using GermanApp.Domain.Entities;

namespace GermanApp.Application.DTOs;

/// <summary>
/// Data Transfer Object for Level - used for API responses.
/// This is a read-only representation of a Level entity.
/// </summary>
public record LevelDto(
    int Id,
    string Name,
    string Code,
    int Order);

/// <summary>
/// Data Transfer Object for creating a new Level.
/// </summary>
public record CreateLevelDto(
    string Name,
    string Code,
    int Order);

/// <summary>
/// Data Transfer Object for updating an existing Level.
/// </summary>
public record UpdateLevelDto(
    string Name,
    string Code,
    int Order);

/// <summary>
/// Extension methods for mapping between Level entity and DTOs.
/// </summary>
public static class LevelDtoExtensions
{
    public static LevelDto ToDto(this Level level) => new(
        level.Id,
        level.Name,
        level.Code,
        level.Order);

    public static Level ToEntity(this CreateLevelDto dto) =>
        Level.Create(dto.Name, dto.Code, dto.Order);

    public static void UpdateFromDto(this Level level, UpdateLevelDto dto)
    {
        level.UpdateName(dto.Name);
        level.UpdateCode(dto.Code);
        level.UpdateOrder(dto.Order);
    }
}