module Airake 
  # Project settings for AIR app
  class Project
  
    attr_reader :project_name, :mxmlc_path, :adt_path
    attr_reader :base_dir, :bin_dir, :src_dir, :lib_dir, :test_dir
    attr_reader :mxml_path, :appxml_path, :air_path, :swf_path
    attr_reader :debug
  
    def initialize(base_dir, mxml_path, options = {})
      @mxmlc_path = "mxmlc"
      @adt_path = "adt"

      @base_dir = base_dir
      @bin_dir = File.join(base_dir, "bin")
      @src_dir = File.join(base_dir, "src")
      @lib_dir = File.join(base_dir, "lib")
      @test_dir = File.join(base_dir, "test")
    
      @project_name = File.basename(mxml_path, ".mxml")
      @mxml_path = mxml_path
      mxml_dir = File.expand_path(File.dirname(mxml_path))
    
      @appxml_path = options[:appxml_path] || "#{mxml_dir}/#{project_name}-app.xml"
    
      # Dest package files
      @air_path = options[:air_path] || "#{@bin_dir}/#{project_name}.air"
      @swf_path = options[:swf_path] || "#{@bin_dir}/#{project_name}.swf"
    
      @debug = options[:debug] || false
    end
    
    def run_adt
      run(adt_command)
    end
  
    def run_mxmlc    
      run(mxmlc_command)
    end
  
    def run_adl
      run(adl_command)
    end
    
    def mxmlc_command
      "#{@mxmlc_path} +configname=air #{source_path_option} -library-path+=#{@lib_dir} -output #{@swf_path} #{debug_option} -disable-incremental-optimizations=true -- #{@mxml_path}"
    end
  
    def adt_command
      "#{@adt_path} -package #{relative_path(@air_path)} #{relative_path(@appxml_path)} #{relative_path(@swf_path)}"
    end
  
    def adl_command
      "adl #{@appxml_path} #{@base_dir}"
    end        
    
    # Create project from ENV (for rake tasks)
    def self.new_from_rake(env, is_test = false)
      base_dir = env["BASE_DIR"]
      mxml = is_test ? env["MXML_TEST"] : env["MXML"]
      options = { :debug => env["DEBUG"] }
      self.new(base_dir, mxml, options)
    end
    
  protected     
        
    def lib_source_paths
      Dir["#{@lib_dir}/*"].collect { |f| f if File.directory?(f) }.compact + [ @test_dir, @src_dir ]
    end
  
    def source_path_option
      @source_paths ||= lib_source_paths
      @source_paths.empty? ? "" : "-source-path #{@source_paths.join(" ")}"
    end
  
    def debug_option
      "-debug=#{@debug}" if @debug
    end    
  
    def relative_path(path)
      Pathname.new(path).relative_path_from(Pathname.new(@base_dir))
    end
  
    def fail(cmd, error_status)
      fail_message = <<-EOS
        
        The '#{cmd.split.first}' command failed to run. This could be because this executable isn't in the path.
        
        To include mxmlc, adl and adt (from Flex Builder):
          export PATH="/Applications/Adobe Flex Builder 3/sdks/moxie/bin:$PATH"
          
        To include adl and adt (from Apollo SDK):
          export PATH="/Applications/ApolloSDK/bin:$PATH"
        
      EOS
      puts fail_message
      raise "[#{error_status}] Failed to run command: #{cmd}"
    end

    def run(cmd)
      puts "Running: #{cmd}"
      system cmd or fail(cmd, $?)
    end
  
  end
end