Add keys to instance_settings

priv/repo/migrations/20250527054942_create_instance_settings.exs

@@ -4,16 +4,42 @@ defmodule Nulla.Repo.Migrations.CreateInstanceSettings do
   def change do
     create table(:instance_settings) do
       add :name, :string, default: "Nulla", null: false
-      add :description, :string, default: "Freedom Social Network", null: false
+      add :description, :text, default: "Freedom Social Network", null: false
       add :domain, :string, default: "localhost", null: false
       add :registration, :boolean, default: false, null: false
       add :max_characters, :integer, default: 5000, null: false
       add :max_upload_size, :integer, default: 50, null: false
-      add :offset, :integer, default: 100, null: false
-      add :public_key, :string
-      add :private_key, :string
+      add :api_offset, :integer, default: 100, null: false
+      add :public_key, :text
+      add :private_key, :text
 
       timestamps()
     end
+
+    flush()
+
+    execute(fn ->
+      {public_key, private_key} = Nulla.KeyGen.generate_keys()
+      now = NaiveDateTime.utc_now() |> NaiveDateTime.truncate(:second)
+      domain =
+      Application.get_env(:nulla, NullaWeb.Endpoint, [])
+      |> Keyword.get(:url, [])
+      |> Keyword.get(:host, "localhost")
+      esc = fn str -> "'#{String.replace(str, "'", "''")}'" end
+      sql = """
+      INSERT INTO instance_settings (
+        name, description, domain, registration,
+        max_characters, max_upload_size, api_offset,
+        public_key, private_key, inserted_at, updated_at
+      ) VALUES (
+        'Nulla', 'Freedom Social Network', '#{domain}', false,
+        5000, 50, 100,
+        #{esc.(public_key)}, #{esc.(private_key)},
+        '#{now}', '#{now}'
+      )
+      """
+
+      Ecto.Adapters.SQL.query!(Nulla.Repo, sql, [])
+    end)
   end
 end