initial commit

app/controllers/setup_controller.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+class SetupController < ApplicationController
+  skip_before_action :maybe_redirect_to_setup
+  skip_before_action :authenticate_user!
+
+  before_action :redirect_to_root_if_signed, if: :signed_in?
+  before_action :ensure_first_user_not_created!
+
+  def index
+    @account = Account.new(account_params)
+    @user = @account.users.new(user_params)
+  end
+
+  def create
+    @account = Account.new(account_params)
+    @user = @account.users.new(user_params)
+
+    if @user.save
+      sign_in(@user)
+
+      redirect_to root_path
+    else
+      render :index, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def user_params
+    return {} unless params[:user]
+
+    params.require(:user).permit(:first_name, :last_name, :email, :password)
+  end
+
+  def account_params
+    return {} unless params[:account]
+
+    params.require(:account).permit(:name)
+  end
+
+  def redirect_to_root_if_signed
+    redirect_to root_path, notice: 'You are already signed in'
+  end
+
+  def ensure_first_user_not_created!
+    redirect_to new_user_session_path, notice: 'Please sign in.' if User.exists?
+  end
+end