import React, { useEffect, useRef, useState } from "react";
import { AddIcon, ArrowIcon, RemoveIcon, ResizeHeightIcon, } from "../../../icons/ExportCommonIcons";
import RenameInput from "../../../ui/inputs/RenameInput";
import { handleResize } from "../../../../functions/handleResizePannel";
import { useMainProduct, useSelectedAsset } from "../../../../store/simulation/useSimulationStore";
import { useProductStore } from "../../../../store/simulation/useProductStore";
import { generateUUID } from "three/src/math/MathUtils";
import RenderOverlay from "../../../templates/Overlay";
import EditWidgetOption from "../../../ui/menu/EditWidgetOption";
import { handleAddEventToProduct } from "../../../../modules/simulation/events/points/functions/handleAddEventToProduct";
import { useEventsStore } from "../../../../store/simulation/useEventsStore";
import { deleteEventDataApi } from "../../../../services/simulation/products/deleteEventDataApi";
import { upsertProductOrEventApi } from "../../../../services/simulation/products/UpsertProductOrEventApi";
import { deleteProductApi } from "../../../../services/simulation/products/deleteProductApi";
import { renameProductApi } from "../../../../services/simulation/products/renameProductApi";
import { determineExecutionMachineSequences } from "../../../../modules/simulation/simulator/functions/determineExecutionMachineSequences";
import ComparePopUp from "../../../ui/compareVersion/Compare";
import { useCompareStore, useSaveVersion, } from "../../../../store/builder/store";
import { useToggleStore } from "../../../../store/useUIToggleStore";
import { useProductContext } from "../../../../modules/simulation/products/productContext";
import { useParams } from "react-router-dom";

interface Event {
    modelName: string;
    modelId: string;
}

interface ListProps {
    val: Event;
}

const List: React.FC<ListProps> = ({ val }) => {
    return (
        <div className="process-container">
            <div className="value">{val.modelName}</div>
        </div>
    );
};

const Simulations: React.FC = () => {
    const productsContainerRef = useRef<HTMLDivElement>(null);
    const { products, addProduct, removeProduct, renameProduct, addEvent, removeEvent, getProductById, } = useProductStore();
    const { selectedProductStore } = useProductContext();
    const { selectedProduct, setSelectedProduct } = selectedProductStore();
    const { getEventByModelUuid } = useEventsStore();
    const { selectedAsset, clearSelectedAsset } = useSelectedAsset();
    const [openObjects, setOpenObjects] = useState(true);
    const [processes, setProcesses] = useState<Event[][]>();
    const { setToggleUI } = useToggleStore();
    const { projectId } = useParams();
    const { setMainProduct } = useMainProduct();

    const { comparePopUp, setComparePopUp } = useCompareStore();
    const { setIsVersionSaved } = useSaveVersion();

    const handleSaveVersion = () => {
        setIsVersionSaved(true);
        setComparePopUp(false);
        setToggleUI(false, false);
    };

    const handleAddProduct = () => {
        const id = generateUUID();
        const name = `Product ${products.length + 1}`;
        addProduct(name, id);
        upsertProductOrEventApi({
            productName: name,
            productUuid: id,
            projectId: projectId,
        });
    };

    const handleRemoveProduct = (productUuid: string) => {
        const currentIndex = products.findIndex((p) => p.productUuid === productUuid);
        const isSelected = selectedProduct.productUuid === productUuid;

        const updatedProducts = products.filter((p) => p.productUuid !== productUuid);

        if (isSelected) {
            if (updatedProducts.length > 0) {
                let newSelectedIndex = currentIndex;
                if (currentIndex >= updatedProducts.length) {
                    newSelectedIndex = updatedProducts.length - 1;
                }
                setSelectedProduct(
                    updatedProducts[newSelectedIndex].productUuid,
                    updatedProducts[newSelectedIndex].productName
                );
                setMainProduct(
                    updatedProducts[newSelectedIndex].productUuid,
                    updatedProducts[newSelectedIndex].productName
                );
            } else {
                setSelectedProduct("", "");
                setMainProduct("", "");
            }
        }

        removeProduct(productUuid);
        deleteProductApi({
            productUuid,
            projectId
        });
    };

    const handleRenameProduct = (productUuid: string, newName: string) => {
        renameProduct(productUuid, newName);
        renameProductApi({ productName: newName, productUuid, projectId: projectId || '' });
        if (selectedProduct.productUuid === productUuid) {
            setSelectedProduct(productUuid, newName);
            setMainProduct(productUuid, newName);
        }
    };

