fix icons not being jazzy

Gemfile

@@ -97,6 +97,8 @@ gem "countries"
 # Markdown parsing
 gem "redcarpet"
 
+gem "ruby_identicon"
+
 # Feature flags
 gem "flipper"
 gem "flipper-active_record"

Gemfile.lock

@@ -126,6 +126,7 @@ GEM
     chartkick (5.2.0)
     childprocess (5.1.0)
       logger (~> 1.5)
+    chunky_png (1.4.0)
     concurrent-ruby (1.3.5)
     connection_pool (2.5.3)
     countries (8.0.2)
@@ -438,6 +439,8 @@ GEM
       rubocop-performance (>= 1.24)
       rubocop-rails (>= 2.30)
     ruby-progressbar (1.13.0)
+    ruby_identicon (0.0.6)
+      chunky_png (~> 1.4.0)
     rubyzip (2.4.1)
     safely_block (0.5.0)
     sanitize (7.0.0)
@@ -589,6 +592,7 @@ DEPENDENCIES
   rails (~> 8.0.2)
   redcarpet
   rubocop-rails-omakase
+  ruby_identicon
   selenium-webdriver
   sentry-rails
   sentry-ruby

app/models/user.rb

@@ -430,9 +430,16 @@ class User < ApplicationRecord
   def avatar_url
     return self.slack_avatar_url if self.slack_avatar_url.present?
     return self.github_avatar_url if self.github_avatar_url.present?
-    initials = self.email_addresses&.first&.email[0..1]&.upcase
-    hashed_initials = Digest::SHA256.hexdigest(initials)[0..5]
-    "https://i2.wp.com/ui-avatars.com/api/#{initials}/48/#{hashed_initials}/fff?ssl=1" if initials.present?
+
+    email = self.email_addresses&.first&.email
+    if email.present?
+      initials = email[0..1]&.upcase
+      hashed_initials = Digest::SHA256.hexdigest(initials)[0..5]
+      return "https://i2.wp.com/ui-avatars.com/api/#{initials}/48/#{hashed_initials}/fff?ssl=1"
+    end
+
+    base64_identicon = RubyIdenticon.create_base64(id.to_s)
+    "data:image/png;base64,#{base64_identicon}"
   end
 
   def display_name

config/routes.rb

@@ -107,7 +107,7 @@ Rails.application.routes.draw do
   post "my/settings/migrate_heartbeats", to: "users#migrate_heartbeats", as: :my_settings_migrate_heartbeats
 
   namespace :my do
-    resources :project_repo_mappings, param: :project_name, only: [ :edit, :update ], constraints: { project_name: /[^\/]+/ }
+  resources :project_repo_mappings, param: :project_name, only: [ :edit, :update ], constraints: { project_name: /[^\/]+/ }
     resource :mailing_address, only: [ :show, :edit ]
     get "mailroom", to: "mailroom#index"
   end