/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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
 *
 *    https://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 org.grails.core.io;

import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

import org.springframework.core.io.Resource;

/**
 * Loads Resources from Strings that are registered as Mock resources.
 *
 * @author Graeme Rocher
 * @since 0.4
 */
public class MockStringResourceLoader extends MockResourceLoader {

    private Map<String, Resource> mockResources = new HashMap<>();

    @Override
    public Resource getResource(String location) {
        if (mockResources.containsKey(location)) {
            return mockResources.get(location);
        }

        return super.getResource(location);
    }

    /**
     * Registers a mock resource with the first argument as the location and the second as the contents
     * of the resource.
     *
     * @param location The location
     * @param res The resource itself
     */
    public void registerMockResource(String location, Resource res) {
        mockResources.put(location, res);
    }

    /**
     * Registers a mock resource with the first argument as the location and the second as the contents
     * of the resource.
     *
     * @param location The location
     * @param contents The contents of the resource
     */
    public void registerMockResource(String location, String contents) {
        mockResources.put(location, new GrailsByteArrayResource(contents.getBytes(StandardCharsets.UTF_8), location));
    }

    /**
     * Registers a mock resource with the first argument as the location and the second as the contents
     * of the resource.
     *
     * @param location The location
     * @param contents The contents of the resource
     */
    public void registerMockResource(String location, byte[] contents) {
        mockResources.put(location, new GrailsByteArrayResource(contents, location));
    }
}
