feat: implement user linking for members and update database schema for user associations

backend/controllers/memberController.js

@@ -2,6 +2,8 @@ import MemberService from "../services/memberService.js";
 import MemberTransferService from "../services/memberTransferService.js";
 import clickTtPlayerRegistrationService from "../services/clickTtPlayerRegistrationService.js";
 import { emitMemberChanged } from '../services/socketService.js';
+import Member from '../models/Member.js';
+import UserClub from '../models/UserClub.js';
 
 import { devLog } from '../utils/logger.js';
 const getClubMembers = async(req, res) => {
@@ -351,6 +353,28 @@ const transferMembers = async (req, res) => {
     }
 };
 
+const linkMemberUser = async (req, res) => {
+    try {
+        const clubId = Number(req.params.clubId);
+        const memberId = Number(req.params.memberId);
+        const userId = Number(req.body?.userId);
+        if (!clubId || !memberId || !userId) return res.status(400).json({ error: 'Mitglied, Verein und Benutzer sind erforderlich.' });
+        const [member, clubUser, existing] = await Promise.all([
+            Member.findOne({ where: { id: memberId, clubId } }),
+            UserClub.findOne({ where: { clubId, userId, approved: true } }),
+            Member.findOne({ where: { userId } }),
+        ]);
+        if (!member || !clubUser) return res.status(404).json({ error: 'Mitglied oder freigegebener Vereinsbenutzer wurde nicht gefunden.' });
+        if (existing && Number(existing.id) !== memberId) return res.status(409).json({ error: 'Dieses Benutzerkonto ist bereits einem Mitglied zugeordnet.' });
+        await member.update({ userId });
+        emitMemberChanged(clubId);
+        res.json({ memberId, userId });
+    } catch (error) {
+        console.error('[linkMemberUser] - Error:', error);
+        res.status(500).json({ error: 'Mitglied konnte nicht verknüpft werden.' });
+    }
+};
+
 export {
     getClubMembers,
     getWaitingApprovals,
@@ -372,5 +396,6 @@ export {
     requestClickTtPlayerRegistration,
     deleteMemberImage,
     setPrimaryMemberImage,
-    generateMemberGallery
+    generateMemberGallery,
+    linkMemberUser
 };

backend/migrations/20260722_add_member_user_link.sql

@@ -0,0 +1,4 @@
+ALTER TABLE member
+  ADD COLUMN user_id INT NULL,
+  ADD UNIQUE KEY member_user_id_unique (user_id),
+  ADD CONSTRAINT member_user_id_fk FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE SET NULL;

backend/models/Member.js

@@ -123,6 +123,13 @@ const Member = sequelize.define('Member', {
     type: DataTypes.INTEGER,
     allowNull: false,
   },
+  userId: {
+    type: DataTypes.INTEGER,
+    allowNull: true,
+    unique: true,
+    field: 'user_id',
+    comment: 'Linked login account for personal member features',
+  },
   membershipStatus: {
     type: DataTypes.STRING,
     allowNull: false,

backend/models/index.js

@@ -223,6 +223,9 @@ User.hasMany(UserClub, { foreignKey: 'userId' });
 UserClub.belongsTo(Club, { foreignKey: 'clubId', as: 'club' });
 Club.hasMany(UserClub, { foreignKey: 'clubId' });
 
+User.hasOne(Member, { foreignKey: 'userId', as: 'memberProfile' });
+Member.belongsTo(User, { foreignKey: 'userId', as: 'user' });
+
 Group.belongsTo(DiaryDate, { foreignKey: 'diaryDateId', as: 'diaryDateGroup' });
 DiaryDate.hasMany(Group, { foreignKey: 'diaryDateId', as: 'groupsDiaryDate' });
 

backend/routes/memberRoutes.js

@@ -19,7 +19,8 @@ import {
     requestClickTtPlayerRegistration,
     deleteMemberImage,
     setPrimaryMemberImage,
-    generateMemberGallery
+    generateMemberGallery,
+    linkMemberUser
 } from '../controllers/memberController.js';
 import express from 'express';
 import { authenticate } from '../middleware/authMiddleware.js';
@@ -39,6 +40,7 @@ router.post('/image/:clubId/:memberId/:imageId/primary', authenticate, authorize
 router.get('/get/:id/:showAll', authenticate, authorize('members', 'read'), getClubMembers);
 router.get('/gallery/:clubId', authenticate, authorize('members', 'read'), generateMemberGallery);
 router.post('/set/:id', authenticate, authorize('members', 'write'), setClubMembers);
+router.put('/link-user/:clubId/:memberId', authenticate, authorize('members', 'write'), linkMemberUser);
 router.get('/sepa/:clubId/:memberId', authenticate, authorize('members', 'read'), getMemberSepaMandate);
 router.put('/sepa/:clubId/:memberId', authenticate, authorize('members', 'write'), saveMemberSepaMandate);
 router.get('/play-interest/:clubId', authenticate, authorize('members', 'read'), getMemberPlayInterests);