_tail("--help", "Show this message") do
    puts opts
    exit
  end
  
  opts.on_tail("--version", "Show version") do
    puts "Redimap version:#{Redimap::VERSION}"
    exit
  end
end.parse!


# = Configure

Redimap.configure do |c|
  %w[
    log_level
    imap_host
    imap_port
    imap_username
    imap_password
    imap_mailboxes
    redis_url
    redis_ns_redimap
    redis_ns_queue
    polling_interval
  ].each do |e_k|
    e_v = case e_k
    when 'imap_port'
      ENV[e_k].to_i
    when 'imap_mailboxes'
      ENV[e_k].split(',')
    else
      ENV[e_k]
    end if ENV[e_k] # Read env var if set, parsing as for params.
    
    e_v = options[e_k.to_sym] if options[e_k.to_sym] # Override from params.
    
    c.instance_variable_set("@#{e_k}", e_v) if e_v # Only set extant settings.
  end
end

@logger = Redimap.logger


# = Main loop

loop do
  Redimap.queue_new_mailboxes_uids
  
  break unless (options[:eternal] || ENV['eternal'].to_i == 1)
  
  @logger.debug { "Snoring for #{Redimap.config.polling_interval} s" }
  
  sleep Redimap.config.polling_interval # Sleep awhile.
end