/**
 *  Copyright 2005-2015 Red Hat, Inc.
 *
 *  Red Hat 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 io.fabric8.boot.commands.support;

import io.fabric8.api.FabricService;
import io.fabric8.api.ProfileService;

import java.util.List;

import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.apache.karaf.shell.console.Completer;
import org.apache.karaf.shell.console.completer.StringsCompleter;

@Component(immediate = true)
@Service({ VersionCompleter.class, Completer.class })
public final class VersionCompleter extends AbstractCompleterComponent {

    @Reference
    private FabricService fabricService;

    @Activate
    void activate() {
        activateComponent();
    }

    @Deactivate
    void deactivate() {
        deactivateComponent();
    }

    @Override
    public String getParameter() {
        return "--version";
    }

    @Override
    public int complete(String buffer, int cursor, List<String> candidates) {
        StringsCompleter delegate = new StringsCompleter();
        ProfileService profileService = fabricService.adapt(ProfileService.class);
        List<String> versions = profileService.getVersions();
        for (String version : versions) {
            delegate.getStrings().add(version);
        }
        return delegate.complete(buffer, cursor, candidates);
    }

    public FabricService getFabricService() {
        return fabricService;
    }

    public void setFabricService(FabricService fabricService) {
        this.fabricService = fabricService;
    }
}
