browser_check.rb

module Concerns
  module BrowserCheck
    extend ActiveSupport::Concern

    NOT_SUPPORTED_VERSIONS = {
      ie: 11,
      edge: 19,
      ios: 12,
      android: 6
    }.freeze

    included do
      before_action :check_browser
    end

    private

    def check_browser
      byebug
      if browser_not_supported?
        redirect_to update_browser_path
      elsif os_not_supported?
        redirect_to update_os_path
      end
    end

    def browser_not_supported?
      [
        browser.ie?(not_supported_versions_for(:ie)),
        browser.edge?(not_supported_versions_for(:edge))
      ].any?
    end

    def os_not_supported?
      [
        browser.platform.ios?(not_supported_versions_for(:ios)),
        browser.platform.android?(not_supported_versions_for(:android))
      ].any?
    end

    def not_supported_versions_for(key)
      next_version = NOT_SUPPORTED_VERSIONS[key] + 1

      "< #{next_version}"
    end
  end
end