//////////  Three and React Three Fiber Imports  //////////

import * as THREE from "three";
import { useEffect, useRef, useState } from "react";
import { useThree, useFrame } from "@react-three/fiber";

//////////  Component Imports  //////////

import DistanceText from "./geomentries/lines/distanceText/distanceText";
import ReferenceDistanceText from "./geomentries/lines/distanceText/referenceDistanceText";

//////////  Zustand State Imports  //////////

import {
    useToggleView,
    useDeletePointOrLine,
    useActiveLayer,
    useWallVisibility,
    useRoofVisibility,
    useShadows,
    useUpdateScene,
    useWalls,
    useToolMode,
    useRefTextUpdate,
    useRenderDistance,
    useLimitDistance,
} from "../../store/builder/store";

//////////  3D Function Imports  //////////

import loadWalls from "./geomentries/walls/loadWalls";

import * as Types from "../../types/world/worldTypes";

import SocketResponses from "../collaboration/socket/socketResponses.dev";
import FloorItemsGroup from "./groups/floorItemsGroup";
import FloorPlanGroup from "./groups/floorPlanGroup";
import FloorGroup from "./groups/floorGroup";
import FloorGroupAilse from "./groups/floorGroupAisle";
import Draw from "./functions/draw";
import WallsAndWallItems from "./groups/wallsAndWallItems";
import Ground from "../scene/environment/ground";
import { findEnvironment } from "../../services/factoryBuilder/environment/findEnvironment";
import Layer2DVisibility from "./geomentries/layers/layer2DVisibility";
import ZoneGroup from "./groups/zoneGroup";
import MeasurementTool from "../scene/tools/measurementTool";
import NavMesh from "../simulation/vehicle/navMesh/navMesh";
import CalculateAreaGroup from "./groups/calculateAreaGroup";
import LayoutImage from "./layout/layoutImage";
import AssetsGroup from "./assetGroup/assetsGroup";
import { Bvh } from "@react-three/drei";
import DxfFile from "./dfx/LoadBlueprint";
import { useParams } from "react-router-dom";

export default function Builder() {
    const state = useThree<Types.ThreeState>(); // Importing the state from the useThree hook, which contains the scene, camera, and other Three.js elements.
    const csg = useRef(); // Reference for CSG object, used for 3D modeling.
    const CSGGroup = useRef() as Types.RefMesh; // Reference to a group of CSG objects.
    const scene = useRef() as Types.RefScene; // Reference to the scene.
    const camera = useRef() as Types.RefCamera; // Reference to the camera object.
    const controls = useRef<any>(); // Reference to the controls object.
    const raycaster = useRef() as Types.RefRaycaster; // Reference for raycaster used for detecting objects being pointed at in the scene.
    const dragPointControls = useRef() as Types.RefDragControl; // Reference for drag point controls, an array for drag control.

    // Assigning the scene and camera from the Three.js state to the references.

    scene.current = state.scene;
    camera.current = state.camera;
    controls.current = state.controls;
    raycaster.current = state.raycaster;

