/*
 * Copyright 2005 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed 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.drools.compiler.compiler;

import org.drools.compiler.commons.jci.problems.CompilationProblem;
import org.drools.compiler.lang.descr.BaseDescr;

public class DescrBuildWarning extends DroolsWarning {
    private BaseDescr parentDescr;
    private BaseDescr descr;
    private Object    object;
    private String    message;
    private int[]     errorLines = new int[1];

    public DescrBuildWarning( final BaseDescr parentDescr,
                              final BaseDescr descr,
                              final Object object,
                              final String message ) {
        super( descr.getResource() != null ? descr.getResource() : ( parentDescr != null ? parentDescr.getResource() : null ) );
        this.parentDescr = parentDescr;
        this.descr = descr;
        this.object = object;
        this.message = message;
        this.errorLines[0] = getLine();
    }

    public BaseDescr getParentDescr() {
        return this.parentDescr;
    }

    public BaseDescr getDescr() {
        return this.descr;
    }

    public Object getObject() {
        return this.object;
    }

    public int[] getLines() {
        return this.errorLines;
    }

    /** 
     * This will return the line number of the error, if possible
     * Otherwise it will be -1
     */
    public int getLine() {
        return this.descr != null ? this.descr.getLine() : -1;
    }

    public int getColumn() {
        return this.descr != null ? this.descr.getColumn() : -1;
    }

    public String getMessage() {
        String summary = this.message;
        if ( this.object instanceof CompilationProblem[] ) {
            final CompilationProblem[] problem = (CompilationProblem[]) this.object;
            for ( int i = 0; i < problem.length; i++ ) {
                if ( i != 0 ) {
                    summary = summary + "\n" + problem[i].getMessage();
                } else {
                    summary = summary + " " + problem[i].getMessage();
                }
            }

        }
        return summary;
    }

    public String toString() {
        final StringBuilder buf = new StringBuilder();
        buf.append( this.message );
        buf.append( " : " );
        buf.append( this.parentDescr );
        buf.append( "\n" );
        if ( this.object instanceof CompilationProblem[] ) {
            final CompilationProblem[] problem = (CompilationProblem[]) this.object;
            for ( int i = 0; i < problem.length; i++ ) {
                buf.append( "\t" );
                buf.append( problem[i] );
                buf.append( "\n" );
            }
        } else if ( this.object != null ) {
            buf.append( this.object );
        }
        return buf.toString();
    }
}
