/*
 * Copyright 2005 JBoss Inc
 *
 * 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;

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

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

    public DescrBuildError(final BaseDescr parentDescr,
                           final BaseDescr descr,
                           final Object object,
                           final String message) {
        super();
        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[] getErrorLines() {
        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.replaceAll( "\\[Line: \\d+, Column: \\d+\\]", "[Line: "+this.getLine()+", Column: "+this.getColumn()+"]" ) );
        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();
    }

    //    private String createMessage( String message ) {
    //        StringBuilder detail = new StringBuilder();
    //        detail.append( this.message );
    //        detail.append( " : " );
    //        detail.append( this.rule );
    //        detail.append( "\n" );
    //        if( object instanceof CompilationProblem[] ) {
    //            CompilationProblem[] cp = (CompilationProblem[]) object;
    //            this.errorLines = new int[cp.length];
    //            for( int i = 0; i < cp.length ; i ++ ) {
    //               this.errorLines[i] = cp[i].getStartLine() - this.descr.getOffset() + this.descr.getLine() - 1;
    //               detail.append( this.rule.getName() );
    //               detail.append( " (line:" );
    //               detail.append( this.errorLines[i] );
    //               detail.append( "): " );
    //               detail.append( cp[i].getMessage() );
    //               detail.append( "\n" );
    //            }
    //        } else {
    //            this.errorLines = new int[0];
    //        }
    //        return "[ "+this.rule.getName()+" : "+message + "\n"+detail.toString()+" ]";
    //    }

}
