/*
* 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 com.jetbrains.edu.learning.builtInServer;
import com.intellij.notification.Notification;
import com.intellij.notification.NotificationType;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.io.BufferExposingByteArrayOutputStream;
import com.intellij.openapi.util.io.StreamUtil;
import com.intellij.openapi.wm.IdeFrame;
import com.intellij.openapi.wm.WindowManager;
import com.intellij.ui.AppIcon;
import com.jetbrains.edu.learning.StudySettings;
import com.jetbrains.edu.learning.stepic.EduStepicAuthorizedClient;
import com.jetbrains.edu.learning.stepic.EduStepicConnector;
import com.jetbrains.edu.learning.stepic.StepicUser;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.*;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.ide.RestService;
import org.jetbrains.io.Responses;
import javax.swing.*;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static com.jetbrains.edu.learning.builtInServer.EduBuiltInServerUtils.*;
import static com.jetbrains.edu.learning.stepic.EduStepicNames.EDU_STEPIK_SERVICE_NAME;
import static com.jetbrains.edu.learning.stepic.EduStepicNames.STEP_ID;
public class EduStepikRestService extends RestService {
private static final Logger LOG = Logger.getInstance(EduStepikRestService.class.getName());
private static final Pattern OPEN_COURSE_PATTERN = Pattern.compile("/" + EDU_STEPIK_SERVICE_NAME + "/course/(\\d+)");
private static final Pattern
OAUTH_CODE_PATTERN = Pattern.compile("/" + RestService.PREFIX + "/" + EDU_STEPIK_SERVICE_NAME + "/oauth" + "\\?code=(\\w+)");
@NotNull
@Override
protected String getServiceName() {
return EDU_STEPIK_SERVICE_NAME;
}
@Override
protected boolean isMethodSupported(@NotNull HttpMethod method) {
return method == HttpMethod.GET;
}
@Override
protected boolean isPrefixlessAllowed() {
return true;
}
@Override
protected boolean isHostTrusted(@NotNull FullHttpRequest request) throws InterruptedException, InvocationTargetException {
String uri = request.uri();
Matcher codeMatcher = OAUTH_CODE_PATTERN.matcher(uri);
if (request.method() == HttpMethod.GET && codeMatcher.matches()) {
return true;
}
return super.isHostTrusted(request);
}
@Nullable
@Override
public String execute(@NotNull QueryStringDecoder urlDecoder, @NotNull FullHttpRequest request, @NotNull ChannelHandlerContext context)
throws IOException {
LOG.info("Request: " + urlDecoder.uri());
String path = urlDecoder.path();
Matcher matcher = OPEN_COURSE_PATTERN.matcher(path);
if (matcher.matches()) {
int courseId = Integer.parseInt(matcher.group(1));
List<String> stepIds = urlDecoder.parameters().get(STEP_ID);
int stepId = 0;
if (stepIds != null && !stepIds.isEmpty()) {
String firstStepId = "";
try {
firstStepId = stepIds.get(0);
stepId = Integer.parseInt(firstStepId);
} catch (NumberFormatException e) {
LOG.warn("Wrong a request parameter: step_id=" + firstStepId, e);
}
}
LOG.info(String.format("Try to open a course: courseId=%s, stepId=%s", courseId, stepId));
if (focusOpenProject(courseId, stepId) || openRecentProject(courseId, stepId) || createProject(courseId, stepId)) {
RestService.sendOk(request, context);
LOG.info("Course opened: " + courseId);
return null;
}
RestService.sendStatus(HttpResponseStatus.NOT_FOUND, false, context.channel());
String message = "A project didn't found or created";
LOG.info(message);
return message;
}
Matcher codeMatcher = OAUTH_CODE_PATTERN.matcher(urlDecoder.uri());
if (codeMatcher.matches()) {
String code = getStringParameter("code", urlDecoder);
if (code != null) {
StepicUser stepicUser = EduStepicAuthorizedClient.login(code, EduStepicConnector.getOAuthRedirectUrl());
if (stepicUser != null) {
StudySettings.getInstance().setUser(stepicUser);
sendHtmlResponse(request, context, "/oauthResponsePages/okPage.html");
showStepicNotification(NotificationType.INFORMATION, "Logged in as " + stepicUser.getFirstName() + " " + stepicUser.getLastName());
focusOnApplicationWindow();
return null;
}
}
sendHtmlResponse(request, context, "/oauthResponsePages/errorPage.html");
showStepicNotification(NotificationType.ERROR, "Failed to log in");
return "Couldn't find code parameter for Stepik OAuth";
}
RestService.sendStatus(HttpResponseStatus.BAD_REQUEST, false, context.channel());
String message = "Unknown command: " + path;
LOG.info(message);
return message;
}
private static void focusOnApplicationWindow() {
JFrame frame = WindowManager.getInstance().findVisibleFrame();
ApplicationManager.getApplication().invokeLater(() -> {
AppIcon.getInstance().requestFocus((IdeFrame)frame);
frame.toFront();
});
}
private void sendHtmlResponse(@NotNull HttpRequest request, @NotNull ChannelHandlerContext context, String pagePath) throws IOException {
BufferExposingByteArrayOutputStream byteOut = new BufferExposingByteArrayOutputStream();
InputStream pageStream = getClass().getResourceAsStream(pagePath);
try {
byteOut.write(StreamUtil.loadFromStream(pageStream));
HttpResponse response = Responses.response("text/html", Unpooled.wrappedBuffer(byteOut.getInternalBuffer(), 0, byteOut.size()));
Responses.addNoCache(response);
response.headers().set("X-Frame-Options", "Deny");
Responses.send(response, context.channel(), request);
}
finally {
byteOut.close();
pageStream.close();
}
}
private static void showStepicNotification(@NotNull NotificationType notificationType, @NotNull String text) {
Notification notification = new Notification("Stepik", "Stepik", text, notificationType);
notification.notify(null);
}
}