import React, { useState, useEffect } from "react";
import { useNavigate } from "react-router-dom";
import { Rental } from "../types";
import { itemAPI } from "../services/api";
import Avatar from "./Avatar";

interface ItemReviewsProps {
  itemId: string;
}

const ItemReviews: React.FC<ItemReviewsProps> = ({ itemId }) => {
  const navigate = useNavigate();
  const [reviews, setReviews] = useState<Rental[]>([]);
  const [loading, setLoading] = useState(true);
  const [averageRating, setAverageRating] = useState(0);

  useEffect(() => {
    fetchReviews();
  }, [itemId]);

  const fetchReviews = async () => {
    try {
      const response = await itemAPI.getItemReviews(itemId);
      const { reviews, averageRating } = response.data;
      
      setReviews(reviews);
      setAverageRating(averageRating);
    } catch (error) {
      console.error("Failed to fetch reviews:", error);
    } finally {
      setLoading(false);
    }
  };

  const renderStars = (rating: number) => {
    return (
      <span className="text-warning">
        {[1, 2, 3, 4, 5].map((star) => (
          <i
            key={star}
            className={`bi ${star <= rating ? "bi-star-fill" : "bi-star"}`}
          ></i>
        ))}
      </span>
    );
  };

  if (loading) {
    return (
      <div className="mb-4">
        <h5>Reviews</h5>
        <div className="text-center py-3">
          <div className="spinner-border spinner-border-sm" role="status">
            <span className="visually-hidden">Loading reviews...</span>
          </div>
        </div>
      </div>
    );
  }

  return (
    <div className="mb-4">
      <h5>Reviews</h5>

      {reviews.length === 0 ? (
        <p className="text-muted">Be the first to rent and review this item!</p>
      ) : (
        <>
          <div className="mb-3">
            <div className="d-flex align-items-center gap-2">
              {renderStars(Math.round(averageRating))}
              <span className="fw-bold">{averageRating.toFixed(1)}</span>
              <span className="text-muted">
                ({reviews.length} {reviews.length === 1 ? "review" : "reviews"})
              </span>
            </div>
          </div>

          <div className="border-top pt-3">
            {reviews.map((rental) => (
              <div key={rental.id} className="mb-3 pb-3 border-bottom">
                <div className="d-flex justify-content-between align-items-start mb-2">
                  <div>
                    <div
                      className="d-flex align-items-center gap-2"
                      onClick={() => rental.renter && navigate(`/users/${rental.renterId}`)}
                      style={{ cursor: "pointer" }}
                    >
                      <Avatar user={rental.renter || null} size="sm" />
                      <div>
                        <strong style={{ color: "#0d6efd" }}>
                          {rental.renter?.firstName} {rental.renter?.lastName}
                        </strong>
                        <div className="small">
                          {renderStars(rental.rating || 0)}
                        </div>
                      </div>
                    </div>
                  </div>
                  <small className="text-muted">
                    {new Date(rental.updatedAt).toLocaleDateString()}
                  </small>
                </div>
                <p className="mb-0">{rental.review}</p>
              </div>
            ))}
          </div>
        </>
      )}
    </div>
  );
};

export default ItemReviews;
