EVENT DRIVEN MVVM

Home(m).swift

import Common

// HOME MODEL

class HomeViewItem: ViewItem<HomeResponse> {
    
    // #MARK: Configurate Bar Button items...
    
    override var bars: Bars {
        [
            .left(items: [
                .style(.image(.add, weakify(self) {
                    $0.move(by: .test($0.data))
                }))
            ]),
            .title(text: "\(data.name)"),
            .right(items: [
                .style(.image(.checkmark, weakify(self, {
                    $0.move(by: .test(id: $0.data.id))
                }))),
                .style(.image(.remove, weakify(self, {
                    $0.move(by: .test(id: $0.data.id))
                }))),
            ]),
        ]
    }
    
    // #MARK: Configurate Table or Collection Sections ...
    
    override var sections: Sections {
        
        let s1 = Section(items: [
            
            ImageLabelItem(v1: .add,
                           v2: data.name)
                .onSelect { element in
                    
                }.isHidden { element in
                    element.isHidden
                },
            
            LoadingItem(active: data.cards.isEmpty)
                .isHidden { element in
                    return element.isHidden
                },
            
            GridItem(items: data.cards.map { card in
                card
                    .map()
                    .onSelect { element in
                        self.move(by: .card(card))
                    }.isHidden { element in
                        element.isHidden
                    }
            }),
        ])
        
        let s2 = Section (items: [
            
            LoadingItem(active: data.templates.isEmpty)
                .isHidden { element in
                    return element.isHidden
                },
            
            GridItem(items: data.templates.map { template in
                template
                    .map()
                    .onSelect { element in
                        self.move(by: .template(template))
                    }.isHidden { element in
                        element.isHidden
                    }
            }),
        ])
        
        return [ s1, s2 ]
    }
    
    // #MARK: Configurate bottom action items...
    
    override var buttons: Buttons {
        [
            .style(.fillPrimary("Enter as \(data.name)", {
                print("selection event here...")
            })),
            .style(.fillSecondary("Register", {
                print("selection event here...")
            }))
        ]
    }
}

Home(v).swift

import Common

// HOME VIEW

class HomeCollectionView: CollectionViewType<HomeViewItem> {
    override func render(state: ViewState<HomeViewItem>) -> Self {
        switch state {
        case let .loaded(model):
            super.render(state: state)
            print("/*****")
            print(model.data.name)
            print("*****/")
        case _:
            super.render(state: state)
        }
        return self
    }
}

Home(vm).swift

import Common

// HOME VIEW MODEL

class HomeViewModel: ViewModel<HomeViewItem> {
    @discardableResult
    override func requestUser(_ completion: @escaping Completion<HomeResponse> = { _ in }) -> Self {
        onViewDidLoad { v in
            super.requestUser(weakify(self) {
                $0.render(state: $1)
            })
        }.onViewDidAppear { v in
            /// customize view here, or do what you wanna do...
            v.view.backgroundColor = .red  // ->>>> example
        }.onViewWillAppear { v in
            /// customize view here, or do what you wanna do...
        }.onViewDidLayoutSubviews { v in
            /// customize view here, or do what you wanna do...
        }
    }
}

Home(z).swift

import Common

// MVVM USAGE...
extension HomeView {
    static var view: HomeView {
        let m = HomeViewItem()       // ---> m
        let v = HomeView()           // ---> v
        let _ = HomeViewModel(m)     // ---> vm
            .subscribe(v: v)
            .requestUser()
        return v
    }
}