#require 'ruby-rets'
require "rets/version"
require "rets/exceptions"
require "rets/client"
require "rets/http"
require "rets/stream_http"
require "rets/base/core"
require "rets/base/sax_search"
require "rets/base/sax_metadata"

require 'httparty'
require 'json'

# http://rets.solidearth.com/ClientHome.aspx

class CabooseRets::RetsImporter # < ActiveRecord::Base

  @@rets_client = nil   
  @@config = nil

  def self.config
    return @@config
  end

  def self.get_config
    @@config = {
      'url'                 => nil, # URL to the RETS login
      'username'            => nil,
      'password'            => nil,
      'temp_path'           => nil,
      'log_file'            => nil,
      'media_base_url'      => nil
    }
    config = YAML::load(File.open("#{Rails.root}/config/rets_importer.yml"))    
    config = config[Rails.env]
    config.each { |key,val| @@config[key] = val }
  end

  def self.client
    self.get_config if @@config.nil? || @@config['url'].nil?
    if @@rets_client.nil?
      @@rets_client = RETS::Client.login(
        :url      => @@config['url'],
        :username => @@config['username'],
        :password => @@config['password']
      )
    end
    return @@rets_client
  end

  def self.meta(class_type)
    case class_type
      when 'Office'    then Caboose::StdClass.new({ :search_type => 'Office'    , :remote_key_field => 'OfficeMlsId' , :local_key_field => 'lo_mls_id'    , :local_table => 'rets_offices'      , :date_modified_field => 'ModificationTimestamp'})
      when 'Member'    then Caboose::StdClass.new({ :search_type => 'Member'    , :remote_key_field => 'MemberMlsId' , :local_key_field => 'mls_id'    , :local_table => 'rets_agents'       , :date_modified_field => 'ModificationTimestamp'})
      when 'OpenHouse' then Caboose::StdClass.new({ :search_type => 'OpenHouse' , :remote_key_field => 'OpenHouseKey' , :local_key_field => 'matrix_unique_id'    , :local_table => 'rets_open_houses'  , :date_modified_field => 'ModificationTimestamp'})
      when 'Property'  then Caboose::StdClass.new({ :search_type => 'Property'  , :remote_key_field => 'ListingId' , :local_key_field => 'mls_number'    , :local_table => 'rets_properties'   , :date_modified_field => 'ModificationTimestamp'})
      when 'Media'     then Caboose::StdClass.new({ :search_type => 'Media'     , :remote_key_field => 'MediaObjectID'         , :local_key_field => 'media_id'            , :local_table => 'rets_media'        , :date_modified_field => 'ModificationTimestamp'   })
      end
  end

  #=============================================================================
  # Import method
  #=============================================================================

  def self.import(class_type, query)
    m = self.meta(class_type)
    self.log3(class_type,nil,"Importing #{m.search_type}:#{class_type} with query #{query}...") 
    self.get_config if @@config.nil? || @@config['url'].nil?
    params = {
      :search_type => m.search_type,
      :class => class_type,
      :query => query,
      :timeout => -1
    }
    obj = nil

    begin
      self.client.search(params) do |data|
        obj = self.get_instance_with_id(class_type, data)
        if obj.nil?
          self.log3(class_type,nil,"Error: object is nil")
          self.log3(class_type,nil,data.inspect)
          next
        end
        obj.parse(data)
        obj.save
      end
    rescue RETS::HTTPError => err
      self.log3(class_type,nil,"Import error for #{class_type}: #{query}")
      self.log3(class_type,nil,err.message)
    end
  end

  def self.get_instance_with_id(class_type, data)
    obj = nil
    self.log "Getting instance of #{class_type}..."
    m = case class_type
      when 'Property'  then CabooseRets::Property
      when 'OpenHouse' then CabooseRets::OpenHouse
      when 'Member'    then CabooseRets::Agent
      when 'Office'    then CabooseRets::Office
      when 'Media'     then CabooseRets::Media
    end  
    obj  = case class_type
      when 'Property'  then m.where(:mls_number => data['ListingId']).exists? ? m.where(:mls_number => data['ListingId']).first : m.create(:mls_number => data['ListingId'])
      when 'OpenHouse' then m.where(:matrix_unique_id => data['OpenHouseKey']).exists? ? m.where(:matrix_unique_id => data['OpenHouseKey']).first : m.create(:matrix_unique_id => data['OpenHouseKey'])
      when 'Member'    then m.where(:mls_id => data['MemberMlsId']).exists? ? m.where(:mls_id => data['MemberMlsId']).first : m.create(:mls_id => data['MemberMlsId'])
      when 'Office'    then m.where(:lo_mls_id => data['OfficeMlsId']).exists? ? m.where(:lo_mls_id => data['OfficeMlsId']).first : m.create(:lo_mls_id => data['OfficeMlsId'])
      when 'Media'     then m.where(:media_id => data['MediaObjectID']      ).exists? ? m.where(:media_id => data['MediaObjectID']      ).first : m.create(:media_id => data['MediaObjectID']      )
    end
    self.log "Found matching object ID #{obj.id}"
    return obj
  end

