UX: Wizard resends activation email when user exists

app/controllers/finish_installation_controller.rb

@@ -15,7 +15,11 @@ class FinishInstallationController < ApplicationController
       email = params[:email].strip
       raise Discourse::InvalidParameters.new unless @allowed_emails.include?(email)
 
-      return redirect_confirm(email) if UserEmail.where("lower(email) = ?", email).exists?
+      if existing_user = User.find_by_email(email)
+        @user = existing_user
+        send_signup_email
+        return redirect_confirm(email)
+      end
 
       @user.email = email
       @user.username = params[:username]
@@ -23,8 +27,7 @@ class FinishInstallationController < ApplicationController
       @user.password_required!
 
       if @user.save
-        @email_token = @user.email_tokens.unconfirmed.active.first
-        Jobs.enqueue(:critical_user_email, type: :signup, user_id: @user.id, email_token: @email_token.token)
+        send_signup_email
         return redirect_confirm(@user.email)
       end
 
@@ -38,16 +41,22 @@ class FinishInstallationController < ApplicationController
   def resend_email
     @email = session[:registered_email]
     @user = User.find_by_email(@email)
-    if @user.present?
-      @email_token = @user.email_tokens.unconfirmed.active.first
-      if @email_token.present?
-        Jobs.enqueue(:critical_user_email, type: :signup, user_id: @user.id, email_token: @email_token.token)
-      end
-    end
+    send_signup_email if @user.present?
   end
 
   protected
 
+  def send_signup_email
+    email_token = @user.email_tokens.unconfirmed.active.first
+
+    if email_token.present?
+      Jobs.enqueue(:critical_user_email,
+                   type: :signup,
+                   user_id: @user.id,
+                   email_token: email_token.token)
+    end
+  end
+
   def redirect_confirm(email)
     session[:registered_email] = email
     redirect_to(finish_installation_confirm_email_path)

spec/requests/finish_installation_controller_spec.rb

@@ -68,18 +68,40 @@ describe FinishInstallationController do
         expect(response).not_to be_redirect
       end
 
-      it "registers the admin when the email is in the list" do
-        expect do
-          post "/finish-installation/register.json", params: {
+      context "working params" do
+        let(:params) do
+          {
             email: 'robin@example.com',
             username: 'eviltrout',
             password: 'disismypasswordokay'
           }
-        end.to change { Jobs::CriticalUserEmail.jobs.size }.by(1)
+        end
 
-        expect(response).to be_redirect
-        expect(User.where(username: 'eviltrout').exists?).to eq(true)
+        it "registers the admin when the email is in the list" do
+          expect do
+            post "/finish-installation/register.json", params: params
+          end.to change { Jobs::CriticalUserEmail.jobs.size }.by(1)
+
+          expect(response).to be_redirect
+          expect(User.where(username: 'eviltrout').exists?).to eq(true)
+        end
+
+        it "automatically resends the signup email when the user already exists" do
+          expect do
+            post "/finish-installation/register.json", params: params
+          end.to change { Jobs::CriticalUserEmail.jobs.size }.by(1)
+
+          expect(User.where(username: 'eviltrout').exists?).to eq(true)
+
+          expect do
+            post "/finish-installation/register.json", params: params
+          end.to change { Jobs::CriticalUserEmail.jobs.size }.by(1)
+
+          expect(response).to be_redirect
+          expect(User.where(username: 'eviltrout').exists?).to eq(true)
+        end
       end
+
     end
   end