class PHire
  include Mongoid::Document
  include Mongoid::Timestamps

  INTERVALS = ["week", "month"]
  field :date, type: Date
  field :start_time, type: DateTime
  field :end_time, type: DateTime
  field :hiring_person_email
  field :hiring_person_number
  field :hiring_person_id
  field :hiring_person_name
  field :reason_for_hire
  field :tmp_reason_for_hire, type: String, default: "" # store reason text from custom fields
  field :note_for_hire
  field :property_day_setting_id
  field :passed, type: Boolean, default: false
  field :recurring, type: Boolean, :default => false
  field :recurring_end_date, type: DateTime
  field :recurring_interval
  field :organization
  field :person_in_charge
  field :tel_of_person_in_charge
  field :department
  field :contact_person
  field :tel_of_contact_person
  field :mobile_phone_of_contact_person
  field :contact_person_Email
  field :contact_person_department
  belongs_to :property
  has_many :p_hire_field_values, :autosave => true, :dependent => :destroy
  accepts_nested_attributes_for :p_hire_field_values, allow_destroy: true
  def property_day_setting
    PropertyDaySetting.find(self.property_day_setting_id) rescue nil
  end
  def as_json(options = {})
    startt = self.start_time
    endt = self.end_time
    recurring = false
    datet = self.date
    if options[:startt]
      startt = options[:startt]
    end
    if options[:endt]
      endt = options[:endt]
    end
    if options[:datet]
      datet = options[:datet]
    end
    if options[:recurring]
      recurring = options[:recurring]
    end
    {
      :id => self.id.to_s,
      :title => (self.reason_for_hire.to_s + " "+ self.tmp_reason_for_hire.to_s).html_safe,
      :hiring_person_id => self.hiring_person_id,
      :hiring_person_name => self.hiring_person_name,
      :note => self.note_for_hire || "",
      :start => startt.to_json.gsub('"',''),
      :end => endt.to_json.gsub('"',''),
      :allDay => (self.end_time - self.start_time >= 1),
      :color => (self.passed ? "#3788d8" : "#FC4040"),
      :error_message => (self.passed ? nil : "Not approved"),
      :s_id=>self.property_day_setting_id.to_s,
      :date=>datet,
      :recurring=>recurring
    }
  end

  def period
    return self.start_time.strftime("%y-%m-%d %H:%M") + " ~ " + self.end_time.strftime("%y-%m-%d %H:%M")
  end

  def hirer_name
    return self.hiring_person_name.nil? ? (self.hiring_person_profile.name rescue "") : self.hiring_person_name
  end

  def hiring_person_profile
    return MemberProfile.find(self.hiring_person_id) rescue nil
  end

  def self.monthly_event(start_date,end_date,property_id,date_only=false)
    events = self.where(:property_id => property_id, :recurring => false).any_of(:start_time.gte => start_date, :end_time.gte => start_date).and(:start_time.lte => end_date).asc(:start_time)
    if date_only
      events = events.where(:date.ne=>nil)
    end
    events
  end
  def self.convert_datetime(time)
    if time.class == Time
      return time.to_datetime
    elsif time.class == DateTime
      return time
    elsif time.class == String
      return DateTime.parse(time)
    else
      return Time.at(time).to_datetime #time is seconds
    end
  end
  def self.recurring_event(start_date,end_date,property_id,date_only=false)
    start_date = convert_datetime(start_date)
    end_date = convert_datetime(end_date)
    @property = Property.find(property_id) rescue nil
    @recurring = []
    if @property != nil
      unavailable = @property.set_unavailibility && !@property.weekdays.empty? && !@property.start_date.nil? && !@property.end_date.nil?
      unavailable_start_date = @property.start_date
      unavailable_end_date = @property.end_date
      unavailable_start_time = @property.start_time.to_s
      unavailable_end_time = @property.end_time.to_s
      unavailable_start_date = DateTime.parse(unavailable_start_date.strftime("%Y-%m-%d " + unavailable_start_time.to_s + Time.zone.to_s)) rescue nil
      unavailable_end_date = DateTime.parse(unavailable_end_date.strftime("%Y-%m-%d " + unavailable_end_time.to_s + Time.zone.to_s)) rescue nil
      unavailable_weekdays = @property.weekdays.collect{|w| w.to_i}
      @recurring_events = self.where(:property_id => property_id, :recurring_end_date.gte => start_date)
      if date_only
        @recurring_events = @recurring_events.where(:date.ne=>nil)
      end
      @recurring_events.each do |re|
        datet = re.date
        interval = 1.send(re.recurring_interval) rescue 0
        if interval != 0
          @start_date = re.start_time
          recurring_end_date = re.recurring_end_date
          new_end_date = [recurring_end_date,end_date].min
          @end_date = re.end_time
          if @start_date < start_date
            add_interval = nil
            if re.recurring_interval == "week"
              add_interval = ((start_date - @start_date).to_i / 7).send("week")
            else
              add_interval = ((start_date.year * 12 + start_date.month) - (@start_date.year * 12 + @start_date.month) - 1).send("month")
            end
            @start_date += add_interval
            @end_date += add_interval
          end
          while @start_date <= new_end_date do
            if unavailable && (unavailable_start_date <= @start_date) && (unavailable_end_date >= @end_date) && !((@start_date.strftime("%w").to_i .. @end_date.strftime("%w").to_i).to_a & unavailable_weekdays).empty?
              startt = DateTime.parse(@start_date.strftime("%Y-%m-%d " + unavailable_start_time + Time.zone.to_s))
              endt = DateTime.parse(@end_date.strftime("%Y-%m-%d " + unavailable_end_time + Time.zone.to_s))
              if !((startt..endt) & (@start_date..@end_date)).blank?
                break if (@start_date + interval) > new_end_date
                next
              end
            end
            if @start_date >= start_date
              @recurring << re.as_json({:startt=>@start_date,:endt=>@end_date,:datet=>datet})
            end
            @start_date += interval
            @end_date += interval
            datet += interval if datet
          end
        end
      end
    end
    @recurring
  end

  def time_iterate(&block)
    start_time = self.start_time
    end_time = self.end_time
    recurring_end_date = self.recurring_end_date
    case self.recurring_interval
    when "week"
      step_interval = 1.week
    when "month"
      step_interval = 1.month
    end
    begin
      yield(start_time, end_time)
      end_time += step_interval
    end while (start_time += step_interval) <= recurring_end_date
  end

end