using System;
using UnityEngine;

namespace Dialogue
{
    /// <summary>
    /// Content type for dialogue entries
    /// </summary>
    public enum DialogueContentType
    {
        Text,
        Image
    }

    /// <summary>
    /// Wrapper class for dialogue content that can be either text or image
    /// </summary>
    [Serializable]
    public class DialogueContent
    {
        [SerializeField] private DialogueContentType _contentType = DialogueContentType.Text;
        [SerializeField] private string _text = string.Empty;
        [SerializeField] private Sprite _image = null;
        
        /// <summary>
        /// The type of content this entry contains
        /// </summary>
        public DialogueContentType ContentType => _contentType;
        
        /// <summary>
        /// The text content (valid when ContentType is Text)
        /// </summary>
        public string Text => _text;
        
        /// <summary>
        /// The image content (valid when ContentType is Image)
        /// </summary>
        public Sprite Image => _image;
        
        /// <summary>
        /// Create text content
        /// </summary>
        /// <param name="text">The text to display</param>
        public static DialogueContent CreateText(string text)
        {
            return new DialogueContent 
            { 
                _contentType = DialogueContentType.Text, 
                _text = text 
            };
        }
        
        /// <summary>
        /// Create image content
        /// </summary>
        /// <param name="image">The image to display</param>
        public static DialogueContent CreateImage(Sprite image)
        {
            return new DialogueContent 
            { 
                _contentType = DialogueContentType.Image, 
                _image = image 
            };
        }
        
        /// <summary>
        /// Returns a string representation of this content
        /// </summary>
        public override string ToString()
        {
            return ContentType == DialogueContentType.Text 
                ? $"Text: {_text}" 
                : $"Image: {_image?.name ?? "None"}";
        }
    }
}