AvatarImpl.java
/*
* Copyright (c) 2023. Roland T. Lichti, Kaiserpfalz EDV-Service.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/*
* Libravatar -- Java Library for retrieving libravatars.
*
* The code in this package is taken from {@linkplain https://github.com/alessandroleite/libravatar-j}.
*
* It is licensed under a MIT license by Alessandro Leite.
*/
package de.kaiserpfalzedv.commons.core.libravatar;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.Locale;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.io.IOUtils;
import de.kaiserpfalzedv.commons.api.libravatar.Avatar;
import de.kaiserpfalzedv.commons.api.libravatar.AvatarException;
import de.kaiserpfalzedv.commons.api.libravatar.AvatarOptions;
import de.kaiserpfalzedv.commons.api.libravatar.LibravatarDefaultImage;
import jakarta.inject.Inject;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.ToString;
import lombok.experimental.Accessors;
import lombok.extern.slf4j.Slf4j;
@RequiredArgsConstructor(onConstructor = @__(@Inject))
@ToString(onlyExplicitlyIncluded = true)
@EqualsAndHashCode(onlyExplicitlyIncluded = true)
@Accessors(chain = true, fluent = false)
@Slf4j
public class AvatarImpl implements Avatar {
@ToString.Include
@EqualsAndHashCode.Include
@Getter
private final String email;
@Override
public byte[] download(final de.kaiserpfalzedv.commons.api.libravatar.AvatarOptions options) {
try (InputStream is = URI.create(this.buildUrl(options)).toURL().openStream()) {
return IOUtils.toByteArray(is);
} catch (final IOException e) {
throw new AvatarException(e);
}
}
@Override
public String buildUrl(final AvatarOptions options) {
log.debug("avatar build. https={}, sha256={}, size={}",
options.useHttps(), options.useSHA256(), options.imageSize());
final StringBuilder sb = new StringBuilder(
options.useHttps() ? options.secureBaseUri()
: options.baseUri());
sb.append(
options.useSHA256() ? DigestUtils.sha256Hex(this.email.toLowerCase(Locale.getDefault()).getBytes(Charset.defaultCharset()))
: DigestUtils.md5Hex(this.email.toLowerCase(Locale.getDefault()).getBytes(Charset.defaultCharset())));
sb.append("?s=").append(options.imageSize());
sb.append(
options.defaultImage() != LibravatarDefaultImage.DEFAULT ? "&d=" + options.defaultImage().getCode()
: "");
return sb.toString();
}
}