#!/usr/bin/env ruby

require "sftp_downloader"
require 'optparse'
require 'logger'

default_logger = Logger.new(STDOUT)
default_logger.formatter = proc do |severity, datetime, progname, msg|
  "#{datetime}: #{msg}\n"
end

options = {
  credentials: {},
}
cli_options = {}

opt_parse = OptionParser.new do |opts|
  opts.banner = "Usage: sftp_downloader [options]"

  opts.on("-u username", "--username=username", "Specify the username [required]") do |username|
    options[:credentials][:username] = username
  end

  opts.on("-p password", "--password=password", "Specify the password [required]") do |password|
    options[:credentials][:password] = password
  end

  opts.on("-h host", "--host=host", "Specify the host [required]") do |host|
    options[:credentials][:host] = host
  end

  opts.on("-fp file_pattern", "--file-pattern=file_pattern", "Specify the regexp to use to select the files to deal with") do |file_pattern|
    options[:file_pattern] = Regexp.new(file_pattern)
  end

  opts.on("-r", "--remove-after-download", "Delete the downloaded files in the remote location") do
    options[:remove_after_download] = true
  end

  opts.on("-lp path", "--local-path=path", "Specify the local path to save the files to") do |path|
    options[:local_path] = path
  end

  opts.on("-rp path", "--remote-path=path", "Specify the remote path to download the files from") do |path|
    options[:remote_path] = path
  end

  opts.on_tail("-h", "--help", "Show this message") do
    puts opts
    exit
  end

  opts.on_tail("--version", "Show version") do
    puts SftpDownloader::VERSION
    exit
  end

  opts.on('-v', '--verbose', 'Run verbosely') do
    cli_options[:verbose] = true
  end

  opts.on('-d', '--debug', 'Show debug info') do
    cli_options[:debug] = true
    options[:logger] = default_logger
  end
end

opt_parse.parse!

required_arguments = %i[host username password]
required_arguments.each do |argument|
  if options[:credentials][argument].nil?
    puts opt_parse
    exit
  end
end

client = SftpDownloader::Client.new(options)
client.perform do |local_path|
  if cli_options[:verbose]
    puts local_path
  end
end