Avito

Project Description:

The project includes paginated product loading, a convenient search with filtering capabilities, image caching for fast loading, and a smooth shimmer effect when loading data.
It implements search query history saving, empty-state handling when no products are available or in case of a loading error, a detailed product card, and a user-friendly shopping list
with the ability to save, delete, and share products. Additionally, test support is provided to ensure the stability and reliability of the application.

Design

Figma Prototype

Architecture:

SVIP (VIPER):

• View – Displays the interface and interacts with the user.
• Interactor – Contains the business logic of the application.
• Presenter – Prepares data for the user interface and implements the Router.
• Router – Manages screen transitions.
• Worker – Handles data processing and network requests.

More details about the architectural pattern: Article

Technologies

• Swift
• UIKit | UIView+Pin
• URLSession
• GCD
• UserDefaults | CoreData
• NSCache
• SOLID
• XCTest

Functionality:

1. Search Screen (Product Listing) ✅

• Paginated product list
• Grid view display (2 products per row)
• Ability to filter products by category or price range
• Text search with the last 7 unique queries saved
• Empty-state when no products are available and error-state for loading failures
• Shimmer effect when loading images
• Navigation to the product card

2. Product Card ✅

• Displays image, title, description, price, and category
• Placeholder in case of image loading failure
• Ability to add the product to the shopping list
• Navigation to the shopping list
• Ability to increase/decrease product quantity
• Ability to share the product
• Return to the search screen

3. Shopping List ✅

• Displays added products with images, prices, and quantities
• Ability to change the quantity or remove a product
• Persistent shopping list across sessions
• Option to clear the entire list
• State synchronization with the search screen and product cards
• "Share" function to send the shopping list via messenger or notes
• Navigation to the product card

Testing

The project includes XCTest tests

• Unit tests implemented for business logic in separate modules

Running the Project

1. git clone [email protected]:2Gpb/TestTaskAvito.git
2. Open TestTaskAvito.xcodeproj in Xcode
3. Run the project

Visual