class Classic
  attr_reader :android_sdk_path, :name, :pkg, :www, :path

  def initialize(a)
    @android_sdk_path, @name, @pkg, @www, @path = a
    build
  end
  
  def build
    setup
    clobber
    build_jar
    create_android
    include_www
    generate_manifest
    copy_libs
    add_name_to_strings
    write_java
  end 
  
  def setup
    @android_dir    = File.expand_path(File.dirname(__FILE__).gsub('lib',''))
    @framework_dir  = File.join(@android_dir, "framework")
    @icon           = File.join(@www, 'icon.png')
    @app_js_dir     = ''
    @content        = 'index.html'
  end
  
  # replaces @path with new android project
  def clobber
    FileUtils.rm_r(@path) if File.exists? @path
    FileUtils.mkdir_p @path
  end
  
  # removes local.properties and recreates based on android_sdk_path 
  # then generates framework/phonegap.jar
  def build_jar
    %w(local.properties phonegap.js phonegap.jar).each do |f|
      FileUtils.rm File.join(@framework_dir, f) if File.exists? File.join(@framework_dir, f)
    end
    open(File.join(@framework_dir, "local.properties"), 'w') do |f|
      f.puts "sdk.dir=#{ @android_sdk_path }"
    end 
    Dir.chdir(@framework_dir)
    `ant jar`
    Dir.chdir(@android_dir)
  end

  # runs android create project
  # TODO need to allow more flexible SDK targetting via config.xml
  def create_android
    target_id = `android list targets | grep id:`.split("\n").last.match(/\d+/).to_a.first
    `android create project -t #{ target_id } -k #{ @pkg } -a #{ @name } -n #{ @name } -p #{ @path }`
  end
  
  # copies the project/www folder into tmp/android/www
  def include_www
    FileUtils.mkdir_p File.join(@path, "assets", "www")
    FileUtils.cp_r File.join(@www, "."), File.join(@path, "assets", "www")
  end

  # creates an AndroidManifest.xml for the project
  def generate_manifest
    manifest = ""
    open(File.join(@framework_dir, "AndroidManifest.xml"), 'r') do |old|
      manifest = old.read
      manifest.gsub! 'android:versionCode="5"', 'android:versionCode="1"'
      manifest.gsub! 'package="com.phonegap"', "package=\"#{ @pkg }\""
      manifest.gsub! 'android:name=".StandAlone"', "android:name=\".#{ @name.gsub(' ','') }\""
      manifest.gsub! 'android:minSdkVersion="5"', 'android:minSdkVersion="3"'
    end
    open(File.join(@path, "AndroidManifest.xml"), 'w') { |x| x.puts manifest }
  end

  # copies stuff from src directory into the android project directory (@path)
  def copy_libs
    framework_res_dir = File.join(@framework_dir, "res")
    app_res_dir = File.join(@path, "res")
    # copies in the jar
    FileUtils.mkdir_p File.join(@path, "libs")
    FileUtils.cp File.join(@framework_dir, "phonegap.jar"), File.join(@path, "libs")
    # copies in the strings.xml
    FileUtils.mkdir_p File.join(app_res_dir, "values")
    FileUtils.cp File.join(framework_res_dir, "values","strings.xml"), File.join(app_res_dir, "values", "strings.xml")
    # drops in the layout files: main.xml and preview.xml
    FileUtils.mkdir_p File.join(app_res_dir, "layout")
    %w(main.xml).each do |f|
      FileUtils.cp File.join(framework_res_dir, "layout", f), File.join(app_res_dir, "layout", f)
    end
    # icon file copy
    # if it is not in the www directory use the default one in the src dir
    @icon = File.join(framework_res_dir, "drawable", "icon.png") unless File.exists?(@icon)
    %w(drawable-hdpi drawable-ldpi drawable-mdpi).each do |e|
      FileUtils.mkdir_p(File.join(app_res_dir, e))
      FileUtils.cp(@icon, File.join(app_res_dir, e, "icon.png"))
    end
    # concat JS and put into www folder. this can be overridden in the config.xml via @app_js_dir
    js_dir = File.join(@framework_dir, "assets", "js")
    phonegapjs = IO.read(File.join(js_dir, 'phonegap.js.base'))
    Dir.new(js_dir).entries.each do |script|
      next if script[0].chr == "." or script == "phonegap.js.base"
      phonegapjs << IO.read(File.join(js_dir, script))
      phonegapjs << "\n\n"
    end
    File.open(File.join(@path, "assets", "www", @app_js_dir, "phonegap.js"), 'w') {|f| f.write(phonegapjs) }
  end
  
  # puts app name in strings
  def add_name_to_strings
    x = "<?xml version=\"1.0\" encoding=\"utf-8\"?>
    <resources>
      <string name=\"app_name\">#{ @name }</string>
      <string name=\"go\">Snap</string>
    </resources>
    "
    open(File.join(@path, "res", "values", "strings.xml"), 'w') do |f|
      f.puts x.gsub('    ','')
    end 
  end 

  # this is so fucking unholy yet oddly beautiful
  # not sure if I should thank Ruby or apologize for this abusive use of string interpolation
  def write_java
    j = "
    package #{ @pkg };

    import android.app.Activity;
    import android.os.Bundle;
    import com.phonegap.*;

    public class #{ @name.gsub(' ','') } extends DroidGap
    {
        @Override
        public void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            super.loadUrl(\"file:///android_asset/www/#{ @content }\");
        }
    }
    "
    code_dir = File.join(@path, "src", @pkg.gsub('.', File::SEPARATOR))
    FileUtils.mkdir_p(code_dir)
    open(File.join(code_dir, "#{ @name }.java"),'w') { |f| f.puts j }
  end
  
  # friendly output for now
  def msg
    puts "Created #{ @path }"
  end
  #
end