root/trunk/app/controllers/repository_controller.rb @ 17

require 'model_loader'
require 'model_writer'
require 'ostruct'

class RepositoryController < ApplicationController
  layout 'admin'
  
  def select_repo
    if @request.post?
      unless @params['repo']['repository'].blank?
        reset_session
        cookies.delete "breadcrumb"
        @session['repo'] = @params['repo']
        begin
          set_repo
          redirect_to :controller => 'nav_class', :action => 'list'
        rescue => ex
          flash['notice'] = 'Invalid username/password/repository combination.'
        end
      end
    end
    @repos = SemanticRecord::Base::connection.list_repositories
  end

  def import
    @db = OpenStruct.new(@params['db'])
    if @request.post?
      begin
        if @db.script.blank?
          modelo = YAML.load(@db.file)
        else
          modelo = YAML.load(@db.script)
        end
      rescue => ex
        flash['notice'] = "Invalid database script, not valid YAML: #{ex}"
        return
      end

      begin
        ModelObserver.suspend
        SemanticRecord::Base.connection.clear_repository if @db.clear == '1'
        ModelLoader.new(modelo).load
        ModelObserver.resume
      rescue => ex 
        ModelObserver.resume
        flash['notice'] = "Error while importing script: #{ex}. 
        This might have left the repository in an inconsistent state."
        return
      end
      
      flash['notice'] = "Script imported succesfully!"
    end
  end
  
  def export
    
    if request.post?
      begin
        @file_name = "#{SemanticRecord::Base.repository['repository']}-#{Time.now.strftime("%Y-%m-%dT%H%M%S")}.tmp.yml"
        path = "#{RAILS_ROOT}/public/#{@file_name}"
        ModelWriter.new(path).write
      rescue => ex
        flash['notice'] = "Error while exporting repository: #{ex}."
        return
      end
      
      flash['notice'] = "Repository exported succesfully. Please download the YAML script below."
    end
    
  end
end