using ZB.MOM.WW.ScadaBridge.Commons.Types.Enums;

namespace ZB.MOM.WW.ScadaBridge.Commons.Entities.Templates;

public class TemplateAttribute
{
    /// <summary>
    /// Gets or sets the attribute ID.
    /// </summary>
    public int Id { get; set; }
    /// <summary>
    /// Gets or sets the template ID that owns this attribute.
    /// </summary>
    public int TemplateId { get; set; }
    /// <summary>
    /// Gets or sets the attribute name.
    /// </summary>
    public string Name { get; set; }
    /// <summary>
    /// Gets or sets the attribute value.
    /// </summary>
    public string? Value { get; set; }
    /// <summary>
    /// Gets or sets the data type of the attribute.
    /// </summary>
    public DataType DataType { get; set; }
    /// <summary>
    /// For <see cref="Enums.DataType.List"/> attributes: the scalar type of each
    /// element (String, Int32, Float, Double, Boolean, DateTime). Null for scalar
    /// attributes. The element type is fixed by the base attribute and cannot be
    /// changed on a derived template or instance override.
    /// </summary>
    public DataType? ElementDataType { get; set; }
    /// <summary>
    /// Gets or sets a value indicating whether the attribute is locked from override.
    /// </summary>
    public bool IsLocked { get; set; }
    /// <summary>
    /// Gets or sets the attribute description.
    /// </summary>
    public string? Description { get; set; }
    /// <summary>
    /// Gets or sets the data source reference for this attribute.
    /// </summary>
    public string? DataSourceReference { get; set; }

    /// <summary>
    /// True when this row was copied from the base template and has not been
    /// overridden on the derived template. Changes to the base flow downward
    /// for inherited rows; an explicit override flips this to false.
    /// Always false on base (non-derived) templates.
    /// </summary>
    public bool IsInherited { get; set; }

    /// <summary>
    /// Set on a base attribute. When true, derived templates may not override
    /// the value — the row is rendered readonly with a 🔒 in the derived UI,
    /// and any attempt to update it through the API is rejected.
    /// </summary>
    public bool LockedInDerived { get; set; }

    /// <summary>
    /// Initializes a new instance of the <see cref="TemplateAttribute"/> class with the specified name.
    /// </summary>
    /// <param name="name">The attribute name.</param>
    public TemplateAttribute(string name)
    {
        Name = name ?? throw new ArgumentNullException(nameof(name));
    }
}