/*
    * 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
    *
   *   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 org.apache.maven.internal.impl;
  
  import org.apache.maven.api.services.BuilderProblem;
  
  /**
   * Describes a problem that was encountered during settings building. A problem can either be an exception that was
   * thrown or a simple string message. In addition, a problem carries a hint about its source, e.g. the settings file
   * that exhibits the problem.
   */
  class DefaultBuilderProblem implements BuilderProblem {
      final String source;
      final int lineNumber;
      final int columnNumber;
      final Exception exception;
      final String message;
      final Severity severity;
  
      DefaultBuilderProblem(
              String source, int lineNumber, int columnNumber, Exception exception, String message, Severity severity) {
          this.source = source;
          this.lineNumber = lineNumber;
          this.columnNumber = columnNumber;
          this.exception = exception;
          this.message = message;
          this.severity = severity;
      }
  
      @Override
      public String getSource() {
          return source;
      }
  
      @Override
      public int getLineNumber() {
          return lineNumber;
      }
  
      @Override
      public int getColumnNumber() {
          return columnNumber;
      }
  
      @Override
      public Exception getException() {
          return exception;
      }
  
      @Override
      public String getMessage() {
          return message;
      }
  
      @Override
      public Severity getSeverity() {
          return severity;
      }
  
      @Override
      public String getLocation() {
          StringBuilder buffer = new StringBuilder(256);
          if (getSource() != null && !getSource().isEmpty()) {
              buffer.append(getSource());
          }
          if (getLineNumber() > 0) {
              if (!buffer.isEmpty()) {
                  buffer.append(", ");
              }
              buffer.append("line ").append(getLineNumber());
          }
          if (getColumnNumber() > 0) {
              if (!buffer.isEmpty()) {
                  buffer.append(", ");
              }
              buffer.append("column ").append(getColumnNumber());
          }
          return buffer.toString();
      }
  
      @Override
      public String toString() {
          StringBuilder buffer = new StringBuilder(128);
         buffer.append('[').append(severity).append("]");
         String msg = message != null ? message : exception != null ? exception.getMessage() : null;
         if (msg != null && !msg.isEmpty()) {
             buffer.append(" ").append(msg);
         }
         String location = getLocation();
         if (!location.isEmpty()) {
             buffer.append(" @ ").append(location);
         }
         return buffer.toString();
     }
 }