# -*- encoding : utf-8 -*-
require 'stringio'
require 'delegate'
require 'tempfile'
require 'flame_channel_parser'
require "obuf"
require "progressive_io"

module Tracksperanto
  PATH = File.expand_path(File.dirname(__FILE__))
  VERSION = '2.9.4'
  
  module Import; end
  module Export; end
  module Middleware; end
  module Pipeline; end
  
  class UnknownExporterError < NameError; end
  class UnknownImporterError < NameError; end
  class UnknownMiddlewareError < NameError; end
  
  class << self
    # Returns the array of all exporter classes defined
    attr_accessor :exporters
    
    # Returns the array of all importer classes defined
    attr_accessor :importers
    
    # Returns the array of all available middlewares
    attr_accessor :middlewares
    
    # Returns the names of all the importers
    def importer_names
      importers.map{|e| e.const_name }
    end
    
    # Returns the names of all the exporters
    def exporter_names
      exporters.map{|e| e.const_name }
    end
    
    # Returns the names of all the middlewares
    def middleware_names
      middlewares.map{|e| e.const_name }
    end
  end
  
  self.exporters, self.importers, self.middlewares = [], [], []

  # Case-insensitive search for a middleware class by name
  def self.get_middleware(name)
    middlewares.each do | x |
      return x if x.const_name.downcase == name.downcase
    end
    
    raise UnknownMiddlewareError, "Unknown middleware #{name.inspect}"
  end
    
  # Case-insensitive search for an export module by name
  def self.get_exporter(name)
    exporters.each do | x |
      return x if x.const_name.downcase == name.downcase
    end
    
    raise UnknownExporterError, "Unknown exporter #{name.inspect}"
  end
  
  # Case-insensitive search for an export module by name
  def self.get_importer(name)
    importers.each do | x |
      return x if x.const_name.downcase == name.downcase
    end
    
    raise UnknownImporterError, "Unknown importer #{name.inspect}"
  end
  
  # DEPRECATED, will be removed in Tracksperanto 3
  class Accumulator < Obuf
  end
  
  # DEPRECATED, will be removed in Tracksperanto 3
  class Tracksperanto::ProgressiveIO < ProgressiveIO
  end
  
end

%w(
  returning
  const_name
  casts
  block_init
  safety
  zip_tuples
  keyframe
  tracker
  format_detector
  ext_io
  buffer_io
  simple_export
  uv_coordinates
  buffering_reader
).each do | submodule |
  require File.join(Tracksperanto::PATH, "tracksperanto", submodule)
end

# Load importers
Dir.glob(File.dirname(__FILE__) + '/import/*.rb').sort.each do | i |
  require i
end

# Load exporters
Dir.glob(File.dirname(__FILE__) + '/export/*.rb').sort.each do | i |
  require i
end

# Load middleware
Dir.glob(File.dirname(__FILE__) + '/middleware/*.rb').sort.each do | i |
  require i
end

# Load pipelines
Dir.glob(File.dirname(__FILE__) + '/pipeline/*.rb').sort.each do | i |
  require i
end