using System;

using System.Collections.Generic;

using System.Text.Json;

using System.Text.Json.Serialization;

​

public class Program

{

    public static void Main()

    {

        try

        {

            var json = @"

                [

                    {

                        ""name"": ""General Info"",

                        ""url"": ""/Info"",

                        ""permissions"": [""financialReporting""]

                    },

                    {

                        ""name"": ""Settings"",

                        ""url"": ""/Settings"",

                        ""permissions"": [

                            ""Admin""

                        ]

                    }

                ]";

            Console.WriteLine(json);

            var menu = new Menu(json);

            Console.WriteLine("Deserialization success");

            menu.MenuItems.Dump();

        }

        catch (Exception ex)

        {

            Console.WriteLine($"Error: {ex.Message}");

        }

    }

}

​

public class Menu

{

    public Menu(string json)

    {

        var options = new JsonSerializerOptions 

        {

            Converters =

            {

                // using CamelCase here seems to deserialize both Pascal and CamelCase Enums values but can be removed

                new JsonStringEnumConverter(JsonNamingPolicy.CamelCase)

            },

            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,

            // or

            //PropertyNameCaseInsensitive = true 

        };

        var items = JsonSerializer.Deserialize<List<MenuItem>>(json, options);

        MenuItems = items.AsReadOnly();

    }

​

    public IReadOnlyList<MenuItem> MenuItems { get; }

}

​

public class MenuItem

{

    [JsonConstructor]

    public MenuItem

        (

            string name, 

            string url,

            IReadOnlyList<Permission> permissions

        )

    {

        this.Name = name;

        this.Url = url;

        this.Permissions = permissions ?? new List<Permission>().AsReadOnly();

    }

​

    public string Name { get; }

    public string Url { get; }

    public IReadOnlyList<Permission> Permissions { get; }

}

​

public enum Permission

{

    Admin,

    FinancialReporting

}