import {StoccaTreDbConn, WithoutId} from "../../database.ts";
import {IngredientModel} from "./IngredientModel.ts";

export default class IngredientCollection {
    private dbConnection: StoccaTreDbConn;
    private mapById: Map<number, IngredientModel> = new Map<number, IngredientModel>();
    private allGotten = false;

    constructor(database: StoccaTreDbConn) {
        this.dbConnection = database;
    }

    async addIngredient(ingredient: WithoutId<IngredientModel>): Promise<any> {
        const result = await this.dbConnection.query<any>(
            `INSERT INTO ingredients (id, name, displayName, displayNameDE) VALUES (NULL, '${ingredient.name}', '${ingredient.displayName}', '${ingredient.displayNameDE}');`
        );
        return result;
    }

    async getAllIngredients(): Promise<Maybe<IterableIterator<IngredientModel>>> {
        if (!this.allGotten) {
            const result = await this.dbConnection.query<IngredientModel[]>("SELECT * FROM ingredients");
            if (result.just) {
                result.just.forEach((ingredient) => this.mapById.set(ingredient.id, ingredient));
            } else {
                return result;
            }
            this.allGotten = true;
        }
        return {
            just: this.mapById.values(),
            error: null,
        };
    }
}