Tidy up homepage and navigation

db/migrate/20251108041801_create_dsns.rb

@@ -0,0 +1,12 @@
+class CreateDsns < ActiveRecord::Migration[8.1]
+  def change
+    create_table :dsns do |t|
+      t.string :key
+      t.string :name
+      t.boolean :enabled, default: true, null: false
+
+      t.timestamps
+    end
+    add_index :dsns, :key, unique: true
+  end
+end

db/migrate/20251108041822_remove_project_id_from_events.rb

@@ -0,0 +1,5 @@
+class RemoveProjectIdFromEvents < ActiveRecord::Migration[8.1]
+  def change
+    remove_reference :events, :project, null: false, foreign_key: true
+  end
+end

db/migrate/20251108042208_drop_projects_table.rb

@@ -0,0 +1,5 @@
+class DropProjectsTable < ActiveRecord::Migration[8.1]
+  def change
+    drop_table :projects
+  end
+end

db/migrate/20251108042553_add_events_count_to_network_ranges.rb

@@ -0,0 +1,67 @@
+class AddEventsCountToNetworkRanges < ActiveRecord::Migration[8.1]
+  def up
+    # Add the column with default value
+    add_column :network_ranges, :events_count, :integer, null: false, default: 0
+
+    # Add index for faster queries
+    add_index :network_ranges, :events_count
+
+    # Create trigger function to update counter cache
+    execute <<-SQL
+      CREATE OR REPLACE FUNCTION update_network_range_events_count()
+      RETURNS TRIGGER AS $$
+      BEGIN
+        -- Update all network ranges that contain the IP address
+        UPDATE network_ranges
+        SET events_count = events_count +
+          CASE
+            WHEN TG_OP = 'INSERT' THEN 1
+            WHEN TG_OP = 'DELETE' THEN -1
+            ELSE 0
+          END
+        WHERE network >>= NEW.ip_address::inet;
+
+        RETURN COALESCE(NEW, OLD);
+      END;
+      $$ LANGUAGE plpgsql;
+    SQL
+
+    # Create triggers for events table
+    execute <<-SQL
+      CREATE TRIGGER update_network_ranges_events_count_after_insert
+      AFTER INSERT ON events
+      FOR EACH ROW
+      EXECUTE FUNCTION update_network_range_events_count();
+    SQL
+
+    execute <<-SQL
+      CREATE TRIGGER update_network_ranges_events_count_after_delete
+      AFTER DELETE ON events
+      FOR EACH ROW
+      EXECUTE FUNCTION update_network_range_events_count();
+    SQL
+
+    # Backfill existing counts
+    execute <<-SQL
+      UPDATE network_ranges
+      SET events_count = (
+        SELECT COUNT(*)
+        FROM events
+        WHERE events.ip_address <<= network_ranges.network
+      );
+    SQL
+  end
+
+  def down
+    # Drop triggers first
+    execute <<-SQL
+      DROP TRIGGER IF EXISTS update_network_ranges_events_count_after_insert ON events;
+      DROP TRIGGER IF EXISTS update_network_ranges_events_count_after_delete ON events;
+      DROP FUNCTION IF EXISTS update_network_range_events_count();
+    SQL
+
+    # Remove column and index
+    remove_index :network_ranges, :events_count
+    remove_column :network_ranges, :events_count
+  end
+end

db/migrate/20251108042936_create_default_dsn.rb

@@ -0,0 +1,20 @@
+class CreateDefaultDsn < ActiveRecord::Migration[8.1]
+  def change
+    reversible do |dir|
+      dir.up do
+        # Only create if no DSNs exist
+        if Dsn.count == 0
+          Dsn.create!(
+            name: 'Development DSN',
+            key: 'dev-test-key-1234567890abcdef',
+            enabled: true
+          )
+        end
+      end
+      dir.down do
+        # Remove the default DSN if it exists
+        Dsn.where(key: 'dev-test-key-1234567890abcdef').delete_all
+      end
+    end
+  end
+end