/*
 * 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
 *
 *   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 org.apache.maven.repository.legacy;

import javax.inject.Named;
import javax.inject.Singleton;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

import org.apache.maven.wagon.ConnectionException;
import org.apache.maven.wagon.InputData;
import org.apache.maven.wagon.OutputData;
import org.apache.maven.wagon.ResourceDoesNotExistException;
import org.apache.maven.wagon.StreamWagon;
import org.apache.maven.wagon.TransferFailedException;
import org.apache.maven.wagon.authentication.AuthenticationException;
import org.apache.maven.wagon.authorization.AuthorizationException;
import org.apache.maven.wagon.resource.Resource;

@Named("string")
@Singleton
public class StringWagon extends StreamWagon {
    private Map<String, String> expectedContent = new HashMap<>();

    public void addExpectedContent(String resourceName, String expectedContent) {
        this.expectedContent.put(resourceName, expectedContent);
    }

    public String[] getSupportedProtocols() {
        return new String[] {"string"};
    }

    @Override
    public void closeConnection() throws ConnectionException {}

    @Override
    public void fillInputData(InputData inputData)
            throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException {
        Resource resource = inputData.getResource();

        String content = expectedContent.get(resource.getName());

        if (content != null) {
            resource.setContentLength(content.length());
            resource.setLastModified(System.currentTimeMillis());

            inputData.setInputStream(new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8)));
        } else {
            throw new ResourceDoesNotExistException("No content provided for " + resource.getName());
        }
    }

    @Override
    public void fillOutputData(OutputData outputData) throws TransferFailedException {
        outputData.setOutputStream(new ByteArrayOutputStream());
    }

    @Override
    protected void openConnectionInternal() throws ConnectionException, AuthenticationException {}

    public void clearExpectedContent() {
        expectedContent.clear();
    }
}
