/*
 * Copyright 2000-2009 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.execution.testframework.sm.runner.ui.statistics;

import com.intellij.execution.testframework.sm.SMRunnerUtil;
import com.intellij.execution.testframework.sm.runner.SMTestProxy;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.util.ui.ListTableModel;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author Roman Chernyatchik
 */
public class StatisticsTableModel extends ListTableModel<SMTestProxy> {
  private static final Logger LOG = Logger.getInstance(StatisticsTableModel.class.getName());

  private SMTestProxy myCurrentSuite;

  public StatisticsTableModel() {
    super(new ColumnTest(), new ColumnDuration(), new ColumnResults());
    setSortable(false); // TODO: fix me
  }

  public void updateModelOnProxySelected(final SMTestProxy proxy) {
    final SMTestProxy newCurrentSuite = getCurrentSuiteFor(proxy);
    // If new suite differs from old suite we should reload table
    if (myCurrentSuite != newCurrentSuite) {
      myCurrentSuite = newCurrentSuite;
    }
    // update model to show new items in it
    SMRunnerUtil.addToInvokeLater(new Runnable() {
      public void run() {
        updateModel();
      }
    });
  }

  @Nullable
   public SMTestProxy getTestAt(final int rowIndex) {
    if (rowIndex < 0 || rowIndex > getItems().size()) {
      return null;
    }
    return getItems().get(rowIndex);
  }


  /**
   * Searches index of given test or suite. If finds nothing will retun -1
   * @param test Test or suite
   * @return Proxy's index or -1
   */
  public int getIndexOf(final SMTestProxy test) {
    for (int i = 0; i < getItems().size(); i++) {
      final SMTestProxy child = getItems().get(i);
      if (child == test) {
        return i;
      }
    }
    return -1;
  }

  /**
   * Update module in EDT
   */
  protected void updateModel() {
    LOG.assertTrue(SwingUtilities.isEventDispatchThread());

    // updates model
    setItems(getItemsForSuite(myCurrentSuite));
  }

  @NotNull
  private List<SMTestProxy> getItemsForSuite(@Nullable final SMTestProxy suite) {
    if (suite == null) {
      return Collections.emptyList();
    }

    final List<SMTestProxy> list = new ArrayList<SMTestProxy>();
    // suite's total statistics
    list.add(suite);
    // chiled's statistics
    list.addAll(suite.getChildren());

    return list;
  }

  public void setValueAt(final Object aValue, final int rowIndex, final int columnIndex) {
    // Setting value is prevented!
    LOG.error("value: " + aValue + " row: " + rowIndex + " column: " + columnIndex);
  }

  @Nullable
  private SMTestProxy getCurrentSuiteFor(@Nullable final SMTestProxy proxy) {
    if (proxy == null) {
      return null;
    }

    // If proxy is suite, returns it
    final SMTestProxy suite;
    if (proxy.isSuite()) {
      suite = proxy;
    }
    else {
      // If proxy is tests returns test's suite
      suite = proxy.getParent();
    }
    return suite;
  }


  protected boolean shouldUpdateModelByTest(final SMTestProxy test) {
    // if some suite in statistics is selected
    // and test is child of current suite
    return isSomeSuiteSelected() && (test.getParent() == myCurrentSuite);
  }

  protected boolean shouldUpdateModelBySuite(final SMTestProxy suite) {
    // If some suite in statistics is selected
    // and suite is current suite in statistics tab or child of current suite
    return isSomeSuiteSelected() && (suite == myCurrentSuite || suite.getParent() == myCurrentSuite);
  }

  private boolean isSomeSuiteSelected() {
    return myCurrentSuite != null;
  }
}