# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-2022  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 VersionsHelper

  def version_anchor(version)
    if @project == version.project
      anchor version.name
    else
      anchor "#{version.project.try(:identifier)}-#{version.name}"
    end
  end

  def version_filtered_issues_path(version, options = {})
    options = {:fixed_version_id => version, :set_filter => 1}.merge(options)
    project =
      case version.sharing
      when 'tree'
        if version.project && version.project.root.visible? && User.current.allowed_to?(:view_issues, version.project.root)
          version.project.root
        else
          nil
        end
      when 'system'
        nil
      else
        version.project
      end
    if project
      project_issues_path(project, options)
    else
      issues_path(options)
    end
  end

  STATUS_BY_CRITERIAS = %w(tracker status priority author assigned_to category)

  def render_issue_status_by(version, criteria)
    criteria = 'tracker' unless STATUS_BY_CRITERIAS.include?(criteria)
    h = Hash.new {|k, v| k[v] = [0, 0]}
    begin
      # Total issue count
      version.visible_fixed_issues.group(criteria).count.each {|c, s| h[c][0] = s}
      # Open issues count
      version.visible_fixed_issues.open.group(criteria).count.each {|c, s| h[c][1] = s}
    rescue ActiveRecord::RecordNotFound
      # When grouping by an association, Rails throws this exception if there's no result (bug)
    end
    # Sort with nil keys in last position
    sorted_keys =
      h.keys.sort do |a, b|
        if a.nil?
          1
        else
          b.nil? ? -1 : a <=> b
        end
      end
    counts =
      sorted_keys.collect do |k|
        {:group => k, :total => h[k][0], :open => h[k][1], :closed => (h[k][0] - h[k][1])}
      end
    max = counts.collect {|c| c[:total]}.max
    render :partial => 'issue_counts', :locals => {:version => version, :criteria => criteria, :counts => counts, :max => max}
  end

  def status_by_options_for_select(value)
    options_for_select(STATUS_BY_CRITERIAS.collect {|criteria| [l("field_#{criteria}".to_sym), criteria]}, value)
  end

  def link_to_new_issue(version, project)
    if version.open? && User.current.allowed_to?(:add_issues, project)
      trackers = Issue.allowed_target_trackers(project)

      unless trackers.empty?
        issue = Issue.new(:project => project)
        new_issue_tracker = trackers.detect do |tracker|
          issue.tracker = tracker
          issue.safe_attribute?('fixed_version_id')
        end
      end

      if new_issue_tracker
        attrs = {
          :tracker_id => new_issue_tracker,
          :fixed_version_id => version.id
        }
        link_to l(:label_issue_new), new_project_issue_path(project, :issue => attrs, :back_url => version_path(version)), :class => 'icon icon-add'
      end
    end
  end
end