/*
 * 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.
 *
 *   SPDX-License-Identifier: Apache-2.0
 */

package org.apache.jena.rdfpatch.changes;

import java.util.Objects;

import org.apache.jena.graph.Node;
import org.apache.jena.rdfpatch.RDFPatchConst;
import org.apache.jena.rdfpatch.system.Printer;

public class RDFChangesLogSummary extends RDFChangesCounter {
    final private Printer printer;
    private Node node = null;

//    public RDFChangesLogSummary() { this(RDFChangesLog::printer) ; }

    public RDFChangesLogSummary(Printer printer) {
        this.printer = printer;
    }

    @Override
    public void header(String field, Node value) {
        if ( Objects.equals(field, RDFPatchConst.ID) )
            node = value;
        super.header(field, value);
    }

    // 6 chars of UUID.
    private static int AbbrevUuidLen = "uuid:".length()+6;

    @Override
    public void finish() {
        if ( summary.getDepth() != 0 )
            return;

        String s = "unset";
        if ( node != null ) {
            if ( node.isURI())
                s = node.getURI();
            else if ( node.isBlank() )
                s = node.getBlankNodeLabel();
            else
                s = node.getLiteralLexicalForm();
        }
        if ( s.startsWith("uuid:") && s.length() > AbbrevUuidLen )
            //s = s.substring(0, 11)+"...";
            s = s.substring(0, 11);

        printer.print("%s :: Add %d :: Del %d :: P-Add %d :: P-Del %d",
                      s,
                      summary.countAddData,
                      summary.countDeleteData,
                      summary.countAddPrefix,
                      summary.countDeletePrefix);
        super.reset();
    }
}

