org.metaeffekt.artifact.resolver.url.UrlArtifactReference Maven / Gradle / Ivy

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/*
 * Copyright 2021-2024 the original author or authors.
 *
 * 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 org.metaeffekt.artifact.resolver.url;

import lombok.Getter;
import org.apache.commons.lang3.StringUtils;
import org.metaeffekt.artifact.resolver.generic.FileLocation;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Base64;

public class UrlArtifactReference {

    @Getter
    String url;

    public UrlArtifactReference(String url) {
        this.url = url;
    }

    public String deriveDownloadBaseDir() {
        try {
            final URL boxedUrl = new URL(url);
            final String host = boxedUrl.getHost();
            final int port = boxedUrl.getPort();

            String base = host;
            if (port > 0) {
                base += "@" + port;
            }
            return base;
        } catch (MalformedURLException e) {
            throw new IllegalStateException("Provided URL malformed: " + url);
        }
    }

    public String deriveResourceName() {
        try {
            final URL boxedUrl = new URL(url);
            String path = boxedUrl.getPath();
            final String query = boxedUrl.getQuery();

            // cut off trailing slash
            if (path.endsWith("/")) {
                path = path.substring(0, path.length() - 2);
            }

            if (path.startsWith("/")) {
                path = path.substring(1);
            }

            path = path.replace("/", "_");
            return path;
        } catch (MalformedURLException e) {
            throw new IllegalStateException("Provided URL malformed: " + url);
        }
    }

    public String deriveDownloadFileName() {
        try {
            final URL boxedUrl = new URL(url);
            String path = boxedUrl.getPath();
            final String query = boxedUrl.getQuery();

            // cut off trailing slash
            if (path.endsWith("/")) {
                path = path.substring(0, path.length() - 2);
            }

            if (path.startsWith("/")) {
                path = path.substring(1);
            }

            path = path.replace("/", "_");

            if (StringUtils.isNotEmpty(query)) {
                path = path + "@" + Base64.getEncoder().encodeToString(query.getBytes());
            }

            return path;
        } catch (MalformedURLException e) {
            throw new IllegalStateException("Provided URL malformed: " + url);
        }
    }

    public FileLocation deriveFileLocation() {
        FileLocation fileLocation = new FileLocation();
        fileLocation.setEcosystem("www");
        fileLocation.setFilename(deriveDownloadFileName());
        fileLocation.setDispatchName(deriveResourceName());
        fileLocation.setResourceQualifier(deriveDownloadBaseDir().replace("/", "_"));
        return fileLocation;

    }
}