Geopositioning user ips with rake task

Gemfile

@@ -38,6 +38,7 @@ gem "delayed_job_active_record"
 
 gem "whenever", require: false
 
+gem "ipaddr"
 gem "recaptcha"
 
 group :development, :test do

Gemfile.lock

@@ -524,6 +524,7 @@ GEM
       ruby-vips (>= 2.0.17, < 3)
     invisible_captcha (0.13.0)
       rails (>= 3.2.0)
+    ipaddr (1.2.3)
     json (2.6.2)
     jwt (2.5.0)
     kaminari (1.2.2)
@@ -904,6 +905,7 @@ DEPENDENCIES
   delayed_job_active_record
   faker
   figaro (>= 1.1.1)
+  ipaddr
   letter_opener_web
   listen (~> 3.1.0)
   puma (< 6)

lib/tasks/geopositioning_users.rake

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require "csv"
+require "ipaddr"
+
+namespace :geopositioning_users do
+  # This task extracts a csv file with the IPs of the users and their location.
+  desc "Generate a CSV with the users IP information"
+  task generate_csv: :environment do
+    headers = %w(email IP IP_location last_sign_in)
+    # VPN IP, blank or nils
+    invalid_ips = ["10.2.1.52", "", nil]
+    users_with_valid_ip = Decidim::User.where.not(last_sign_in_ip: invalid_ips)
+
+    CSV.open("users_ip_locations.csv", "w") do |csv|
+      csv << headers
+
+      users_with_valid_ip.each_with_index do |user, index|
+        user_ip = user.last_sign_in_ip
+        puts "User #{index}/#{users_with_valid_ip.count}"
+
+        if IPAddr.new(user_ip).private?
+          csv << [user.email, user_ip, "Private IP", user.last_sign_in_at]
+        else
+          # Delay to wait between requests to Geocoder API
+          sleep 0.5
+          csv << [user.email, user_ip, ip_location(user_ip), user.last_sign_in_at]
+        end
+      end
+    end
+  end
+
+  private
+
+  def ip_location(ip)
+    results = Geocoder.search(ip).first
+
+    results.present? ? results.address : nil
+  end
+end