Model driven API Client
IQAPIClient allows us to make API requests and get back the responses in your defined model objects.
| Library | Language | Minimum iOS Target | Minimum Xcode Version |
|---|---|---|---|
| IQAPIClient | Swift | iOS 10.0 | Xcode 11 |
5.0 and above
IQAPIClient is available through CocoaPods. To install it, simply add the following line to your Podfile:
pod 'IQAPIClient'Or you can choose the version you need based on the Swift support table from Requirements
pod 'IQAPIClient', '1.0.0'
Drag and drop IQAPIClient directory from demo project to your project
Swift Package Manager(SPM) is Apple's dependency manager tool. It is now supported in Xcode 11. So it can be used in all appleOS types of projects. It can be used alongside other tools like CocoaPods and Carthage as well.
To install IQAPIClient package into your packages, add a reference to IQAPIClient and a targeting release version in the dependencies section in Package.swift file:
import PackageDescription
let package = Package(
name: "YOUR_PROJECT_NAME",
products: [],
dependencies: [
.package(url: "https://github.com/hackiftekhar/IQAPIClient.git", from: "1.0.0")
]
)To install IQAPIClient package via Xcode
- Go to File -> Swift Packages -> Add Package Dependency...
- Then search for https://github.com/hackiftekhar/IQAPIClient.git
- And choose the version you would like
Well, we'll have to do an initial configuration before using IQAPIClient like setting your API base urls and default headers etc. You can do it in your AppDelegate.
IQAPIClient.baseURL = URL(string: "https://www.example.com/api/v1")
IQAPIClient.httpHeaders["Content-Type"] = "application/json"
IQAPIClient.httpHeaders["Accept"] = "application/json"Now let's say you have an API which returns the list of users and you have a User model for that.
struct User {
let id: Int
let name: String
let email: String?
}Now first, we need to modify our model to make it compatible to the IQAPIClient. To do this, we only have to confirm our User Model with the Decodable protocol and that's it.
// Now it's ready to be used with IQAPIClient
struct User: Decodable {
let id: Int
let name: String
let email: String?
}static func sendRequest<Success>(
path: String,
method: HTTPMethod = .get,
parameters: Parameters? = nil,
completionHandler: @escaping
(_ result: Swift.Result<Success, Error>) -> Void)where native Swift.Result looks like this
enum Result<Success, Failure> where Failure: Error {
case success(Success) /// A success, storing a `Success` value.
case failure(Failure) /// A failure, storing a `Failure` value.
}static func sendRequest<Success, Failure>(
path: String,
method: HTTPMethod = .get,
parameters: Parameters? = nil,
completionHandler: @escaping
(_ result: IQAPIClient.Result<Success, Failure>) -> Void)where IQAPIClient.Result looks like this
enum Result<Success, Failure> {
case success(Success) /// A success, storing a `Success` value.
case failure(Failure) /// A failure, storing a `Failure` value.
case error(Error) /// An error, storing an `Error` value.
}To get list of users, there are a couple of ways you could use IQAPIClient.
class ViewController: UIViewController {
private func getUsersList() {
//Result<[User], NSError> detects that the app is asking for array of User object
IQAPIClient.sendRequest(path: "/users") { [weak self] (result: Swift.Result<[User], NSError>) in
switch result {
case .success(let users):
self?.users = users
self?.refreshUI()
case .failure(let error):
//Show error alert
print(error.localizedDescription)
}
}
}
}Let's say APIMessage looks like below and we get this kind of response when something goes wrong
struct APIMessage: Decodable {
let status: Bool
let code: Int
let message: String
}class ViewController: UIViewController {
private func getUsersList() {
//Result<[User], NSError> detects that the app is asking for array of User object
IQAPIClient.sendRequest(path: "/users") { [weak self] (result: Swift.Result<[User], APIMessage>) in
switch result {
case .success(let users): //[User] object
self?.users = users
self?.refreshUI()
case .failure(let message): //APIMessage object
//Show failure alert
print(message.code)
print(message.message)
case .error(let error): //Error object
//Show error alert
print(error.localizedDescription)
}
}
}
}extension IQAPIClient {
@discardableResult
static func getUsersList(completionHandler: @escaping (_ result: Swift.Result<User, NSError>) -> Void) -> DataRequest {
return sendRequest(path: "/users", completionHandler: completionHandler)
}
}Method 3: If you don't have a Model yet, then you could also get the response in the form of Array of Dictionary like below:-
extension IQAPIClient {
@discardableResult
static func getUsersList(completionHandler: @escaping (_ result: Swift.Result<[[String:Any]], NSError>) -> Void) -> DataRequest {
return sendRequest(path: "/users", completionHandler: completionHandler)
}
}
class ViewController: UIViewController {
private func getUsersList() {
//Now use the getUsersList function
IQAPIClient.getUsersList { [weak self] result in
switch result {
case .success(let users):
self?.users = users
self?.refreshUI()
case .failure(let error):
//Show error alert
print(error.localizedDescription)
}
}
}
}- successSound: Bool = false //A success sound/vibration will be played on success response, you could use it when you create some records like saving something in the server.
- failedSound: Bool = false //An error sound/vibration will be played on error
- executeErroHandlerOnError: Bool = true //This will also execute common error handler block on error to handle all error from a single place.
//TODO to add examples
Distributed under the MIT License.
Any contribution is more than welcome! You can contribute through pull requests and issues on GitHub.
If you wish to contact me, email me: [email protected]
