/**
 * Shopping Cart Component
 * Handles cart dropdown, updates, and interactions
 */

(function () {
  "use strict";

  class ShoppingCart {
    constructor() {
      this.cartToggle = document.getElementById("cartToggle");
      this.cartPanel = document.getElementById("cartPanel");
      this.cartContent = document.getElementById("cartContent");
      this.cartClose = document.getElementById("cartClose");
      this.isOpen = false;

      this.init();
    }

    init() {
      this.setupEventListeners();
      this.render();
    }

    setupEventListeners() {
      if (this.cartToggle) {
        this.cartToggle.addEventListener("click", () => this.toggle());
      }

      if (this.cartClose) {
        this.cartClose.addEventListener("click", () => this.close());
      }

      // Close when clicking outside
      document.addEventListener("click", (e) => {
        if (this.isOpen && !e.target.closest(".cart-dropdown-wrapper")) {
          this.close();
        }
      });

      // Listen for cart updates
      window.addEventListener("cart-updated", () => this.render());
    }

    toggle() {
      this.isOpen ? this.close() : this.open();
    }

    open() {
      if (this.cartPanel) {
        this.cartPanel.classList.add("active");
        this.cartPanel.setAttribute("aria-hidden", "false");
        this.isOpen = true;
        this.render();
      }
    }

    close() {
      if (this.cartPanel) {
        this.cartPanel.classList.remove("active");
        this.cartPanel.setAttribute("aria-hidden", "true");
        this.isOpen = false;
      }
    }

    render() {
      if (!this.cartContent) return;

      const cart = window.AppState.cart;

      if (cart.length === 0) {
        this.cartContent.innerHTML =
          '<p class="empty-state">Your cart is empty</p>';
        this.updateFooter(null);
        return;
      }

      const html = cart.map((item) => this.renderCartItem(item)).join("");
      this.cartContent.innerHTML = html;

      // Add event listeners to cart items
      this.setupCartItemListeners();

      // Update footer with total
      this.updateFooter(window.AppState.getCartTotal());
    }

    renderCartItem(item) {
      const imageUrl =
        item.imageUrl || item.image_url || "/assets/images/placeholder.jpg";
      const title = window.Utils.escapeHtml(
        item.title || item.name || "Product"
      );
      const price = window.Utils.formatCurrency(item.price || 0);
      const subtotal = window.Utils.formatCurrency(
        (item.price || 0) * item.quantity
      );

      return `
        <div class="cart-item" data-id="${item.id}">
          <img src="${imageUrl}" alt="${title}" class="cart-item-image" loading="lazy">
          <div class="cart-item-details">
            <h4 class="cart-item-title">${title}</h4>
            <p class="cart-item-price">${price}</p>
            <div class="cart-item-quantity">
              <button class="quantity-btn quantity-minus" data-id="${item.id}" aria-label="Decrease quantity">
                <i class="bi bi-dash"></i>
              </button>
              <span class="quantity-value">${item.quantity}</span>
              <button class="quantity-btn quantity-plus" data-id="${item.id}" aria-label="Increase quantity">
                <i class="bi bi-plus"></i>
              </button>
            </div>
            <p class="cart-item-subtotal">${subtotal}</p>
          </div>
          <button class="cart-item-remove" data-id="${item.id}" aria-label="Remove from cart">
            <i class="bi bi-x-lg"></i>
          </button>
        </div>
      `;
    }

    setupCartItemListeners() {
      // Remove buttons
      this.cartContent.querySelectorAll(".cart-item-remove").forEach((btn) => {
        btn.addEventListener("click", (e) => {
          const id = parseInt(e.currentTarget.dataset.id);
          window.AppState.removeFromCart(id);
          this.render();
        });
      });

      // Quantity buttons
      this.cartContent.querySelectorAll(".quantity-minus").forEach((btn) => {
        btn.addEventListener("click", (e) => {
          const id = parseInt(e.currentTarget.dataset.id);
          const item = window.AppState.cart.find((item) => item.id === id);
          if (item && item.quantity > 1) {
            window.AppState.updateCartQuantity(id, item.quantity - 1);
            this.render();
          }
        });
      });

      this.cartContent.querySelectorAll(".quantity-plus").forEach((btn) => {
        btn.addEventListener("click", (e) => {
          const id = parseInt(e.currentTarget.dataset.id);
          const item = window.AppState.cart.find((item) => item.id === id);
          if (item) {
            window.AppState.updateCartQuantity(id, item.quantity + 1);
            this.render();
          }
        });
      });
    }

