com.github.saphyra.randwo.item.service.delete.ContainsAllItemDeletionProcessor Maven / Gradle / Ivy

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package com.github.saphyra.randwo.item.service.delete;

import java.util.List;
import java.util.UUID;
import java.util.stream.Collectors;

import org.springframework.stereotype.Component;

import com.github.saphyra.randwo.item.domain.DeleteItemRequest;
import com.github.saphyra.randwo.item.domain.ItemDeleteMethod;
import com.github.saphyra.randwo.mapping.itemlabel.domain.ItemLabelMapping;
import com.github.saphyra.randwo.mapping.itemlabel.repository.ItemLabelMappingDao;
import lombok.RequiredArgsConstructor;

@Component
@RequiredArgsConstructor
public class ContainsAllItemDeletionProcessor implements ItemDeletionProcessor {
    private final DeleteItemService deleteItemService;
    private final ItemLabelMappingDao itemLabelMappingDao;

    @Override
    public boolean canProcess(ItemDeleteMethod itemDeleteMethod) {
        return ItemDeleteMethod.CONTAINS_ALL == itemDeleteMethod;
    }

    @Override
    public void process(DeleteItemRequest request) {
        collectItemIds(request.getLabelIds()).stream()
            .filter(itemId -> shouldDelete(itemId, request.getLabelIds()))
            .forEach(deleteItemService::delete);
    }

    private List collectItemIds(List labelIds) {
        return labelIds.stream()
            .flatMap(labelId -> itemLabelMappingDao.getByLabelId(labelId).stream())
            .map(ItemLabelMapping::getItemId)
            .distinct()
            .collect(Collectors.toList());
    }

    private boolean shouldDelete(UUID itemId, List labelIds) {
        return labelIds.stream()
            .allMatch(labelId -> itemLabelMappingDao.findByItemIdAndLabelId(itemId, labelId).isPresent());
    }
}