Sample of repository layer

Concepts

• Abstracts API request.
• Manages global stream.
• Rx-based reactive architecture.
• Easy to mock.
• Protocol oriented.

Units

ResponseDefinition (protocol)

• Defines structure of response.
• Single element, array element and empty response are supported.

See also: SingleResponse, ArrayResponse, EmptyResponse

Requirements

associatedtype Result

Type of element in response.

var result: Result

Actual element of response.

init(json: Any) throws

Initializes response from API response JSON.

• json: Any
  • JSON dictionary or array returned by API

SingleResponse<T: Decodable>

• Conforms to ResponseDefinition.
• Means the response contains simgle element of T.
• Type of result is T.

ArrayResponse<T: Decodeble>

• Conforms to ResponseDefinition
• Means the response contains multiple element of T
• Type of result is [T]

EmptyResponse

• Conforms to ResponseDefinition
• Means the response does not contain any element.
• Type of result is Void.

EndpointDefinition (protocol)

• Defines API endpoints.
• Equivalent to API documentation.

Requirements

associatedtype Response: ResponseDefinition

Indicates type of API response.

Ex:

typealias Response = ArrayResponse<User>

static var path: String

Path of endpoint.

Ex:

static var path: String = "/user/following"

static var environment: Environment

This property is used to switch environment partially. Default value is .production.
If you want to use other environment with only specific endpoint, you can override this property with value .mock or .staging.

var parameters: [String: Any]

Parameters to use in request. Default value is [:].

var method: HTTPMethod

Method to use in request.

Endpoint

Namespace to define endpoints which conforms to EndpointDefinition.

GenericRequest<Endpoint: EndpointDefinition>

Creates request object for APIKit with EndpointDefinition.
You do not have to create GenericRequest object manually.

Repository

Defines interface for higher-layer components such as ViewModels.