import { Image as KonvaImage, Transformer, Rect, Text } from "react-konva";
import { useRef, useEffect, useState } from "react";
import useEditorStore from "../useEditorStore";

export default function ImageElement({ element }) {
    const updateElement = useEditorStore((state) => state.updateElement);
    const setSelectedId = useEditorStore((state) => state.setSelectedId);
    const selectedId = useEditorStore((state) => state.selectedId);

    const shapeRef = useRef();
    const trRef = useRef();
    const [image, setImage] = useState(null);
    const [isHovered, setIsHovered] = useState(false);

    const isSelected = selectedId === element.id;

    useEffect(() => {
        if (element.src) {
            const img = new window.Image();
            img.src = element.src;
            img.onload = () => {
                setImage(img);
            };
        } else {
            setImage(null);
        }
    }, [element.src]);

    useEffect(() => {
        if (isSelected && trRef.current && shapeRef.current) {
            trRef.current.nodes([shapeRef.current]);
            trRef.current.getLayer().batchDraw();
        }
    }, [isSelected]);

    const handleImageUpload = () => {
        const input = document.createElement("input");
        input.type = "file";
        input.accept = "image/*";
        input.onchange = (e) => {
            const file = e.target.files[0];
            if (file) {
                const reader = new FileReader();
                reader.onload = (event) => {
                    updateElement(element.id, { src: event.target.result });
                };
                reader.readAsDataURL(file);
            }
        };
        input.click();
    };

    const handleDeleteImage = (e) => {
        e.cancelBubble = true;
        updateElement(element.id, { src: null });
    };

    if (!image) {
        // Placeholder when no image
        return (
            <>
                <Rect
                    ref={shapeRef}
                    x={element.x}
                    y={element.y}
                    width={element.width}
                    height={element.height}
                    fill="#f0f0f0"
                    stroke="#ddd"
                    strokeWidth={2}
                    dash={[5, 5]}
                    rotation={element.rotation}
                    draggable
                    onClick={() => {
                        setSelectedId(element.id);
                        handleImageUpload();
                    }}
                    onDragEnd={(e) => {
                        const snap = (v) => Math.round(v / 10) * 10;
                        updateElement(element.id, {
                            x: snap(e.target.x()),
                            y: snap(e.target.y()),
                        });
                    }}
                />
                <Text
                    text="📷 Click to Upload"
                    x={element.x + element.width / 2 - 60}
                    y={element.y + element.height / 2 - 10}
                    fontSize={14}
                    fill="#999"
                    listening={false}
                />
                {isSelected && (
                    <Transformer
                        ref={trRef}
                        rotateEnabled={true}
                        boundBoxFunc={(oldBox, newBox) => {
                            if (newBox.width < 20 || newBox.height < 20) {
                                return oldBox;
                            }
                            return newBox;
                        }}
                    />
                )}
            </>
        );
    }

    return (
        <>
            <KonvaImage
                ref={shapeRef}
                image={image}
                x={element.x}
                y={element.y}
                width={element.width}
                height={element.height}
                rotation={element.rotation}
                draggable
                onClick={() => setSelectedId(element.id)}
                onMouseEnter={() => setIsHovered(true)}
                onMouseLeave={() => setIsHovered(false)}
                onDragEnd={(e) => {
                    const snap = (v) => Math.round(v / 10) * 10;
                    updateElement(element.id, {
                        x: snap(e.target.x()),
                        y: snap(e.target.y()),
                    });
                }}
                onTransformEnd={() => {
                    const node = shapeRef.current;
                    const scaleX = node.scaleX();
                    const scaleY = node.scaleY();

                    node.scaleX(1);
                    node.scaleY(1);

                    updateElement(element.id, {
                        x: node.x(),
                        y: node.y(),
                        width: Math.max(5, node.width() * scaleX),
                        height: Math.max(5, node.height() * scaleY),
                        rotation: node.rotation(),
                    });
                }}
            />

            {/* Delete button on hover */}
            {isHovered && (
                <Rect
                    x={element.x + element.width - 30}
                    y={element.y + 5}
                    width={25}
                    height={25}
                    fill="#ff4444"
                    cornerRadius={4}
                    onClick={handleDeleteImage}
                    onTap={handleDeleteImage}
                />
            )}
            {isHovered && (
                <Text
                    text="×"
                    x={element.x + element.width - 22}
                    y={element.y + 8}
                    fontSize={18}
                    fill="#fff"
                    fontStyle="bold"
                    onClick={handleDeleteImage}
                    onTap={handleDeleteImage}
                />
            )}

            {isSelected && (
                <Transformer
                    ref={trRef}
                    rotateEnabled={true}
                    boundBoxFunc={(oldBox, newBox) => {
                        // Limit resize
                        if (newBox.width < 20 || newBox.height < 20) {
                            return oldBox;
                        }
                        return newBox;
                    }}
                />
            )}
        </>
    );
}