import React, { useState, useEffect } from "react";
import GameDataManager from "../../../services/GameDataManager.js";
import "./styles/ItemListTab.css";

const ItemListTab = () => {
  const [allItems, setAllItems] = useState([]);
  const [filteredItems, setFilteredItems] = useState([]);
  const [searchQuery, setSearchQuery] = useState("");
  const [selectedCategory, setSelectedCategory] = useState("all");
  const [selectedItem, setSelectedItem] = useState(null);

  const ASSET_BASE_URL = "http://localhost:5003/static/";

  useEffect(() => {
    const itemsArray = Array.from(GameDataManager.items.keys()).map((id) =>
      GameDataManager.getItem(id),
    );
    setAllItems(itemsArray);
    setFilteredItems(itemsArray);
  }, []);

  useEffect(() => {
    let result = allItems;

    if (selectedCategory !== "all") {
      result = result.filter(
        (item) => item.meta?.category === selectedCategory,
      );
    }

    if (searchQuery) {
      const q = searchQuery.toLowerCase();
      result = result.filter(
        (item) =>
          item.displayName.toLowerCase().includes(q) ||
          item.id.toLowerCase().includes(q),
      );
    }

    setFilteredItems(result);
  }, [searchQuery, selectedCategory, allItems]);

  const getFullTextureUrl = (path) => {
    if (!path) return "/assets/no-image.png";
    return path.startsWith("http") ? path : `${ASSET_BASE_URL}${path}`;
  };

  const categories = [
    "all",
    ...new Set(allItems.map((i) => i.meta?.category).filter(Boolean)),
  ];

  return (
    <div className="item-list-container">
      <div className="item-list-sidebar">
        <div className="search-box">
          <i className="fas fa-search"></i>
          <input
            type="text"
            placeholder="FILTER_BY_DATABASE_ID..."
            value={searchQuery}
            onChange={(e) => setSearchQuery(e.target.value)}
          />
        </div>

        <div className="category-filters">
          {categories.map((cat) => (
            <button
              key={cat}
              className={`filter-btn ${selectedCategory === cat ? "active" : ""}`}
              onClick={() => setSelectedCategory(cat)}
            >
              {cat.toUpperCase()}
            </button>
          ))}
        </div>

        <div className="items-list-scroll">
          {filteredItems.map((item) => (
            <div
              key={item.id}
              className={`item-row ${selectedItem?.id === item.id ? "selected" : ""} ${item.meta?.rarity}`}
              onClick={() => setSelectedItem(item)}
            >
              <div className="item-row-icon">
                <img src={getFullTextureUrl(item.texture)} alt="" />
              </div>
              <div className="item-row-content">
                <div className="item-row-title">{item.displayName}</div>
                <div className="item-row-subtitle">{item.id}</div>
              </div>
              <div className="item-row-rarity-indicator"></div>
            </div>
          ))}
          {filteredItems.length === 0 && (
            <div className="no-results">NO_RECORDS_FOUND</div>
          )}
        </div>
      </div>

      <div className="item-inspector">
        {selectedItem ? (
          <div className="inspector-content">
            <div className={`inspector-header ${selectedItem.meta?.rarity}`}>
              <div className="header-visual">
                <img src={getFullTextureUrl(selectedItem.texture)} alt="" />
              </div>
              <div className="header-info">
                <div className="id-tag">{selectedItem.id}</div>
                <h1>{selectedItem.displayName}</h1>
                <div className="rarity-label">
                  {selectedItem.meta?.rarity?.toUpperCase()}
                </div>
              </div>
            </div>

            <div className="inspector-grid">
              <div className="inspector-section main-desc">
                <div className="section-title">DATA_DESCRIPTION</div>
                <p>{selectedItem.description}</p>
              </div>

              {selectedItem.stats &&
                Object.keys(selectedItem.stats).length > 0 && (
                  <div className="inspector-section stats">
                    <div className="section-title">PARAMETER_READOUT</div>
                    <div className="stat-pills">
                      {Object.entries(selectedItem.stats).map(([k, v]) => (
                        <div key={k} className="stat-pill">
                          <span className="p-label">
                            {GameDataManager.getStatName(k)}
                          </span>
                          <span className="p-value">+{v}</span>
                        </div>
                      ))}
                    </div>
                  </div>
                )}

              <div className="inspector-section meta">
                <div className="section-title">OBJECT_METADATA</div>
                <div className="meta-list">
                  <div className="meta-item">
                    <span>CATEGORY</span>
                    <span>{selectedItem.meta?.category || "general"}</span>
                  </div>
                  <div className="meta-item">
                    <span>EQUIP_SLOT</span>
                    <span>{selectedItem.meta?.equipmentSlot || "none"}</span>
                  </div>
                  <div className="meta-item">
                    <span>STACK_LIMIT</span>
                    <span>{selectedItem.meta?.stackable ? "64" : "1"}</span>
                  </div>
                </div>
              </div>
            </div>
          </div>
        ) : (
          <div className="inspector-placeholder">
            <div className="scanner-line"></div>
            <p>AWAITING_OBJECT_SELECTION...</p>
          </div>
        )}
      </div>
    </div>
  );
};

export default ItemListTab;