/*
 * Copyright (c) 2007-2009, Osmorc Development Team
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright notice, this list
 *       of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this
 *       list of conditions and the following disclaimer in the documentation and/or other
 *       materials provided with the distribution.
 *     * Neither the name of 'Osmorc Development Team' nor the names of its contributors may be
 *       used to endorse or promote products derived from this software without specific
 *       prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.jetbrains.lang.manifest.highlighting;

import com.intellij.lang.annotation.AnnotationHolder;
import com.intellij.lang.annotation.Annotator;
import com.intellij.lang.annotation.HighlightSeverity;
import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.lang.manifest.ManifestBundle;
import org.jetbrains.lang.manifest.header.HeaderParser;
import org.jetbrains.lang.manifest.header.HeaderParserRepository;
import org.jetbrains.lang.manifest.psi.Header;

/**
 * @author Robert F. Beeger (robert@beeger.net)
 */
final class HeaderAnnotator implements Annotator {
  @Override
  public void annotate(@NotNull PsiElement psiElement, @NotNull AnnotationHolder holder) {
    if (psiElement instanceof Header header) {
      String name = header.getName();
      if (!isValidName(name)) {
        holder.newAnnotation(HighlightSeverity.ERROR, ManifestBundle.message("header.name.invalid")).range(header.getNameElement()).create();
      }
      else {
        HeaderParser headerParser = HeaderParserRepository.getInstance().getHeaderParser(name);
        if (headerParser != null) {
          headerParser.annotate(header, holder);
        }
      }
    }
  }

  private static boolean isValidName(String name) {
    for (int i = 0; i < name.length(); i++) {
      char c = name.charAt(i);
      if (!(c == '-' || c == '_' || Character.isLetterOrDigit(c))) {
        return false;
      }
    }

    return true;
  }
}
