/*
 * 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.run;

import com.google.common.collect.Lists;
import com.intellij.execution.*;
import com.intellij.execution.configurations.GeneralCommandLine;
import com.intellij.execution.configurations.ParametersList;
import com.intellij.execution.configurations.ParamsGroup;
import com.intellij.execution.executors.DefaultDebugExecutor;
import com.intellij.execution.process.CommandLineArgumentsProvider;
import com.intellij.execution.process.OSProcessHandler;
import com.intellij.execution.process.ProcessHandler;
import com.intellij.execution.runners.ExecutionEnvironment;
import com.intellij.execution.ui.RunContentDescriptor;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.progress.ProgressManager;
import com.intellij.openapi.progress.Task;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.projectRoots.Sdk;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.util.ArrayUtil;
import com.intellij.util.ui.UIUtil;
import com.jetbrains.python.PythonHelpersLocator;
import com.jetbrains.python.console.PyConsoleType;
import com.jetbrains.python.console.PydevConsoleRunner;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

/**
 * @author yole
 */
public class PythonScriptCommandLineState extends PythonCommandLineState {
  private final PythonRunConfiguration myConfig;

  public PythonScriptCommandLineState(PythonRunConfiguration runConfiguration, ExecutionEnvironment env) {
    super(runConfiguration, env);
    myConfig = runConfiguration;
  }

  @NotNull
  @Override
  public ExecutionResult execute(Executor executor, final CommandLinePatcher... patchers) throws ExecutionException {
    if (myConfig.showCommandLineAfterwards()) {
      if (executor.getId() == DefaultDebugExecutor.EXECUTOR_ID) {
        return super.execute(executor, ArrayUtil.append(patchers, new CommandLinePatcher() {
          @Override
          public void patchCommandLine(GeneralCommandLine commandLine) {
            commandLine.getParametersList().getParamsGroup(PythonCommandLineState.GROUP_DEBUGGER).addParameterAt(1, "--cmd-line");
          }
        }));
      }

      PydevConsoleRunner runner =
        new PythonScriptWithConsoleRunner(myConfig.getProject(), myConfig.getSdk(), PyConsoleType.PYTHON, myConfig.getWorkingDirectory(),
                                          myConfig.getEnvs(), patchers);

      runner.runSync();

      List<AnAction> actions = Lists.newArrayList(createActions(runner.getConsoleView(), runner.getProcessHandler()));

      return new DefaultExecutionResult(runner.getConsoleView(), runner.getProcessHandler(), actions.toArray(new AnAction[actions.size()]));
    }
    else {
      return super.execute(executor, patchers);
    }
  }

  @Override
  protected void buildCommandLineParameters(GeneralCommandLine commandLine) {
    ParametersList parametersList = commandLine.getParametersList();
    ParamsGroup exe_options = parametersList.getParamsGroup(GROUP_EXE_OPTIONS);
    assert exe_options != null;
    exe_options.addParametersString(myConfig.getInterpreterOptions());

    ParamsGroup script_parameters = parametersList.getParamsGroup(GROUP_SCRIPT);
    assert script_parameters != null;
    if (!StringUtil.isEmptyOrSpaces(myConfig.getScriptName())) {
      script_parameters.addParameter(myConfig.getScriptName());
    }

    final String script_options_string = myConfig.getScriptParameters();
    if (script_options_string != null) script_parameters.addParametersString(script_options_string);

    if (!StringUtil.isEmptyOrSpaces(myConfig.getWorkingDirectory())) {
      commandLine.setWorkDirectory(myConfig.getWorkingDirectory());
    }
  }

  /**
   * @author traff
   */
  public class PythonScriptWithConsoleRunner extends PydevConsoleRunner {

    private CommandLinePatcher[] myPatchers;

    public PythonScriptWithConsoleRunner(@NotNull Project project,
                                         @NotNull Sdk sdk,
                                         @NotNull PyConsoleType consoleType,
                                         @Nullable String workingDir,
                                         Map<String, String> environmentVariables,
                                         CommandLinePatcher[] patchers,
                                         String... statementsToExecute) {
      super(project, sdk, consoleType, workingDir, environmentVariables, statementsToExecute);
      myPatchers = patchers;
    }

    @Override
    protected void createContentDescriptorAndActions() {
      AnAction a = createConsoleExecAction(myConsoleExecuteActionHandler);
      registerActionShortcuts(Lists.newArrayList(a), getConsoleView().getConsole().getConsoleEditor().getComponent());
    }

    @Override
    protected CommandLineArgumentsProvider createCommandLineArgumentsProvider(final Sdk sdk,
                                                                              final Map<String, String> environmentVariables,
                                                                              int[] ports) {
      final ArrayList<String> args = new ArrayList<String>();
      args.add(sdk.getHomePath());
      final String versionString = sdk.getVersionString();
      if (versionString == null || !versionString.toLowerCase().contains("jython")) {
        args.add("-u");
      }
      args.add(FileUtil.toSystemDependentName(PythonHelpersLocator.getHelperPath("pydev/pydev_run_in_console.py")));
      for (int port : ports) {
        args.add(String.valueOf(port));
      }

      try {
        final GeneralCommandLine cmd = generateCommandLine(myPatchers);
        args.addAll(cmd.getParametersList().getList());

        return new CommandLineArgumentsProvider() {
          @Override
          public String[] getArguments() {
            return ArrayUtil.toStringArray(args);
          }

          @Override
          public boolean passParentEnvs() {
            return false;
          }

          @Override
          public Map<String, String> getAdditionalEnvs() {
            Map<String, String> map = addDefaultEnvironments(sdk, environmentVariables);
            map.putAll(cmd.getEnvironment());
            return map;
          }
        };
      }
      catch (Exception e) {
        throw new IllegalStateException(e);
      }
    }
  }
}