using System;
using System.Reflection;
using Unosquare.Swan.Attributes;

namespace Unosquare.Swan.Reflection {
  /// <summary>
  /// Represents a Property object from a Object Reflection Property with extended values.
  /// </summary>
  public class ExtendedPropertyInfo {
    /// <summary>
    /// Initializes a new instance of the <see cref="ExtendedPropertyInfo"/> class.
    /// </summary>
    /// <param name="propertyInfo">The property information.</param>
    public ExtendedPropertyInfo(PropertyInfo propertyInfo) {
      if(propertyInfo == null) {
        throw new ArgumentNullException(nameof(propertyInfo));
      }

      this.Property = propertyInfo.Name;
      this.DataType = propertyInfo.PropertyType.Name;

      foreach(PropertyDisplayAttribute display in Runtime.AttributeCache.Retrieve<PropertyDisplayAttribute>(propertyInfo, true)) {
        this.Name = display.Name;
        this.Description = display.Description;
        this.GroupName = display.GroupName;
        this.DefaultValue = display.DefaultValue;
      }
    }

    /// <summary>
    /// Gets or sets the property.
    /// </summary>
    /// <value>
    /// The property.
    /// </value>
    public String Property {
      get;
    }

    /// <summary>
    /// Gets or sets the type of the data.
    /// </summary>
    /// <value>
    /// The type of the data.
    /// </value>
    public String DataType {
      get;
    }

    /// <summary>
    /// Gets or sets the value.
    /// </summary>
    /// <value>
    /// The value.
    /// </value>
    public Object Value {
      get; set;
    }

    /// <summary>
    /// Gets or sets the default value.
    /// </summary>
    /// <value>
    /// The default value.
    /// </value>
    public Object DefaultValue {
      get;
    }

    /// <summary>
    /// Gets or sets the name.
    /// </summary>
    /// <value>
    /// The name.
    /// </value>
    public String Name {
      get;
    }

    /// <summary>
    /// Gets or sets the description.
    /// </summary>
    /// <value>
    /// The description.
    /// </value>
    public String Description {
      get;
    }

    /// <summary>
    /// Gets or sets the name of the group.
    /// </summary>
    /// <value>
    /// The name of the group.
    /// </value>
    public String GroupName {
      get;
    }
  }

  /// <summary>
  /// Represents a Property object from a Object Reflection Property with extended values.
  /// </summary>
  /// <typeparam name="T">The type of the object.</typeparam>
  public class ExtendedPropertyInfo<T> : ExtendedPropertyInfo {
    /// <summary>
    /// Initializes a new instance of the <see cref="ExtendedPropertyInfo{T}"/> class.
    /// </summary>
    /// <param name="property">The property.</param>
    public ExtendedPropertyInfo(String property)
        : base(typeof(T).GetProperty(property)) {
    }
  }
}