import { useState, useEffect } from "react";
import { getGroceryLists, updateGroceryList } from "../groceryApi";

function PinnedGroceryLists({ onShowToast }) {
  const [pinnedLists, setPinnedLists] = useState([]);

  useEffect(() => {
    loadPinnedLists();
  }, []);

  const loadPinnedLists = async () => {
    try {
      const allLists = await getGroceryLists();
      const pinned = allLists.filter((list) => list.is_pinned);
      setPinnedLists(pinned);
    } catch (error) {
      console.error("Failed to load pinned lists", error);
    }
  };

  const handleToggleItem = async (listId, itemIndex) => {
    const list = pinnedLists.find((l) => l.id === listId);
    if (!list || !list.can_edit) return;

    const updatedItems = [...list.items];
    const item = updatedItems[itemIndex];

    if (item.startsWith("✓ ")) {
      updatedItems[itemIndex] = item.substring(2);
    } else {
      updatedItems[itemIndex] = "✓ " + item;
    }

    try {
      await updateGroceryList(listId, { items: updatedItems });
      setPinnedLists(
        pinnedLists.map((l) =>
          l.id === listId ? { ...l, items: updatedItems } : l
        )
      );
    } catch (error) {
      onShowToast?.(error.message, "error");
    }
  };

  if (pinnedLists.length === 0) {
    return null;
  }

  return (
    <div className="pinned-grocery-lists">
      {pinnedLists.map((list) => (
        <div key={list.id} className="pinned-note">
          <div className="pin-icon">📌</div>
          <h3 className="note-title">{list.name}</h3>
          <ul className="note-items">
            {list.items.length === 0 ? (
              <li className="empty-note">הרשימה ריקה</li>
            ) : (
              list.items.map((item, index) => {
                const isChecked = item.startsWith("✓ ");
                const itemText = isChecked ? item.substring(2) : item;
                return (
                  <li
                    key={index}
                    className={`note-item ${isChecked ? "checked" : ""}`}
                    onClick={() =>
                      list.can_edit && handleToggleItem(list.id, index)
                    }
                    style={{ cursor: list.can_edit ? "pointer" : "default" }}
                  >
                    <span className="checkbox">{isChecked ? "☑" : "☐"}</span>
                    <span className="item-text">{itemText}</span>
                  </li>
                );
              })
            )}
          </ul>
        </div>
      ))}

      <style>{`
        @import url('https://fonts.googleapis.com/css2?family=Caveat:wght@400;700&display=swap');

        .pinned-grocery-lists {
          display: flex;
          flex-direction: column;
          gap: 1.5rem;
          padding: 1rem;
          max-width: 320px;
        }

        .pinned-note {
          position: relative;
          background: linear-gradient(135deg, #fff9e6 0%, #fffaed 100%);
          padding: 2rem 1.5rem 1.5rem;
          border-radius: 4px;
          box-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.1),
            0 4px 12px rgba(0, 0, 0, 0.08),
            inset 0 1px 0 rgba(255, 255, 255, 0.5);
          border: 1px solid #f5e6c8;
          transform: rotate(-1deg);
          transition: all 0.3s ease;
          font-family: 'Caveat', cursive;
        }

        .pinned-note:nth-child(even) {
          transform: rotate(1deg);
          background: linear-gradient(135deg, #fff5e1 0%, #fff9eb 100%);
        }

        .pinned-note:hover {
          transform: rotate(0deg) scale(1.02);
          box-shadow: 
            0 4px 8px rgba(0, 0, 0, 0.15),
            0 8px 20px rgba(0, 0, 0, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.6);
        }

        .pin-icon {
          position: absolute;
          top: -8px;
          right: 20px;
          font-size: 2rem;
          filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.2));
          transform: rotate(25deg);
        }

        .note-title {
          margin: 0 0 1rem 0;
          font-size: 1.8rem;
          color: #5a4a2a;
          font-weight: 700;
          text-align: center;
          border-bottom: 2px solid rgba(90, 74, 42, 0.2);
          padding-bottom: 0.5rem;
          letter-spacing: 0.5px;
        }

        .note-items {
          list-style: none;
          padding: 0;
          margin: 0;
        }

        .empty-note {
          text-align: center;
          color: #9a8a6a;
          font-size: 1.3rem;
          padding: 1rem;
          font-style: italic;
        }

        .note-item {
          display: flex;
          align-items: flex-start;
          gap: 0.75rem;
          padding: 0.5rem 0;
          font-size: 1.4rem;
          color: #4a3a1a;
          line-height: 1.6;
          transition: all 0.2s;
        }

        .note-item:hover {
          color: #2a1a0a;
        }

        .note-item.checked .item-text {
          text-decoration: line-through;
          opacity: 0.5;
        }

        .checkbox {
          font-size: 1.3rem;
          flex-shrink: 0;
          margin-top: 2px;
        }

        .item-text {
          flex: 1;
          word-break: break-word;
        }

        /* Paper texture overlay */
        .pinned-note::before {
          content: '';
          position: absolute;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background-image: 
            repeating-linear-gradient(
              0deg,
              transparent,
              transparent 31px,
              rgba(90, 74, 42, 0.03) 31px,
              rgba(90, 74, 42, 0.03) 32px
            );
          pointer-events: none;
          border-radius: 4px;
        }

        /* Light mode specific adjustments */
        @media (prefers-color-scheme: light) {
          .pinned-note {
            background: linear-gradient(135deg, #fffbf0 0%, #fffef8 100%);
            border-color: #f0e0c0;
          }

          .pinned-note:nth-child(even) {
            background: linear-gradient(135deg, #fff8e8 0%, #fffcf3 100%);
          }
        }
      `}</style>
    </div>
  );
}

export default PinnedGroceryLists;
