#!/usr/bin/env ruby
# encoding: ascii-8bit

# Copyright 2022 Ball Aerospace & Technologies Corp.
# All Rights Reserved.
#
# This program is free software; you can modify and/or redistribute it
# under the terms of the GNU Affero General Public License
# as published by the Free Software Foundation; version 3 with
# attribution addendums as found in the LICENSE.txt
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# This program may also be used under the terms of a commercial or
# enterprise edition license of COSMOS if purchased from the
# copyright holder

# This file converts to and from the .xtce file format

require 'ostruct'
require 'optparse'
require 'cosmos'

input_filename = nil

option_parser = OptionParser.new do |option_parser|
  option_parser.banner = "Usage: xtce_converter [options] --import input_xtce_filename output_dir\n       xtce_converter [options] --export output_dir"
  option_parser.separator("")

  # Create the help option
  option_parser.on("-h", "--help", "Show this message") do
    puts option_parser
    exit
  end

  # Create the version option
  option_parser.on("-v", "--version", "Show version") do
    puts "COSMOS Version: #{COSMOS_VERSION}"
    puts "User Version: #{USER_VERSION}" if defined? USER_VERSION
    exit
  end

  # Create the system option
  option_parser.on("--system VALUE", "Use an alternative system.txt file") do |arg|
    Cosmos::System.instance(File.join(USERPATH, 'config', 'system', arg))
  end

  # Handle --import mode
  option_parser.on("-i VALUE", "--import VALUE", "Import the specified .xtce file") do |arg|
    input_filename = arg
  end

  # Handle --export mode
  option_parser.on("-e", "--export", "Create .xtce file(s) from the COSMOS Configuration") do |arg|
    # This is optional and the default
  end
end

begin
  option_parser.parse!(ARGV)
rescue => err
  puts err
  puts option_parser
  exit
end

if ARGV[0]
  output_dir = ARGV[0]
else
  puts option_parser
  exit
end

if input_filename
  packet_config = Cosmos::PacketConfig.new
  puts "Processing #{input_filename}..."
  packet_config.process_file(input_filename, nil)
  puts "Converting to COSMOS config files in #{output_dir}"
  packet_config.to_config(output_dir)
  puts "Success"
  exit 0
else
  puts "Loading COSMOS Configuration..."
  Cosmos::System.commands
  puts "Converting configuration to .xtce files in #{output_dir}"
  Cosmos::System.instance.instance_variable_get(:@config).to_xtce(output_dir)
  puts "Success"
  exit 0
end