'use client';

import { X, ZoomIn, ZoomOut, Download, Film, Image as ImageIcon } from 'lucide-react';
import { useState, useRef, useEffect } from 'react';

interface AssetPreviewModalProps {
    isOpen: boolean;
    onClose: () => void;
    assetUrl: string;
    assetType: 'image' | 'video';
    assetName?: string;
}

export default function AssetPreviewModal({
    isOpen,
    onClose,
    assetUrl,
    assetType,
    assetName = 'Preview'
}: AssetPreviewModalProps) {
    const [scale, setScale] = useState(1);
    const [isDragging, setIsDragging] = useState(false);
    const [position, setPosition] = useState({ x: 0, y: 0 });
    const [dragStart, setDragStart] = useState({ x: 0, y: 0 });
    const containerRef = useRef<HTMLDivElement>(null);

    // Reset state when modal opens/closes or asset changes
    useEffect(() => {
        if (isOpen) {
            setScale(1);
            setPosition({ x: 0, y: 0 });
        }
    }, [isOpen, assetUrl]);

    if (!isOpen) return null;

    const handleZoomIn = () => setScale(s => Math.min(s + 0.5, 4));
    const handleZoomOut = () => setScale(s => Math.max(s - 0.5, 1));

    const handleWheel = (e: React.WheelEvent) => {
        if (e.ctrlKey || e.metaKey) {
            e.preventDefault();
            const delta = e.deltaY > 0 ? -0.1 : 0.1;
            setScale(s => Math.min(Math.max(s + delta, 0.5), 5));
        }
    };

    const handleMouseDown = (e: React.MouseEvent) => {
        if (scale > 1) {
            setIsDragging(true);
            setDragStart({ x: e.clientX - position.x, y: e.clientY - position.y });
        }
    };

    const handleMouseMove = (e: React.MouseEvent) => {
        if (isDragging && scale > 1) {
            setPosition({
                x: e.clientX - dragStart.x,
                y: e.clientY - dragStart.y
            });
        }
    };

    const handleMouseUp = () => setIsDragging(false);

    return (
        <div
            className="fixed inset-0 z-50 flex items-center justify-center bg-black/95 backdrop-blur-md"
            onClick={(e) => {
                // Close if clicking the background
                if (e.target === e.currentTarget) onClose();
            }}
        >
            {/* Toolbar */}
            <div className="absolute top-0 left-0 right-0 p-4 flex justify-between items-center z-50 bg-gradient-to-b from-black/80 to-transparent pointer-events-none">
                <div className="pointer-events-auto flex items-center gap-3">
                    <div className="bg-white/10 backdrop-blur-md px-4 py-2 rounded-full border border-white/20 text-white font-medium text-sm flex items-center gap-2">
                        {assetType === 'video' ? <Film className="w-4 h-4 text-forge-yellow" /> : <ImageIcon className="w-4 h-4 text-forge-yellow" />}
                        {assetName}
                    </div>
                </div>

                <div className="pointer-events-auto flex items-center gap-2">
                    {/* Zoom Controls (only for images) */}
                    {assetType === 'image' && (
                        <div className="bg-white/10 backdrop-blur-md rounded-full border border-white/20 flex overflow-hidden mr-2">
                            <button
                                onClick={handleZoomOut}
                                className="p-2 hover:bg-white/10 text-white transition-colors border-r border-white/10"
                                disabled={scale <= 1}
                            >
                                <ZoomOut className="w-5 h-5" />
                            </button>
                            <div className="px-3 py-2 text-xs font-mono text-white/70 min-w-[3rem] text-center flex items-center justify-center">
                                {(scale * 100).toFixed(0)}%
                            </div>
                            <button
                                onClick={handleZoomIn}
                                className="p-2 hover:bg-white/10 text-white transition-colors border-l border-white/10"
                                disabled={scale >= 4}
                            >
                                <ZoomIn className="w-5 h-5" />
                            </button>
                        </div>
                    )}

                    <a
                        href={assetUrl}
                        download={assetName}
                        className="p-3 rounded-full bg-white/10 border border-white/20 text-white hover:bg-white/20 transition-all hover:scale-105"
                        title="Download Original"
                    >
                        <Download className="w-5 h-5" />
                    </a>

                    <button
                        onClick={onClose}
                        className="p-3 rounded-full bg-white/10 border border-white/20 text-white hover:bg-red-500/20 hover:border-red-500/50 hover:text-red-400 transition-all hover:scale-105 ml-2"
                        title="Close Preview"
                    >
                        <X className="w-5 h-5" />
                    </button>
                </div>
            </div>

            {/* Content Area */}
            <div
                ref={containerRef}
                className="w-full h-full flex items-center justify-center overflow-hidden p-6"
                onWheel={handleWheel}
            >
                {assetType === 'video' ? (
                    <video
                        src={assetUrl}
                        controls
                        autoPlay
                        className="max-w-full max-h-full rounded-lg shadow-2xl"
                        style={{
                            boxShadow: '0 0 50px rgba(0,0,0,0.5)'
                        }}
                    />
                ) : (
                    <div
                        className={`relative transition-transform duration-100 ease-out ${isDragging ? 'cursor-grabbing' : scale > 1 ? 'cursor-grab' : ''}`}
                        style={{
                            transform: `scale(${scale}) translate(${position.x / scale}px, ${position.y / scale}px)`,
                        }}
                        onMouseDown={handleMouseDown}
                        onMouseMove={handleMouseMove}
                        onMouseUp={handleMouseUp}
                        onMouseLeave={handleMouseUp}
                    >
                        <img
                            src={assetUrl}
                            alt={assetName}
                            className="max-w-full max-h-[90vh] object-contain rounded-lg shadow-2xl"
                            draggable={false}
                            style={{
                                boxShadow: '0 0 50px rgba(0,0,0,0.5)'
                            }}
                        />
                    </div>
                )}
            </div>

            {/* Hint overlay */}
            {assetType === 'image' && scale === 1 && (
                <div className="absolute bottom-8 left-1/2 -translate-x-1/2 pointer-events-none opacity-50 text-white/50 text-xs px-4 py-2 rounded-full bg-black/40 backdrop-blur-sm border border-white/10">
                    Scroll to zoom • Drag to pan
                </div>
            )}
        </div>
    );
}