package com.ufund.api.ufundapi.service;

import java.io.IOException;
import java.util.Arrays;

import com.ufund.api.ufundapi.model.Need;
import com.ufund.api.ufundapi.persistence.CupboardDAO;

public class CupboardService {

    private final CupboardDAO cupboardDAO;

    public class DuplicateKeyException extends Exception {

        public DuplicateKeyException(String message) {
            super(message);
        }

    }

    public CupboardService(CupboardDAO cupboardDAO) {
        this.cupboardDAO = cupboardDAO;
    }

    public Need createNeed(String name, int maxGoal, Need.GoalType goalType) throws IOException, DuplicateKeyException {
        
        Need need = new Need(name, goalType, maxGoal);

        if (need.getMaxGoal() <= 0) {
            throw new IllegalArgumentException("Max Goal must be greater than zero");
        } else {
            for (Need searchNeed : cupboardDAO.getNeeds()) {
                if (need.getName().equalsIgnoreCase(searchNeed.getName())) {
                    throw new DuplicateKeyException("Duplicate names are not allowed");
                }
            }
            return cupboardDAO.addNeed(need);
        }
        
    }

    public Need[] getNeeds() throws IOException {
        return cupboardDAO.getNeeds();
    }

    /**
     * Returns an array of needs filtered by a search
     *
     * @param search The search substring
     * @return The requested array
     * @throws IOException 
     */
    public Need[] searchNeeds(String search) throws IOException {
        return Arrays.stream(cupboardDAO.getNeeds())
                .filter(i -> i.getName().toLowerCase().contains(search.toLowerCase()))
                .toArray(Need[]::new);
    }

    /**
     * @param id
     * @return
     * @throws IOException
     */
    public Need getNeed(int id) throws IOException {
        return cupboardDAO.getNeed(id);
    }

    /**
     * 
     * @param need
     * @return
     * @throws IOException
     */
    public Need updateNeed(Need need) throws IOException {
        return cupboardDAO.updateNeed(need);
    }

    public boolean deleteNeed(int id) throws IOException {
        return cupboardDAO.deleteNeed(id);
    }

    
}