using System.Xml.Serialization;

namespace XSDVisualiser.Core;

/// <summary>
///     Represents an element or complex content node in the schema.
/// </summary>
public class SchemaNode
{
    [XmlAttribute] public string? Name { get; set; }

    [XmlAttribute] public string? Namespace { get; set; }

    [XmlAttribute] public string? TypeName { get; set; }

    [XmlAttribute] public string? BuiltInType { get; set; }

    [XmlAttribute] public bool IsNillable { get; set; }

    [XmlElement] public Occurs Cardinality { get; set; } = new();

    [XmlElement] public ConstraintSet? Constraints { get; set; }

    [XmlArray("Attributes")]
    [XmlArrayItem("Attribute")]
    public List<AttributeInfo> Attributes { get; set; } = new();

    [XmlArray("Children")]
    [XmlArrayItem("Element")]
    public List<SchemaNode> Children { get; set; } = new();

    /// <summary>
    ///     Content model for this node: sequence | choice | all | simple. For synthetic group nodes, may be "group".
    /// </summary>
    [XmlAttribute] public string? ContentModel { get; set; }

    /// <summary>
    ///     Human-readable documentation extracted from xsd:annotation/xsd:documentation.
    ///     Prefer element-level documentation; falls back to type-level documentation.
    /// </summary>
    [XmlElement]
    public string? Documentation { get; set; }

    /// <summary>
    ///     Returns a human-readable name for UI elements (prefers Name, then TypeName).
    /// </summary>
    public override string ToString()
    {
        if (!string.IsNullOrEmpty(Name)) return Name!;
        if (!string.IsNullOrEmpty(TypeName)) return TypeName!;
        return base.ToString();
    }
}