    const plane = useRef<THREE.Mesh>(null); // Reference for a plane object for raycaster reference.
    const grid = useRef() as any; // Reference for a grid object for raycaster reference.
    const snappedPoint = useRef() as Types.RefVector3; // Reference for storing a snapped point at the (end = isSnapped) and (start = ispreSnapped) of the line.
    const isSnapped = useRef(false) as Types.RefBoolean; // Boolean reference to indicate if an object is snapped at the (end).
    const anglesnappedPoint = useRef() as Types.RefVector3; // Reference for storing an angle-snapped point when the line is in 90 degree etc...
    const isAngleSnapped = useRef(false) as Types.RefBoolean; // Boolean to indicate if angle snapping is active.
    const isSnappedUUID = useRef() as Types.RefString; // UUID reference to identify the snapped point.
    const ispreSnapped = useRef(false) as Types.RefBoolean; // Boolean reference to indicate if an object is snapped at the (start).
    const tempLoader = useRef() as Types.RefMesh; // Reference for a temporary loader for the floor items.
    const isTempLoader = useRef() as Types.RefBoolean; // Reference to check if a temporary loader is active.
    const Tube = useRef() as Types.RefTubeGeometry; // Reference for tubes used for reference line creation and updation.
    const line = useRef([]) as Types.RefLine; // Reference for line which stores the current line that is being drawn.
    const lines = useRef([]) as Types.RefLines; // Reference for lines which stores all the lines that are ever drawn.
    const onlyFloorline = useRef<Types.OnlyFloorLine>([]); // Reference for floor lines which does not have walls or roof and have only floor used to store the current line that is being drawn.
    const onlyFloorlines = useRef<Types.OnlyFloorLines>([]); // Reference for all the floor lines that are ever drawn.
    const ReferenceLineMesh = useRef() as Types.RefMesh; // Reference for storing the mesh of the reference line for moving it during draw.
    const LineCreated = useRef(false) as Types.RefBoolean; // Boolean to track whether the reference line is created or not.
    const referencePole = useRef() as Types.RefMesh; // Reference for a pole that is used as the reference for the user to show where it is placed.
    const itemsGroup = useRef() as Types.RefGroup; // Reference to the THREE.Group that has the floor items (Gltf).
    const floorGroup = useRef() as Types.RefGroup; // Reference to the THREE.Group that has the roofs and the floors.
    const AttachedObject = useRef() as Types.RefMesh; // Reference for an object that is attached using dbl click for transform controls rotation.
    const floorPlanGroup = useRef() as Types.RefGroup; // Reference for a THREE.Group that has the lines group and the points group.
    const floorPlanGroupLine = useRef() as Types.RefGroup; // Reference for a THREE.Group that has the lines that are drawn.
    const floorPlanGroupPoint = useRef() as Types.RefGroup; // Reference for a THREE.Group that has the points that are created.
    const floorGroupAisle = useRef() as Types.RefGroup;
    const zoneGroup = useRef() as Types.RefGroup;
    const currentLayerPoint = useRef([]) as Types.RefMeshArray; // Reference for points that re in the current layer used to update the points in drag controls.
    const hoveredDeletablePoint = useRef() as Types.RefMesh; // Reference for the currently hovered point that can be deleted.
    const hoveredDeletableLine = useRef() as Types.RefMesh; // Reference for the currently hovered line that can be deleted.
    const hoveredDeletableFloorItem = useRef() as Types.RefMesh; // Reference for the currently hovered floor item that can be deleted.
    const hoveredDeletableWallItem = useRef() as Types.RefMesh; // Reference for the currently hovered wall item that can be deleted.
    const hoveredDeletablePillar = useRef() as Types.RefMesh; // Reference for the currently hovered pillar that can be deleted.
    const currentWallItem = useRef() as Types.RefMesh; // Reference for the currently selected wall item that can be scaled, dragged etc...

    const cursorPosition = new THREE.Vector3(); // 3D vector for storing the cursor position.

    const [selectedItemsIndex, setSelectedItemsIndex] = useState<Types.Number | null>(null); // State for tracking the index of the selected item.
    const { activeLayer } = useActiveLayer(); // State that changes based on which layer the user chooses in Layers.jsx.
    const { toggleView } = useToggleView(); // State for toggling between 2D and 3D.
    const { toolMode, setToolMode } = useToolMode();
    const { setDeletePointOrLine } = useDeletePointOrLine();
    const { setRoofVisibility } = useRoofVisibility();
    const { setWallVisibility } = useWallVisibility();
    const { setShadows } = useShadows();
    const { setRenderDistance } = useRenderDistance();
    const { setLimitDistance } = useLimitDistance();
    const { setUpdateScene } = useUpdateScene();
    const { setWalls } = useWalls();
    const { refTextupdate, setRefTextUpdate } = useRefTextUpdate();
    const { projectId } = useParams();

    // const loader = new GLTFLoader();
    // const dracoLoader = new DRACOLoader();

    // dracoLoader.setDecoderPath('https://cdn.jsdelivr.net/npm/three@0.160.0/examples/jsm/libs/draco/gltf/');
    // loader.setDRACOLoader(dracoLoader);

    //////////  All Toggle's //////////

    useEffect(() => {
        setRefTextUpdate((prevUpdate: number) => prevUpdate - 1);
        if (toggleView) {
            Layer2DVisibility(
                activeLayer,
                floorPlanGroup,
                floorPlanGroupLine,
                floorPlanGroupPoint,
                currentLayerPoint,
                dragPointControls
            );
        } else {
            setToolMode(null);
            setDeletePointOrLine(false);
            loadWalls(lines, setWalls);
            setUpdateScene(true);
            line.current = [];
        }
    }, [toggleView]);

    useEffect(() => {
        THREE.Cache.clear();
        THREE.Cache.enabled = true;
    }, []);

    useEffect(() => {
        const email = localStorage.getItem("email");
        const organization = email!.split("@")[1].split(".")[0];

        async function fetchVisibility() {
            const visibility = await findEnvironment(
                organization,
                localStorage.getItem("userId")!,projectId
            );
            if (visibility) {
                setRoofVisibility(visibility.roofVisibility);
                setWallVisibility(visibility.wallVisibility);
                setShadows(visibility.shadowVisibility);
                setRenderDistance(visibility.renderDistance);
                setLimitDistance(visibility.limitDistance);
            }
        }
        fetchVisibility();
    }, []);

