require 'active_support'
require 'fileutils'
require 'bivouac/template'

class Backpack
  include Bivouac::Template
  
  def initialize( o, n )
    @plugin_options = o
    @plugin_name = n
    @plugin_path = n.underscore.gsub( /[^a-zA-Z0-9]/, "_" )
    @plugin_module_name = @plugin_path.classify
  end
  
  def run( )
    makeGeneralStructure( )
    makeGenerators( )
    makeHelpersLib( )
  end
  
  private
  def makeGeneralStructure
    # Create Plugin Directory
    createDir( @plugin_path )
    createDir( "#{@plugin_path}/copy_on_install" )
    createDir( "#{@plugin_path}/copy_on_install/public" )
    createDir( "#{@plugin_path}/copy_on_install/public/images" )
    createDir( "#{@plugin_path}/copy_on_install/public/javascripts" )
    createDir( "#{@plugin_path}/copy_on_install/public/stylesheets" )
    createDir( "#{@plugin_path}/tasks" )
    
    # Create README file
    createFile( "#{@plugin_path}/README" ) { |io|
      io.puts template( "README", binding, File.dirname(__FILE__) ) 
    }
    
    # Create INSTALL file
    createFile( "#{@plugin_path}/INSTALL" ) { |io|
      io.puts template( "INSTALL", binding, File.dirname(__FILE__) ) 
    }
    
    # Create README file
    createFile( "#{@plugin_path}/LICENCE" ) { |io|
      io.puts template( "LICENCE", binding, File.dirname(__FILE__) ) 
    }
    
    # Create rake tasks file
    createFile( "#{@plugin_path}/tasks/#{@plugin_path}.rake" ) { |io|
      io.puts template( "tasks/tasks", binding, File.dirname(__FILE__) ) 
    }
  end
  
  def makeGenerators
    return unless @plugin_options.has_key?( :generators )
    
    createDir( "#{@plugin_path}/generators" )
    @plugin_generators_list = @plugin_options[:generators].map{|h| ":"+h[0]}.join( ", " )
    createFile( "#{@plugin_path}/generators/#{@plugin_path}.rb" ) { |io|
      io.puts template( "generators/plugin_begin", binding, File.dirname(__FILE__) )
      
      @plugin_options[:generators].each do |g|
        @generator_name, @generator_type = g
        io.puts template( "generators/plugin_generator", binding, File.dirname(__FILE__) )
      end
      
      io.puts template( "generators/plugin_end", binding, File.dirname(__FILE__) )
    }
    
    createDir( "#{@plugin_path}/generators/template" )
    @plugin_options[:generators].each do |g|
      @generator_name, @generator_type = g
      @generator_type_class = @generator_type.classify.pluralize
      createFile( "#{@plugin_path}/generators/template/#{@generator_name}_#{@generator_type}.rb" ) { |io|
        io.puts template( "generators/template/template_#{@generator_type}", binding, File.dirname(__FILE__) )
      }
    end
  end
  
  def makeHelpersLib
    unless @plugin_options.has_key?( :noch ) and @plugin_options.has_key?( :novh )
      createDir( "#{@plugin_path}/lib" )
      createDir( "#{@plugin_path}/lib/#{@plugin_path}" )
      
      createFile( "#{@plugin_path}/init.rb" ) { |io|
        io.puts template( "init", binding, File.dirname(__FILE__) )
        io.puts template( "init_view", binding, File.dirname(__FILE__) ) unless @plugin_options.has_key?( :novh )
        io.puts template( "init_controller", binding, File.dirname(__FILE__) ) unless @plugin_options.has_key?( :noch )
      }
      
      unless @plugin_options.has_key?( :novh )
        createFile( "#{@plugin_path}/lib/#{@plugin_path}/view_helpers.rb" ) { |io|
          io.puts template( "lib/plugin/view_helpers", binding, File.dirname(__FILE__) )
        }
      end
      
      unless @plugin_options.has_key?( :noch )
        createFile( "#{@plugin_path}/lib/#{@plugin_path}/controller_helpers.rb" ) { |io|
          io.puts template( "lib/plugin/controller_helpers", binding, File.dirname(__FILE__) )
        }
      end
    end
  end
end