── scala-demo
   ├── app                                            # The Scala application source code
   │   ├── utils
   │   │   └── auth                                   # Authentication utils
   │   ├── domain
   │   │   ├── tables                                 # Slick tables
   │   │   │   ├── OrderTable.scala                   # Represents order table
   │   │   │   ├── OrderDetailTable.scala             # Represents order details table
   │   │   │   ├── ProductTable.scala                 # Represents products table
   │   │   │   └── UserTable.scala                    # Represents users table
   │   │   ├── models                                 # Models
   │   │   │   ├── Order.scala                        # Order model
   │   │   │   ├── OrderDetail.scala                  # OrderDetail model
   │   │   │   ├── Product.scala                      # Product model   
   │   │   │   └── User.scala                         # User model
   │   │   ├── daos                                   # Data access objects
   │   │   │   ├── DaoRunner.scala                    # Run Slick database actions by transactions
   │   │   │   ├── DbExecutionContext.scala           # Custom ExecutionContext for running DB connections
   │   │   │   ├── PasswordInfoDao.scala              # Password dao
   │   │   │   ├── PostDao.scala                      # Post dao
   │   │   │   └── UserDao.scala                      # User dao
   │   │   └── dtos                                   # Data transfer objects
   │   │       ├── request                            # Request dtos
   │   │       │   ├── LoginPostRequest.scala         # Request dto for login
   │   │       │   ├── OrderItemsRequest.scala        # Request dto for create/update order items
   │   │       │   ├── OrderPostRequest.scala         # Request dto for create order
   │   │       │   ├── OrderPutRequest.scala          # Request dto for update order
   │   │       │   ├── ProductPostRequest.scala       # Request dto for create/update product
   │   │       │   └── UserPostRequest.scala          # Request dto for create/update user
   │   │       └── response                           # Response dtos
   │   │           ├── OrderItemsResponse.scala       # Response dto for order items
   │   │           ├── OrderResponse.scala            # Response dto for order
   │   │           ├── ProductResponse.scala          # Response dto for product
   │   │           └── UserResponse.scala             # Response dto for user
   ├── httpclient                                     # Play modules
   │   │   ├── AbstractHttpClient.scala
   │   │   ├── ErrorResponse.scala
   │   │   ├── ExternalProductClient.scala
   │   │   └── ExternalServiceException.scala
   │   ├── system                                     # Play modules
   │   │   └── modules
   │   │       └── SilhouetteModule.scala             # Bind silhouette components
   │   └── controllers                                # Application controllers
   │       ├── AuthenticationController.scala         # Login/Register controllers
   │       ├── SilhouetteController.scala             # Abstract silhouette controller
   │       ├── ProductController.scala                # Product controllers for CRUD a product
   │       ├── OrderController.scala                  # Order controllers for CRUD an order
   │       └── UserController.scala                   # User controllers for CRUD an user
   ├── test                                           # Unit tests
   ├── it                                             # Integration tests
   ├── conf
   │   ├── evolutions                                 # Play evolutions SQL queries
   │   │   └── default                                # Default database
   │   │       └── 1.sql                              # Creates db tables
   │   ├── application.conf                           # Play configuration
   │   ├── default.conf                               # All aplication default configurations
   │   ├── routes                                     # Play routing
   │   ├── database.conf                              # Database configuration
   │   ├── httpclient.conf                            # Config for external API
   │   └── silhouette.conf                            # Silhouette configuration
   ├── postgresql
   │   └── postgresql.conf                            # PostgreSQL configuration
   ├── postman
   │   └── Scala.postman_collection.josn              # Postman collection
   ├── project
   ├── .gitignore
   ├── build.sbt
   ├── build.sc
   └── docker-compose.yml                             # Docker compose for PostgreSQL