import mongoose from "mongoose";
import {
    RecommendedProduct,
    Product,
    Menu
} from "../../../models";
import {
    DeleteProductResult,
    DeleteProductInput
} from "./types";

const deleteProduct = async (userID: string, input: DeleteProductInput): Promise<DeleteProductResult> => {
    try {
        const {
            productIDs
        } = input;

        if (productIDs.length === 0) {
            return {
                message: "productIDs-cannot-be-empty",
                code: 400
            };
        }

        const objectIdArray = productIDs.map(id => new mongoose.Types.ObjectId(id));

        const result = await Product.deleteMany({
            _id: {
                $in: objectIdArray
            },
            userID: userID
        });

        if (result.deletedCount === 0) {
            return {
                message: "product-not-found-or-unauthorized",
                code: 404
            };
        }

        await Menu.updateMany(
            {
                userID: userID
            },
            {
                $pull: {
                    products: {
                        productID: {
                            $in: objectIdArray
                        }
                    }
                }
            }
        );

        await RecommendedProduct.deleteMany({
            productID: {
                $in: objectIdArray
            },
            userID: userID
        });

        return {
            message: "product-deleted-successfully",
            code: 200
        };

    } catch (error) {
        console.error("DeleteProduct action error:", error);
        return {
            message: "internal-server-error",
            code: 500
        };
    }
};

export default deleteProduct;