import { useCallback, useEffect, useMemo, useRef } from "react";
import * as THREE from "three";
import { useThree } from "@react-three/fiber";
import { SelectionHelper } from "../helper/selectionHelper";
import { SelectionBox } from "three/examples/jsm/interactive/SelectionBox";

import useModuleStore from "../../../../../store/ui/useModuleStore";
import { useParams } from "react-router-dom";
import { getUserData } from "../../../../../functions/getUserData";
import { useSceneContext } from "../../../sceneContext";
import { useContextActionStore, useSocketStore, useToggleView, useToolMode } from "../../../../../store/builder/store";
import { upsertProductOrEventApi } from "../../../../../services/simulation/products/UpsertProductOrEventApi";
import DuplicationControls3D from "./duplicationControls3D";
import CopyPasteControls3D from "./copyPasteControls3D";
import MoveControls3D from "./moveControls3D";
import RotateControls3D from "./rotateControls3D";
import TransformControls3D from "./transformControls3D";
import { useBuilderStore } from "../../../../../store/builder/useBuilderStore";

import { deleteFloorAssetApi } from "../../../../../services/factoryBuilder/asset/floorAsset/deleteFloorAssetApi";

const SelectionControls3D: React.FC = () => {
    const { camera, controls, gl, scene, raycaster, pointer } = useThree();
    const { toggleView } = useToggleView();
    const { activeModule } = useModuleStore();
    const { toolMode } = useToolMode();
    const boundingBoxRef = useRef<THREE.Mesh>();
    const { socket } = useSocketStore();
    const { contextAction, setContextAction } = useContextActionStore();
    const { assetStore, eventStore, productStore, undoRedo3DStore, versionStore } = useSceneContext();
    const { selectedDecal, selectedWall, selectedAisle, selectedFloor, selectedFloorAsset, selectedWallAsset } = useBuilderStore();
    const { push3D } = undoRedo3DStore();
    const { removeAsset, getAssetById, selectedAssets, setSelectedAssets, movedObjects, rotatedObjects, copiedObjects, pastedObjects, duplicatedObjects, setPastedObjects, setDuplicatedObjects } = assetStore();
    const selectionBox = useMemo(() => new SelectionBox(camera, scene), [camera, scene]);
    const { selectedVersion } = versionStore();
    const { projectId } = useParams();

    const isDragging = useRef(false);
    const isLeftMouseDown = useRef(false);
    const isSelecting = useRef(false);
    const isRightClick = useRef(false);
    const rightClickMoved = useRef(false);
    const isCtrlSelecting = useRef(false);
    const isShiftSelecting = useRef(false);
    const { userId, organization } = getUserData();

    const updateBackend = (productName: string, productUuid: string, projectId: string, eventData: EventsSchema) => {
        upsertProductOrEventApi({
            productName: productName,
            productUuid: productUuid,
            projectId: projectId,
            eventDatas: eventData,
            versionId: selectedVersion?.versionId || "",
        });
    };

    useEffect(() => {
        if (contextAction === "deleteAsset") {
            setContextAction(null);
            deleteSelection();
        }
        // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [contextAction]);

    useEffect(() => {
        if (!camera || !scene || toggleView) return;

        const canvasElement = gl.domElement;
        canvasElement.tabIndex = 0;

        const helper = new SelectionHelper(gl);

        const onPointerDown = (event: PointerEvent) => {
            if (event.button === 2) {
                isRightClick.current = true;
                rightClickMoved.current = false;
            } else if (event.button === 0) {
                isSelecting.current = false;
                isCtrlSelecting.current = event.ctrlKey;
                isShiftSelecting.current = event.shiftKey;
                isLeftMouseDown.current = true;
                isDragging.current = false;
                if (event.ctrlKey && duplicatedObjects.length === 0) {
                    if (controls) (controls as any).enabled = false;
                    selectionBox.startPoint.set(pointer.x, pointer.y, 0);
                }
            }
        };

        const onPointerMove = (event: PointerEvent) => {
            if (isRightClick.current) {
                rightClickMoved.current = true;
            }
            if (isLeftMouseDown.current) {
                isDragging.current = true;
            }
            isSelecting.current = true;
            if (helper.isDown && event.ctrlKey && duplicatedObjects.length === 0 && isCtrlSelecting.current) {
                selectionBox.endPoint.set(pointer.x, pointer.y, 0);
            }
        };

        const onPointerUp = (event: PointerEvent) => {
            if (event.button === 2 && !event.ctrlKey && !event.shiftKey) {
                isRightClick.current = false;
                if (!rightClickMoved.current) {
                    // clearSelection();
                }
                return;
            }

