ContentView.swift

struct ContentView: View {
    struct FileItem: Hashable, Identifiable, CustomStringConvertible {
        let id = UUID()
        var name: String
        var children: [FileItem]? = nil
        var description: String {
            switch children {
            case nil:
                return "📄 \(name)"
            case .some(let children):
                return children.isEmpty ? "📂 \(name)" : "📁 \(name)"
            }
        }
    }

    let fileHierarchyData: [FileItem] = [
      FileItem(name: "users", children:
        [FileItem(name: "user1234", children:
          [FileItem(name: "Photos", children:
            [FileItem(name: "photo001.jpg"),
             FileItem(name: "photo002.jpg")]),
           FileItem(name: "Movies", children:
             [FileItem(name: "movie001.mp4")]),
              FileItem(name: "Documents", children: [])
          ]),
         FileItem(name: "newuser", children:
           [FileItem(name: "Documents", children: [])
           ])
        ]),
        FileItem(name: "download", children: [
            FileItem(name: "document.pdf")
        ])
    ]


    var body: some View {
        List {
            ForEach(fileHierarchyData) { fileItem in
                Section {
                    OutlineGroup(fileItem.children ?? [FileItem](), children: \.children) { item in
                        Text("\(item.description)")
                    }
                } header: {
                    Text(fileItem.name)
                }
            }
        }
    }
}