  #=============================================================================
  # Main updater
  #=============================================================================

  def self.update_after(date_modified, save_images = true)
    si = save_images ? 'saving images' : 'not saving images'
    self.log3(nil,nil,"Updating everything after #{date_modified} and #{si}")
    self.delay(:priority => 10, :queue => 'rets').update_helper('Property' , date_modified, save_images)
    self.delay(:priority => 10, :queue => 'rets').update_helper('Office'   , date_modified, false)
    self.delay(:priority => 10, :queue => 'rets').update_helper('Member'   , date_modified, false)
    self.delay(:priority => 10, :queue => 'rets').update_helper('OpenHouse', date_modified, false)
  end

  def self.update_helper(class_type, date_modified, save_images = true)
    si = save_images ? 'saving images' : 'not saving images'
    self.log3(class_type,nil,"Updating #{class_type} modified after #{date_modified} and #{si}")
    m = self.meta(class_type)
    k = m.remote_key_field
    d = date_modified.in_time_zone(CabooseRets::timezone).strftime("%FT%T")

    statusquery = ""
    case class_type
      when 'Property'  then statusquery = "OriginatingSystemName=WESTAL"
      when 'Office'    then statusquery = "OfficeStatus=Active"
      when 'Member'    then statusquery = "MemberStatus=Active"
      when 'OpenHouse' then statusquery = "OpenHouseKeyNumeric=0+"
    end

    quer = "(#{m.date_modified_field}=#{d}+)AND(OriginatingSystemName=WESTAL)AND(#{statusquery})"
    params = {
      :search_type => m.search_type,
      :class => class_type,
      :select => [m.remote_key_field],
      :querytype => 'DMQL2',
      :query => quer,
      :limit => 1000,
      :standard_names_only => true,
      :timeout => -1
    }    
    self.log3(class_type,nil,"Searching with params: " + params.to_s)
    self.client.search(params) do |data|
      self.log3(class_type,nil,"Resulting data: " + data.to_s)
      case class_type
        when 'Property'  then self.delay(:priority => 10, :queue => 'rets').import_properties(data[k], save_images)
        when 'Office'    then self.delay(:priority => 10, :queue => 'rets').import_office(    data[k], false)
        when 'Member'    then self.delay(:priority => 10, :queue => 'rets').import_agent(     data[k], false)
        when 'OpenHouse' then self.delay(:priority => 10, :queue => 'rets').import_open_house(data[k], false)
      end
    end

    # Check for changed images
    if class_type == 'Property' && Rails.env.production?
      self.log3("Property",nil,"Checking for modified images on Properties...")
      d1 = (self.last_updated - 1.hours).in_time_zone(CabooseRets::timezone).strftime("%FT%T")
      params = {
        :search_type => m.search_type,
        :class => class_type,
        :select => [m.remote_key_field],
        :querytype => 'DMQL2',
        :limit => 1000,
        :query => "(PhotosChangeTimestamp=#{d1}+)AND(OriginatingSystemName=WESTAL)AND(MlsStatus=Active)",
        :standard_names_only => true,
        :timeout => -1
      }
      self.log3(class_type,nil,"Searching with params: " + params.to_s)
      self.client.search(params) do |data|
        self.log3(class_type,nil,"Resulting data: " + data.to_s)
        self.delay(:priority => 10, :queue => 'rets').import_properties(data[k], true)
      end
    end

  end

  #=============================================================================
  # Single model import methods (called from a worker dyno)
  #=============================================================================

