/*
 * Copyright 2000-2014 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.jetbrains.python.inspections.quickfix;

import com.intellij.modcommand.ModPsiUpdater;
import com.intellij.modcommand.PsiUpdateModCommandQuickFix;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.jetbrains.python.PyPsiBundle;
import com.jetbrains.python.psi.LanguageLevel;
import com.jetbrains.python.psi.PyElementGenerator;
import com.jetbrains.python.psi.PyExpression;
import com.jetbrains.python.psi.PyRaiseStatement;
import org.jetbrains.annotations.NotNull;

public class ReplaceRaiseStatementQuickFix extends PsiUpdateModCommandQuickFix {
  @Override
  public @NotNull String getFamilyName() {
    return PyPsiBundle.message("INTN.replace.raise.statement");
  }

  @Override
  public void applyFix(@NotNull Project project, @NotNull PsiElement element, @NotNull ModPsiUpdater updater) {
    if (element instanceof PyRaiseStatement) {
      PyExpression[] expressions = ((PyRaiseStatement)element).getExpressions();
      PyElementGenerator elementGenerator = PyElementGenerator.getInstance(project);
      String newExpressionText = expressions[0].getText() + "(" + expressions[1].getText() + ")";
      if (expressions.length == 2) {
        element.replace(
          elementGenerator.createFromText(LanguageLevel.forElement(element), PyRaiseStatement.class, "raise " + newExpressionText));
      }
      else if (expressions.length == 3) {
        element.replace(elementGenerator.createFromText(LanguageLevel.forElement(element), PyRaiseStatement.class,
                                                        "raise " +
                                                        newExpressionText +
                                                        ".with_traceback(" +
                                                        expressions[2].getText() +
                                                        ")"));
      }
    }
  }
}
