# Copyright (C) 2012-2014 Zammad Foundation, http://zammad-foundation.org/

class UserDevice < ApplicationModel
  store     :device_details
  store     :location_details
  validates :name, presence: true

=begin

store device for user

  user_device = UserDevice.add(
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.107 Safari/537.36',
    '172.0.0.1',
    user.id,
    'fingerprintABC123',
    'session', # session|basic_auth|token_auth|sso
  )

=end

  def self.add(user_agent, ip, user_id, fingerprint, type)

    # get location info
    location_details = Service::GeoIp.location(ip)
    location = location_details['country_name']

    # find device by fingerprint
    if fingerprint
      user_device = UserDevice.find_by(
        user_id: user_id,
        fingerprint: fingerprint,
        location: location,
      )
      return action(user_device.id, user_agent, ip, user_id) if user_device
    end

    # for basic_auth|token_auth search for user agent
    if type == 'basic_auth' || type == 'token_auth'
      user_device = UserDevice.find_by(
        user_id: user_id,
        user_agent: user_agent,
        location: location,
      )
      return action(user_device.id, user_agent, ip, user_id) if user_device
    end

    # get browser details
    browser = Browser.new(:ua => user_agent, :accept_language => 'en-us')
    browser = {
      plattform: browser.platform.to_s.camelize,
      name: browser.name,
      version: browser.version,
      full_version: browser.full_version,
    }

    # generate device name
    name = browser[:plattform] || ''
    if browser[:name]
      if name
        name += ', '
      end
      name += browser[:name]
    end

    # if not identified, use user agent
    if name == 'Other, Other'
      name = user_agent
      browser[:name] = user_agent
    end

    # check if exists
    user_device = self.find_by(
      user_id: user_id,
      os: browser[:plattform],
      browser: browser[:name],
      location: location,
    )

    if user_device
      return action(user_device.id, user_agent, ip, user_id) if user_device
    end

    # create new device
    self.create(
      user_id: user_id,
      name: name,
      os: browser[:plattform],
      browser: browser[:name],
      location: location,
      device_details: browser,
      location_details: location_details,
      user_agent: user_agent,
      ip: ip,
      fingerprint: fingerprint,
    )

  end

=begin

log user device action

  UserDevice.action(
    user_device_id,
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.107 Safari/537.36',
    '172.0.0.1',
    user.id,
  )

=end

  def self.action(user_device_id, user_agent, ip, user_id)
    user_device = UserDevice.find(user_device_id)

    # update location if needed
    if user_device.ip != ip
      user_device.ip = ip
      location_details = Service::GeoIp.location(ip)
      user_device.location_details = location_details

      location = location_details['country_name']
      user_device.location = location
    end

    # update attributes
    user_device.save
    user_device
  end

end