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Server Implementation of the Language Server Protocol for Apache Camel

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/**
 * 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.documentsymbol;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

import org.apache.camel.parser.model.CamelEndpointDetails;
import org.apache.camel.parser.model.CamelNodeDetails;
import org.eclipse.lsp4j.DocumentSymbol;
import org.eclipse.lsp4j.Range;
import org.eclipse.lsp4j.SymbolInformation;
import org.eclipse.lsp4j.SymbolKind;
import org.eclipse.lsp4j.TextDocumentItem;
import org.eclipse.lsp4j.jsonrpc.messages.Either;

import com.github.cameltooling.lsp.internal.catalog.util.CamelNodeDetailsUtils;

public abstract class AbstractDocumentSymbolProcessor {

	protected TextDocumentItem textDocumentItem;

	protected AbstractDocumentSymbolProcessor(TextDocumentItem textDocumentItem) {
		this.textDocumentItem = textDocumentItem;
	}

	protected List> createSymbolInformations(List camelNodes, List endpoints) {
		List> symbolInformations = new ArrayList<>();
		if (camelNodes != null) {
			for (CamelNodeDetails camelNodeDetails : camelNodes) {
				Range range = new CamelNodeDetailsUtils().computeRange(camelNodeDetails, textDocumentItem);
				Optional componentName = endpoints.stream()
						.filter(ced -> Integer.valueOf(ced.getLineNumber()) - 1 == range.getStart().getLine())
						.map(CamelEndpointDetails::getEndpointUri)
						.map(this::shortEndpoint)
						.findFirst();
				symbolInformations.add(createSymbolInformation(camelNodeDetails, range, componentName));
				symbolInformations.addAll(createSymbolInformations(camelNodeDetails.getOutputs(), endpoints));
			}
		}
		return symbolInformations;
	}

	private Either createSymbolInformation(CamelNodeDetails camelNodeDetails, Range range, Optional componentPath) {
		String nodeDetailsName = camelNodeDetails.getName();
		return Either.forRight(
				new DocumentSymbol(
						componentPath.isPresent() ? nodeDetailsName + " " + componentPath.get() : nodeDetailsName,
						SymbolKind.Field,
						range,
						range));
	}


	private String shortEndpoint(String uri) {
	    int pos = uri.indexOf('?');
	    return pos != -1 ? uri.substring(0, pos) : uri;
	}

}