# encoding: utf-8
#
# Redmine - project management software
# Copyright (C) 2006-2013  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 WatchersHelper

  def watcher_tag(object, user, options={})
    ActiveSupport::Deprecation.warn "#watcher_tag is deprecated and will be removed in Redmine 3.0. Use #watcher_link instead."
    watcher_link(object, user)
  end

  ###################modified by liuping, nyan
  def watcher_link(objects, user, options=[])
    return '' unless user && user.logged?
    objects = Array.wrap(objects)

    watched = objects.any? {|object| object.watched_by?(user)}
    @watch_flag = (objects.first.instance_of?(User) or objects.first.instance_of?(Project) or objects.first.instance_of?(Contest) or (objects.first.instance_of?(Bid)))
    css =  @watch_flag ? ([watcher_css(objects), watched ? 'icon ' : 'icon '].join(' ') << options[0].to_s) : 
                                       ([watcher_css(objects), watched ? 'icon icon-fav ' : 'icon icon-fav-off '].join(' ') << options[0].to_s)

    text = @watch_flag ?  
                    (watched ? l(:button_unfollow) : l(:button_follow)) : (watched ? l(:button_unwatch) : l(:button_watch))

    url = watch_path(
      :object_type => objects.first.class.to_s.underscore,
      :object_id => (objects.size == 1 ? objects.first.id : objects.map(&:id).sort)
    )
    method = watched ? 'delete' : 'post'
  
    link_to text, url, :remote => true, :method => method, :class => css
  end
  
  ############## added by linchun  
    def new_watcher_link(objects, user, options=[])
    return '' unless user && user.logged?
    objects = Array.wrap(objects)

    watched = objects.any? {|object| object.watched_by?(user)}
    @watch_flag = (objects.first.instance_of?(User) or objects.first.instance_of?(Project) or (objects.first.instance_of?(Contest))) 
    css =  @watch_flag ? ([watcher_css(objects), watched ? 'icon ' : 'icon '].join(' ') << options[0].to_s) : 
                                       ([watcher_css(objects), watched ? 'icon icon-fav ' : 'icon icon-fav-off '].join(' ') << options[0].to_s)

    text = @watch_flag ?  
                    (watched ? l(:button_unfollow) : l(:button_follow)) : (watched ? l(:button_unwatch) : l(:button_watch))

    url = watch_path(
      :object_type => objects.first.class.to_s.underscore,
      :object_id => (objects.size == 1 ? objects.first.id : objects.map(&:id).sort)
    )
    method = watched ? 'delete' : 'post'
  
    link_to text, url, :remote => true, :method => method, :class => css
  end

  # add by nwb
  # 关注课程
  def new_course_watcher_link(objects, user, options=[])
    return '' unless user && user.logged?
    objects = Array.wrap(objects)

    watched = objects.any? {|object| object.watched_by?(user)}
    @watch_flag = (objects.first.instance_of?(User) or objects.first.instance_of?(Project) or (objects.first.instance_of?(Contest)))
    css =  @watch_flag ? ([watcher_css(objects), watched ? 'icon ' : 'icon '].join(' ') << options[0].to_s) :
        ([watcher_css(objects), watched ? 'icon icon-fav ' : 'icon icon-fav-off '].join(' ') << options[0].to_s)

    text = @watch_flag ?
        (watched ? l(:button_unfollow) : l(:button_follow)) : (watched ? l(:button_unwatch) : l(:button_watch))

    url = watch_path(
        :object_type => objects.first.class.to_s.underscore,
        :object_id => (objects.size == 1 ? objects.first.id : objects.map(&:id).sort)
    )
    method = watched ? 'delete' : 'post'

    link_to text, url, :remote => true, :method => method, :class => css
  end

  # added by fq, modify nyan
  # Somebody may use option params
  def join_in_course(course, user, options=[])
    return '' unless user && user.logged?
    # modify by nwb
    # 主讲教师不允许退出课程
    return '' if user.id == course.tea_id
    joined = user.member_of_course?(course)
    text = joined ? l(:label_exit_course) : l(:label_join_course)
    url_t = join_path(:object_id => course.id)
    url_f = try_join_path(:object_id => course.id)
    method = joined ? 'delete' : 'post'
    if joined
      link_to text, url_t, :remote => true, :method => method, :id => "#{course.id}", :confirm => l(:text_are_you_sure_out), :class => []+options
    else
      link_to text, url_f, :remote => true, :method => method, :id => "#{course.id}", :class => []+options
    end       
  end

  # 用户是否允许加入课程判断
  # add by nwb
  def join_in_course_for_list(course, user, options=[])
    return '' unless user && user.logged?
    # modify by nwb
    # 主讲教师不允许退出课程
    return '' if user.id == course.tea_id
    joined = user.member_of_course?(course)
    text = joined ? l(:label_exit_course) : l(:label_join_course)
    url_t = join_path(:object_id => course.id)
    url_f = try_join_path(:object_id => course.id)
    method = joined ? 'delete' : 'post'
    if joined
      link_to text, url_t, :remote => true, :method => method, :id => "#{course.id}", :confirm => l(:text_are_you_sure_out), :class => []+options
    else
      link_to text, url_f, :remote => true, :method => method, :id => "#{course.id}", :class => []+options
    end       
  end

