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# encoding: utf-8

#

# Redmine - project management software

# Copyright (C) 2006-2012  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module CustomFieldsHelper

  def custom_fields_tabs

    CustomField::CUSTOM_FIELDS_TABS

  end

  # Return custom field html tag corresponding to its format

  def custom_field_tag(name, custom_value)        

    custom_field = custom_value.custom_field

    field_name = "#{name}[custom_field_values][#{custom_field.id}]"

    field_name << "[]" if custom_field.multiple?

    field_id = "#{name}_custom_field_values_#{custom_field.id}"

    tag_options = {:id => field_id, :class => "#{custom_field.field_format}_cf"}

    field_format = Redmine::CustomFieldFormat.find_by_name(custom_field.field_format)

    case field_format.try(:edit_as)

    when "date"

      text_field_tag(field_name, custom_value.value, tag_options.merge(:size => 10)) +

      calendar_for(field_id)

    when "text"

      text_area_tag(field_name, custom_value.value, tag_options.merge(:rows => 3))

    when "bool"

      hidden_field_tag(field_name, '0') + check_box_tag(field_name, '1', custom_value.true?, tag_options)

    when "list"

      blank_option = ''.html_safe

      unless custom_field.multiple?

        if custom_field.is_required?

          unless custom_field.default_value.present?

            blank_option = content_tag('option', "--- #{l(:actionview_instancetag_blank_option)} ---", :value => '')

          end

        else

          blank_option = content_tag('option')

        end

      end

      s = select_tag(field_name, blank_option + options_for_select(custom_field.possible_values_options(custom_value.customized), custom_value.value),

        tag_options.merge(:multiple => custom_field.multiple?))

      if custom_field.multiple?

        s << hidden_field_tag(field_name, '')

      end

      s

    else

      text_field_tag(field_name, custom_value.value, tag_options)

    end

  end

  # Return custom field label tag

  def custom_field_label_tag(name, custom_value, options={})

    required = options[:required] || custom_value.custom_field.is_required?

    content_tag "label", h(custom_value.custom_field.name) +

      (required ? " <span class=\"required\">*</span>".html_safe : ""),

      :for => "#{name}_custom_field_values_#{custom_value.custom_field.id}"

  end

  # Return custom field tag with its label tag

  def custom_field_tag_with_label(name, custom_value, options={})

    custom_field_label_tag(name, custom_value, options) + custom_field_tag(name, custom_value)

  end

  def custom_field_tag_for_bulk_edit(name, custom_field, projects=nil)

    field_name = "#{name}[custom_field_values][#{custom_field.id}]"

    field_name << "[]" if custom_field.multiple?

    field_id = "#{name}_custom_field_values_#{custom_field.id}"

    tag_options = {:id => field_id, :class => "#{custom_field.field_format}_cf"}

    field_format = Redmine::CustomFieldFormat.find_by_name(custom_field.field_format)

    case field_format.try(:edit_as)

      when "date"

        text_field_tag(field_name, '', tag_options.merge(:size => 10)) +

        calendar_for(field_id)

      when "text"

        text_area_tag(field_name, '', tag_options.merge(:rows => 3))

      when "bool"

        select_tag(field_name, options_for_select([[l(:label_no_change_option), ''],

                                                   [l(:general_text_yes), '1'],

                                                   [l(:general_text_no), '0']]), tag_options)

      when "list"

        options = []

        options << [l(:label_no_change_option), ''] unless custom_field.multiple?

        options << [l(:label_none), '__none__'] unless custom_field.is_required?

        options += custom_field.possible_values_options(projects)

        select_tag(field_name, options_for_select(options), tag_options.merge(:multiple => custom_field.multiple?))

      else

        text_field_tag(field_name, '', tag_options)

    end

  end

  # Return a string used to display a custom value

  def show_value(custom_value)

    return "" unless custom_value

    format_value(custom_value.value, custom_value.custom_field.field_format)

  end

  # Return a string used to display a custom value

  def format_value(value, field_format)

    if value.is_a?(Array)

      value.collect {|v| format_value(v, field_format)}.compact.sort.join(', ')

    else

      Redmine::CustomFieldFormat.format_value(value, field_format)

    end

  end

  # Return an array of custom field formats which can be used in select_tag

  def custom_field_formats_for_select(custom_field)

    Redmine::CustomFieldFormat.as_select(custom_field.class.customized_class.name)

  end

  # Renders the custom_values in api views

  def render_api_custom_values(custom_values, api)

    api.array :custom_fields do

      custom_values.each do |custom_value|

        attrs = {:id => custom_value.custom_field_id, :name => custom_value.custom_field.name}

        attrs.merge!(:multiple => true) if custom_value.custom_field.multiple?

        api.custom_field attrs do

          if custom_value.value.is_a?(Array)

            api.array :value do

              custom_value.value.each do |value|

                api.value value unless value.blank?

              end

            end

          else

            api.value custom_value.value

          end

        end

      end

    end unless custom_values.empty?

  end

end