  def self.import_properties(mls_id, save_images = true)
    si = save_images ? 'saving images' : 'not saving images'
    self.log3('Property',mls_id,"Importing Property #{mls_id} and #{si}...")
    save_images = true if !CabooseRets::Property.where(:mls_number => mls_id.to_s).exists?
    self.import('Property', "(ListingId=#{mls_id})")
    p = CabooseRets::Property.where(:mls_number => mls_id.to_s).first
    if p != nil && p.status == 'Active'
      self.download_property_images(p) if save_images == true && Rails.env.production?
      if p.latitude.blank? || p.latitude == '0.0' || p.longitude.blank? || p.longitude == '0.0'
        self.update_coords(p) 
      end
    else
      self.log3(nil,nil,"No Active Property associated with #{mls_id}, not downloading images")
    end
  end

  def self.import_office(mls_id, save_images = true)
    self.log3('Office',mls_id,"Importing Office #{mls_id}...")
    self.import('Office', "(OfficeMlsId=#{mls_id})")
    office = CabooseRets::Office.where(:matrix_unique_id => mls_id.to_s).first
  end

  def self.import_agent(mls_id, save_images = true)
    return if mls_id == "T/ISC-SA-MATRIXMONITOR"
    a = CabooseRets::Agent.where(:mls_id => mls_id.to_s).first
    if a.nil?
      self.log3('Agent',mls_id,"Importing new Agent #{mls_id}...")
      self.import('Member', "(MemberMlsId=#{mls_id})")
      a = CabooseRets::Agent.where(:mls_id => mls_id.to_s).first
      if a
        a.last_updated = DateTime.now
        a.save
      end
    else
      lu = a.last_updated.blank? ? 0 : a.last_updated.to_time.to_i
      now = DateTime.now.to_time.to_i
      diff = now - lu
      is_old = diff > 86400 # 24 hours
      if is_old
        self.log3('Agent',mls_id,"Updating existing Agent #{mls_id}...")
        self.import('Member', "(MemberMlsId=#{mls_id})")
        a.last_updated = DateTime.now
        a.save
      else
        self.log3('Agent',mls_id,"Skipping importing Agent #{mls_id} because last_updated is today...")
      end
    end
  end

  def self.import_open_house(oh_id, save_images = true)
    self.log3('OpenHouse',oh_id,"Importing Open House #{oh_id}...")
    self.import('OpenHouse', "(OpenHouseKey=#{oh_id})")
  end

  def self.import_media(id, save_images = true)
    self.log3('Media',id,"Importing Media #{id}...")
    self.import('Media', "((MediaObjectID=#{id}+),(MediaObjectID=#{id}-))")
  end

  #=============================================================================
  # Images go here
  #=============================================================================

  def self.download_property_images(p)
    return if Rails.env.development?
    self.log3('Property',p.mls_number,"Downloading images for #{p.mls_number}...")
    ids_to_keep = []
    begin
      self.client.get_object(:resource => 'Property', :type => 'Photo', :location => false, :id => "#{p.matrix_unique_id}:*") do |headers, content|
        next if headers.blank?
        ind = headers['orderhint'] ? headers['orderhint'].to_i : 1 
        self.log3('Media',p.mls_number,headers.to_s)
        self.log3('Media',p.mls_number,"Downloading photo with content-id #{headers['content-id']}, index #{ind}")
        is_new = false
        m = CabooseRets::Media.where(:media_mui => headers['content-id'], :media_order => ind).first
        is_new = true if m.nil?
        m = CabooseRets::Media.new if m.nil?
        tmp_path = "#{Rails.root}/tmp/rets_media_#{headers['content-id']}_#{ind}.jpeg"
        File.open(tmp_path, "wb") do |f|
          f.write(content)
        end
        m.media_mui     = headers['content-id']
        m.media_order   = ind
        m.media_type    = 'Photo'
        cm = nil
        old_cm_id = is_new ? nil : m.media_id
        begin
          cm               = Caboose::Media.new
          cm.image         = File.open(tmp_path)
          cm.name          = "rets_media_#{headers['content-id']}_#{ind}"
          cm.original_name = "rets_media_#{headers['content-id']}_#{ind}.jpeg"
          cm.processed     = true
          cm.save
          if cm && !cm.id.blank?
            m.media_id = cm.id
            m.save
            ids_to_keep << m.id
            if is_new
              self.log3("Media",p.mls_number,"Created new RetsMedia object #{m.id}, media_id = #{m.media_id}")
            else
              old_media = Caboose::Media.where(:id => old_cm_id).first
              if old_media
                self.log3("Media",p.mls_number,"Deleting old CabooseMedia #{old_media.id}")
                old_media.destroy
              end
              self.log3("Media",p.mls_number,"RetsMedia object already existed #{m.id}, updated media_id = #{m.media_id}")
            end
            self.log3("Media",p.mls_number,"Image rets_media_#{headers['content-id']}_#{ind} saved")
          else
            self.log3("Media",p.mls_number,"CabooseMedia was not created for some reason, not saving RetsMedia")
          end
        rescue
          self.log3("Media",p.mls_number,"Error processing image #{ind} from RETS")
        end
        `rm #{tmp_path}`
      end
    rescue
      self.log3("Media",p.mls_number,"Error downloading images for property with MLS # #{p.mls_number}")
    end

