feat: aktualisiere SRS-Logik zur Verwendung von konfigurierbaren Zeitfenstern für die Auswahl und Aktualisierung von Elementen

backend/scripts/fix-srs-immediate-due.js

@@ -10,20 +10,25 @@ import { sequelize } from '../utils/sequelize.js';
  */
 
 const DRY_RUN = process.env.DRY_RUN !== 'false';
+const LOOKBACK_DAYS = parseInt(process.env.LOOKBACK_DAYS || '365', 10);
+const WINDOW_SECONDS = parseInt(process.env.WINDOW_SECONDS || '10', 10);
 
 const run = async () => {
   try {
     await sequelize.authenticate();
     console.log('✅ DB connection OK');
 
-    // Conservative selector: items created in the last 3 days where next_due_at is within 2 minutes of created_at
+    // Selector: items created in the last LOOKBACK_DAYS where next_due_at is within WINDOW_SECONDS of created_at
     const selector = `
       SELECT id, item_key, course_id, stage, next_due_at, created_at
       FROM community.vocab_srs_item
-      WHERE created_at >= now() - interval '3 days'
-        AND abs(extract(epoch from (next_due_at - created_at))) < 120
+      WHERE created_at >= now() - interval '${LOOKBACK_DAYS} days'
+        AND (
+          next_due_at = created_at
+          OR abs(extract(epoch from (next_due_at - created_at))) <= ${WINDOW_SECONDS}
+        )
       ORDER BY created_at ASC
-      LIMIT 500
+      LIMIT 1000
     `;
 
     const recent = await sequelize.query(selector, { type: sequelize.QueryTypes.SELECT });
@@ -31,7 +36,7 @@ const run = async () => {
     console.table(recent.slice(0, 20));
 
     if (recent.length === 0) {
-      console.log('\nNo candidate rows found — nothing to do.');
+      console.log(`\nNo candidate rows found for lookback ${LOOKBACK_DAYS} days and window ${WINDOW_SECONDS}s — nothing to do.`);
       return;
     }
 
@@ -40,8 +45,11 @@ const run = async () => {
     const updateQuery = `
       UPDATE community.vocab_srs_item
       SET next_due_at = date_trunc('day', created_at + interval '1 day') + interval '8 hours'
-      WHERE created_at >= now() - interval '3 days'
-        AND abs(extract(epoch from (next_due_at - created_at))) < 120
+      WHERE created_at >= now() - interval '${LOOKBACK_DAYS} days'
+        AND (
+          next_due_at = created_at
+          OR abs(extract(epoch from (next_due_at - created_at))) <= ${WINDOW_SECONDS}
+        )
       RETURNING id, item_key, course_id, stage, next_due_at, created_at;
     `;