/*
 * 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.jetbrains.python.testing;

import com.google.common.collect.Lists;
import com.intellij.execution.DefaultExecutionResult;
import com.intellij.execution.ExecutionException;
import com.intellij.execution.ExecutionResult;
import com.intellij.execution.Executor;
import com.intellij.execution.configurations.GeneralCommandLine;
import com.intellij.execution.configurations.ParamsGroup;
import com.intellij.execution.process.ProcessHandler;
import com.intellij.execution.runners.ExecutionEnvironment;
import com.intellij.execution.testframework.TestFrameworkRunningModel;
import com.intellij.execution.testframework.autotest.ToggleAutoTestAction;
import com.intellij.execution.testframework.sm.SMTestRunnerConnectionUtil;
import com.intellij.execution.testframework.sm.runner.ui.SMTRunnerConsoleView;
import com.intellij.execution.testframework.ui.BaseTestsOutputConsoleView;
import com.intellij.execution.ui.ConsoleView;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Getter;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import com.jetbrains.python.PythonHelpersLocator;
import com.jetbrains.python.console.PythonDebugLanguageConsoleView;
import com.jetbrains.python.run.AbstractPythonRunConfiguration;
import com.jetbrains.python.run.CommandLinePatcher;
import com.jetbrains.python.run.PythonCommandLineState;
import com.jetbrains.python.sdk.PythonSdkType;
import org.jetbrains.annotations.NotNull;

import java.io.File;
import java.util.List;
import java.util.Map;

/**
 * @author yole
 */
public abstract class PythonTestCommandLineStateBase extends PythonCommandLineState {
  protected final AbstractPythonRunConfiguration myConfiguration;

  public AbstractPythonRunConfiguration getConfiguration() {
    return myConfiguration;
  }

  public PythonTestCommandLineStateBase(AbstractPythonRunConfiguration configuration, ExecutionEnvironment env) {
    super(configuration, env);
    myConfiguration = configuration;
  }

  @NotNull
  protected ConsoleView createAndAttachConsole(Project project, ProcessHandler processHandler, Executor executor)
    throws ExecutionException {

    final PythonTRunnerConsoleProperties consoleProperties = createConsoleProperties(executor);

    if (isDebug()) {
      final ConsoleView testsOutputConsoleView = SMTestRunnerConnectionUtil.createConsole(PythonTRunnerConsoleProperties.FRAMEWORK_NAME,
                                                                                      consoleProperties,
                                                                                      getEnvironment());
      final ConsoleView consoleView = new PythonDebugLanguageConsoleView(project, PythonSdkType.findSdkByPath(myConfiguration.getInterpreterPath()), testsOutputConsoleView);
      consoleView.attachToProcess(processHandler);
      return consoleView;
    }
    final ConsoleView consoleView = SMTestRunnerConnectionUtil.createAndAttachConsole(PythonTRunnerConsoleProperties.FRAMEWORK_NAME,
                                                                                      processHandler,
                                                                                      consoleProperties,
                                                                                      getEnvironment());
    addTracebackFilter(project, consoleView, processHandler);
    return consoleView;
  }

  protected PythonTRunnerConsoleProperties createConsoleProperties(Executor executor) {
    return new PythonTRunnerConsoleProperties(myConfiguration, executor, false);
  }

  public GeneralCommandLine generateCommandLine() throws ExecutionException {
    GeneralCommandLine cmd = super.generateCommandLine();

    setWorkingDirectory(cmd);

    ParamsGroup exe_options = cmd.getParametersList().getParamsGroup(GROUP_EXE_OPTIONS);
    assert exe_options != null;
    exe_options.addParametersString(myConfiguration.getInterpreterOptions());
    addTestRunnerParameters(cmd);

    return cmd;
  }

  protected void setWorkingDirectory(@NotNull final GeneralCommandLine cmd) {
    final String workingDirectory = myConfiguration.getWorkingDirectory();
    if (!StringUtil.isEmptyOrSpaces(workingDirectory)) {
      cmd.setWorkDirectory(workingDirectory);
    }
    else if (myConfiguration instanceof AbstractPythonTestRunConfiguration) {
      final String folderName = ((AbstractPythonTestRunConfiguration)myConfiguration).getFolderName();
      if (!StringUtil.isEmptyOrSpaces(folderName)) {
        cmd.setWorkDirectory(folderName);
      }
      else {
        final String scriptName = ((AbstractPythonTestRunConfiguration)myConfiguration).getScriptName();
        if (StringUtil.isEmptyOrSpaces(scriptName)) return;
        final VirtualFile script = LocalFileSystem.getInstance().findFileByPath(scriptName);
        if (script == null) return;
        cmd.setWorkDirectory(script.getParent().getPath());
      }
    }
  }

  @Override
  public ExecutionResult execute(Executor executor, CommandLinePatcher... patchers) throws ExecutionException {
    final ProcessHandler processHandler = startProcess(patchers);
    final ConsoleView console = createAndAttachConsole(myConfiguration.getProject(), processHandler, executor);

    List<AnAction> actions = Lists
      .newArrayList(createActions(console, processHandler));

    DefaultExecutionResult executionResult =
      new DefaultExecutionResult(console, processHandler, actions.toArray(new AnAction[actions.size()]));

    PyRerunFailedTestsAction rerunFailedTestsAction = new PyRerunFailedTestsAction(console);
    if (console instanceof SMTRunnerConsoleView) {
      rerunFailedTestsAction.init(((BaseTestsOutputConsoleView)console).getProperties(), getEnvironment());
      rerunFailedTestsAction.setModelProvider(new Getter<TestFrameworkRunningModel>() {
      @Override
      public TestFrameworkRunningModel get() {
        return ((SMTRunnerConsoleView)console).getResultsViewer();
      }
    });
    }

    executionResult.setRestartActions(rerunFailedTestsAction, new ToggleAutoTestAction(getEnvironment()));
    return executionResult;
  }

  protected void addBeforeParameters(GeneralCommandLine cmd) throws ExecutionException {}
  protected void addAfterParameters(GeneralCommandLine cmd) throws ExecutionException {}

  protected void addTestRunnerParameters(GeneralCommandLine cmd) throws ExecutionException {
    ParamsGroup script_params = cmd.getParametersList().getParamsGroup(GROUP_SCRIPT);
    assert script_params != null;
    script_params.addParameter(new File(PythonHelpersLocator.getHelpersRoot(), getRunner()).getAbsolutePath());
    addBeforeParameters(cmd);
    script_params.addParameters(getTestSpecs());
    addAfterParameters(cmd);
  }

  @Override
  public void addPredefinedEnvironmentVariables(Map<String, String> envs, boolean passParentEnvs) {
    super.addPredefinedEnvironmentVariables(envs, passParentEnvs);
    envs.put("PYCHARM_HELPERS_DIR", PythonHelpersLocator.getHelperPath("pycharm"));
  }

  protected abstract String getRunner();
  protected abstract List<String> getTestSpecs();
}