using System.Collections;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UIElements;
using Newtonsoft.Json;
using System.Collections.Generic;
using System.Globalization;

class FurnitureFetcher : MonoBehaviour
{
    public VisualTreeAsset itemTemplate;
    public UIDocument uiDocument;

    public static string API_URL = "http://100.123.31.103:5102/api/v1/FurnitureVariant/GetAll";

    private static readonly Dictionary<string, string> CurrencySymbols = new()
    {
        { "USD", "$" },
        { "EUR", "€" },
        { "GBP", "£" },
        { "JPY", "¥" },
        { "MXN", "$" },
        { "CAD", "$" },
        { "BRL", "R$" },
        { "ARS", "$" },
        { "CLP", "$" },
        { "COP", "$" },
        { "CNY", "¥" },
        { "INR", "₹" }
    };


    private void Awake()
    {
        StartCoroutine(GetFurnitureData());
    }

    IEnumerator GetFurnitureData()
    {
        using UnityWebRequest request = UnityWebRequest.Get(API_URL);
        request.downloadHandler = new DownloadHandlerBuffer();

        yield return request.SendWebRequest();

        string rawResponse = request.downloadHandler.text;
        //Debug.Log("📦 RAW RESPONSE:\n" + rawResponse);

        if (request.result == UnityWebRequest.Result.Success)
        {
            string wrappedJson = "{\"items\":" + rawResponse + "}";
            FurnitureVariantList list;

            try
            {
                list = JsonConvert.DeserializeObject<FurnitureVariantList>(wrappedJson);
            }
            catch (System.Exception ex)
            {
                Debug.LogError("❌ Error al deserializar JSON: " + ex.Message);
                yield break;
            }

            var root = uiDocument.rootVisualElement;
            var scrollView = root.Q<ScrollView>("furniture-list");

            scrollView.Clear();

            foreach (var variant in list.items)
            {
                VisualElement item = itemTemplate.CloneTree();
                item.Q<Label>("nameLabel").text = $"Name: {variant.name}";
                item.Q<Label>("colorLabel").text = $"Color: {variant.color}";
                item.Q<Label>("lineLabel").text = $"Line: {variant.line}";

                string currencySymbol = CurrencySymbols.TryGetValue(variant.currency, out string symbol)
                    ? symbol
                    : variant.currency;

                string formattedPrice = $"{currencySymbol}{variant.price.ToString("N2", CultureInfo.InvariantCulture)} {variant.currency}";
                item.Q<Label>("priceLabel").text = $"Price: {formattedPrice}";

                item.Q<Label>("stockLabel").text = $"Stock: {variant.stock}";

                var attributesContainer = item.Q<VisualElement>("attributesContainer");
                if (variant.attributes != null)
                {
                    string attributesText = "Attributes:\n";
                    foreach (var kvp in variant.attributes)
                    {
                        attributesText += $"{kvp.Key}: {kvp.Value}\n";
                    }
                    //Debug.Log(attributesText);
                    //Debug.Log($"--- ATRIBUTOS PARA: {variant.name} ---");
                    //Debug.Log($"Total keys: {variant.attributes.Count}");

                    int index = 0;
                    foreach (var kvp in variant.attributes)
                    {
                        //Debug.Log($"[{index}] {kvp.Key}: {kvp.Value}");

                        string formattedKey = FormatKey(kvp.Key);
                        Label attrLabel = new Label($"{formattedKey}: {kvp.Value}");
                        attrLabel.AddToClassList("furniture-attribute"); // estilo opcional
                        attrLabel.style.whiteSpace = WhiteSpace.Normal;
                        attributesContainer.Add(attrLabel);

                        index++;
                    }

                    if (index == 0)
                        Debug.Log("⚠️ El diccionario está vacío aunque no es null.");
                }
                else
                {
                    Debug.Log($"❌ 'attributes' es NULL para {variant.name}");
                }

                scrollView.Add(item);
            }
        }
        else
        {
            Debug.LogError("Error: " + request.error);
        }
    }

    private string FormatKey(string rawKey)
    {
        if (string.IsNullOrWhiteSpace(rawKey))
            return "";

        // Inserta espacio antes de mayúsculas
        string spaced = System.Text.RegularExpressions.Regex.Replace(rawKey, "([a-z])([A-Z])", "$1 $2");

        // Capitaliza primera letra
        return char.ToUpper(spaced[0]) + spaced.Substring(1);
    }
}