isaac-weisberg

import UIKit

protocol IImageProvider: AnyObject {
    func retrieve(_ completion: @escaping (UIImage?) -> Void)
    
    func preload()
}

protocol IImageProviderConsumer {
    var currentProvider: IImageProvider? { get set }

isaac-weisberg

import UIKit

class AutoscaleImageView: UIImageView {
    var aspectRatioConstraint: NSLayoutConstraint?

    override init(image: UIImage?) {
        super.init(image: image)
        recalculateAspectRatioConstraint()
    }

isaac-weisberg

struct ApartmentPlacement: Equatable {
    let entrance: Int
    let floor: Int
    let location: Int
}

func calculateApartmentPlacement(for apartmentNumber: Int, totalEntrances: Int, totalFloors: Int) -> ApartmentPlacement? {
    let apartmentIndex = apartmentNumber - 1
    guard totalEntrances > 0, totalFloors > 0 else {
        return nil

isaac-weisberg

class TransactionCellView: UIView {
    // ... other members omitted ...
    let acceptButton = TransactionCellAcceptButton()
    
    var iconToBottomConstraint: NSLayoutConstraint!
    var acceptButtonToBottomConstraint: NSLayoutConstraint!
    
    init(viewModel: TransactionCellViewModel) {
        // ... omitted configuration of the view style ...
        // ... omitted AutoLayout code ...

isaac-weisberg

protocol TransactionCellViewModel {
    var icon: String { get }
    var name: String { get }
    var amount: NSDecimalNumber { get }
    
    // Added in the following updates
    var shouldShowAcceptButton: Bool { get }
}

isaac-weisberg

class TransactionCellView: UIView {
    let iconImageView = UIImageView()
    let nameLabel = UILabel()
    let amountLabel = UILabel()
    
    init(viewModel: TransactionCellViewModel) {
        // ... omitted configuration of the view style ...
        
        // ... omitted AutoLayout code ...
        

isaac-weisberg

class TransactionTable: CustomTableView {
    override init(viewModel: TransactionTableViewModel) {
        super.init()
        
        viewModel.transactionViewModels.forEach { transactionViewModel in
            switch transactionViewModel {
            case .info(let viewModel):
                let cell = TransactionInfoCell(viewModel: viewModel)
                
                self.addCell(cell)

isaac-weisberg

class TransactionTableViewModel {
    // ... omitted ...
    init(di: DI) {
        self.transactionViewModels = di.transactionListService.getTransactionModels()
            .map { transactionModel -> TransactionCellViewModel in
                if transactionModel.isPendingAccept {
                    let viewModel = TransactionInfoWAcceptViewModel(model: transactionModel)

                    viewModel.acceptButtonTap
                        .map { _ in 

isaac-weisberg

enum TransactionCellViewModel {
    case info(TransactionInfoCellViewModel)
    case infoPendingAccept(TransactionInfoWAcceptViewModel)
}

isaac-weisberg

class TransactionTableViewModel {
    typealias DI = HasTransactionListService
    
    let transactionViewModels: [TransactionCellViewModel]
    
    class NavigationEvents {
        let showTransactionAcceptScreen = PublishRelay<String>()
    }
    let navigation = NavigationEvents()