    updateFooter(total) {
      const footer = this.cartPanel?.querySelector(".dropdown-foot");
      if (!footer) return;

      if (total === null) {
        footer.innerHTML =
          '<a href="/shop" class="btn-outline">Continue Shopping</a>';
      } else {
        footer.innerHTML = `
          <div class="cart-total">
            <span>Total:</span>
            <strong>${window.Utils.formatCurrency(total)}</strong>
          </div>
          <a href="/shop" class="btn-text">Continue Shopping</a>
          <button class="btn-primary-full" onclick="alert('Checkout coming soon!')">
            Proceed to Checkout
          </button>
        `;
      }
    }
  }

  // Wishlist Component
  class Wishlist {
    constructor() {
      this.wishlistToggle = document.getElementById("wishlistToggle");
      this.wishlistPanel = document.getElementById("wishlistPanel");
      this.wishlistContent = document.getElementById("wishlistContent");
      this.wishlistClose = document.getElementById("wishlistClose");
      this.isOpen = false;

      this.init();
    }

    init() {
      this.setupEventListeners();
      this.render();
    }

    setupEventListeners() {
      if (this.wishlistToggle) {
        this.wishlistToggle.addEventListener("click", () => this.toggle());
      }

      if (this.wishlistClose) {
        this.wishlistClose.addEventListener("click", () => this.close());
      }

      // Close when clicking outside
      document.addEventListener("click", (e) => {
        if (this.isOpen && !e.target.closest(".wishlist-dropdown-wrapper")) {
          this.close();
        }
      });

      // Listen for wishlist updates
      window.addEventListener("wishlist-updated", () => this.render());
    }

    toggle() {
      this.isOpen ? this.close() : this.open();
    }

    open() {
      if (this.wishlistPanel) {
        this.wishlistPanel.classList.add("active");
        this.wishlistPanel.setAttribute("aria-hidden", "false");
        this.isOpen = true;
        this.render();
      }
    }

    close() {
      if (this.wishlistPanel) {
        this.wishlistPanel.classList.remove("active");
        this.wishlistPanel.setAttribute("aria-hidden", "true");
        this.isOpen = false;
      }
    }

    render() {
      if (!this.wishlistContent) return;

      const wishlist = window.AppState.wishlist;

      if (wishlist.length === 0) {
        this.wishlistContent.innerHTML =
          '<p class="empty-state">Your wishlist is empty</p>';
        return;
      }

      const html = wishlist
        .map((item) => this.renderWishlistItem(item))
        .join("");
      this.wishlistContent.innerHTML = html;

      // Add event listeners
      this.setupWishlistItemListeners();
    }

    renderWishlistItem(item) {
      const imageUrl =
        item.imageUrl || item.image_url || "/assets/images/placeholder.jpg";
      const title = window.Utils.escapeHtml(
        item.title || item.name || "Product"
      );
      const price = window.Utils.formatCurrency(item.price || 0);

      return `
        <div class="wishlist-item" data-id="${item.id}">
          <img src="${imageUrl}" alt="${title}" class="wishlist-item-image" loading="lazy">
          <div class="wishlist-item-details">
            <h4 class="wishlist-item-title">${title}</h4>
            <p class="wishlist-item-price">${price}</p>
            <button class="btn-add-to-cart" data-id="${item.id}">Add to Cart</button>
          </div>
          <button class="wishlist-item-remove" data-id="${item.id}" aria-label="Remove from wishlist">
            <i class="bi bi-x-lg"></i>
          </button>
        </div>
      `;
    }

    setupWishlistItemListeners() {
      // Remove buttons
      this.wishlistContent
        .querySelectorAll(".wishlist-item-remove")
        .forEach((btn) => {
          btn.addEventListener("click", (e) => {
            const id = parseInt(e.currentTarget.dataset.id);
            window.AppState.removeFromWishlist(id);
            this.render();
          });
        });

      // Add to cart buttons
      this.wishlistContent
        .querySelectorAll(".btn-add-to-cart")
        .forEach((btn) => {
          btn.addEventListener("click", (e) => {
            const id = parseInt(e.currentTarget.dataset.id);
            const item = window.AppState.wishlist.find(
              (item) => item.id === id
            );
            if (item) {
              window.AppState.addToCart(item);
            }
          });
        });
    }
  }

  // Initialize when DOM is ready
  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", () => {
      new ShoppingCart();
      new Wishlist();
    });
  } else {
    new ShoppingCart();
    new Wishlist();
  }
})();