# MasterView template engine rake tasks

# load MasterView engine with the std config (uses app config settings when in rails app)
mv_lib_dir_path = File.join( File.dirname(__FILE__), '../lib' )
MV_ADMIN_CONTROLLER_INSTALL_DIR_PATH = File.join( mv_lib_dir_path, 'masterview/extras' )  # ./app/views/masterview

# doing load and require this way so that it works from both gems and plugin install
$LOAD_PATH.push( mv_lib_dir_path )
require "masterview"

MasterView.set_log_level('ERROR')

namespace :mv do

  desc 'Display list and status about each MasterView template'
  task :list do
    template_specs, content_hash = MasterView::TemplateSpec.scan
    @template_specs_sorted = template_specs.sort
    @template_specs_sorted.each do |path, ts|
      puts "#{path}\t#{ts.status}\t#{ts.message}"
    end
  end

  desc 'Display list, status, and full details about each MasterView template'
  task :list_all do
    template_specs, content_hash = MasterView::TemplateSpec.scan
    @template_specs_sorted = template_specs.sort
    @template_specs_sorted.each do |path, ts|
      puts "#{path}\t#{ts.status}\t#{ts.message}"
      puts "\tgenerates: #{ts.gen_parts.join(', ')}\n\n"
    end
  end

  desc 'Rebuild/update template imports, specify TEMPLATE=foo/bar.html'
  task :rebuild do
    raise "Usage: rake mv:rebuild TEMPLATE=foo/bar.html" unless ENV['TEMPLATE']
    path = ENV['TEMPLATE']
    path = MasterView::IOMgr.template.cleanup_path_get_relative_pathname(path).to_s
    template_specs, content_hash = MasterView::TemplateSpec.scan
    template_spec = template_specs[path]
    raise 'Template '+path+' not found' unless template_spec
    if template_spec.rebuild_template(content_hash, :write_to_file => true)
      puts 'File '+path+' updated'
      puts 'Note: Backup was created in MasterView::IOMgr.backup location' if MasterView::IOMgr.backup
    else
      puts 'Identical content - no update needed for '+path
    end
  end

  desc 'Rebuild all outdated template imports'
  task :rebuild_all do
    files_rebuilt = []
    MasterView::TemplateSpec.scan do |template_spec, content_hash|
      if template_spec.status == MasterView::TemplateSpec::Status::ImportsOutdated &&
         template_spec.rebuild_template(content_hash, :write_to_file => true)
            files_rebuilt << template_spec.path
      end
    end
    files_rebuilt.each do |f|
      puts f+' updated'
    end
    unless files_rebuilt.empty? || MasterView::IOMgr.backup.nil?
      puts 'Note: Backups were created in MasterView::IOMgr.backup location' if MasterView::IOMgr.backup
    end
  end

  # checks app path first for views and files, then falls back to files in MV installation dir
  def find_path(path)
    mv_path = File.join( MV_ADMIN_CONTROLLER_INSTALL_DIR_PATH, path )
    working_path = (File.exist?(path)) ? path : mv_path
  end

  desc 'Create shell template using layout of existing masterview template, requires TEMPLATE=foo/bar.html ACTION=list'
  task :copy_layout do
      raise "Usage: rake mv:copy_layout TEMPLATE=foo/bar.html ACTION=list" unless ENV['TEMPLATE'] &&  ENV['ACTION']
      action_to_create = ENV['ACTION']
      path = ENV['TEMPLATE']
      path = MasterView::IOMgr.template.cleanup_path_get_relative_pathname(path).to_s
      empty_file_path = find_path('app/views/masterview/admin/empty.rhtml')
      empty_insert_erb = File.readlines(empty_file_path).join

      src_file = path
      dst_file = MasterView::TemplateSpec.create_empty_shell_for_action(src_file, action_to_create, empty_insert_erb, :write_to_file => true)
      puts dst_file+' created'
  end

  desc "Run parser manually on masterview html files to parse and generate the erb/rhtml files"
  task :parse do
    MasterView::IOMgr.template.find(:pattern => MasterView::TemplateFilenamePattern ) do |mio|
      puts 'Generated erb/rhtml files from '+mio.pathname.to_s
      MasterView::Parser.parse_mio(mio, MasterView::IOMgr.erb)
    end
    if MasterView::ConfigSettings.generate_rhtml_files
      puts 'Generated erb/rhtml output was created in app/views/** tree'
    else
      puts "\nNote: config.generate_rhtml_files was false, so rails reads erb/rhtml directly from MasterView, and thus files were parsed but not serialized to file system. Set config.generate_rhtml_files = true (in config/masterview/settings.rb) and rerun this command to generate rhtml to the file system"
    end
  end

  desc "View erb/rhtml that masterview generated - specify rhtml name like RHTML=product/_form.rhtml or RHTML=layouts/product.rhtml"
  task :view_rhtml do
    raise "Usage: rake mv:view_rhtml RHTML=product/_form.rhtml" unless ENV['RHTML']
    rhtml_file = ENV['RHTML']

    # make sure they are parsed
    string_hash_mio_tree = MasterView::MIO::StringHashMIOTree.new( {}, MasterView::ConfigSettings.generated_file_default_extension )
    MasterView::IOMgr.template.find(:pattern => MasterView::TemplateFilenamePattern ) do |mio|
      MasterView::Parser.parse_mio(mio, string_hash_mio_tree)
    end

    f = string_hash_mio_tree.path(rhtml_file)
    raise "RHTML ("+rhtml_file+") does not exist. Use rake mv:list_all to find correct rhtml file to view" unless f.exist?
    puts f.read
  end

end