Ensure pod urls are always lowercase

otherwise pods can exist multiple times with mixed case

app/models/pod.rb

@@ -58,7 +58,7 @@ class Pod < ApplicationRecord
     def find_or_create_by(opts) # Rename this method to not override an AR method
       uri = URI.parse(opts.fetch(:url))
       port = DEFAULT_PORTS.include?(uri.port) ? DEFAULT_PORT : uri.port
-      find_or_initialize_by(host: uri.host, port: port).tap do |pod|
+      find_or_initialize_by(host: uri.host.downcase, port: port).tap do |pod|
         pod.ssl ||= (uri.scheme == "https")
         pod.save
       end
@@ -168,6 +168,6 @@ class Pod < ApplicationRecord
   def not_own_pod
     pod_uri = AppConfig.pod_uri
     pod_port = DEFAULT_PORTS.include?(pod_uri.port) ? DEFAULT_PORT : pod_uri.port
-    errors.add(:base, "own pod not allowed") if pod_uri.host == host && pod_port == port
+    errors.add(:base, "own pod not allowed") if pod_uri.host.downcase == host && pod_port == port
   end
 end

db/migrate/20221030193943_cleanup_duplicate_pods.rb

@@ -8,6 +8,7 @@ class CleanupDuplicatePods < ActiveRecord::Migration[6.1]
     reversible do |change|
       change.up do
         remove_duplicates
+        cleanup_mixed_case_pods
 
         Pod.where(port: nil).update_all(port: -1) # rubocop:disable Rails/SkipsModelValidations
       end
@@ -24,13 +25,24 @@ class CleanupDuplicatePods < ActiveRecord::Migration[6.1]
 
   def remove_duplicates
     Pod.where(port: nil).group(:host).having("count(*) > 1").pluck(:host).each do |host|
-      duplicate_ids = Pod.where(host: host).order(:id).ids
-      target_pod_id = duplicate_ids.shift
+      cleanup_duplicates(Pod.where(host: host).order(:id).ids)
+    end
+  end
 
-      duplicate_ids.each do |pod_id|
-        Person.where(pod_id: pod_id).update_all(pod_id: target_pod_id) # rubocop:disable Rails/SkipsModelValidations
-        Pod.delete(pod_id)
-      end
+  def cleanup_mixed_case_pods
+    Pod.where("lower(host) != host").pluck(:host, :port).each do |host, port|
+      pod_ids = Pod.where("lower(host) = ?", host.downcase).where(port: port).order(:id).ids
+      cleanup_duplicates(pod_ids.dup) if pod_ids.size > 1
+      Pod.find(pod_ids.first).update(host: host.downcase)
+    end
+  end
+
+  def cleanup_duplicates(duplicate_ids)
+    target_pod_id = duplicate_ids.shift
+
+    duplicate_ids.each do |pod_id|
+      Person.where(pod_id: pod_id).update_all(pod_id: target_pod_id) # rubocop:disable Rails/SkipsModelValidations
+      Pod.delete(pod_id)
     end
   end
 end

spec/models/pod_spec.rb

@@ -43,6 +43,11 @@ describe Pod, type: :model do
       expect(pod.port).to eq(Pod::DEFAULT_PORT)
     end
 
+    it "normalizes hostname to lowercase" do
+      pod = Pod.find_or_create_by(url: "https://eXaMpLe.oRg/")
+      expect(pod.host).to eq("example.org")
+    end
+
     context "validation" do
       it "is valid" do
         pod = Pod.find_or_create_by(url: "https://example.org/")