High-Level Architecture
Relevant source files
The following files were used as context for generating this wiki page:
The Social-Connect application is a Swift-based iOS platform designed for social networking interactions. Its architecture follows a modular service-oriented approach, separating concerns between application lifecycle management, external communication, user-specific business logic, and secure data storage.
The system is built to handle complex entry points such as deep links, which are processed through a dedicated handler and dispatched to the appropriate services. Core functionalities include user relationship management (following/unfollowing) and secure authentication token handling via the iOS Keychain.
Core Components and System Structure
The architecture is composed of several specialized layers that interact to fulfill user requests.
Component Overview
| Component | Responsibility | Primary Files |
|---|---|---|
| App Entry & Lifecycle | Handles application launch and system-level events. | AppDelegate.swift |
| Deep Link Routing | Parses incoming URLs and routes them to specific features like profiles or posts. | DeepLinkHandler.swift |
| Business Logic Layer | Manages user-centric actions such as following/unfollowing. | UserService.swift |
| Network Layer | Handles low-level HTTP communication and REST API interactions. | APIClient.swift |
| Security Layer | Manages sensitive data such as authentication tokens. | KeychainManager.swift |
Sources: AppDelegate.swift:3-5, DeepLinkHandler.swift:3-5, UserService.swift:3-6, APIClient.swift:3-6, KeychainManager.swift:4-7
Static Structure Diagram
The following class diagram illustrates the relationships between the primary architectural components:
Networking and Data Flow
The application communicates with a backend located at https://api.socialconnect.com/v1/. All requests are centralized through the APIClient, which ensures consistent header management and authentication.
Authentication Flow
Requests made via the APIClient automatically attempt to include a Bearer token. This token is retrieved from the KeychainManager using the account key authToken.
if let token = KeychainManager.shared.getAuthToken() {
request.addValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
}
Sources: APIClient.swift:4-5, 20-22, KeychainManager.swift:11-15
User Action Sequence
When a user performs an action (such as following another user via a deep link), the request flows through the system as shown below:
Deep Link Handling
The system supports a variety of navigation hosts through its DeepLinkHandler. This component is responsible for parsing URL components and extracting parameters like userId.
Supported Routes
| Host | Action | Data Required |
|---|---|---|
profile | Navigates to a user's profile page. | userId |
follow | Triggers a follow action via UserService. | userId |
message | Opens messaging interface. | N/A |
post | Displays a specific post. | N/A |
Sources: DeepLinkHandler.swift:15-28
Secure Storage Implementation
The KeychainManager abstracts the complexities of the iOS Security framework. It uses the kSecClassGenericPassword class to store and retrieve sensitive authentication data.
Sources: KeychainManager.swift:9-25
Conclusion
The Social-Connect architecture is defined by its clean separation of concerns and robust handling of external triggers like deep links. By centralizing networking in the APIClient and security in the KeychainManager, the application ensures that business logic in the UserService remains decoupled from implementation details. The use of NotificationCenter for status changes (e.g., .userFollowStatusChanged) allows for a reactive UI that stays in sync with service-level data changes.