            if (isSelecting.current && isCtrlSelecting.current) {
                isCtrlSelecting.current = false;
                isSelecting.current = false;
                if (event.ctrlKey && duplicatedObjects.length === 0) {
                    selectAssets();
                }
            } else if (!isSelecting.current && selectedAssets.length > 0 && ((!event.ctrlKey && !event.shiftKey && pastedObjects.length === 0 && duplicatedObjects.length === 0 && movedObjects.length === 0 && rotatedObjects.length === 0) || event.button !== 0)) {
                clearSelection();
                helper.enabled = true;
                isCtrlSelecting.current = false;
            } else if (controls) {
                (controls as any).enabled = true;
            }

            if (!isDragging.current && isLeftMouseDown.current && isShiftSelecting.current && event.shiftKey) {
                isShiftSelecting.current = false;
                isLeftMouseDown.current = false;
                isDragging.current = false;

                raycaster.setFromCamera(pointer, camera);
                const intersects = raycaster.intersectObjects(scene.children, true).filter((intersect) => !intersect.object.name.includes("Roof") && !intersect.object.name.includes("MeasurementReference") && !intersect.object.name.includes("agv-collider") && !intersect.object.name.includes("zonePlane") && !intersect.object.name.includes("SelectionGroup") && !intersect.object.name.includes("selectionAssetGroup") && !intersect.object.name.includes("SelectionGroupBoundingBoxLine") && !intersect.object.name.includes("SelectionGroupBoundingBox") && !intersect.object.name.includes("SelectionGroupBoundingLine") && intersect.object.type !== "GridHelper");
                if (intersects.length > 0) {
                    const intersect = intersects[0];
                    const intersectObject = intersect.object;

                    let currentObject: THREE.Object3D | null = intersectObject;
                    while (currentObject) {
                        if (currentObject.userData.modelUuid) {
                            break;
                        }
                        currentObject = currentObject.parent || null;
                    }

                    if (currentObject) {
                        const updatedSelections = new Set(selectedAssets);

                        if (updatedSelections.has(currentObject)) {
                            updatedSelections.delete(currentObject);
                        } else {
                            updatedSelections.add(currentObject);
                        }

                        const selected = Array.from(updatedSelections);

                        setSelectedAssets(selected);
                    }
                }
            } else if (controls) {
                (controls as any).enabled = true;
            }
        };

        const onKeyDown = (event: KeyboardEvent) => {
            if (movedObjects.length > 0 || rotatedObjects.length > 0) return;
            if (event.key.toLowerCase() === "escape") {
                event.preventDefault();
                clearSelection();
            }
            if (event.key.toLowerCase() === "delete") {
                event.preventDefault();
                deleteSelection();
            }
        };

        const onContextMenu = (event: MouseEvent) => {
            event.preventDefault();
            if (!rightClickMoved.current) {
                // clearSelection();
            }
            rightClickMoved.current = false;
        };

        if (!toggleView && activeModule === "builder" && (toolMode === "cursor" || toolMode === "Move-Asset" || toolMode === "Rotate-Asset") && !selectedDecal && !selectedWall && !selectedAisle && !selectedFloor && !selectedFloorAsset && !selectedWallAsset && duplicatedObjects.length === 0 && pastedObjects.length === 0) {
            helper.enabled = true;
            canvasElement.addEventListener("pointermove", onPointerMove);
            canvasElement.addEventListener("pointerup", onPointerUp);
            canvasElement.addEventListener("pointerdown", onPointerDown);
            canvasElement.addEventListener("contextmenu", onContextMenu);
            canvasElement.addEventListener("keydown", onKeyDown);
        } else {
            helper.enabled = false;
            helper.dispose();
        }

        return () => {
            canvasElement.removeEventListener("pointerdown", onPointerDown);
            canvasElement.removeEventListener("pointermove", onPointerMove);
            canvasElement.removeEventListener("contextmenu", onContextMenu);
            canvasElement.removeEventListener("pointerup", onPointerUp);
            canvasElement.removeEventListener("keydown", onKeyDown);
            helper.enabled = false;
            helper.dispose();
        };
        // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [camera, controls, scene, toggleView, selectedAssets, copiedObjects, pastedObjects, duplicatedObjects, movedObjects, socket, rotatedObjects, activeModule, toolMode, selectedDecal, selectedWall, selectedAisle, selectedFloor, selectedFloorAsset, selectedWallAsset, productStore]);

