Essensbestellungsverwaltung/src/main/java/com/bib/essensbestellungsverwaltung/FoodMgr.java

package com.bib.essensbestellungsverwaltung;
/*
    @author Malte Schulze Hobeling
 */

import java.util.ArrayList;
import java.util.List;

public class FoodMgr {
    /**
     * inserts a food int to the database and creates the food_restriction entries
     * @param foodData name, description, isdessert, food_typeid
     * @param allergyData allergyids
     * @return id of food or -1
     */
    public static long createFood(String[] foodData, String[] allergyData){
        String[] foodH = {"name","description","isDessert","food_typeid"};
        String[] food_restrictionH = {"foodid","allergyid"};
        long id = Database.insert("food",foodH,foodData);
        if(allergyData.length > 0){
            String sId = String.valueOf(id);
            for (String allergyId : allergyData) {
                String[] food_restrictionD = {sId,allergyId};
                Database.insert("food_restriction",food_restrictionH, food_restrictionD);
            }
        }
        return id;
    }

    /**
     * inserts a food_plan into the database
     * @param food_planData date[YYYY-MM-DD], foodid[vegan], foodid, foodid[dessert,vegan], foodid[dessert]
     * @return id of food_plan or -1
     */
    public static long createFood_plan(String[] food_planData){
        String[] food_planH = {"date","food1","food2","dessert1","dessert2"};
        return Database.insert("food_plan",food_planH,food_planData);
    }

    /**
     * returns all non desserts or all desserts
     * @param isDessert true for only desserts false for non desserts
     * @return a list of all non desserts or all desserts
     */
    public static List<String> getFood(boolean isDessert){
        String[] foodH = {"isDessert"};
        String[] foodD = {(isDessert ? "1" : "0")};
        return Database.select("food",foodH,foodD);
    }

    /**
     * getFood but returns only vegan food
     * @param isDessert true for only desserts false for non desserts
     * @return a list of all vegan non desserts or all vegan desserts
     */
    public static List<String> getVeganFood(boolean isDessert){
        String[] foodH = {"isDessert","food_typeid"};
        String[] foodD = {(isDessert ? "1" : "0"),"1"};
        return Database.select("food",foodH,foodD);
    }

    /**
     * returns a food_plan for a day
     * @param date YYYY-MM-DD one day
     * @return food_plan for date
     */
    public static List<String> getFood_plan(String date){
        String[] food_planH = {"date"};
        String[] food_planD = {date};
        return Database.select("food_plan",food_planH,food_planD);
    }

    public static List<String> getFoodById(long id){
        return Database.getEntryById("food",id);
    }

    /**
     * inserts the selected food into food_Selection if the food_plan has not been sent
     * @param food_selectionData childid, food_planid, foodid
     * @return id or -1
     */
    public static long createFood_selection(String[] food_selectionData){
        String[] food_selectionH = {"childid","food_planid","foodid"};
        List<String> food_plan = Database.getEntryById("food_plan",Long.parseLong(food_selectionData[1]));
        String[] food_planParts = food_plan.get(0).split(":");
        if(Long.parseLong(food_planParts[6]) == 0){
            return Database.insert("food_selection",food_selectionH,food_selectionData);
        }else {
            return -1;
        }
    }

    /**
     * accumulates the selected food for a given day and locks the corresponding food_plan
     * @param date YYYY-MM-DD day
     * @return the accumulated orders
     */
    public static List<String> getDayOrder(String date){
        List<String> orders = new ArrayList<>();
        List<String> food_plan = getFood_plan(date);
        String[] food_planParts = food_plan.get(0).split(":");
        for(int i = 2; i < 2+4; i++){
            List<String> food = getFoodById(Long.parseLong(food_planParts[i]));
            String[] foodParts = food.get(0).split(":");
            String foodName = foodParts[1];
            String[] food_selectionH = {"food_planid","foodid"};
            String[] food_selectionD = {food_planParts[0],foodParts[0]};
            int count = Database.count("food_selection",food_selectionH,food_selectionD);
            orders.add(foodName+":"+count);
        }
        String[] updateH = {"id","issent"};
        String[] updateD = {food_planParts[0],"1"};
        if(Database.update("food_plan",updateH,updateD) < 0){
            System.out.println("Fehler");
        }
        return orders;
    }
}