api for cashier app

app/controllers/api/authenticate_controller.rb

@@ -14,7 +14,32 @@ class Api::AuthenticateController < Api::ApiController
       end
     else
       render json: JSON.generate({:status => false, :error_message => "Input Parameters missing."})
+    end
+  end
 
+  def create_cashier
+    emp_id = params[:emp_id]
+    password = params[:password]
+
+    if emp_id && password
+      @employee = Employee.login(emp_id, password)
+      if @employee && @employee.role == "cashier"
+        if @employee.is_active
+          shift = ShiftSale.current_open_shift(@employee.id)
+          if !shift.nil?
+            render json: JSON.generate({:status => true, :session_token => @employee.token_session, :name => @employee.name, :role => @employee.role})
+          else
+            terminals = CashierTerminal.available.is_active
+            render json: JSON.generate({:status => true, :session_token => @employee.token_session, :name => @employee.name, :role => @employee.role, :error_message => "No current shift open for this employee!", :terminals => terminals.to_json})
+          end
+        else
+          render json: JSON.generate({:status => false, :error_message => "This employee is not active!"})
+        end 
+      else
+        render json: JSON.generate({:status => false, :error_message => "Bad Emp_ID or Password."})
+      end
+    else
+      render json: JSON.generate({:status => false, :error_message => "Input Parameters missing."})
     end
   end
 
@@ -22,10 +47,8 @@ class Api::AuthenticateController < Api::ApiController
     logout_status = Employee.logout(params[:session_token])
     if logout_status
       render json: JSON.generate({:status => true})
-
     else
       render json: JSON.generate({:status => false, :error_message => "Session Token Invalid or Missing"})
-
     end
   end