    # If we downloaded new images, look for old images to delete. 
    if ids_to_keep.count > 0
      self.log3("Media",p.mls_number,"Keeping new RetsMedia ids: #{ids_to_keep}")
      self.log3("Media",p.mls_number,"Looking for old RetsMedia to delete")
      CabooseRets::Media.where(:media_mui => p.matrix_unique_id).where("id not in (?)",ids_to_keep).each do |med|
        self.log3("Media",p.mls_number,"Deleting old RetsMedia #{med.id} and CabooseMedia #{med.media_id}...")
        m = Caboose::Media.where(:id => med.media_id).where("name ILIKE ?","rets_media%").first
        m.destroy if m
        med.destroy
      end
    end

  end

  def self.download_missing_images
    self.log3("Property",nil,"Downloading all missing images...")
    CabooseRets::Property.where("photo_count = ? OR photo_count is null", '').where(:status => "Active").all.each do |p|
      self.delay(:priority => 10, :queue => 'rets').import_properties(p.mls_number, true)
    end
  end

  def self.download_agent_image(agent)

  end

  def self.download_office_image(office)

  end

  #=============================================================================
  # GPS
  #=============================================================================

  def self.update_coords(p = nil)
    if p.nil?
      model = CabooseRets::Property      
      i = 0      
        self.log3('Property',nil,"Updating coords properties...")
        model.where(:latitude => nil).reorder(:mls_number).each do |p1|
          self.delay(:priority => 10, :queue => 'rets').update_coords(p1)
        end
      return
    end

    self.log3('Property',p.mls_number,"Getting coords for MLS # #{p.mls_number}...")
    coords = self.coords_from_address(CGI::escape "#{p.street_number} #{p.street_name}, #{p.city}, #{p.state_or_province} #{p.postal_code}")
    if coords.nil? || coords == false
      self.log3('Property',nil,"Can't set coords for MLS # #{p.mls_number}...")
      return
    end

    p.latitude = coords['lat'].to_f
    p.longitude = coords['lng'].to_f
    p.save
  end

  def self.coords_from_address(address)
    begin
      uri = "https://maps.googleapis.com/maps/api/geocode/json?key=AIzaSyB9Wwx7sdWaUnFyLcdQ61NOV7DE2NZkDUE&address=#{address}"
      uri.gsub!(" ", "+")
      resp = HTTParty.get(uri)
      json = JSON.parse(resp.body)
      return json['results'][0]['geometry']['location']
    rescue
      self.log "Error: #{uri}"
      sleep(2)
      return false
    end
  end

  #=============================================================================
  # Purging
  #=============================================================================

  def self.purge
    self.log3(nil,nil,'purging')
    self.purge_properties
    self.purge_offices
    self.purge_agents
    self.purge_open_houses
  end  
  
  def self.purge_properties()   self.delay(:priority => 10, :queue => 'rets').purge_helper('Property', '2012-01-01') end
  def self.purge_offices()      self.delay(:priority => 10, :queue => 'rets').purge_helper('Office', '2012-01-01') end
  def self.purge_agents()       self.delay(:priority => 10, :queue => 'rets').purge_helper('Member', '2012-01-01') end
  def self.purge_open_houses()  self.delay(:priority => 10, :queue => 'rets').purge_helper('OpenHouse', '2012-01-01') end
  

  # Adds/removes records in the database
  def self.purge_helper(class_type, date_modified)    
    m = self.meta(class_type)    
    self.log(m.search_type)

    self.log3(class_type,nil,"Purging #{class_type}...")

