class Property
  include Mongoid::Document
  include Mongoid::Timestamps
  include OrbitTag::Taggable
  include OrbitCategory::Categorizable
  include Slug

  field :title, as: :slug_title, :localize =>  true
  field :property_usage, :localize => true
  field :note, :localize => true
  field :property_number
  field :can_be_hired, type: Boolean, default: true
  field :purchase_date, type: DateTime
  field :owners, type: Array, :default => []
  field :other_owner
  field :owner_email
  field :owner_phone
  field :price
  field :other_location
 
  mount_uploader :image, ImageUploader 

  # unavailibility fields

  field :set_unavailibility, type: Boolean, default: false
  field :start_time
  field :end_time
  field :weekdays, type: Array, default: []
  field :start_date, type: DateTime
  field :end_date, type: DateTime
  field :description, :localize => true
  field :unavailibility_note, :localize => true 

  belongs_to :property_location
  has_many :p_hires
  has_many :hire_email_sets, :autosave => true, :dependent => :destroy, :inverse_of => :property
  accepts_nested_attributes_for :hire_email_sets, :allow_destroy => true
  WEEKDAYS = [
    "Sunday",
    "Monday",
    "Tuesday",
    "Wednesday",
    "Thursday",
    "Friday",
    "Saturday"
  ]

  def get_location_name
    return self.property_location.nil? ? self.other_location : self.property_location.title
  end

  def owner_profiles
    MemberProfile.find(self.owners) rescue []
  end

  def is_available_for_hire?(stime, etime)
    return true if self.set_unavailibility == false
    return true if self.weekdays.empty?
    return true if !self.start_date.nil? && (self.start_date > stime && self.start_date > etime)
    return true if !self.end_date.nil? && self.end_date < stime
    startt = self.start_date.nil? ? self.created_at : self.start_date
    endt = self.end_date.nil? && !startt.nil? ? (startt + 5.years) : self.end_date
    weekdays = self.weekdays.collect{|w| w.to_i}
    if !startt.nil?
      common_dates = (startt..endt) & (stime..etime)
      return true if common_dates.nil?
      time_weekdays = []
      Property.time_iterate(common_dates.min, common_dates.max, 1.day) do |t|
        time_weekdays << t.wday
      end
      time_weekdays.uniq!
      weekdays = weekdays & time_weekdays
      return true if weekdays.blank?
      startt = DateTime.parse(stime.strftime("%Y-%m-%d " + self.start_time + Time.zone.to_s))
      endt = DateTime.parse(etime.strftime("%Y-%m-%d " + self.end_time + Time.zone.to_s))
      common_dates = (startt..endt) & (stime..etime)
      if common_dates.nil?
        return true 
      else
        return false
      end
    end
  end

  def is_already_hired?(stime, etime, interval, recurring_end_date)
    phires = self.p_hires
    bookings_count = phires.where(:start_time.lte => stime,:end_time.gte => stime,:recurring => false).count
                      + phires.where(:start_time.gte => stime,:end_time.lte => etime,:recurring => false).count
                        +phires.where(:start_time.lte => etime,:end_time.gte => etime,:recurring => false).count
    available = true
    if bookings_count != 0
      available = false
    end
    if available
      bookings = phires.where(:recurring_end_date.gte => stime, :recurring => true) + phires.where(:recurring => false,:recurring_end_date => nil) + phires.where(:recurring => false,:recurring_end_date.gte => stime)
      case interval
      when 'week'
        d_step = 1.week
      when 'month'
        d_step = 1.month
      else
        d_step = 0
      end
      bookings.each do |booking|
        stime_tp = stime
        etime_tp = etime
        b_interval = booking.recurring_interval
        if (b_interval == 'month' || b_interval == 'week') && booking.recurring_end_date.nil?
          b_interval = nil
        end
        while true
          if b_interval == 'month'
            diff_month = booking.end_time.month - booking.start_time.month
            diff_month = diff_month + 12 if diff_month < 0
            e_month = stime_tp.month + diff_month
            e_year = stime_tp.year + (booking.end_time.year-booking.start_time.year)
            e_month = e_month - 12 if e_month >12
            b_sdata = Time.local(stime_tp.year,stime_tp.month,booking.start_time.day,booking.start_time.hour,booking.start_time.minute).to_datetime
            b_edata = Time.local(e_year,e_month,booking.end_time.day,booking.end_time.hour,booking.end_time.minute).to_datetime
          elsif b_interval == 'week'
            diff_day = booking.end_time - booking.start_time
            if (booking.end_time.wday <= booking.start_time.wday && diff_day>1) || diff_day > 7
              over_one_week = true
            end
            b_sdata_tp = stime_tp - stime_tp.wday.day + booking.start_time.wday.day
            b_sdata = Time.local(b_sdata_tp.year,b_sdata_tp.month,b_sdata_tp.day,booking.start_time.hour,booking.start_time.minute).to_datetime
            if over_one_week && etime_tp.wday <= booking.start_time.wday
              b_sdata = b_sdata - 7.day
            end
            now_diff_day = etime_tp - stime_tp
            if (etime_tp.wday <= stime_tp.wday && now_diff_day>1) || now_diff_day > 7 
              b_sdata = b_sdata + 7.day
            end
            b_edata_tp = b_sdata + (booking.end_time - booking.start_time).to_i.day
            b_edata = Time.local(b_edata_tp.year,b_edata_tp.month,b_edata_tp.day,booking.end_time.hour,booking.end_time.minute).to_datetime
          else
            b_sdata = booking.start_time
            b_edata = booking.end_time
          end
          sdata = stime_tp
          edata = etime_tp
          if etime_tp > booking.start_time
            if (sdata <= b_sdata && edata >= b_sdata) || (sdata >= b_sdata && edata <= b_edata) || (sdata <= b_edata && edata >= b_edata)
                available = false
            end
          end
          stime_tp = stime_tp + d_step
          etime_tp = etime_tp + d_step
          break if recurring_end_date.blank? || d_step==0 || recurring_end_date < stime_tp
        end
        break if available == false
      end
    end
    return available
  end

  def self.time_iterate(start_time, end_time, step, &block)
    begin
      yield(start_time, end_time)
    end while (start_time += step) <= end_time
  end

end