#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# 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.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

module TimelinesHelper
  unloadable

  def icon_for_color(color, options = {})
    return unless color

    options = options.merge(class: 'timelines-phase ' + options[:class].to_s,
                            style: "background-color: #{color.hexcode};" + options[:style].to_s)

    content_tag(:span, ' ', options)
  end

  def parent_id_select_tag(form, planning_element)
    available_parents = planning_element.project.planning_elements.find(:all, order: 'COALESCE(parent_id, id), parent_id')
    available_parents -= [planning_element]

    available_options = available_parents.map do |pe|
      texts = (pe.ancestors.reverse << pe).map { |a| "*#{a.id} #{a.subject}" }
      [texts.join(right_pointing_arrow), pe.id]
    end

    available_options.unshift(['', ''])

    form.select :parent_id, available_options
  end

  def right_pointing_arrow
    ' ▸ '
  end

  def format_date(date, options = nil)
    text = super(date)

    if options.present?
      content_tag(:span, text, options)
    else
      text
    end
  end

  def options_for_colors(colored_thing)
    s = content_tag(:option, '')
    colored_thing.available_colors.each do |c|
      options = {}
      options[:value] = c.id
      options[:selected] = 'selected' if c.id == colored_thing.color_id

      options[:style] = "background-color: #{c.hexcode}; color: #{c.text_hexcode}"

      s << content_tag(:option, h(c.name), options)
    end
    s
  end

  def options_for_timeunits(selected = nil)
    options_for_select([[l('timelines.filter.time_relative.days'), 0],
                        [l('timelines.filter.time_relative.weeks'), '1'],
                        [l('timelines.filter.time_relative.months'), '2']],
                       selected)
  end

  def options_for_project_types
    ProjectType.all.map { |t| [t.name, t.id] }
  end

  def visible_parent_project(project)
    parent = project.parent

    while parent.present? && !parent.visible?
      parent = parent.parent
    end

    parent
  end

  # TODO Refactoring
  def header_tags
    %{
      <style type='text/css'>
        #content table.issues td.center,
        #content table th.center {
          text-align: center;
        }
        .contextual .new-element {
          background: url("../images/add.png") no-repeat scroll 6px center transparent;
          padding-left: 16px;
          font-size: 11px;
        }

        .timelines-contextual-fieldset {
          float:right;
          white-space:nowrap;
          margin-right:24px;
          padding-left:10px;
        }

        .timelines-milestone, .timelines-phase {
          border: 1px solid #000;
          display: inline-block;
          height: 12px;
          width: 12px;
          margin-bottom: -3px;
          margin-right: 5px;
        }
        .timelines-milestone {
          transform: rotate(45deg);
        }
        .timelines-phase {
          border-radius: 4px;
        }
        .timelines-attributes th {
          width: 17%;
        }
        .timelines-attributes td {
          width: 33%;
        }
        #content .meta table.timelines-attributes th,
        #content .meta table.timelines-attributes td {
          padding-top: 0.5em;
          padding-bottom: 0.5em;
        }
        #content table.timelines-rep,
        table.timelines-dates {
          width: 100%;
        }
        #content table.timelines-dates th {
          text-align: left;
          padding-left: 1em;
          padding-right: 1em;
        }
        table.timelines-dates td {
          padding: 1em;
        }

        table.timelines-dates tbody.timelines-current-dates td {
          font-weight: bold;
          height: 3em;
          vertical-align: middle;
          padding: 0 1em;
        }

        #content table.timelines-pt td, #content table.timelines-pt th,
        #content table.timelines-pet td, #content table.timelines-pet th {
          border: 1px solid #E6E6E6;
          padding: 6px;
          position: relative;
          text-align: left;
          vertical-align: top;
        }

        #content table.timelines-pt td.timelines-pt-reorder,
        #content table.timelines-pt td.timelines-pt-allows_association,
        #content table.timelines-pt td.timelines-pt-actions,
        #content table.timelines-pet td.timelines-pet-color,
        #content table.timelines-pet td.timelines-pet-reorder,
        #content table.timelines-pet td.timelines-pet-is_default,
        #content table.timelines-pet td.timelines-pet-in_aggregation,
        #content table.timelines-pet td.timelines-pet-is_milestone,
        #content table.timelines-pet td.timelines-pet-actions {
          width: 12%;
          text-align: center;
        }

        .timelines-pet-properties,
        .timelines-reporting-properties p {
          margin-bottom: 1em;
        }
        .timelines-pet-properties p,
        .timelines-reporting-properties p {
          margin-left: 1em;
          line-height: 2em;
        }
        .timelines-pet-properties label,
        .timelines-pt-properties label {
          display: inline-block;
          width: 10em;
        }
        .timelines-color-properties-preview {
          margin-left: -22px;
        }
        .timelines-reporting-properties .timelines-value,
        .timelines-pet-properties .timelines-value,
        .timelines-pt-properties .timelines-value {
          margin-left: 0.4em;
        }

        .contextual.timelines-for_previous_heading {
          margin-top: -2.6em;
        }
      </style>

      <script>
        jQuery(function () {
          jQuery('.timelines-x-update-color').each(function(idx, element) {
            var preview, input, func, target;

            preview = jQuery(this);
            target  = preview.data('target')
            if(target) {
              input = jQuery(target);
            } else {
              input = preview.next('input');
            }

            if (input.length == 0) {
              return;
            }

            func = function () {
              preview.css('background-color', input.val());
            };

            input.keyup(func).change(func).focus(func);
            func();
          });
        });
      </script>
    }.html_safe
  end

  def none_option
    result = [[l('timelines.filter.noneSelection'), -1]]
  end

  def filter_select_i18n_array_with_index_and_none(array, i18n_prefix)
    result = none_option
    index = -1
    result += array.map do |t|
      index += 1
      [l(i18n_prefix + t), index]
    end
  end

  def filter_select_with_none(collection, text, value)
    result = none_option
    result += filter_select(collection, text, value)
  end

  def filter_select(collection, text, value)
    collection.map do |t|
      [t.send(text), t.send(value)]
    end
  end

  def resolve_with_none_option(_const, collection)
    collection
  end

  def list_to_select_object_with_none(collection)
    collection = collection.map do |t|
      {
        name: t,
        id: t
      }
    end
    collection.unshift(
      name: l('timelines.filter.noneElement'),
      id: -1
    )
  end

  def internationalized_columns_select_object(collection)
    collection.map do |t|
      {
        name: l('timelines.filter.column.' + t),
        id: t
      }
    end
  end

  def internationalized_columns_select(collection)
    collection.map do |t|
      [l('timelines.filter.column.' + t), t]
    end
  end

  # Push timeline data to view as JSON via gon

  include Gon::GonHelpers

  def visible_timeline_paths(_visible_timelines = [])
    @visible_timelines.inject({}) do |timeline_paths, timeline|
      timeline_paths.merge(timeline.id => { path: project_timeline_path(@project, timeline) })
    end
  end

  def push_visible_timeline_paths(visible_timelines)
    gon.timelines = visible_timeline_paths visible_timelines
  end

  def push_current_timeline_id(id)
    gon.current_timeline_id = id
  end

  def push_timeline_options(timeline)
    project_id = timeline.project.identifier

    gon.timeline_options ||= {}
    gon.timeline_options[timeline.id] = timeline.options.reverse_merge(project_id: project_id)
  end

  def timeline_options
    OpenStruct.new @timeline.options
  end
end