/*
 * Copyright 2000-2017 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 org.jetbrains.plugins.groovy.ext.spock;

import com.intellij.pom.PomDeclarationSearcher;
import com.intellij.pom.PomTarget;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiElement;
import com.intellij.psi.util.InheritanceUtil;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.util.Consumer;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrMethod;

import java.util.Map;

public final class SpockPomDeclarationSearcher extends PomDeclarationSearcher {
  @Override
  public void findDeclarationsAt(@NotNull PsiElement element, int offsetInElement, @NotNull Consumer<? super PomTarget> consumer) {
    String name = SpockUtils.getNameByReference(element);
    if (name == null) return;

    GrMethod method = PsiTreeUtil.getParentOfType(element, GrMethod.class);
    if (method == null) return;

    PsiClass containingClass = method.getContainingClass();
    if (containingClass == null) return;

    if (!InheritanceUtil.isInheritor(containingClass, SpockUtils.SPEC_CLASS_NAME)) return;

    Map<String, SpockVariableDescriptor> cachedValue = SpockUtils.getVariableMap(method);

    SpockVariableDescriptor descriptor = cachedValue.get(name);
    if (descriptor == null) return;

    if (descriptor.getNavigationElement() == element) {
      consumer.consume(descriptor.getVariable());
    }
  }
}
