#--
# Copyright (c) 2010-2011 Michael Berkovich
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++

class Tr8n::TranslationsController < Tr8n::BaseController

  before_filter :validate_current_translator
  before_filter :validate_default_language, :except => [:translate, :permutate, :vote]
  
  # for ssl access to the translator - using ssl_requirement plugin  
  ssl_allowed :translate  if respond_to?(:ssl_allowed)
  
  # main translation method used by the translator and translation screens
  def translate
    @translation_key = Tr8n::TranslationKey.find(params[:translation_key_id])
    @translations = @translation_key.translations_for(tr8n_current_language)
    @source_url = params[:source_url] || request.env['HTTP_REFERER']
    
    unless request.post?
      trfe("Please use a translator window for submitting translations")
      return redirect_to(@source_url)
    end

    if params[:translation_id].blank?
      @translation = Tr8n::Translation.new(:translation_key => @translation_key, :language => tr8n_current_language, :translator => tr8n_current_translator)
    else  
      @translation = Tr8n::Translation.find(params[:translation_id])
    end
    
    @translation.label = sanitize_label(params[:translation][:label])
    @translation.rules = parse_rules

    unless @translation.can_be_edited_by?(tr8n_current_translator)
      tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to update translation which is locked or belongs to another translator")
      trfe("You are not authorized to edit this translation")
      return redirect_to(@source_url)
    end  

    if @translation.blank?
      tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to submit an empty translation")
      trfe("Your translation was empty and was not accepted")
      return redirect_to(@source_url)
    end
    
    unless @translation.uniq?
      tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to submit an identical translation")
      trfe("There already exists such translation for this phrase. Please vote on it instead or suggest an elternative translation.")
      return redirect_to(@source_url)
    end
    
    unless @translation.clean?
      tr8n_current_translator.used_abusive_language!
      trfe("Your translation contains prohibited words and will not be accepted")
      return redirect_to(@source_url)
    end

    @translation.save_with_log!(tr8n_current_translator)
    @translation.reset_votes!(tr8n_current_translator)

    redirect_to(@source_url)
  end
  
  # generates phrase context rules permutations
  def permutate
    translation_key = Tr8n::TranslationKey.find(params[:translation_key_id])
    source_url = params[:source_url] || request.env['HTTP_REFERER']
    
    unless request.post?
      trfe("Please use a translator window for submitting translations")
      return redirect_to(source_url)
    end

    new_translations = translation_key.generate_rule_permutations(tr8n_current_language, tr8n_current_translator, params[:dependencies])
    if params[:dependencies].blank?
      trfe("You did not specified any context rules for this phrase.")
    elsif new_translations.nil? or new_translations.empty?
      trfn("The context rules you specified already exist. Please provide a translation for each context rule.")
    else
      trfn("All possible combinations of the context rules for this phrase have been generated. Please provide a translation for each context rule.")
    end  
    
    redirect_to(:controller => "/tr8n/phrases", :action => :view, :translation_key_id => translation_key.id, :grouped_by => :context)
  end
  
  # ajax based method - collects votes for a translation
  def vote
    translation = Tr8n::Translation.find(params[:translation_id])
    translation.vote!(tr8n_current_translator, params[:vote])
    translation_key = translation.translation_key

    # this is called from page translations page
    if params[:short_version] == "true"
      return render(:text => translation.rank_label) 
    end
    
    # this is called from the inline translator with reordering the translations based on ranks
    translations = translation_key.inline_translations_for(tr8n_current_language)
    render(:partial => '/tr8n/common/translation_votes', :locals => {:translation_key => translation_key, :translations => translations, :section_key => ""})
  end

  # list of translations    
  def index
    @translations = Tr8n::Translation.for_params(params).order("created_at desc, rank desc").page(page).per(per_page)
  end

  # ajax based method for updating individual translations
  def update
    @translation = Tr8n::Translation.find(params[:translation_id])
    mode = params[:mode] || :view
    
    if request.post?
      mode = :view
      unless params[:label].strip.blank?
        @translation.label = sanitize_label(params[:label])
        
        unless @translation.can_be_edited_by?(tr8n_current_translator)
          tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to update translation that is not his")
          @translation.label = "You are not authorized to edit this translation as you were not it's creator"
          mode = :edit
        else 
          if @translation.blank?
            tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to submit an empty translation")
            @translation.label = "Your translation was empty and was not accepted"
            mode = :edit
          elsif not @translation.uniq?
            tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to submit an identical translation")
            @translation.label = "There already exists such translation for this phrase. Please vote on it instead or suggest an elternative translation."
            mode = :edit
          elsif not @translation.clean?
            tr8n_current_translator.used_abusive_language!
            @translation.label = "Your translation contains prohibited words and will not be accepted. Click on cancel and try again."
            mode = :edit
          else
            @translation.save_with_log!(tr8n_current_translator)
            @translation.reset_votes!(tr8n_current_translator)
          end
        end

      end
    end
    render(:partial => "translation", :locals => {:language => tr8n_current_language, :translation => @translation, :mode => mode.to_sym})
  end  
  
  # deletes an individual translation
  def delete
    translation = Tr8n::Translation.find(params[:translation_id])
    translator = translation.translator

    unless translation.can_be_deleted_by?(tr8n_current_translator)
      tr8n_current_translator.tried_to_perform_unauthorized_action!("tried to delete translation that is not his")
      trfe("You are not authorized to delete this translation as you were not it's creator")
    else
      translation.destroy_with_log!(tr8n_current_translator)
      translator.update_rank!
      trfn("Your translation has been removed.")
    end
    
    redirect_to(:controller => "/tr8n/phrases", :action => :view, :translation_key_id => translation.translation_key.id, :section_key => @section_key)
  end
    
private

  def parse_rules
    return nil unless params[:has_rules] == "true" and params[:rules] 
    
    rulz = []
    params[:rules].keys.each do |token|
      next unless params[:rules][token][:selected] == "true" 
      rulz << {:token => token, :rule_id => params[:rules][token][:rule_id]}
    end
    rulz
  end

end