    # Get the total number of records
    self.log3(class_type,nil,"Getting total number of records for #{class_type}...")

    statusquery = ""

    case class_type
      when 'Property'  then statusquery = "MlsStatus=Active"
      when 'Office'    then statusquery = "OfficeStatus=Active"
      when 'Member'    then statusquery = "MemberStatus=Active"
      when 'OpenHouse' then statusquery = "OpenHouseKeyNumeric=0+"
    end

    params = {
      :search_type => m.search_type,
      :class => class_type,
      :query => "(#{m.date_modified_field}=#{date_modified}T00:00:01+)AND(#{statusquery})AND(OriginatingSystemName=WESTAL)",
      :standard_names_only => true,
      :limit => 1000,
      :timeout => -1
    }
    count = 0
    self.client.search(params.merge({ :count => 1})) do |data| end        
    count = self.client.rets_data[:code] == "20201" ? 0 : self.client.rets_data[:count]    
    batch_count = (count.to_f/1000.0).ceil

    ids = []
    k = m.remote_key_field
    (0...batch_count).each do |i|
      self.log3(class_type,nil,"Getting ids for #{class_type} (batch #{i+1} of #{batch_count})...")
      self.client.search(params.merge({ :select => [k], :limit => 1000, :offset => 1000*i })) do |data|
        ids << data[k]
      end
    end

    # Only do stuff if we got a real response from the server 
    if ids.count > 0

      self.log3(class_type,nil,"Remote IDs found: #{ids.to_s}")

      # Delete any records in the local database that shouldn't be there
      self.log3(class_type,nil,"Finding #{class_type} records in the local database that are not in the remote database...")
      t = m.local_table
      k = m.local_key_field
      query = "select distinct #{k} from #{t}"
      rows = ActiveRecord::Base.connection.select_all(ActiveRecord::Base.send(:sanitize_sql_array, query))
      local_ids = rows.collect{ |row| row[k] }
      self.log3(class_type,nil,"Local IDs found: #{local_ids.to_s}")
      ids_to_remove = local_ids - ids
      self.log3(class_type,nil,"Found #{ids_to_remove.count} #{class_type} records in the local database that are not in the remote database.")
      
      # Delete all RetsMedia and CabooseMedia for the deleted property listings (except keep the first image)
      if class_type == 'Property' && ids_to_remove && ids_to_remove.count > 0
        self.log3(class_type,nil,"Deleting Media objects that shouldn't be there...")
        muis = CabooseRets::Property.where("#{k} in (?)", ids_to_remove).pluck(:matrix_unique_id)
        if muis && muis.count > 0 && Rails.env.production?
          CabooseRets::Media.where("media_mui in (?)", muis).where("media_order != ?", 1).each do |med|
            self.log3("Media",med.id,"Deleting old RetsMedia #{med.id} and CabooseMedia #{med.media_id}...")
            m = Caboose::Media.where(:id => med.media_id).where("name ILIKE ?","rets_media%").first
            m.destroy if m
            med.destroy
          end
        end
      end

      if class_type != 'Property' # keep all properties in the DB
        self.log3(class_type,nil,"Deleting #{class_type} records in the local database that shouldn't be there...")
        query = ["delete from #{t} where #{k} in (?)", ids_to_remove]
        ActiveRecord::Base.connection.execute(ActiveRecord::Base.send(:sanitize_sql_array, query))
      end

      # Find any ids in the remote database that should be in the local database
      self.log3(class_type,nil,"Finding #{class_type} records in the remote database that should be in the local database...")
      query = "select distinct #{k} from #{t}"
      rows = ActiveRecord::Base.connection.select_all(ActiveRecord::Base.send(:sanitize_sql_array, query))
      local_ids = rows.collect{ |row| row[k] }
      self.log3(class_type,nil,"Local IDs found: #{local_ids.to_s}")
      ids_to_add = ids - local_ids
      ids_to_add = ids_to_add.sort.reverse
      self.log3(class_type,nil,"Found #{ids_to_add.count} #{class_type} records in the remote database that we need to add to the local database.")
      ids_to_add.each do |id|
        self.log3(class_type,nil,"Importing #{id}...")
        case class_type
          when "Property"   then self.delay(:priority => 10, :queue => 'rets').import_properties(id, true)
          when "Office"    then self.delay(:priority => 10, :queue => 'rets').import_office(id, false)
          when "Member"     then self.delay(:priority => 10, :queue => 'rets').import_agent(id, false)
          when "OpenHouse" then self.delay(:priority => 10, :queue => 'rets').import_open_house(id, false)
        end
      end
    end
  end

