items.swift

final class MoreItems: BasicCollection<Item> {
    init(for viewController: UIViewController) {
        let items: [Item] = [
            BasicItem(
                image: #imageLiteral(resourceName: "ImageProfilePlaceholder"),
                title: "Профиль",
                description: "",
                command: CommandToPerform{ [weak viewController] in
                    viewController?.navigationController?.pushViewController(Storyboard.More.profileViewController(), animated: true)
            }),
            {
                let title = "О нас"
                return BasicItem(
                    image: #imageLiteral(resourceName: "ImageMoreHand"),
                    title: title,
                    description: "",
                    command: CommandToPerform{ [weak viewController] in
                        let aboutViewController = Storyboard.Onboarding.demoAboutViewController()
                        aboutViewController.outsideDemoMode = true
                        aboutViewController.items = Array(MainScreenItems(for: aboutViewController))
                        aboutViewController.title = title
                        viewController?.navigationController?.pushViewController(aboutViewController, animated: true)
                })
            }(),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemo2"),
                title: "Тарифы",
                description: "",
                command: CommandToPerform{ [weak viewController] in
                    let navigationController = TelemedNavigationViewController()
                    navigationController.viewControllers = [Storyboard.More.plansViewController()]
                    viewController?.present(navigationController, animated: true, completion: nil)
            }),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemoFamily1"),
                title: "Способы оплаты",
                description: "",
                command: CommandToPerform{ [weak viewController] in
                    viewController?.navigationController?.pushViewController(Storyboard.More.paymentMethodsViewController(), animated: true)
            }),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageMoreContact"),
                title: "Связаться с нами",
                description: "",
                command: CommandToPerform{ [weak viewController] in
                    viewController?.navigationController?.pushViewController(SharedStoryboard.Shared.ContactUsViewController(), animated: true)
            }),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemo3"),
                title: "Часто задаваемые вопросы",
                description: "",
                command: CommandToPerform{ [weak viewController] in
                    viewController?.navigationController?.pushViewController(SharedStoryboard.Shared.FAQViewController(), animated: true)
            })
        ]
        
        super.init(origin: items)
    }
    
}

final class MainScreenItems: BasicCollection<Item> {
    init(for viewController: UIViewController) {
        let items: [Item] = [
        {
            let title = "Медицинская карта"
            return BasicItem(
                image: #imageLiteral(resourceName: "ImageDemo2"),
                title: "Медицинская карта",
                description: "Данные о здоровье вашей семьи в одном месте",
                command: CommandToPerform{ [weak viewController] in
                    let demoVC = Storyboard.Onboarding.demoAboutViewController()
                    demoVC.items = Array(MedicalInfoItems(for: demoVC))
                    demoVC.title = title
                    viewController?.navigationController?.pushViewController(demoVC, animated: true)
            })
            }()
        ]
        super.init(origin: items)
    }
}

final class DemoItems: BasicCollection<Item> {
    init(for viewController: UIViewController) {
        super.init(origin:
            [BasicItem(
                image: #imageLiteral(resourceName: "ImageDemo1"),
                title: "Врачи",
                description: "Видеоконсультации для вас и для вашей семьи",
                command: CommandToPerform{ [weak viewController] in
                    viewController?.navigationController?.pushViewController(Storyboard.Doctors.specializationsViewController(), animated: true)
            }),
             BasicItem(
                image: #imageLiteral(resourceName: "ImageDemo3"),
                title: "Часто задаваемые вопросы",
                description: "",
                command: CommandToPerform{ [weak viewController] in
                    viewController?.navigationController?.pushViewController(SharedStoryboard.Shared.FAQViewController(), animated: true)
             })] + MainScreenItems(for: viewController)
        )
    }
}

fileprivate final class MedicalInfoItems: BasicCollection<Item> {
    
    typealias LineNumber = Int
    private struct CommandToOpenMedicalInfo: Command {
        private let toPerform: CommandToPerform
        init(with viewController: UIViewController, at line: LineNumber) {
            toPerform = CommandToPerform { [weak viewController] in
                let textViewController = Storyboard.Onboarding.textInfoViewController()
                textViewController.text = AboutTexts.forTheme(.medicalInfo, index: line)
                viewController?.navigationController?.pushViewController(textViewController, animated: true)
            }
        }
        
        func execute() {
            toPerform.execute()
        }
    }
    
    init(for viewController: UIViewController) {
        
        let items: [Item] = [
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemoMedInfo1"),
                title: "Получение и загрузка данных",
                description: "",
                command: CommandToOpenMedicalInfo(with: viewController, at: 0)
            ),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemoMedInfo2"),
                title: "Хранение данных",
                description: "",
                command: CommandToOpenMedicalInfo(with: viewController, at: 1)
            ),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemoMedInfo3"),
                title: "Передача данных",
                description: "",
                command: CommandToOpenMedicalInfo(with: viewController, at: 2)
            ),
            BasicItem(
                image: #imageLiteral(resourceName: "ImageDemoMedInfo4"),
                title: "Конфиденциальность",
                description: "",
                command: CommandToOpenMedicalInfo(with: viewController, at: 3)
            )
        ]
        
        super.init(origin: items)
    }
}

protocol Command {
    func execute()
}

protocol Item {
    var image: UIImage { get }
    var title: String { get }
    var description: String { get }
    var command: Command { get }
}

class BasicItem: Item {
    let image: UIImage
    let title: String
    let description: String
    let command: Command
    init(image: UIImage, title: String, description: String, command: Command) {
        self.image = image
        self.title = title
        self.description = description
        self.command = command
    }
}

class CommandToPerform: Command {
    private let action: () -> ()
    init(_ action: @escaping () -> ()) {
        self.action = action
    }
    
    func execute() {
        action()
    }
}

//TODO: Maybe it's not the best implementation idea. Try creating CollectionOfItems protocol
class BasicCollection<T>: RandomAccessCollection {
    
    private let origin: Array<T>
    init<Base: Collection>(origin: Base) where Base.Iterator.Element == AnyCollection<T>.Iterator.Element {
        self.origin = Array(origin)
    }
    
    var startIndex: Array<T>.Index {
        return origin.startIndex
    }
    
    var endIndex: Array<T>.Index {
        return origin.endIndex
    }
    
    func index(after i: Array<T>.Index) -> Array<T>.Index {
        return origin.index(after: i)
    }
    
    func index(before i: Array<T>.Index) -> Array<T>.Index {
        return origin.index(before: i)
    }
    
    subscript(i: Array<T>.Index) -> T {
        get {
            return origin[i]
        }
    }
    
}