using Avalonia.Controls;
using Avalonia.Controls.Templates;
using Avalonia.Markup.Xaml.Templates;
using AI.Models.Form;

namespace AI.Converters
{
    /// <summary>
    /// 按表单字段类型选择模板，避免 Boolean 的 CheckBox 与 Choice 的 ComboBox 同屏时互相覆盖 CurrentValue（如列名 "0" 被写成 "False"）。
    /// </summary>
    public class FormFieldTemplateSelector : IDataTemplate
    {
        public DataTemplate? BooleanTemplate { get; set; }
        public DataTemplate? ChoiceTemplate { get; set; }
        public DataTemplate? DefaultTemplate { get; set; }

        public Control? Build(object? param)
        {
            if (param is not FormFieldEntry entry)
            {
                return null;
            }
            var template = entry.Type switch
            {
                FormFieldType.Boolean => BooleanTemplate,
                FormFieldType.Choice => ChoiceTemplate,
                _ => DefaultTemplate,
            };
            return template?.Build(param);
        }

        public bool Match(object? data) => data is FormFieldEntry;
    }
}