/*
 * Copyright 2000-2013 JetBrains s.r.o.
 *
 * 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 com.intellij.coldFusion.UI.editorActions.completionProviders;

import com.intellij.codeInsight.completion.CompletionParameters;
import com.intellij.codeInsight.completion.CompletionProvider;
import com.intellij.codeInsight.completion.CompletionResultSet;
import com.intellij.codeInsight.lookup.LookupElement;
import com.intellij.codeInsight.lookup.LookupElementBuilder;
import com.intellij.coldFusion.model.CfmlUtil;
import com.intellij.coldFusion.model.psi.CfmlComponentReference;
import com.intellij.coldFusion.model.psi.CfmlTag;
import com.intellij.coldFusion.model.psi.impl.CfmlAttributeImpl;
import com.intellij.psi.PsiElement;
import com.intellij.util.ProcessingContext;
import org.jetbrains.annotations.NotNull;

class CfmlAttributeValuesCompletionProvider extends CompletionProvider<CompletionParameters> {
  public void addCompletions(@NotNull final CompletionParameters parameters,
                             final ProcessingContext context,
                             @NotNull final CompletionResultSet result) {
    PsiElement element = parameters.getPosition();
    while (element != null && !(element instanceof CfmlAttributeImpl)) {
      element = element.getParent();
    }
    if (element == null) {
      return;
    }
    CfmlAttributeImpl attribute = (CfmlAttributeImpl)element;
    String attributeName = attribute.getFirstChild().getText();
    while (element != null && !(element instanceof CfmlTag)) {
      element = element.getParent();
    }
    if (element == null) {
      return;
    }
    CfmlTag tag = (CfmlTag)element;
    String tagName = tag.getTagName();

    String[] attributeValue = CfmlUtil.getAttributeValues(tagName, attributeName, parameters.getPosition().getProject());

    if ("type".equalsIgnoreCase(attributeName) && "cfargument".equalsIgnoreCase(tagName) ||
        "returntype".equalsIgnoreCase(attributeName) && "cffunction".equalsIgnoreCase(tagName)
       ) {
      Object[] objects =
        CfmlComponentReference.buildVariants(attribute.getPureAttributeValue(), element.getContainingFile(), element.getProject(), null, true);
      for(Object o:objects) {
        result.addElement((LookupElement)o);
      }
    }
    for (String s : attributeValue) {
      result.addElement(LookupElementBuilder.create(s).withCaseSensitivity(false));
    }
  }
}