#!/usr/bin/ruby
=begin
Copyright 2010, Roger Pack 
This file is part of Sensible Cinema.

    Sensible Cinema is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Sensible Cinema 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Sensible Cinema.  If not, see <http://www.gnu.org/licenses/>.
=end

require File.dirname(__FILE__) + "/../lib/add_any_bundled_gems_to_load_path.rb"
require 'sane'

Thread.abort_on_exception=true # gah

for file in ['overlayer', 'keyboard_input', 'screen_tracker', 'mouse', 'file_chooser', 'ocr', 'vlc_programmer']
  require_relative '../lib/' + file
end

def go_sc(args)
  
  $VERBOSE = 1 if args.delete('-v')
  $DEBUG = 1 if args.delete('-d')
  if args.delete('--clear-cache')
    OCR.clear_cache! 
    puts 'cleared cache'
  end
  
  $stderr.puts 'warning: currently windows only for certain parts currently' unless ENV['OS'] == 'Windows_NT'
  
  if args.detect{|arg| arg == '-h' || arg == '--help'}
  
    puts <<-END
  
    syntax: [player_description.yml] [delete_list.txt|test] [-t -v --clear-cache] (or just nothing at all--it will prompt for all things needed)
    
    If you specify "test" for the edit list, it will pause 4s, take a snapshot of the player, then exit.
    Useful for debugging your screen capture of the current player.
    You can also specify -v or -t if you want to enable more verbose (chatty) output.
    
    END
      
    for file in Dir[__dir__ + '../zamples/mute*/*']
       puts "\n", "Example file:", file + "\n\n", File.read(file)
    end
    
    exit 1
    
  else
   
    # allow for command line filenames
  
    player_description = args.shift.to_s
    if !File.exist?(player_description)    
      puts 'Please Select Computer Player'
      player_description = FileChooser.choose_file("     SELECT COMPUTER PLAYER", __dir__ + "/../zamples/players")
    end
  
    edit_decision_list	 = args.shift.to_s
  
    if edit_decision_list	 == 'test'
      overlay = nil
      p 'got test...just doing screen dump'
      $VERBOSE=true # adds some extra output
    else
      if !File.exist? edit_decision_list	
        puts 'Select Edit Decision List'
        edit_decision_list	 = FileChooser.choose_file("     SELECT EDIT DECISION LIST", __dir__  + "/../zamples/edit_decision_lists")
      end
      
      if !edit_decision_list	
        puts "error: have to specify a scene descriptions file\n    or specify \"test\" on the command line if you just want to snapshot your player"
        exit 1
      end
      
      puts 'Selected scene descriptions file ' + File.basename(edit_decision_list) + "\n\t(full path: #{edit_decision_list})"
      Blanker.startup
      # todo start it late as it has an annoying startup blip
      overlay = OverLayer.new(edit_decision_list	)    
    end  
    
    if File.exist? player_description.to_s
      puts 'Selected player ' + File.basename(player_description) + "\n\t(full path: #{player_description})"
      # this one doesn't use any updates, so just pass in file contents, not filename
      screen_tracker = ScreenTracker.new_from_yaml File.binread(player_description), overlay
      does_not_need_mouse_jerk = YAML.load_file(player_description)["does_not_need_mouse_movement"]
      unless does_not_need_mouse_jerk
        p 'yes using mouse jitter' if $VERBOSE or $DEBUG
        Mouse.jitter_forever_in_own_thread # when this ends you know a snapshot was taken...
      else
        p 'not using mouse jitter' if $VERBOSE or $DEBUG
      end
      
      # exit early if we just wanted a screen dump...a little kludgey...
      unless overlay
        puts 'warning--only doing screen dump in t-minus 2s...'      
        sleep 2
        puts 'snap!'
        screen_tracker.dump_bmps
        exit 1
      end
      screen_tracker.process_forever_in_thread
    else
      puts 'warning--not using any screen tracking...'
    end
    
    OCR.unserialize_cache_from_disk # do this every time so we don't delete it if they don't have one...
  
    puts "Opening the curtains... (please play in your other video player now)"
    overlay.start_thread true
    key_input = KeyboardInput.new overlay
    key_input.start_thread # status thread
    at_exit {
      Blanker.shutdown # lodo move this and the 'q' key to within overlayer
      OCR.serialize_cache_to_disk
    }
    begin
      key_input.handle_keystrokes_forever # blocking...
    ensure
      puts "syntax from command line: \"#{player_description}\" \"#{edit_decision_list}\""
    end
    
  end
end

if __FILE__ == $0
 puts 'Welcome to Sensible Cinema...'
 go_sc ARGV
end