class SelectedCourse
	include Mongoid::Document
	include Mongoid::Timestamps
	include OrbitModel::Status
	include MemberHelper
	include Slug

	field :course_id
  field :course_title, as: :slug_title, type: String, localize: true
  field :course_objective, localize: true
  field :year, type: Integer
  field :other_course_url, type: String, default: ""
  has_many :selected_course_syllabus_files, :dependent => :destroy, :autosave => true
  has_many :selected_course_progress_files, :dependent => :destroy, :autosave => true
  has_many :selected_course_activity_files, :dependent => :destroy, :autosave => true
  has_many :selected_course_multimedia_files, :dependent => :destroy, :autosave => true
  has_many :selected_course_material_files, :dependent => :destroy, :autosave => true
  has_many :selected_course_supplement_files, :dependent => :destroy, :autosave => true
  has_many :selected_course_evaluation_files, :dependent => :destroy, :autosave => true

  belongs_to :selected_course_semester
  belongs_to :selected_course_category

  accepts_nested_attributes_for :selected_course_syllabus_files, :allow_destroy => true
  accepts_nested_attributes_for :selected_course_progress_files, :allow_destroy => true
  accepts_nested_attributes_for :selected_course_activity_files, :allow_destroy => true
  accepts_nested_attributes_for :selected_course_multimedia_files, :allow_destroy => true
  accepts_nested_attributes_for :selected_course_material_files, :allow_destroy => true
  accepts_nested_attributes_for :selected_course_supplement_files, :allow_destroy => true
  accepts_nested_attributes_for :selected_course_evaluation_files, :allow_destroy => true

  belongs_to :member_profile
  index({year: -1, _id: -1}, { unique: false, background: false })
  scope :sort_year, ->{ order_by(:year=>'desc', :id => 'desc') }
	scope :sort_for_frontend, ->{ where(:is_hidden=>false).order_by(:year=>'desc', :id => 'desc') }
  before_save do |record|
    course = record.course
    if record.new_record?
      if course
        record.course_title = course.title
        record.year = course.year
        if record.class.where(:course_id=>course.id,:member_profile_id=>record.member_profile_id,:id.ne=>record.id).count != 0
          false
        else
          if course && !course.student_ids.include?(record.member_profile_id.to_s)
            Course.where(:id=>course_id).update_all(:student_ids=>course.student_ids.push(record.member_profile_id.to_s))
          end
          true
        end
      end
    elsif( course.student_ids.include?(record.member_profile_id.to_s) rescue false)
      true
    elsif course
      record.course_title = course.title
      record.year = course.year
      if self.member_profile_id_changed?
        new_student_ids = course.student_ids
        if self.member_profile_id_was.nil?
          new_student_ids.push(record.member_profile_id.to_s)
        else
          new_student_ids.delete(self.member_profile_id_was.to_s)
          new_student_ids.push(record.member_profile_id.to_s)
        end
        Course.where(:id=>course_id).update_all(:student_ids=>new_student_ids)
        self.member_profile = MemberProfile.find(self.member_profile_id) rescue nil
      end
    end
  end

  before_destroy do |record|
    course = record.course
    if course
      new_student_ids = course.student_ids
      if new_student_ids.include? record.member_profile_id.to_s
        new_student_ids.delete(record.member_profile_id.to_s)
        Course.where(:id=>course_id).update_all(:student_ids=>new_student_ids)
      end
    end
  end
  def course_url
    course_object = Course.find(course_id) rescue nil
    page = Page.where(:module=>"personal_course").first
    return ("/#{I18n.locale}"+page.url+'/'+course_object.to_param).gsub('//','/') rescue "#" 
  end
  def course
    course = Course rescue nil
    if course
        Course.find(course_id) rescue nil
    else
        return nil
    end
  end
	def self.get_plugin_datas_to_member(datas)

    fields_to_show = [
      "selected_course_category",
      "course_title",
      "course_url",
      "year",
    ]

    fields_to_remove = []
    fields_not_remove = ["course_url"]
    course_fields = ["selected_course_category","selected_course_semester","selected_course_syllabus_file", "selected_course_progress_file", "selected_course_activity_file", "selected_course_multimedia_file", "selected_course_material_file", "selected_course_supplement_file", "selected_course_evaluation_file"]
  	pd_title = []

