PromoCodeDiscount.java

/**
 * This file is part of alf.io.
 *
 * alf.io is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * alf.io is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with alf.io.  If not, see <http://www.gnu.org/licenses/>.
 */
package alfio.model;

import java.math.BigDecimal;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.*;

import alfio.util.Json;
import ch.digitalfondue.npjt.ConstructorAnnotationRowMapper.Column;
import alfio.util.MonetaryUtil;
import com.google.gson.reflect.TypeToken;
import lombok.Getter;

@Getter
public class PromoCodeDiscount {
    
    public enum DiscountType {
        FIXED_AMOUNT, PERCENTAGE
    }

    private final int id;
    private final String promoCode;
    private final Integer eventId;
    private final Integer organizationId;
    private final ZonedDateTime utcStart;
    private final ZonedDateTime utcEnd;
    private final int discountAmount;
    private final DiscountType discountType;
    private final Set<Integer> categories;
    
    public PromoCodeDiscount(@Column("id")int id, 
            @Column("promo_code") String promoCode, 
            @Column("event_id_fk") Integer eventId,
            @Column("organization_id_fk") Integer organizationId,
            @Column("valid_from") ZonedDateTime utcStart, 
            @Column("valid_to") ZonedDateTime utcEnd, 
            @Column("discount_amount") int discountAmount,
            @Column("discount_type") DiscountType discountType,
            @Column("categories") String categories) {
        this.id = id;
        this.promoCode = promoCode;
        this.eventId = eventId;
        this.organizationId = organizationId;
        this.utcStart = utcStart;
        this.utcEnd = utcEnd;
        this.discountAmount = discountAmount;
        this.discountType = discountType;
        if(categories != null) {
            List<Integer> categoriesId = Json.GSON.<List<Integer>>fromJson(categories, new TypeToken<List<Integer>>(){}.getType());
            this.categories = categoriesId == null ? Collections.emptySet() : new TreeSet<>(categoriesId);
        } else {
            this.categories = Collections.emptySet();
        }
    }
    
    public boolean isCurrentlyValid(ZoneId eventZoneId, ZonedDateTime now) {
        return utcStart.withZoneSameInstant(eventZoneId).isBefore(now) && utcEnd.withZoneSameInstant(eventZoneId).isAfter(now);
    }
    
    public boolean isExpired(ZoneId eventZoneId, ZonedDateTime now) {
        return now.isAfter(utcEnd.withZoneSameInstant(eventZoneId));
    }
    
    public BigDecimal getFormattedDiscountAmount() {
        //TODO: apply this conversion only for some currency. Not all are cent based.
        return MonetaryUtil.centsToUnit(discountAmount);
    }
    
    public boolean getFixedAmount() {
        return DiscountType.FIXED_AMOUNT == discountType;
    }
}