/*******************************************************************************
* Copyright (c) 2016 Rogue Wave Software, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Rogue Wave Software, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.plugin.composer.server.projecttype;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import org.eclipse.che.api.core.ServerException;
import org.eclipse.che.api.project.server.FileEntry;
import org.eclipse.che.api.project.server.FolderEntry;
import org.eclipse.che.api.project.server.type.ReadonlyValueProvider;
import org.eclipse.che.api.project.server.type.ValueProvider;
import org.eclipse.che.api.project.server.type.ValueProviderFactory;
import org.eclipse.che.api.project.server.type.ValueStorageException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Collections;
import java.util.List;
import static org.eclipse.che.plugin.composer.shared.Constants.PACKAGE;
public class ComposerValueProviderFactory implements ValueProviderFactory {
@Override
public ValueProvider newInstance(FolderEntry projectFolder) {
return new ComposerValueProvider(projectFolder);
}
protected class ComposerValueProvider extends ReadonlyValueProvider {
protected FolderEntry projectFolder;
protected ComposerValueProvider(FolderEntry projectFolder) {
this.projectFolder = projectFolder;
}
@Override
public List<String> getValues(String attributeName) throws ValueStorageException {
try {
if (projectFolder.getChild("composer.json") == null) {
return Collections.emptyList();
}
JsonObject model = readModel(projectFolder);
String value = "";
if (attributeName.equals(PACKAGE)) {
value = model.get("name").getAsString();
}
return Collections.singletonList(value);
} catch (ServerException | IOException e) {
throw new ValueStorageException("Can't read composer.json : " + e.getMessage());
}
}
private JsonObject readModel(FolderEntry projectFolder) throws ServerException, IOException {
FileEntry composerFile = (FileEntry) projectFolder.getChild("composer.json");
Reader reader = new BufferedReader(new InputStreamReader(composerFile.getInputStream()));
return new Gson().fromJson(reader, JsonObject.class);
}
}
}