using System.Text.Json;
using System.Text.Json.Serialization;

namespace Library;

public class Employee
{
    public string Id { get; set; }
    public string Code { get; set; }
    public string Surname { get; set; }
    public string Forename { get; set; }
    public string Email { get; set; }
    public string Phone { get; set; }
    public string Street { get; set; }
    public string City { get; set; }
    public string Postcode { get; set; }
    public string Country { get; set; }
    public string Department { get; set; }
    public string Position { get; set; }
    public EmployeeState EmployeeState { get; set; }

    public Employee() { }

    public Employee(string code, string surname, string forename, string email)
    {
        Id = Guid.NewGuid().ToString();
        Code = code;
        Surname = surname;
        Forename = forename;
        Email = email;
    }

    /// <summary>
    /// Serialisiert dieses Employee-Objekt in einen JSON-String (nur öffentliche Eigenschaften).
    /// </summary>
    public string ToJson()
    {
        var options = new JsonSerializerOptions
        {
            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
        };
        return JsonSerializer.Serialize(this, options);
    }

    /// <summary>
    /// Deserialisiert aus dem JSON-String ein neues Employee-Objekt (öffentliche Eigenschaften).
    /// </summary>
    public static Employee FromJson(string json)
    {
        var options = new JsonSerializerOptions
        {
            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
        };
        return JsonSerializer.Deserialize<Employee>(json, options)
               ?? throw new InvalidOperationException("Deserialization to Employee failed.");
    }
}