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TellmarchTellmarch
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Add servlet for ProblemsService
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‎playshogi-website/playshogi-website-server/src/main/java/com/playshogi/website/gwt/server/servlets/ProblemsServiceServlet.java‎

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package com.playshogi.website.gwt.server.servlets;
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import com.google.gson.Gson;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParser;
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import com.playshogi.website.gwt.server.services.ProblemsServiceImpl;
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import com.playshogi.website.gwt.shared.models.ProblemCollectionDetails;
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import com.playshogi.website.gwt.shared.models.ProblemOptions;
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import com.playshogi.website.gwt.shared.models.RaceDetails;
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import com.playshogi.website.gwt.shared.services.ProblemsService;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.io.Reader;
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public class ProblemsServiceServlet extends HttpServlet {
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private final ProblemsService problemsService = new ProblemsServiceImpl();
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private final Gson gson = new Gson();
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@Override
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protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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resp.setContentType("application/json; charset=UTF-8");
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try (Reader reader = req.getReader()) {
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JsonObject json = JsonParser.parseReader(reader).getAsJsonObject();
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String action = json.get("action").getAsString();
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Object result;
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switch (action) {
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// --- Problem Fetching ---
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case "getProblem":
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if (json.has("options")) {
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result = problemsService.getProblem(gson.fromJson(json.get("options"), ProblemOptions.class));
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} else {
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result = problemsService.getProblem(json.get("problemId").getAsString());
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}
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break;
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case "getRandomProblem":
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if (json.has("numMoves")) {
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result = problemsService.getRandomProblem(json.get("numMoves").getAsInt());
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} else {
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result = problemsService.getRandomProblem();
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}
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break;
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// --- Stats & High Scores ---
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case "saveUserProblemAttempt":
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problemsService.saveUserProblemAttempt(
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json.get("sessionId").getAsString(),
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json.get("problemId").getAsString(),
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json.get("success").getAsBoolean(),
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json.get("timeMs").getAsInt()
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);
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result = "OK";
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break;
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case "saveHighScore":
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problemsService.saveHighScore(
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json.get("userName").getAsString(),
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json.get("score").getAsInt()
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);
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result = "OK";
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break;
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case "getHighScores":
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result = problemsService.getHighScores();
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break;
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case "saveCollectionTime":
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problemsService.saveCollectionTime(
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json.get("sessionId").getAsString(),
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json.get("collectionId").getAsString(),
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json.get("timeMs").getAsInt(),
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json.get("complete").getAsBoolean(),
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json.get("solved").getAsInt()
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);
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result = "OK";
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break;
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case "getProblemStatisticsDetails":
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result = problemsService.getProblemStatisticsDetails(json.get("sessionId").getAsString());
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break;
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// --- Collection Management ---
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case "saveProblemsCollection":
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result = problemsService.saveProblemsCollection(
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json.get("sessionId").getAsString(),
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json.get("draftId").getAsString(),
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gson.fromJson(json.get("details"), ProblemCollectionDetails.class)
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);
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break;
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case "addDraftToProblemCollection":
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problemsService.addDraftToProblemCollection(
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json.get("sessionId").getAsString(),
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json.get("draftId").getAsString(),
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json.get("collectionId").getAsString()
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);
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result = "OK";
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break;
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case "getAllProblemCollections":
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result = problemsService.getAllProblemCollections(json.get("sessionId").getAsString());
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break;
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case "getPublicProblemCollections":
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result = problemsService.getPublicProblemCollections(json.get("sessionId").getAsString());
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break;
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case "getUserProblemCollections":
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result = problemsService.getUserProblemCollections(
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json.get("sessionId").getAsString(),
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json.get("userName").getAsString()
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);
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break;
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case "getProblemCollection":
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result = problemsService.getProblemCollection(
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json.get("sessionId").getAsString(),
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json.get("collectionId").getAsString(),
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json.get("includeHiddenProblems").getAsBoolean()
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);
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break;
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case "getLearnFromMistakeProblemCollection":
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result = problemsService.getLearnFromMistakeProblemCollection(
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json.get("sessionId").getAsString(),
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json.get("gameCollectionId").getAsString()
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);
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break;
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case "deleteProblemCollection":
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problemsService.deleteProblemCollection(
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json.get("sessionId").getAsString(),
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json.get("problemSetId").getAsString(),
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json.get("alsoDeleteKifus").getAsBoolean()
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);
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result = "OK";
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break;
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case "updateProblemCollectionDetails":
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problemsService.updateProblemCollectionDetails(
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json.get("sessionId").getAsString(),
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gson.fromJson(json.get("problemCollectionDetails"), ProblemCollectionDetails.class)
