feat(memberTransferService, trainingStatsService, i18n): enhance member transfer logic and update localization files

- Updated the member transfer service to only load active members with `testMembership = false`, improving data accuracy during transfers.
- Introduced new functions in the training stats service to count missed training weeks, enhancing training participation tracking.
- Expanded localization files for multiple languages, adding new keys and translations for member management features, improving user experience across the application.

backend/services/memberTransferService.js

@@ -7,7 +7,7 @@ import { devLog, infoLog, errorLog } from '../utils/logger.js';
 
 class MemberTransferService {
     /**
-     * Überträgt alle Mitglieder mit testMembership = false an einen externen Endpoint
+     * Überträgt alle aktiven Mitglieder mit testMembership = false an einen externen Endpoint
      * 
      * @param {string} userToken - User Token für Authentifizierung
      * @param {number} clubId - Club ID
@@ -26,10 +26,11 @@ class MemberTransferService {
         try {
             await checkAccess(userToken, clubId);
 
-            // 1. Alle Mitglieder mit testMembership = false laden
+            // 1. Alle aktiven Mitglieder mit testMembership = false laden
             const members = await Member.findAll({
                 where: {
                     clubId: clubId,
+                    active: true,
                     testMembership: false
                 }
             });
@@ -1008,4 +1009,3 @@ class MemberTransferService {
 }
 
 export default new MemberTransferService();
-

backend/services/trainingStatsService.js

@@ -1,6 +1,41 @@
 import { DiaryDate, Member, Participant } from '../models/index.js';
 import { Op } from 'sequelize';
 
+function getIsoWeekKey(dateLike) {
+  const date = new Date(dateLike);
+  if (Number.isNaN(date.getTime())) {
+    return null;
+  }
+
+  const utcDate = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
+  const dayNum = utcDate.getUTCDay() || 7;
+  utcDate.setUTCDate(utcDate.getUTCDate() + 4 - dayNum);
+  const yearStart = new Date(Date.UTC(utcDate.getUTCFullYear(), 0, 1));
+  const weekNum = Math.ceil((((utcDate - yearStart) / 86400000) + 1) / 7);
+  return `${utcDate.getUTCFullYear()}-${String(weekNum).padStart(2, '0')}`;
+}
+
+function countMissedTrainingWeeks(trainingDates, lastTrainingDate) {
+  const lastTrainingTs = lastTrainingDate ? new Date(lastTrainingDate).getTime() : null;
+  const weeks = new Set();
+
+  for (const trainingDate of trainingDates) {
+    const ts = new Date(trainingDate).getTime();
+    if (Number.isNaN(ts)) {
+      continue;
+    }
+    if (lastTrainingTs !== null && ts <= lastTrainingTs) {
+      continue;
+    }
+    const key = getIsoWeekKey(trainingDate);
+    if (key) {
+      weeks.add(key);
+    }
+  }
+
+  return weeks.size;
+}
+
 class TrainingStatsService {
   async getTrainingStats(clubIdRaw) {
     const clubId = parseInt(clubIdRaw, 10);
@@ -33,6 +68,15 @@ class TrainingStatsService {
     });
 
     const stats = [];
+    const trainingDates12Months = await DiaryDate.findAll({
+      where: {
+        clubId,
+        date: { [Op.gte]: twelveMonthsAgo }
+      },
+      attributes: ['date'],
+      order: [['date', 'DESC']]
+    });
+    const trainingDateValues12Months = trainingDates12Months.map(entry => entry.date);
 
     for (const member of members) {
       const participation12Months = await Participant.count({
@@ -89,6 +133,8 @@ class TrainingStatsService {
 
       const lastTrainingDate = trainingDetails.length ? trainingDetails[0].diaryDate.date : null;
       const lastTrainingTs = lastTrainingDate ? new Date(lastTrainingDate).getTime() : 0;
+      const missedTrainingWeeks = countMissedTrainingWeeks(trainingDateValues12Months, lastTrainingDate);
+      const notInTraining = missedTrainingWeeks >= 6;
 
       stats.push({
         id: member.id,
@@ -100,6 +146,8 @@ class TrainingStatsService {
         participationTotal,
         lastTraining: lastTrainingDate,
         lastTrainingTs,
+        missedTrainingWeeks,
+        notInTraining,
         trainingDetails: formattedTrainingDetails
       });
     }