begin
  require 'ant'
rescue LoadError
  puts 'This Rakefile requires JRuby. Please use jruby -S rake.'
  exit 1
end

require 'rake/clean'
require 'dubious_tasks'

OUTDIR = 'WEB-INF/classes'
CLEAN.include(OUTDIR)
CLOBBER.include("WEB-INF/lib/dubious.jar", 'WEB-INF/appengine-generated')


mirah_compile_options :dest_path => OUTDIR,
                      :source_paths => ['lib', 'app' ],
                      :compiler_options => ['--classpath', [File.expand_path(OUTDIR), *FileList["WEB-INF/lib/*.jar"].map{|f|File.expand_path(f)}].join(':') + ':' + CLASSPATH ]

def class_files_for files
  files.map do |f|
    explode = f.split('/')[1..-1]
    explode.last.gsub!(/(^[a-z]|_[a-z])/) {|m|m.sub('_','').upcase}
    explode.last.sub! /\.(duby|java|mirah)$/, '.class'
    OUTDIR + '/' + explode.join('/')
  end
end

MODEL_JAR = "WEB-INF/lib/dubydatastore.jar"

LIB_MIRAH_SRC = Dir["lib/**/*.{duby,mirah}"]
LIB_JAVA_SRC  = Dir["lib/**/*.java"]
LIB_SRC = LIB_MIRAH_SRC + LIB_JAVA_SRC

APP_SRC = Dir["app/**/{*.duby,*.mirah}"]
TEMPLATES = Dir["app/views/**/*.erb"]

LIB_CLASSES = class_files_for LIB_SRC
APP_CLASSES = class_files_for APP_SRC
APP_MODEL_CLASSES = APP_CLASSES.select {|app| app.include? '/models' }
APP_CONTROLLER_CLASSES = APP_CLASSES.select {|app| app.include? '/controllers' }
APP_APPLICATION_CONTROLLER_CLASS = APP_CONTROLLER_CLASSES.find {|controller| controller.include? 'ApplicationController' }

directory OUTDIR

(APP_CLASSES+LIB_CLASSES).zip(APP_SRC+LIB_SRC).each do |klass,src|
  file klass => src
end

APP_CONTROLLER_CLASSES.reject{|k| k == APP_APPLICATION_CONTROLLER_CLASS }.each do |klass|
  file klass => APP_APPLICATION_CONTROLLER_CLASS
end

APP_CONTROLLER_CLASSES.each do |f|
  file f => APP_MODEL_CLASSES + TEMPLATES
end

APP_CLASSES.each do |f|
  file f => LIB_CLASSES
end

file MODEL_JAR => MODEL_SRC_JAR do |t|
  cp MODEL_SRC_JAR, MODEL_JAR
end

appengine_app :app, 'app', '' => APP_CLASSES+LIB_CLASSES

namespace :compile do
  task :app => APP_CLASSES

  task :java => OUTDIR do
    ant.javac :srcdir => 'lib', :destdir => OUTDIR, :classpath => CLASSPATH
  end
end

desc "compile app"
task :compile => 'compile:app'