187434149 flow to create user

app/controllers/api/v1/users_controller.rb

@@ -1,9 +1,26 @@
 module Api
   module V1
     class UsersController < BaseController
+      include ActionController::Flash
 
       def create
-        render :json => 'the create method of UsersController is not yet implemented'.to_json, status: 501
+        email = params[:email]
+
+        # Check if the user already exists by email
+        existing_user = User.find_by(email: email)
+        if existing_user
+          render json: { message: 'A user with this email already exists.' }, status: :conflict
+          return
+        end
+
+        # Build a new user object with the given email
+        new_user = User.new(email: email)
+
+        if new_user.save
+          render json: { message: 'User created successfully', user: new_user }, status: :created
+        else
+          render json: { message: 'Failed to create user', errors: new_user.errors.full_messages }, status: :unprocessable_entity
+        end
       end
 
       def index

app/models/user.rb

@@ -1,7 +1,10 @@
 # app/models/user.rb
 class User < ApplicationRecord
     validates :email, presence: true, uniqueness: true
+    validates :email, format: { with: URI::MailTo::EMAIL_REGEXP, message: 'must be a valid email address' }
 
-    # Relationship with LmsCredential
+    # Associasions
     has_many :lms_credentials, dependent: :destroy
+    has_many :user_to_courses
+    has_many :extensions
   end

spec/controllers/api/v1/users_controller_spec.rb

@@ -2,10 +2,45 @@
 module Api
   module V1
     describe UsersController do
-      describe 'create' do
-        it 'throws a 501 error' do
-          post :create
-          expect(response.status).to eq(501)
+      describe 'POST #create' do
+        context 'when creating a new user' do
+          it 'creates the user successfully' do
+            post :create, params: { email: '[email protected]' }
+
+            expect(response).to have_http_status(:created)
+            expect(JSON.parse(response.body)['message']).to eq('User created successfully')
+            expect(User.exists?(email: '[email protected]')).to be_truthy
+          end
+        end
+
+        context 'when user with the same email already exists' do
+          before do
+            User.create(email: '[email protected]')
+          end
+
+          it 'returns an error message' do
+            post :create, params: { email: '[email protected]' }
+
+            expect(response).to have_http_status(:conflict)
+            expect(JSON.parse(response.body)['message']).to eq('A user with this email already exists.')
+          end
+        end
+
+        context 'when email is missing or invalid' do
+          it 'returns an error when email is missing' do
+            post :create, params: { email: '' }
+
+            expect(response).to have_http_status(:unprocessable_entity)
+            expect(JSON.parse(response.body)['message']).to eq('Failed to create user')
+          end
+
+          it 'returns an error when email is invalid' do
+            # Assuming you add email format validation
+            post :create, params: { email: 'invalid-email' }
+
+            expect(response).to have_http_status(:unprocessable_entity)
+            expect(JSON.parse(response.body)['message']).to eq('Failed to create user')
+          end
         end
       end