import {
    Category 
} from "../../../models/Category";
import {
    UpdateCategoryInput, 
    UpdateCategoryResult 
} from "./types";

const updateCategory = async (userID: string, input: UpdateCategoryInput): Promise<UpdateCategoryResult> => {
    try {
        const {
            categoryID,
            ...updateFields
        } = input;

        const category = await Category.findOne({
            _id: categoryID,
            userID
        });

        if (!category) {
            return {
                message: "category-not-found",
                code: 404
            };
        }

        const updatedCategory = await Category.findByIdAndUpdate(
            categoryID,
            updateFields,
            {
                new: true //güncelledikten sonra döndürmesi için
            }
        );
        
        if (!updatedCategory){
            return {
                message: "category-not-found",
                code: 404
            };
        }

        return {
            message: "category-updated",
            code: 200,
            payload: {
                category: {
                    _id: updatedCategory._id.toString(),
                    title: updatedCategory.title,
                    index: updatedCategory.index
                }
            }
        };
    } catch (error) {
        console.error("UpdateCategory error:", error);
        return {
            message: "internal-server-error",
            code: 500 
        };
    }
};

export default updateCategory;