my-files-sample/Modules/Sources/Browse/UI/View Modifiers/CreateFolderViewModifier.swift

//
//  CreateFolderViewModifier.swift
//  Browse
//
//  Created by Javier Cicchelli on 16/12/2022.
//  Copyright © 2022 Röck+Cöde. All rights reserved.
//

import DataModels
import KeychainStorage
import SwiftUI

struct CreateFolderViewModifier: ViewModifier {
    
    // MARK: Storages
    
    @KeychainStorage(key: .KeychainStorage.account) private var account: Account?
    
    // MARK: States
    
    @State private var folderName: String = ""
    @State private var showErrorAlert: Bool = false
    
    // MARK: Bindings
    
    @Binding var isPresenting: Bool
    
    let id: String
    let submitted: ActionClosure
    
    private let createFolder: CreateFolderUseCase = .init()
    
    // MARK: Body
    
    func body(content: Content) -> some View {
        content
            .background(InputAlertView(
                isPresenting: $isPresenting,
                title: .localise(key: "create_folder.input_alert.title"),
                message: .localise(key: "create_folder.input_alert.message"),
                textFieldPlaceholder: .localise(key: "create_folder.input_alert.text_field.placeholder"),
                textFieldString: $folderName,
                actions: [
                    .init(
                        title: .localise(key: "create_folder.input_alert.button.cancel"),
                        style: .cancel,
                        handler: { _ in
                            folderName = .empty
                        }
                    ),
                    .init(
                        title: .localise(key: "create_folder.input_alert.button.submit"),
                        style: .default,
                        handler: { _ in
                            Task {
                                await addFolder()
                            }
                        }
                    )
                ]
            ))
            .alert(isPresented: $showErrorAlert) {
                Alert(
                    title: Text(
                        "create_folder.system_alert.title",
                        bundle: .module
                    ),
                    message: Text(
                        "create_folder.system_alert.message",
                        bundle: .module
                    ),
                    dismissButton: .cancel(Text(
                        "create_folder.system_alert.button.cancel",
                        bundle: .module
                    )) {
                        folderName = .empty
                    }
                )
            }

    }

}

// MARK: - Helpers

private extension CreateFolderViewModifier {
    func addFolder() async {
        guard let account else {
            showErrorAlert = true
            return
        }
        
        do {
            _ = try await createFolder(
                id: id,
                name: folderName,
                username: account.username,
                password: account.password
            )
            
            folderName = .empty
            
            submitted()
        } catch {
            showErrorAlert = true
        }
    }
}