OptionParamValueURIInstance.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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
 *
 *      https://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.github.cameltooling.lsp.internal.instancemodel;

import java.util.Collections;
import java.util.List;
import java.util.concurrent.CompletableFuture;

import org.apache.camel.catalog.CamelCatalog;
import org.eclipse.lsp4j.CompletionItem;
import org.eclipse.lsp4j.TextDocumentItem;

import com.github.cameltooling.lsp.internal.catalog.model.ComponentModel;
import com.github.cameltooling.lsp.internal.catalog.util.KameletsCatalogManager;
import com.github.cameltooling.lsp.internal.completion.CamelOptionValuesCompletionsFuture;
import com.github.cameltooling.lsp.internal.settings.SettingsManager;

/**
 * For a Camel URI "timer:timerName?delay=10s", it represents "10s"
 *
 */
public class OptionParamValueURIInstance extends CamelUriElementInstance {
	
	private String valueName;
	private OptionParamURIInstance optionParamURIInstance;

	public OptionParamValueURIInstance(OptionParamURIInstance optionParamURIInstance, String value, int startPosition, int endPosition) {
		super(startPosition, endPosition);
		this.optionParamURIInstance = optionParamURIInstance;
		this.valueName = value;
	}

	public String getValueName() {
		return valueName;
	}

	@Override
	public CompletableFuture<List<CompletionItem>> getCompletions(CompletableFuture<CamelCatalog> camelCatalog, int positionInCamelUri, TextDocumentItem docItem, SettingsManager settingsManager, KameletsCatalogManager kameletsCatalogManager) {
		if(getStartPositionInUri() <= positionInCamelUri && positionInCamelUri <= getEndPositionInUri()) {
			return camelCatalog.thenApply(new CamelOptionValuesCompletionsFuture(this, getFilter(positionInCamelUri)));
		} else {
			return CompletableFuture.completedFuture(Collections.emptyList());
		}
	}

	public OptionParamURIInstance getOptionParamURIInstance() {
		return optionParamURIInstance;
	}
	
	/**
	 * returns the filter string to be applied on the list of all completions
	 * 
	 * @return	the filter string or null if not to be filtered
	 */
	private String getFilter(int positionInUri) { 
		int len = positionInUri-getStartPositionInUri() -1;
		if (valueName != null && valueName.trim().length()>0 && getStartPositionInUri()!=positionInUri) {
			return valueName.length()>len ? valueName.substring(0, Math.max(1, len)) : valueName;
		}
		return null;
	}
	
	@Override
	public String getComponentName() {
		return optionParamURIInstance.getComponentName();
	}
	
	@Override
	public String getDescription(ComponentModel componentModel, KameletsCatalogManager kameletCatalogManager) {
		return optionParamURIInstance.getDescription(componentModel, kameletCatalogManager);
	}
	
	@Override
	public CamelURIInstance getCamelUriInstance() {
		return optionParamURIInstance.getCamelUriInstance();
	}
}