fix: ip-lookup database lazy loading for all environments (#8052)

The current task for loading `GeoLite2-City.mmdb` doesn't work for all build types. This PR addresses this and move the task to initializer to ensure consistency across environments. 

---------

Co-authored-by: Sojan Jose <sojan@pepalo.com>
Co-authored-by: Sojan Jose <sojan.official@gmail.com>

app/services/geocoder/setup_service.rb

@@ -0,0 +1,49 @@
+require 'rubygems/package'
+
+class Geocoder::SetupService
+  def perform
+    return if File.exist?(GeocoderConfiguration::LOOK_UP_DB)
+
+    ip_lookup_api_key = ENV.fetch('IP_LOOKUP_API_KEY', nil)
+    if ip_lookup_api_key.blank?
+      log_info('IP_LOOKUP_API_KEY empty. Skipping geoip database setup')
+      return
+    end
+
+    log_info('Fetch GeoLite2-City database')
+    fetch_and_extract_database(ip_lookup_api_key)
+  end
+
+  private
+
+  def fetch_and_extract_database(api_key)
+    base_url = ENV.fetch('IP_LOOKUP_BASE_URL', 'https://download.maxmind.com/app/geoip_download')
+    source_file = Down.download("#{base_url}?edition_id=GeoLite2-City&suffix=tar.gz&license_key=#{api_key}")
+
+    extract_tar_file(source_file)
+    log_info('Fetch complete')
+  rescue StandardError => e
+    log_error(e.message)
+  end
+
+  def extract_tar_file(source_file)
+    tar_extract = Gem::Package::TarReader.new(Zlib::GzipReader.open(source_file))
+    tar_extract.rewind
+
+    tar_extract.each do |entry|
+      next unless entry.full_name.include?('GeoLite2-City.mmdb') && entry.file?
+
+      File.open GeocoderConfiguration::LOOK_UP_DB, 'wb' do |f|
+        f.print entry.read
+      end
+    end
+  end
+
+  def log_info(message)
+    Rails.logger.info "[rake ip_lookup:setup] #{message}"
+  end
+
+  def log_error(message)
+    Rails.logger.error "[rake ip_lookup:setup] #{message}"
+  end
+end

config/initializers/geocoder.rb

@@ -24,3 +24,7 @@ module GeocoderConfiguration
 end
 
 Geocoder.configure(ip_lookup: :geoip2, geoip2: { file: GeocoderConfiguration::LOOK_UP_DB }) if ENV['IP_LOOKUP_API_KEY'].present?
+
+Rails.application.config.after_initialize do
+  Geocoder::SetupService.new.perform
+end

lib/tasks/ip_lookup.rake

@@ -2,35 +2,6 @@ require 'rubygems/package'
 
 namespace :ip_lookup do
   task setup: :environment do
-    next if File.exist?(GeocoderConfiguration::LOOK_UP_DB)
+    Geocoder::SetupService.new.perform
-
-    ip_lookup_api_key = ENV.fetch('IP_LOOKUP_API_KEY', nil)
-    if ip_lookup_api_key.blank?
-      Rails.logger.info '[rake ip_lookup:setup] IP_LOOKUP_API_KEY empty. Skipping geoip database setup'
-      next
-    end
-
-    Rails.logger.info '[rake ip_lookup:setup] Fetch GeoLite2-City database'
-
-    begin
-      base_url = ENV.fetch('IP_LOOKUP_BASE_URL', 'https://download.maxmind.com/app/geoip_download')
-      source_file = Down.download(
-        "#{base_url}?edition_id=GeoLite2-City&suffix=tar.gz&license_key=#{ip_lookup_api_key}"
-      )
-
-      tar_extract = Gem::Package::TarReader.new(Zlib::GzipReader.open(source_file))
-      tar_extract.rewind
-
-      tar_extract.each do |entry|
-        next unless entry.full_name.include?('GeoLite2-City.mmdb') && entry.file?
-
-        File.open GeocoderConfiguration::LOOK_UP_DB, 'wb' do |f|
-          f.print entry.read
-        end
-      end
-      Rails.logger.info '[rake ip_lookup:setup] Fetch complete'
-    rescue StandardError => e
-      Rails.logger.error "[rake ip_lookup:setup] #{e.message}"
-    end
   end
 end