    //////////  UseFrame is Here  //////////

    useFrame(() => {
        if (toolMode) {
            Draw(
                state,
                plane,
                cursorPosition,
                floorPlanGroupPoint,
                floorPlanGroupLine,
                snappedPoint,
                isSnapped,
                isSnappedUUID,
                line,
                lines,
                ispreSnapped,
                floorPlanGroup,
                ReferenceLineMesh,
                LineCreated,
                setRefTextUpdate,
                Tube,
                anglesnappedPoint,
                isAngleSnapped,
                toolMode
            );
        }
    });

    //////////  Return  //////////

    return (
        <>
            <Ground grid={grid} plane={plane} />

            <Bvh firstHitOnly>
                <DistanceText key={toggleView} />
            </Bvh>

            <ReferenceDistanceText
                key={refTextupdate}
                line={ReferenceLineMesh.current}
            />

            <Bvh firstHitOnly>
                <SocketResponses
                    floorPlanGroup={floorPlanGroup}
                    lines={lines}
                    floorGroup={floorGroup}
                    floorGroupAisle={floorGroupAisle}
                    scene={scene}
                    onlyFloorlines={onlyFloorlines}
                    itemsGroup={itemsGroup}
                    isTempLoader={isTempLoader}
                    tempLoader={tempLoader}
                    currentLayerPoint={currentLayerPoint}
                    floorPlanGroupPoint={floorPlanGroupPoint}
                    floorPlanGroupLine={floorPlanGroupLine}
                    zoneGroup={zoneGroup}
                    dragPointControls={dragPointControls}
                />
            </Bvh>

            <WallsAndWallItems
                CSGGroup={CSGGroup}
                setSelectedItemsIndex={setSelectedItemsIndex}
                selectedItemsIndex={selectedItemsIndex}
                currentWallItem={currentWallItem}
                csg={csg}
                lines={lines}
                hoveredDeletableWallItem={hoveredDeletableWallItem}
            />

            <Bvh firstHitOnly>
                <FloorItemsGroup
                    itemsGroup={itemsGroup}
                    hoveredDeletableFloorItem={hoveredDeletableFloorItem}
                    AttachedObject={AttachedObject}
                    floorGroup={floorGroup}
                    tempLoader={tempLoader}
                    isTempLoader={isTempLoader}
                    plane={plane}
                />

                <FloorGroup
                    floorGroup={floorGroup}
                    lines={lines}
                    referencePole={referencePole}
                    hoveredDeletablePillar={hoveredDeletablePillar}
                />

                <FloorPlanGroup
                    floorPlanGroup={floorPlanGroup}
                    floorPlanGroupLine={floorPlanGroupLine}
                    floorPlanGroupPoint={floorPlanGroupPoint}
                    floorGroup={floorGroup}
                    currentLayerPoint={currentLayerPoint}
                    dragPointControls={dragPointControls}
                    hoveredDeletablePoint={hoveredDeletablePoint}
                    hoveredDeletableLine={hoveredDeletableLine}
                    plane={plane}
                    line={line}
                    lines={lines}
                    onlyFloorline={onlyFloorline}
                    onlyFloorlines={onlyFloorlines}
                    ReferenceLineMesh={ReferenceLineMesh}
                    LineCreated={LineCreated}
                    isSnapped={isSnapped}
                    ispreSnapped={ispreSnapped}
                    snappedPoint={snappedPoint}
                    isSnappedUUID={isSnappedUUID}
                    isAngleSnapped={isAngleSnapped}
                    anglesnappedPoint={anglesnappedPoint}
                />

                <ZoneGroup />

                <FloorGroupAilse
                    floorGroupAisle={floorGroupAisle}
                    plane={plane}
                    floorPlanGroupLine={floorPlanGroupLine}
                    floorPlanGroupPoint={floorPlanGroupPoint}
                    line={line}
                    lines={lines}
                    currentLayerPoint={currentLayerPoint}
                    dragPointControls={dragPointControls}
                    floorPlanGroup={floorPlanGroup}
                    ReferenceLineMesh={ReferenceLineMesh}
                    LineCreated={LineCreated}
                    isSnapped={isSnapped}
                    ispreSnapped={ispreSnapped}
                    snappedPoint={snappedPoint}
                    isSnappedUUID={isSnappedUUID}
                    isAngleSnapped={isAngleSnapped}
                    anglesnappedPoint={anglesnappedPoint}
                />

                {/* <AssetsGroup /> */}

                <MeasurementTool />

                <CalculateAreaGroup />
                <NavMesh lines={lines} />

                <DxfFile
                    lines={lines}
                    dragPointControls={dragPointControls}
                    currentLayerPoint={currentLayerPoint}
                    floorPlanGroupLine={floorPlanGroupLine}
                    floorPlanGroupPoint={floorPlanGroupPoint}
                />

                <LayoutImage />
            </Bvh>
        </>
    );
}