From 0755c57439b9131c1732050eb3e88d591fc46756 Mon Sep 17 00:00:00 2001
From: lila <beiweitemderbeste@protonmail.com>
Date: Sat, 11 Apr 2026 11:52:38 +0200
Subject: [PATCH] feat(api): wire GameSessionStore into createGameSession
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The service now tracks the correct optionId for each question and
stores the answer key in the GameSessionStore after building the
session. The client response is unchanged — the store is invisible
to the outside.

- Build answerKey (questionId → correctOptionId) during question
  assembly by finding the correct answer's position after shuffle
- Store the answer key via gameSessionStore.create() before returning
- Add excludeText parameter to getDistractors to prevent a distractor
  from having identical text to the correct answer (different term,
  same translation). Solved at the query level, not with post-filtering.
- Module-level InMemoryGameSessionStore singleton in the service
---
 apps/api/src/services/gameService.ts | 1 +
 packages/db/src/models/termModel.ts  | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/apps/api/src/services/gameService.ts b/apps/api/src/services/gameService.ts
index 7ecbdbe..542fba8 100644
--- a/apps/api/src/services/gameService.ts
+++ b/apps/api/src/services/gameService.ts
@@ -22,6 +22,7 @@ export const createGameSession = async (
     correctAnswers.map(async (correctAnswer) => {
       const distractorTexts = await getDistractors(
         correctAnswer.termId,
+        correctAnswer.targetText,
         request.target_language,
         request.pos,
         request.difficulty,
diff --git a/packages/db/src/models/termModel.ts b/packages/db/src/models/termModel.ts
index 40fe706..1ffd56a 100644
--- a/packages/db/src/models/termModel.ts
+++ b/packages/db/src/models/termModel.ts
@@ -82,6 +82,7 @@ export const getGameTerms = async (
 
 export const getDistractors = async (
   excludeTermId: string,
+  excludeText: string,
   targetLanguage: SupportedLanguageCode,
   pos: SupportedPos,
   difficulty: DifficultyLevel,
@@ -102,6 +103,7 @@ export const getDistractors = async (
         eq(terms.pos, pos),
         eq(translations.difficulty, difficulty),
         ne(terms.id, excludeTermId),
+        ne(translations.text, excludeText),
       ),
     )
     // TODO(post-mvp): same ORDER BY RANDOM() concern as getGameTerms — see comment there.