##############################################################################
# This file is part of the TouchGFX 4.13.0 distribution.
#
# <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
# All rights reserved.</center></h2>
#
# This software component is licensed by ST under Ultimate Liberty license
# SLA0044, the "License"; You may not use this file except in compliance with
# the License. You may obtain a copy of the License at:
#                             www.st.com/SLA0044
#
##############################################################################

$:.unshift File.dirname(__FILE__)

WINDOWS_LINE_ENDINGS = "\r\n"
UNIX_LINE_ENDINGS = "\n"
#on windows/mingw file.write will it self translate \n to \r\n, on linux not
LINE_ENDINGS = RUBY_PLATFORM.match(/linux/) ? WINDOWS_LINE_ENDINGS : UNIX_LINE_ENDINGS

def root_dir
  # Get the dirname of this (main.rb) file:
  @root_dir ||= File.dirname(__FILE__)
end

class Main
  def self.banner
    <<-BANNER
Create binary and cpp text files from excel translations

Usage: #{File.basename($0)} file.xlsx path/to/fontconvert.out path/to/fonts_output_dir path/to/localization_output_dir path/to/font/asset calling_path {remap|yes|no} {A4|A8} {binary_translations} {binary_fonts} {RGB565|RGB888|BW|GRAY2|GRAY4|ARGB2222|ABGR2222|RGBA2222|BGRA2222}
Where 'remap'/'yes' will map identical texts to the same memory area to save space
      'A4'/'A8' is will generate fonts in the given format
      'binary_translations' will generate binary translations instead of cpp files
      'binary_fonts' will generate binary font files instead of cpp files
      last argument is the framebuffer format (used to limit the bit depth of the generated fonts)
BANNER
  end

  def self.missing_files
    return !File.exists?("#{@fonts_output_path}/include/fonts/ApplicationFontProvider.hpp") ||
           !File.exists?("#{@localization_output_path}/include/texts/TextKeysAndLanguages.hpp")
  end

  if __FILE__ == $0

    if ARGV.count < 6
      abort self.banner
    end

    file_name = ARGV.shift
    font_convert_path = ARGV.shift
    @fonts_output_path = ARGV.shift
    @localization_output_path = ARGV.shift
    font_asset_path = ARGV.shift
    $calling_path = ARGV.shift

    #optional arguments
    if ARGV.include?("yes") or ARGV.include?("remap")
      remap_identical_texts = "yes"
    end

    data_format = ""
    if ARGV.include?("A4")
      data_format = "A4"
    end
    if ARGV.include?("A8")
      data_format = "A8"
    end

    generate_binary_language_files = ""
    if ARGV.include?("binary_translations")
      generate_binary_language_files = "yes"
      if remap_identical_texts == "yes"
        puts "Disabling remapping of identical texts, because binary language files are generated"
        remap_identical_texts = "no"
      end
    end

    generate_binary_font_files = "no"
    if ARGV.include?("binary_fonts")
      generate_binary_font_files = "yes"
    end

    framebuffer_bpp = ""
    ["BPP32", "BPP24", "BPP16", "BPP8", "BPP4", "BPP2", "BPP1"].each do |format|
      if ARGV.include?(format)
        framebuffer_bpp = format
      end
    end

    require 'fileutils'
    require 'json'
    require 'lib/file_io'

    if File.file?("application.config")
      text_conf = JSON.parse(File.read("application.config"))["text_configuration"] || {}

      remap = text_conf["remap"]
      if !remap.nil?
        remap_identical_texts = remap == "yes" ? "yes" : "no"
      end

      a4 = text_conf["a4"]
      if !a4.nil?
        data_format = a4 == "yes" ? "A4" : ""
      end

      binary_translations = text_conf["binary_translations"]
      if !binary_translations.nil?
        generate_binary_language_files = binary_translations == "yes" ? "yes" : ""
        if generate_binary_language_files == "yes" && remap_identical_texts == "yes"
          puts "Disabling remapping of identical texts, because binary language files are generated"
          remap_identical_texts = "no"
        end
      end

