#!/usr/bin/env ruby

class Build
  def start(*args)
    @android_sdk_path, @name, @pkg, @www, @path = args

    build_jar
    create_android
    generate_manifest
    copy_libs
    write_java
  end
  
  # creates framework/phonegap.jar using android_sdk_path 
  # 
  # TODO
  # - write out local.properties with android sdk every time
  def build_jar
    `touch #{ @android_sdk_path }` unless File.exists? @android_sdk_path
    `ant jar`
  end 

  # runs android create project
  def create_android
    `android create project -t 5 -k #{ @pkg } -a #{ @name } -n #{ @name } -p #{ @path }`
  end

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

  # copies stuff from framework into the project
  #
  # TODO need to allow for www import
  # - copy www into #{ @path }/assets/www
  # - copy www/icon.png into #{ @path }/res/drawable/icon.png
  #
  def copy_libs
    `cp framework/phonegap.jar #{ @path }/libs`
    `cp framework/res/values/strings.xml #{ @path }/res/values/strings.xml`
    `cp framework/res #{ @path }/res`
    `cp framework/assets/www #{ @path }/assets/wwww`
  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 } extends DroidGap
    {
        @Override
        public void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            super.loadUrl(\"file:///android_asset/www/index.html\");
        }
    }
    "
    open("#{ @path }/src/#{ @pkg.gsub '.', '/' }",'w') { |f| f.puts j }
  end
  #
end


if(ARGV.length == 5)
  Build.new.start(ARGV)  
else
  puts <<-EOF
  
  DroidGap: An Android PhoneGap Project Generator
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  Creates a fresh Android/PhoneGap app for hybrid mobile web hacking.
  
  Usage:
  
    ./droidgap <android_sdk_path> <name> <package_name> <www> <path>
  
  Params:
  
  android_sdk_path ... The path to your Android SDK install.
  name ............... The name of your application.
  package_name ....... The name of your package (For example: com.nitobi.demo)
  www ................ The name of your Web App.
  path ............... Location of where you want to work on your application.
  
  EOF
end