"use client";

import {
  JustifiedImage,
  justifyPortfolioImages,
} from "@/utils/justifyPortfolioImages";
import { useEffect, useRef, useState } from "react";
import { ImageCard } from "./ImageCard";

interface Props {
  images: JustifiedImage[];
  rowHeight?: number;
  gap?: number;
}

export function JustifiedGallery({ images, rowHeight = 200, gap = 4 }: Props) {
  const containerRef = useRef<HTMLDivElement>(null);
  const [containerWidth, setContainerWidth] = useState(1200);
  const [rows, setRows] = useState<JustifiedImage[][]>([]);

  useEffect(() => {
    if (!containerRef.current) return;
    const observer = new ResizeObserver(([entry]) => {
      setContainerWidth(entry.contentRect.width);
    });
    observer.observe(containerRef.current);
    return () => observer.disconnect();
  }, []);

  useEffect(() => {
    const newRows = justifyPortfolioImages(images, containerWidth, rowHeight, gap);
    setRows(newRows);
  }, [images, containerWidth, rowHeight, gap]);

  return (
    <div ref={containerRef} className="w-full">
      {rows.length === 0 && (
        <p className="text-muted-foreground text-center py-20">No images to display</p>
      )}
      {rows.map((row, i) => (
        <div key={i} className="flex gap-[4px] mb-[4px]">
          {row.map((img) => (
            <div key={img.id} style={{ width: img.width, height: img.height }}>
              <ImageCard
                image={{
                  id: img.id,
                  altText: img.altText,
                  url: img.url,
                  backgroundColor: img.backgroundColor,
                }}
                variant="mosaic"
              />
            </div>
          ))}
        </div>
      ))}
    </div>
  );
}
