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// Copyright (C) 2014 The Android Open Source Project
//
// 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.google.gerrit.server.api.changes;
import static com.google.gerrit.server.api.ApiUtil.asRestApiException;
import com.google.gerrit.extensions.api.changes.FileApi;
import com.google.gerrit.extensions.common.DiffInfo;
import com.google.gerrit.extensions.restapi.BinaryResult;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.server.change.FileResource;
import com.google.gerrit.server.restapi.change.GetContent;
import com.google.gerrit.server.restapi.change.GetDiff;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;
class FileApiImpl implements FileApi {
interface Factory {
FileApiImpl create(FileResource r);
}
private final GetContent getContent;
private final GetDiff getDiff;
private final FileResource file;
@Inject
FileApiImpl(GetContent getContent, GetDiff getDiff, @Assisted FileResource file) {
this.getContent = getContent;
this.getDiff = getDiff;
this.file = file;
}
@Override
public BinaryResult content() throws RestApiException {
try {
return getContent.apply(file);
} catch (Exception e) {
throw asRestApiException("Cannot retrieve file content", e);
}
}
@Override
public DiffInfo diff() throws RestApiException {
try {
return getDiff.apply(file).value();
} catch (Exception e) {
throw asRestApiException("Cannot retrieve diff", e);
}
}
@Override
public DiffInfo diff(String base) throws RestApiException {
try {
return getDiff.setBase(base).apply(file).value();
} catch (Exception e) {
throw asRestApiException("Cannot retrieve diff", e);
}
}
@Override
public DiffInfo diff(int parent) throws RestApiException {
try {
return getDiff.setParent(parent).apply(file).value();
} catch (Exception e) {
throw asRestApiException("Cannot retrieve diff", e);
}
}
@Override
public DiffRequest diffRequest() {
return new DiffRequest() {
@Override
public DiffInfo get() throws RestApiException {
return FileApiImpl.this.get(this);
}
};
}
private DiffInfo get(DiffRequest r) throws RestApiException {
if (r.getBase() != null) {
getDiff.setBase(r.getBase());
}
if (r.getContext() != null) {
getDiff.setContext(r.getContext());
}
if (r.getIntraline() != null) {
getDiff.setIntraline(r.getIntraline());
}
if (r.getWhitespace() != null) {
getDiff.setWhitespace(r.getWhitespace());
}
r.getParent().ifPresent(getDiff::setParent);
try {
return getDiff.apply(file).value();
} catch (Exception e) {
throw asRestApiException("Cannot retrieve diff", e);
}
}
}