#!/bin/env ruby
#encoding: UTF-8

=begin
/***************************************************************************
 *   ©2023-2024, Michael Uplawski <michael.uplawski@uplawski.eu>           *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE *
 *                                                                         *
 *   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.                  *
 *                                                                         *
 ***************************************************************************/
=end
# This program is Linux only
if ! /linux/ =~ RUBY_PLATFORM
  msg = "ERROR ! This script #{$0} cannot be used with #{RUBY_PLATFORM}"
  msg << "\n\tABORTING! Bye."
  STDERR.puts msg
  exit false
end

require 'tempfile'
require 'filemagic'
require_relative '../lib/override'
require_relative '../lib/flnews_post_proc'
require_relative '../lib/basic_logging'
require_relative '../lib/configuration'
require_relative '../lib/version'

self.extend(BasicLogging)

def usage
  usage = "\nWhat do you want me to do? Where is the article to post-process?"
  usage << "\nUsage: "
  usage << "\n\t#{$0} < article.text"
  info usage
  STDERR.puts usage
  exit false 
end

msg = PROGNAME.dup << ' ' << PROGVERSION << ' starting' 
msg = "–––––– " << msg << " ––––––"
info msg
# Get a configuration 
config = Configuration::instance

# store the path to the main executable
# config.set(:BINDIR, File::dirname(__FILE__) )

# Only if data is on STDIN
if (!STDIN.tty?)
  # read from STDIN
  artext = ARGF.read

   # There is content, create the post-processor.
  if !artext.strip.empty? 
    mime = FileMagic.mime.buffer artext
    debug('mime is ' << mime)
    if mime.start_with?('message/news')  
      #----------->
      # Allow to override the configuration,
      # if not disabled (default is true)
      if config.OVERRIDE_CONFIG != false
        cdlg = OverrideDlg.new
        discarded = cdlg.show
        if discarded && !discarded.empty?    
          debug('options overriden ' << discarded)
          OverrideDlg.cvars.each do |v|    
            if discarded.include?(v.to_s)
              debug('removing ' << v.to_s)
              config.set(v, nil)
            end
          end
        end
        debug('new config: ' << config.inspect)
      end
      #<--------------
      pp = PostProcessor.new(artext)    
      # ... and print its result.
      article = pp.article
      if article 
        # -------------> The main objective <------
        puts article
        # <------------- over and out ------>
        exit true
      end
      # whatever.
      exit false
    else 
      error ("Input is of wrong mime-type" << mime)
    end
  else
    error( "Cannot read the article, no content" ) 
  end
else
  usage() 
end
# Ω