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danielrbrowne/APIota
APIota is a lightweight Swift library for defining REST API clients for use in iOS, macOS, tvOS, watchOS and Linux apps.
.package(url: "https://github.com/danielrbrowne/APIota.git", from: "0.2.0")

APIota

APIota

CI Status Latest Release API Docs Supported Platforms Swift Versions LICENSE

APIota is a lightweight Swift library for defining API clients for use in iOS, macOS, tvOS, watchOS or Linux. It is written using a protocol-oriented approach, and allows your Codable model objects to be decoded from JSON REST API endpoints really easily!

Supported platforms

  • iOS
  • macOS
  • tvOS
  • watchOS * (see note below)
  • Linux

NOTE:

  • watchOS support is available as a user of the APIota library. However, building directly from source fails currently due to XCTest not being available on watchOS.

Supported Swift language versions and build tools

  • Swift 5.2 or higher
  • Xcode 11.4 or higher

Features

  • ☑ JSON request and response body encoding and decoding support when using Codable model objects.
    • Encoding and decoding strategies can be customized by supplying configured JSONEncoder or JSONDecoder instances.
  • Combine support (when building against iOS 13.0+, macOS 10.15+, tvOS 13.0+ or watchOS 6.0+).
  • ☑ URL-encoded form data request support.

Installation

Using Swift Package Manager

Simply add the following to the dependencies array in your Package.swift file:

dependencies: [
    …
    .package(url: "https://github.com/danielrbrowne/APIota", from: "0.2.0"),
    …
  ]

Usage

At its core, defining API clients using APIota is very straightforward. There are two protocols, APIotaClient and APIotaCodableEndpoint which form the foundations of the library.

The first step is to define an object specifying the base URL (i.e. the host in terms of an instance of URLComponents) for the REST API with which you are going to communicate with. An example is shown below:

struct JSONPlaceholderAPIClient: APIotaClient {

    let session = URLSession.shared

    let decoder = JSONDecoder()

    var baseUrlComponents: URLComponents = {
        var components = URLComponents()
        components.host = "jsonplaceholder.typicode.com"
        components.scheme = "https"

        return components
    }()
}

The next step is to define the endpoint that the requests should be sent to. An example of a simple GET request is shown below, however more complex requests can also be defined easily:

struct JSONPlaceholderGetTodosEndpoint: APIotaCodableEndpoint {
    typealias SuccessResponse = [Todo]
    typealias ErrorResponse = MyDecodableError
    typealias Body = MyEncodableBody

    let headers: HTTPHeaders? = nil

    let httpBody: Body? = nil

    let httpMethod: HTTPMethod = .GET

    let path = "/todos"

    let queryItems: [URLQueryItem]? = nil
}

Requests can then be sent to REST API via an instance of the Client as follows:

…
private static let apiClient = TestAPIClient()
private(set) lazy var cancellable: AnyCancellable? = nil
private var todosList: [Todo] = []
…

// Example 1: API response returned via a callback closure

let endpoint = JSONPlaceholderGetTodosEndpoint()
Self.apiClient.sendRequest(for: endpoint) { result in
    // Handle the returned `Result<T.Response, Error>`
    switch result {
    case .success(let todosList):
        self.todosList = todosList
    case .failure(let error):
        // Handle the error returned from the API Client
    }
}

// Example 2: API response returned via a Combine publisher

let endpoint = JSONPlaceholderGetTodosEndpoint()
cancellable = Self.apiClient.sendRequest(for: endpoint)
    .catch({ error in
        // Handle the error returned from the API Client
    })
    .assign(to: \.todosList, on: self)
}

Documentation and References

Full documentation of APIota can be found in the API docs.

A practical example of APIota in action can be found in the Example Project.

Reporting bugs and requesting features

Please ensure you use the relevant issue template when reporting a bug or requesting a new feature. Also please check first to see if there is an open issue that already covers your bug report or new feature request.

Feature roadmap

In no particular order, and as a draft proposal:

  • ☐ Automatic Content-Type header inference for requests.
  • ☐ Customizable request parameter encoding strategies.
  • ☐ Configurable response caching for requests.
  • ☐ Multipart form data support.
  • ☐ Configurable request retrying.
  • ☐ Request authentication challenge handling.
  • ☐ Comprehensive test coverage.
  • ☐ Cocoapods support.

License

APIota is completely open source and released under the MIT license. See LICENSE.md for details if you want to use it in your own project(s).

GitHub

link
Stars: 1
Last commit: 3 weeks ago

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iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.

Release Notes

0.2.0: Linux support and error reporting improvements
4 weeks ago

ADDED:

  • Linux support (and other supported platform improvements) (#27)
  • Return the HTTP error response body when a request fails (#28)
  • Error reporting improvements (#29)

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API