  #added by bai
  def join_in_contest(bid, user, options=[])
    if bid.reward_type == 2
      return '' unless user && user.logged?
      joined = user.join_in_contest?(bid)
      text = joined ? l(:label_exit_contest) : l(:label_join_contest)
      url_t = join_in_contest_path(:id => bid.id)
      url_f = try_join_in_contest_path(:id => bid.id)
      # url = join_in_contest_path(:id => bid.id)
      method = joined ? 'delete' : 'post'
      if joined
        link_to text, url_t, :remote => true, :method => method, :id => "#{bid.id}", :confirm => l(:text_are_you_sure_out), :class => []+options
      else
        link_to text, url_f, :remote => true, :method => method, :id => "#{bid.id}", :class => []+options
      end
    end      
  end
  ##new add by linchun
  def join_in_contest(contest, user, options=[])
      return '' unless user && user.logged?
      joined = user.join_in_contest?(contest)
      text = joined ? l(:label_exit_contest) : l(:label_join_contest)
      url_t = join_in_contest_path(:id => contest.id)
      url_f = try_join_in_contest_path(:id => contest.id)
      # url = join_in_contest_path(:id => contest.id)
      method = joined ? 'delete' : 'post'
      if joined
        link_to text, url_t, :remote => true, :method => method, :id => "#{contest.id}", :confirm => l(:text_are_you_sure_out), :class => []+options
      else
        link_to text, url_f, :remote => true, :method => method, :id => "#{contest.id}", :class => []+options
      end    
  end
  
  # liuwanwei 的需求， 新竞赛
  # 新路由命名为 competition
  def join_in_competition(competition, user)
      return '' unless user && user.logged?
      joined = JoinInCompetition.where('competition_id = ? AND user_id = ?', competition.id, user.id).count>0
      text = joined ? l(:label_exit_contest) : l(:label_join_contest)
      url_f = new_join_contests_path(:id => competition.id) 
      url_t = unjoin_in_contest_contests_path(:id => competition.id) 
      method = joined ? 'delete' : 'post'
      if joined
        # 退出竞赛用
        link_to text, url_t, :remote => true, :method => method, :id => "#{competition.id}", :confirm => l(:text_are_you_sure_out)
      else
        # 加入竞赛用
        link_to text, url_f, :remote => true, :method => method, :id => "#{competition.id}"
      end    
  end
  
  # Returns the css class used to identify watch links for a given +object+
  def watcher_css(objects)
    objects = Array.wrap(objects)
    id = (objects.size == 1 ? objects.first.id : 'bulk')
    "#{objects.first.class.to_s.underscore}-#{id}-watcher"
  end

  # Returns a comma separated list of users watching the given object
  def watchers_list(object)
    remove_allowed = User.current.allowed_to?("delete_#{object.class.name.underscore}_watchers".to_sym, object.project)
    content = ''.html_safe
    lis = object.watcher_users.collect do |user|
      s = ''.html_safe
      s << avatar(user, :size => "16").to_s
      s << link_to_user(user, :class => 'user')
      if remove_allowed
        url = {:controller => 'watchers',
               :action => 'destroy',
               :object_type => object.class.to_s.underscore,
               :object_id => object.id,
               :user_id => user}
        s << ' '
        s << link_to(image_tag('delete.png'), url,
                     :remote => true, :method => 'delete', :class => "delete")
      end
      content << content_tag('li', s, :class => "user-#{user.id}")
    end
    content.present? ? content_tag('ul', content, :class => 'watchers') : content
  end

  def watchers_checkboxes(object, users, checked=nil)
    users.map do |user|
      c = checked.nil? ? object.watched_by?(user) : checked
      tag = check_box_tag 'issue[watcher_user_ids][]', user.id, c, :id => nil
      content_tag 'label', "#{tag} #{h(user)}".html_safe,
                  :id => "issue_watcher_user_ids_#{user.id}",
                  :class => "floating"
    end.join.html_safe
  end

  def applied_css(project)
    id = project.id
    "#{project.class.to_s.underscore}-#{id}-applied"
  end

  def applied_link(project, user, options=[])
    return '' unless user && user.logged?
    applied = project.applied_projects.find_by_user_id(user.id)
    text = applied ? l(:label_unapply_project) : l(:label_apply_project)

    @applied_flag = project.instance_of?(Project)
    css =  @applied_flag ? ([applied_css(project), applied ? 'icon ' : 'icon '].join(' ') << options[0].to_s) :
        ([applied_css(project), applied ? 'icon icon-applied ' : 'icon icon-applied-off '].join(' ') << options[0].to_s)
    if applied
      appliedid =  applied.id
    end
          url = appliedproject_path(
        :id=>appliedid,
        :user_id => user.id,
        :project_id => project.id
    )
    method = applied ? 'delete' : 'post'

    link_to text, url, :remote => true, :method => method ,:class=>css
  end

 end