com.greensopinion.finance.services.domain.CategorizerService.java Source code

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Here is the source code for com.greensopinion.finance.services.domain.CategorizerService.java

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/*******************************************************************************
 * Copyright (c) 2015, 2016 David Green.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.greensopinion.finance.services.domain;

import static com.google.common.base.Preconditions.checkNotNull;

import java.util.List;

import javax.inject.Inject;

import com.google.common.collect.ImmutableList;

public class CategorizerService {
    private final CategoriesService categoriesService;

    @Inject
    CategorizerService(CategoriesService categoriesService) {
        this.categoriesService = checkNotNull(categoriesService);
    }

    public List<Transaction> categorize(List<Transaction> transactions) {
        checkNotNull(transactions);
        ImmutableList.Builder<Transaction> builder = ImmutableList.builder();
        for (Transaction transaction : transactions) {
            builder.add(categorize(transaction));
        }
        return builder.build();
    }

    private Transaction categorize(Transaction transaction) {
        Categories categories = categoriesService.retrieve();
        for (Category category : categories.getCategories()) {
            if (category.matches(transaction)) {
                return transaction.withCategory(category);
            }
        }
        return transaction;
    }
}