#!/usr/bin/env ruby
require 'thor'
require 'xcodeproj'
require 'erb'

class FWT < Thor
  
  include Thor::Actions
  
  def self.source_root
    File.join(File.dirname(__FILE__), '..')
  end
  
  desc "new APP_PATH PREFIX", "Creates a new Future Workshops iOS project"
  def new(app_path, prefix)
    
    setup_cocoapods
    
    @app_name = File.basename(app_path)
    @prefix = prefix.upcase
    @path = app_path
    supporting_files = 'Supporting Files'
    
    @project = Xcodeproj::Project.new
    @project.root_object.build_configuration_list

    info_plist = "#{@app_name}-Info.plist"
    process_template("Info.plist.erb", info_plist, supporting_files)
    
    target = @project.new_target(:application, @app_name, :ios)
    
    add_system_framework('UIKit')
    add_system_framework('CoreGraphics')
    
    add_build_settings_to_target({
      'INFOPLIST_FILE' => "$(SRCROOT)/#{@app_name}/#{@app_name}-Info.plist", 
      'GCC_PREFIX_HEADER' => "#{@app_name}/#{@app_name}-Prefix.pch",
      'SKIP_INSTALL' => 'NO',
      'IPHONEOS_DEPLOYMENT_TARGET' => '6.0',
      }, target)
    
    app_d_h = process_template("AppDelegate.h.erb", "#{@prefix}AppDelegate.h")    
    app_d_m = process_template("AppDelegate.m.erb", "#{@prefix}AppDelegate.m")
    main_m = process_template("main.m.erb", "main.m", supporting_files)
    prefix_pch = process_template("Prefix.pch.erb", "#{@app_name}-Prefix.pch", supporting_files)

    target.add_file_references([app_d_m, main_m])
    
    # final save
    @project.save_as File.join(@path, "#{@app_name}.xcodeproj")
    @workspace = Xcodeproj::Workspace.new("#{@app_name}.xcodeproj")
    @workspace.save_as File.join(@path, "#{@app_name}.xcworkspace")
    
    # Ruby
    template 'templates/fwt/rvmrc.erb', File.join(@path, '.rvmrc')
    template 'templates/fwt/Gemfile.erb', File.join(@path, 'Gemfile')
    template 'templates/fwt/Rakefile.erb', File.join(@path, 'Rakefile')
    template 'templates/fwt/Podfile.erb', File.join(@path, 'Podfile')
    template 'templates/fwt/gitignore.erb', File.join(@path, '.gitignore')
    
    sleep 2 # flushing issues?
    
    inside(@path) do
      run "rvm gemset create #{@app_name}", {:capture => true} 
      run "rvm gemset use #{@app_name}", {:capture => true} 
      run 'bundle', {:capture => true} 
      #run 'rake pod:clean_install', {:capture => true} 
      run "rake frank:setup['#{@app_name}','#{@prefix}']", {:capture => true} 
    end
  end
  
  private
    def add_build_settings_to_target(map, target)
      target.build_settings('Debug').merge! map
      target.build_settings('Release').merge! map      
    end
  
    def add_system_framework(name)
      framework = @project.add_system_framework(name)
      target = @project.targets.first
      build_phase = target.frameworks_build_phase
      build_phase.add_file_reference framework
    end
  
    def setup_cocoapods
      unless Dir.exists?(File.join(Dir.home, '.cocoapods', 'fw'))
        run 'gem install cocoapods', {:capture => true} 
        run 'pod repo add fw git@github.com:FutureWorkshops/FWTPodspecs.git', {:capture => true}
      end
    end
  
    def process_template(template_filename, destination_filename, destination_group = "", template_project = 'default_project')
      template "templates/fwt/#{template_project}/#{template_filename}", File.join(@path, @app_name, destination_filename)
      @project.new_file(File.join(@app_name, destination_filename), File.join(@app_name, destination_group))    
    end
  
end

module Xcodeproj
  class Project
    def add_system_framework(name)
      path = "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/System/Library/Frameworks/#{name}.framework"
      if file = frameworks_group.files.select { |f| f.path == path }.first
        file
      else
        framework_ref = frameworks_group.new_file(path)
        framework_ref.name = "#{name}.framework"
        framework_ref.source_tree = 'SDKROOT'
        framework_ref
      end
    end
  end
end

FWT.start