  #=============================================================================
  # Logging
  #=============================================================================

  def self.log(msg)
    puts "[rets_importer] #{msg}"
  end

  def self.log2(msg)
    puts "======================================================================"
    puts "[rets_importer] #{msg}"
    puts "======================================================================"
  end

  def self.log3(class_name, object_id, text)
    self.log2(text)
    log = CabooseRets::Log.new
    log.class_name = class_name
    log.object_id = object_id
    log.text = text
    log.timestamp = DateTime.now
    log.save
  end

  #=============================================================================
  # Locking update task
  #=============================================================================

  def self.update_rets
    self.log3(nil,nil,"Updating rets...")
    if self.task_is_locked
      self.log2("Task is locked, aborting.")
      return
    end
    self.log2("Locking task...")
    task_started = self.lock_task
    begin
      overlap = 2.hours
      if (DateTime.now - self.last_purged).to_f >= 0.5
        self.purge
        self.save_last_purged(task_started)
        overlap = 1.week
      end
      self.update_after((self.last_updated - overlap), false)
      self.download_missing_images if Rails.env.production?
      self.log3(nil,nil,"Saving the timestamp for when we updated to #{task_started.to_s}...")
		  self.save_last_updated(task_started)
		  self.log2("Unlocking the task...")
		  self.unlock_task
		rescue Exception => err
		  puts err
		  raise
		ensure
		  self.log2("Unlocking task if last updated...")
		  self.unlock_task_if_last_updated(task_started)
    end
		# Start the same update process in 20 minutes
		self.log3(nil,nil,"Adding the update rets task for 20 minutes from now...")
		q = "handler like '%update_rets%'"
		count = Delayed::Job.where(q).count
		if count == 0 || (count == 1 && Delayed::Job.where(q).first.locked_at)
		  self.delay(:run_at => 20.minutes.from_now, :priority => 10, :queue => 'rets').update_rets
		end

    # Delete RETS logs over 7 days old
    dt = DateTime.now - 5.days
    sql = "delete from rets_logs where timestamp < '#{dt}';"
    ActiveRecord::Base.connection.select_all(sql)

    # Update search options
    CabooseRets::SearchOption.delay(:queue => "rets", :priority => 15).update_search_options
  end

  def self.last_updated
    if !Caboose::Setting.exists?(:name => 'rets_last_updated')
      Caboose::Setting.create(:name => 'rets_last_updated', :value => '2013-08-06T00:00:01')
    end
    s = Caboose::Setting.where(:name => 'rets_last_updated').first
    return DateTime.parse(s.value)
  end

  def self.last_purged
    if !Caboose::Setting.exists?(:name => 'rets_last_purged')
      Caboose::Setting.create(:name => 'rets_last_purged', :value => '2013-08-06T00:00:01')
    end
    s = Caboose::Setting.where(:name => 'rets_last_purged').first
    return DateTime.parse(s.value)
  end

  def self.save_last_updated(d)
    s = Caboose::Setting.where(:name => 'rets_last_updated').first
    s.value = d.in_time_zone(CabooseRets::timezone).strftime("%FT%T%:z")
    s.save
  end

  def self.save_last_purged(d)
    s = Caboose::Setting.where(:name => 'rets_last_purged').first
    s.value = d.in_time_zone(CabooseRets::timezone).strftime("%FT%T%:z")
    s.save
  end

  def self.task_is_locked
    return Caboose::Setting.exists?(:name => 'rets_update_running')
  end

  def self.lock_task
    d = DateTime.now.utc.in_time_zone(CabooseRets::timezone)
    Caboose::Setting.create(:name => 'rets_update_running', :value => d.strftime("%FT%T%:z"))
    return d
  end

  def self.unlock_task
    Caboose::Setting.where(:name => 'rets_update_running').first.destroy
  end

  def self.unlock_task_if_last_updated(d)
    setting = Caboose::Setting.where(:name => 'rets_update_running').first
    self.unlock_task if setting && d.in_time_zone.strftime("%FT%T%:z") == setting.value
  end

end