    fields_to_show.each do |t|
      if course_fields.include? t
        if (self.course.fields[t].type.to_s == "String" || self.course.fields[t].type.to_s == "Object" rescue false)
          fields_to_remove << t if (datas.course.where(t.to_sym.ne => nil, t.to_sym.ne => "").count == 0 rescue false)
        else
          fields_to_remove << t if (datas.course.where(t.to_sym.ne => nil).count == 0 rescue false)
        end
      else
        if !fields_not_remove.include?(t)
  	      if (self.fields[t].type.to_s == "String" || self.fields[t].type.to_s == "Object" rescue false)
  	        fields_to_remove << t if (datas.where(t.to_sym.ne => nil, t.to_sym.ne => "").count == 0 rescue false)
  	      else
  	        fields_to_remove << t if (datas.where(t.to_sym.ne => nil).count == 0 rescue false)
  	      end
        end
      end
      pd_title <<  {
          "plugin_data_title" => I18n.t("personal_selected_course.#{t}")
        } if !fields_to_remove.include?(t)
    end

    fields_to_show = fields_to_show - fields_to_remove

    plugin_datas = datas.sort_for_frontend.collect.with_index do |p,idx|

      pd_data = []
      fields_to_show.collect do |t|
        if t == "course_title"
          link = OrbitHelper.url_to_plugin_show(p.to_param,'personal_selected_course')
          url_to_plugin_show_blank = OrbitHelper.instance_variable_get(:@url_to_plugin_show_blank)
          tmp_title = p.course_title
          pd_data << { "data_title" => (url_to_plugin_show_blank ? tmp_title : "<a title=\"#{tmp_title}\" href=\"#{link}\" target=\"_blank\">#{tmp_title}") }
        elsif t == "selected_course_category"
          pd_data << {"data_title" => (p.course.course_category.title rescue "")}
        elsif t == "course_url"
          request = OrbitHelper.request
          protocol = ("#{URI(request.referer).scheme}://" rescue request.protocol)
          host_url = protocol+(request.host_with_port)
          course_url = host_url + p.course_url
          pd_data << {"data_title" => "<a title=\"#{p.course_title}\" href=\"#{course_url}\">#{course_url}<a>"}
        else
          pd_data << { "data_title" => p.send(t) }
        end
      end

      {
        "pd_datas" => pd_data,
        "type-sort" => (p.course_category.sort_position.to_i rescue 1000),
        "sort-index" => idx
      }

    end
    plugin_datas = plugin_datas.sort_by{|pd| [pd["type-sort"], pd["sort-index"]]}
    return [pd_title,plugin_datas]   
	end

	def get_plugin_data(fields_to_show)
	    plugin_datas = []
	    fields_to_show.each do |field|
	      plugin_data = self.get_plugin_field_data(field) rescue nil
	      next if plugin_data.blank? or plugin_data['value'].blank?
	      plugin_datas << plugin_data
	    end
	    plugin_datas
	end

  def get_plugin_field_data(field)
    case field
    when "selected_course_category"
      value = self.course.course_category.title rescue ""
    when "selected_course_semester"
      value = self.course.course_semester.title rescue ""
    when "course_url"
      request = OrbitHelper.request
      protocol = ("#{URI(request.referer).scheme}://" rescue request.protocol)
      host_url = protocol+(request.host_with_port)
      if self.course
        course_url = host_url + self.course_url
      else
        course_url = self.other_course_url
      end
      value = "<a title=\"#{self.course_title}\" href=\"#{course_url}\">#{course_url}<a>" rescue ""
    when "selected_course_syllabus_file", "selected_course_progress_file", "selected_course_activity_file", "selected_course_multimedia_file", "selected_course_material_file", "selected_course_supplement_file", "selected_course_evaluation_file"
      files = []
      self.course.send(field.pluralize).each do |file| 
      	if !file.new_record? 
	        url = file.file.url
	        title = (file.title.blank? ? File.basename(file.file.path) : file.title)
	        files << "<li><a href='#{url}'' target='_blank'>#{title}</li>"
	    end
      end
      value = files.join("")
    when "authors"
      path = OrbitHelper.url_to_plugin_show(self.course.member_profile.to_param, 'member') rescue '#'
      value = "<a href='#{path}'>#{self.course.member_profile.name}</a>"
    when "course_student"
      value = self.member_profile.name rescue ""
    else
      value = self.send(field) rescue ""
    end

    value = (value =~ /\A#{URI::regexp(['http', 'https'])}\z/) ? "<a href='#{value}' target='blank'>#{value}</a>" : value
    
    {
      "key"=>field,
      "title_class"=>"course-#{field.gsub('_','-')}-field",
      "value_class"=>"course-#{field.gsub('_','-')}-value",
      "title"=>I18n.t('personal_selected_course.'+field),
      "value"=>value
    }
  end

end