StoreSwift

StoreSwift is a streamlined library designed to facilitate undirectional data flow architecture.

The Challenges

No single architecture is perfectly suited for every application. Many architectures in iOS come with scalability challenges:

• MVC: Often completely violates the SOLID principles.
• MVP: The presenter can morph into a "God object," making it challenging to differentiate between side effect logic and business logic.
• VIPER/VIP: Shares similar issues with MVP, coupled with reduced readability.
• MVVM: Typically requires integration with Rx-like libraries and can be time-consuming to set up initially.
• Redux-style: Makes it simpler to understand the relationship between a View and business logic through undirectional data flow.

How to use

First you need to define a UseCase:

struct ProfileUseCase: UseCase {

    struct Props: Equatable {

        var isLoading = false
        var name: String?
        var error: String?
    }
    
    let profile: () async throws -> Profile
}

Then you need to define actions that view sends by calling store.send(.viewAppeared):

extension Action where U == ProfileUseCase {

    static let viewAppeared = Self {
        await $0.setProps(\.isLoading, true)
        do {
            let profile = try await $0.useCase.profile()
            await $0.setProps(\.name, profile.name)
        }
        catch {
            await $0.setProps(\.error, error.localizedDescription)
        }
        await $0.setProps(\.isLoading, false)
    }
}

Then simple use it in view:

@StateObject var store: Store<ProfileUseCase>
...
store.isLoading
...
store.send(.viewAppeared)
...
store.$state.sink { state in ... }

Simple to use.

Requirements

StoreSwift supports iOS 13 and up, and can be compiled with Swift 5.5 and up.

Installation

Swift Package Manager

The StoreSwift package URL is:

`https://github.com/alobanov11/StoreSwift`

License

StoreSwift is licensed under the Apache-2.0 Open Source license.

You are free to do with it as you please. We do welcome attribution, and would love to hear from you if you are using it in a project!