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 * Contributor(s): Ilia Gromov

 */

package com.sun.tools.ide.analysis.modernize.impl;

import java.io.File;

import java.util.List;

import javax.swing.text.Document;

import javax.swing.text.Position;

import org.netbeans.editor.BaseDocument;

import org.netbeans.modules.cnd.api.model.CsmFile;

import org.netbeans.modules.cnd.modelutil.CsmUtilities;

import org.netbeans.spi.editor.hints.ChangeInfo;

import org.netbeans.spi.editor.hints.EnhancedFix;

import org.openide.filesystems.FileObject;

import org.openide.filesystems.FileUtil;

import org.openide.text.CloneableEditorSupport;

import org.openide.text.PositionRef;

/**

 *

 * @author Ilia Gromov

 */

public class ModernizeFix implements EnhancedFix {

    private final YamlParser.Replacement[] replacements;

    private final String text;

    private CloneableEditorSupport ces;

    private final PositionRef[] beg;

    private final PositionRef[] end;

    public ModernizeFix(List<YamlParser.Replacement> replacementList, String id) {

        this.beg = new PositionRef[replacementList.size()];

        this.end = new PositionRef[replacementList.size()];

        this.replacements = replacementList.toArray(new YamlParser.Replacement[replacementList.size()]);

        this.text = (id.startsWith("-")) ? id.substring(1) : id; //NOI18N

        for (int i = 0; i < replacements.length; i++) {

            YamlParser.Replacement replacement = replacements[i];

            FileObject fo = FileUtil.toFileObject(new File(replacement.filePath));

            CsmFile csmFile = CsmUtilities.getCsmFile(fo, false, false);

            if (csmFile != null) {

                ces = CsmUtilities.findCloneableEditorSupport(csmFile);

                if (ces != null) {

                    beg[i] = ces.createPositionRef(replacement.offset, Position.Bias.Forward);

                    end[i] = ces.createPositionRef(replacement.offset + replacement.length, Position.Bias.Backward);

                } else {

                }

            }

        }

    } //NOI18N

    @Override

    public String getText() {

        return "Apply replacement - " + text; //NOI18N

    }

    @Override

    public ChangeInfo implement() throws Exception {

        Document doc = CsmUtilities.openDocument(ces);

        if (doc instanceof BaseDocument) {

            Position min = beg[0];

            Position max = end[0];

            for (int i = 0; i < replacements.length; i++) {

                YamlParser.Replacement replacement = replacements[i];

                PositionRef b = beg[i];

                PositionRef e = end[i];

                if (b != null && e != null) {

                    int newBeg = b.getOffset();

                    int newLength = e.getOffset() - b.getOffset();

                    if (b.getOffset() < min.getOffset()) {

                        min = b;

                    }

                    if (e.getOffset() > max.getOffset()) {

                        max = e;

                    }

                    if (newLength < 1) {

                        // TODO: temp fix

                        newLength = 0;

                    }

                    ((BaseDocument) doc).replace(newBeg, newLength, replacement.replacementText, null);

                }

            }

            return new ChangeInfo(min, max);

        }

        return null;

    }

    @Override

    public CharSequence getSortText() {

        return Integer.toString(Integer.MIN_VALUE);

    }

    public YamlParser.Replacement[] getReplacements() {

        return replacements;

    }

}