SwiftUI view for downloading an image from Firebase Storage using SDWebImageSwiftUI

FirebaseImage.swift

//
//  FirebaseImage.swift
//  AlumniStatusLounge
//
//  Created by Raphael Cerqueira on 23/02/21.
//

import SwiftUI
import FirebaseStorage
import SDWebImageSwiftUI

final class Loader: ObservableObject {
    @Published var url: URL?
    
    init(_ id: String) {
        let ref = Storage.storage().reference().child("images")
        ref.child(id).downloadURL { (url, error) in
            if let error = error {
                print("\(error)")
            }
            
            DispatchQueue.main.async {
                self.url = url
            }
        }
    }
}

struct FirebaseImage: View {
    @StateObject private var imageLoader: Loader
    
    init(id: String) {
        _imageLoader = StateObject(wrappedValue: Loader(id))
    }
    
    var body: some View {
        WebImage(url: imageLoader.url)
            .resizable()
            .aspectRatio(contentMode: .fill)
            .foregroundColor(.gray)
            .redacted(reason: imageLoader.url == nil ? .placeholder : .init())
    }
}

struct FirebaseImage_Previews : PreviewProvider {
    static var previews: some View {
        FirebaseImage(id: "image1")
    }
}