      binary_fonts = text_conf["binary_fonts"]
       if !binary_fonts.nil?
        generate_binary_font_files = binary_fonts== "yes" ? "yes" : "no"
      end

      bpp = text_conf["framebuffer_bpp"]
       if !bpp.nil?
        framebuffer_bpp = "BPP" + bpp
      end
    end

    begin
      # 1. if text_converter is newer than compile_time.cache, remove all files under generated/texts and generated/fonts
      # 1b if generated/fonts/include/fonts/ApplicationFontProvider.hpp is missing, force generation of TextKeysAndLanguages.hpp
      # 1c if generated/texts/cache/options.cache contents differ from supplies arguments, force run
      # 2. if generated/texts/cache/compile_time.cache is newer than excel sheet and fonts/ApplicationFontProvider.hpp exists then stop now
      # 3. remove UnicodeList*.txt and CharSizes*.csv
      # 4. create #{@localization_output_path}/include/texts/ and #{@fonts_output_path}/include/fonts/

      # 1:
      text_converter_time = [File.mtime( __FILE__), File.ctime( __FILE__ )].max;

      if ((compile_time_exists = File.exists?("#{@localization_output_path}/cache/compile_time.cache")) && text_converter_time > File.mtime("#{@localization_output_path}/cache/compile_time.cache")) || !compile_time_exists
        #remove all files, as text converter is newer (probably upgraded to new TouchGFX)
        puts "Cleaning generated files from #{@localization_output_path} and #{@fonts_output_path}."
        if @localization_output_path.match /generated\/texts$/
          local_path = @localization_output_path.gsub('\\','/')
          FileUtils.rm_rf("#{local_path}")
        end
        if @fonts_output_path.match /generated\/fonts$/
          local_path = @fonts_output_path.gsub('\\','/')
          FileUtils.rm_rf("#{local_path}")
        end
      end

      # 1b:
      $Force_Generate_TextKeysAndLanguages = self.missing_files

      # 1c:
      force_run = false
      options_file = "#{@localization_output_path}/cache/options.cache"
      options = File.exists?(options_file) && File.read(options_file)

      new_options = ""
      if File.file?("application.config")
        new_options = JSON.parse(File.read("application.config"))["text_configuration"]
      else
        new_options = ARGV.to_json
      end

      if(options != new_options)
        force_run = true
        FileIO.write_file_silent(options_file, new_options)
      end

      # 2:
      if File.exists?("#{@localization_output_path}/cache/compile_time.cache") && !self.missing_files && !force_run
        excel_mod_time = [File.mtime(file_name), File.ctime(file_name)].max
        if excel_mod_time < File.mtime("#{@localization_output_path}/cache/compile_time.cache")
          exit
        end
      end

      # 3:
      Dir["#{@fonts_output_path}/UnicodeList*.txt"].each do |text_file|
        FileUtils.rm_f(text_file)
      end
      Dir["#{@fonts_output_path}/CharSizes*.csv"].each do |text_file|
        FileUtils.rm_f(text_file)
      end

      # 4:
      FileUtils.mkdir_p("#{@localization_output_path}/include/texts/")
      FileUtils.mkdir_p("#{@fonts_output_path}/include/fonts")

      require 'rubygems'
      require 'lib/generator'
      require 'lib/emitters/fonts_cpp'
      FontsCpp.font_convert = font_convert_path
      Generator.new.run(file_name, @fonts_output_path, @localization_output_path, font_asset_path, data_format, remap_identical_texts, generate_binary_language_files, generate_binary_font_files, framebuffer_bpp)
      #touch the cache compile time that we rely on in the makefile
      FileUtils.touch "#{@localization_output_path}/cache/compile_time.cache"

    rescue SystemExit => e

    rescue Exception => e
      STDERR.puts e
      abort "an error occurred in converting texts:\r\n#{e}"
    end
  end
end