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);
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result = "OK";
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break;
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case "updateProblemCollectionDetailsAdmin":
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problemsService.updateProblemCollectionDetailsAdmin(
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json.get("sessionId").getAsString(),
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gson.fromJson(json.get("problemCollectionDetails"), ProblemCollectionDetails.class)
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);
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result = "OK";
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break;
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case "createProblemCollection":
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problemsService.createProblemCollection(
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json.get("sessionId").getAsString(),
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gson.fromJson(json.get("details"), ProblemCollectionDetails.class)
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);
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result = "OK";
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break;
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case "saveProblemAndAddToCollection":
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problemsService.saveProblemAndAddToCollection(
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json.get("sessionId").getAsString(),
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json.get("usf").getAsString(),
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json.get("collectionId").getAsString()
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);
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result = "OK";
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break;
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case "removeProblemFromCollection":
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problemsService.removeProblemFromCollection(
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json.get("sessionId").getAsString(),
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json.get("problemId").getAsString(),
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json.get("collectionId").getAsString()
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);
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result = "OK";
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break;
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case "addExistingKifuToProblemCollection":
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problemsService.addExistingKifuToProblemCollection(
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json.get("sessionId").getAsString(),
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json.get("kifuId").getAsString(),
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json.get("collectionId").getAsString()
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);
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result = "OK";
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break;
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case "swapProblemsInCollection":
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problemsService.swapProblemsInCollection(
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json.get("sessionId").getAsString(),
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json.get("collectionId").getAsString(),
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json.get("firstProblemId").getAsString(),
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json.get("secondProblemId").getAsString()
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);
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result = "OK";
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break;
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// --- Logic / Admin Tasks ---
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case "convertGameCollection":
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problemsService.convertGameCollection(
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json.get("sessionId").getAsString(),
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json.get("gameCollectionId").getAsString()
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);
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result = "OK";
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break;
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case "createCollectionsByDifficulty":
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problemsService.createCollectionsByDifficulty(json.get("sessionId").getAsString());
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result = "OK";
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break;
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// --- Race System ---
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case "createRace":
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result = problemsService.createRace(
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json.get("sessionId").getAsString(),
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json.get("collectionId").getAsString(),
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RaceDetails.RaceType.valueOf(json.get("raceType").getAsString())
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);
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break;
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case "getRaceDetails":
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result = problemsService.getRaceDetails(
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json.get("sessionId").getAsString(),
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json.get("raceId").getAsString()
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);
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break;
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case "waitForRaceUpdate":
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result = problemsService.waitForRaceUpdate(
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json.get("sessionId").getAsString(),
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json.get("raceId").getAsString()
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);
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break;
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case "joinRace":
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problemsService.joinRace(json.get("sessionId").getAsString(), json.get("raceId").getAsString());
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result = "OK";
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break;
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case "withdrawFromRace":
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problemsService.withdrawFromRace(json.get("sessionId").getAsString(),
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json.get("raceId").getAsString());
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result = "OK";
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break;
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case "startRace":
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problemsService.startRace(json.get("sessionId").getAsString(), json.get("raceId").getAsString());
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result = "OK";
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break;
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case "reportUserProgressInRace":
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problemsService.reportUserProgressInRace(
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json.get("sessionId").getAsString(),
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json.get("raceId").getAsString(),
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json.get("problemId").getAsString(),
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RaceDetails.ProblemStatus.valueOf(json.get("status").getAsString())
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);
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result = "OK";
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break;
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case "reportBadProblem":
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problemsService.reportBadProblem(
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json.get("sessionId").getAsString(),
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json.get("kifuId").getAsString(),
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json.get("problemId").getAsString(),
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json.get("collectionId").getAsString(),
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json.get("reason").getAsString(),
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json.get("comment").getAsString()
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);
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result = "OK";
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break;
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default:
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resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
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gson.toJson("Unknown action: " + action, resp.getWriter());
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return;
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}
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// Write successful result (or empty if void)
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gson.toJson(result, resp.getWriter());
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} catch (Exception e) {
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resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
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JsonObject error = new JsonObject();
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error.addProperty("error", e.getMessage());
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gson.toJson(error, resp.getWriter());
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}
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}
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}

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