    useEffect(() => {
        if (activeModule !== "builder" || (toolMode !== "cursor" && toolMode !== "Move-Asset" && toolMode !== "Rotate-Asset") || toggleView) {
            clearSelection();
        }
        // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [activeModule, toolMode, toggleView]);

    const selectAssets = useCallback(() => {
        selectionBox.endPoint.set(pointer.x, pointer.y, 0);
        if (controls) (controls as any).enabled = true;

        let selectedObjects = selectionBox.select();
        let Objects = new Set<THREE.Object3D>();

        selectedObjects.forEach((object) => {
            let currentObject: THREE.Object3D | null = object;
            while (currentObject) {
                if (currentObject.userData.modelUuid && !currentObject.userData.wallAssetType) {
                    Objects.add(currentObject);
                    break;
                }
                currentObject = currentObject.parent || null;
            }
        });

        if (Objects.size === 0) {
            // clearSelection();
            return;
        }

        const updatedSelections = new Set(selectedAssets);
        Objects.forEach((obj) => {
            updatedSelections.has(obj) ? updatedSelections.delete(obj) : updatedSelections.add(obj);
        });

        const selected = Array.from(updatedSelections);

        setSelectedAssets(selected);
    }, [selectionBox, pointer, controls, selectedAssets, setSelectedAssets]);

    const clearSelection = () => {
        setPastedObjects([]);
        setDuplicatedObjects([]);
        setSelectedAssets([]);
    };

    const deleteSelection = () => {
        if (selectedAssets.length > 0 && duplicatedObjects.length === 0 && pastedObjects.length === 0) {
            const undoActions: UndoRedo3DAction[] = [];
            const assetsToDelete: AssetData[] = [];

            const selectedUUIDs = selectedAssets.map((mesh: THREE.Object3D) => mesh.uuid);

            selectedAssets.forEach((selectedMesh: THREE.Object3D) => {
                const asset = getAssetById(selectedMesh.userData.modelUuid);
                if (!asset) return;

                if (!socket?.connected) {
                    // REST

                    deleteFloorAssetApi({
                        modelUuid: selectedMesh.userData.modelUuid,
                        modelName: selectedMesh.userData.modelName,
                        versionId: selectedVersion?.versionId || "",
                        projectId: projectId || "",
                    });
                } else {
                    // SOCKET

                    const data = {
                        organization,
                        modelUuid: selectedMesh.userData.modelUuid,
                        modelName: selectedMesh.userData.modelName,
                        socketId: socket.id,
                        projectId,
                        versionId: selectedVersion?.versionId || "",
                        userId,
                    };

                    socket.emit("v1:model-asset:delete", data);
                }

                eventStore.getState().removeEvent(selectedMesh.uuid);
                const updatedEvents = productStore.getState().deleteEvent(selectedMesh.uuid);

                updatedEvents.forEach((event) => {
                    updateBackend(productStore.getState().selectedProduct.productName, productStore.getState().selectedProduct.productUuid, projectId || "", event);
                });

                removeAsset(selectedMesh.uuid);

                echo.success("Model Removed!");

                selectedMesh.traverse((child: THREE.Object3D) => {
                    if (child instanceof THREE.Mesh) {
                        if (child.geometry) child.geometry.dispose();
                        if (Array.isArray(child.material)) {
                            child.material.forEach((material) => {
                                if (material.map) material.map.dispose();
                                material.dispose();
                            });
                        } else if (child.material) {
                            if (child.material.map) child.material.map.dispose();
                            child.material.dispose();
                        }
                    }
                });

                assetsToDelete.push({
                    type: "Asset",
                    assetData: asset,
                    timeStap: new Date().toISOString(),
                });
            });

            if (assetsToDelete.length === 1) {
                undoActions.push({
                    module: "builder",
                    actionType: "Asset-Delete",
                    asset: assetsToDelete[0],
                });
            } else {
                undoActions.push({
                    module: "builder",
                    actionType: "Assets-Delete",
                    assets: assetsToDelete,
                });
            }

            push3D({
                type: "Scene",
                actions: undoActions,
            });

            selectedUUIDs.forEach((uuid: string) => {
                removeAsset(uuid);
            });

            echo.warn("Selected models removed!");
            clearSelection();
        }
    };

    return (
        <>
            <MoveControls3D boundingBoxRef={boundingBoxRef} />

            <RotateControls3D />

            <DuplicationControls3D />

            <CopyPasteControls3D />

            <TransformControls3D />
        </>
    );
};

export default SelectionControls3D;