    const handleRemoveEventFromProduct = () => {
        if (selectedAsset) {

            deleteEventDataApi({
                productUuid: selectedProduct.productUuid,
                modelUuid: selectedAsset.modelUuid,
                projectId: projectId,
            });
            removeEvent(selectedProduct.productUuid, selectedAsset.modelUuid);
            clearSelectedAsset();
        }
    };

    useEffect(() => {
        const processes: Event[][] = [];
        const selectedProductData = getProductById(selectedProduct.productUuid);

        if (selectedProductData) {
            determineExecutionMachineSequences([selectedProductData]).then(
                (sequences) => {
                    sequences.forEach((sequence) => {
                        const events: Event[] =
                            sequence.map((event) => ({
                                modelName: event.modelName,
                                modelId: event.modelUuid,
                            })) || [];
                        processes.push(events);
                    });
                    setProcesses(processes);
                }
            );
        }

    }, [selectedProduct.productUuid, products]);

    return (
        <div className="simulations-container">
            <div className="header">Simulations</div>
            <div className="add-product-container">
                <div className="actions section">
                    <div className="header">
                        <div className="header-value">Products</div>
                        <button
                            id="add-simulation"
                            className="add-button"
                            onClick={handleAddProduct}
                        >
                            <AddIcon /> Add
                        </button>
                    </div>
                    <div
                        className="lists-main-container"
                        ref={productsContainerRef}
                        style={{ height: "120px" }}
                    >
                        <div className="list-container">
                            {products.map((product, index) => (
                                <div
                                    key={product.productUuid}
                                    className={`list-item ${selectedProduct.productUuid === product.productUuid
                                        ? "active"
                                        : ""
                                        }`}
                                >
                                    {/* eslint-disable-next-line */}
                                    <div
                                        className="value"
                                        onClick={() => {
                                            setSelectedProduct(product.productUuid, product.productName)
                                            setMainProduct(product.productUuid, product.productName)
                                        }}
                                    >
                                        <input
                                            type="radio"
                                            name="products"
                                            checked={selectedProduct.productUuid === product.productUuid}
                                            readOnly
                                        />
                                        <RenameInput
                                            value={product.productName}
                                            onRename={(newName) =>
                                                handleRenameProduct(product.productUuid, newName)
                                            }
                                        />
                                    </div>
                                    {products.length > 1 && (
                                        <button
                                            id="remove-product-button"
                                            className="remove-button"
                                            onClick={() => handleRemoveProduct(product.productUuid)}
                                        >
                                            <RemoveIcon />
                                        </button>
                                    )}
                                </div>
                            ))}
                        </div>
                        <button
                            className="resize-icon"
                            id="action-resize"
                            onMouseDown={(e: any) => handleResize(e, productsContainerRef)}
                        >
                            <ResizeHeightIcon />
                        </button>
                    </div>
                </div>

                <div className="simulation-process section">
                    <button
                        id="collapse-header"
                        className="collapse-header-container"
                        onClick={() => setOpenObjects(!openObjects)}
                    >
                        <div className="header">Process Flow</div>
                        <div className="arrow-container">
                            <ArrowIcon />
                        </div>
                    </button>
                    {openObjects &&
                        processes?.map((process, index) => (
                            <section key={index}>
                                {process.map((event, index) => (
                                    <List key={`${index}-${event.modelName}`} val={event} />
                                ))}
                            </section>
                        ))}
                </div>

                <div className="compare-simulations-container">
                    <div className="compare-simulations-header">
                        Need to Compare Layout?
                    </div>
                    <div className="content">
                        Click '<span>Compare</span>' to review and analyze the layout
                        differences between them.
                    </div>
                    <button className="input" onClick={() => setComparePopUp(true)}>
                        <input type="button" value={"Compare"} className="submit" />
                    </button>
                </div>
            </div>

            {selectedAsset && (
                <RenderOverlay>
                    <EditWidgetOption
                        options={["Add to Product", "Remove from Product"]}
                        onClick={(option) => {
                            if (option === "Add to Product") {
                                handleAddEventToProduct({
                                    event: getEventByModelUuid(selectedAsset.modelUuid),
                                    addEvent,
                                    selectedProduct,
                                    clearSelectedAsset,
                                    projectId: projectId || ''
                                });
                            } else {
                                handleRemoveEventFromProduct();
                            }
                        }}
                    />
                </RenderOverlay>
            )}

            {comparePopUp && (
                <RenderOverlay>
                    <ComparePopUp onClose={handleSaveVersion} />
                </RenderOverlay>
            )}
        </div>
    );
};

export default Simulations;