bug fix when multiple memberships & minors

services/members.service.js

@@ -0,0 +1,54 @@
+const Member = require('../model/member.model')
+const Group = require("../model/group.model");
+const User = require("../model/user.model");
+
+const regexp = /^\S*$/;
+
+async function addMember(userId, groupName) {
+    Group.findOne({ where: { name: groupName} }).then((result) => {
+        if (result) {
+            User.findOne({ where: { id: userId } }).then((user) => {
+                if (user) {
+                    Member.findOne({ where: { groupname: result.name, userId: user.id } }).then((member) => {
+                        if (!member) {
+                            Member.create({
+                                userId: user.id,
+                                groupName: result.name
+                            }).then((member) => {
+                                console.log('member added to database' + '(' + member.userId + ',' + member.groupName + ')')
+                            });
+                        }
+                    })
+                }
+
+            })
+        }
+
+    })
+}
+
+async function delMember(userId, groupName) {
+    Group.findOne({ where: { name: groupName} }).then((result) => {
+        if (result) {
+            User.findOne({ where: { id: userId } }).then((user) => {
+                if (user) {
+                    Member.findOne({ where: { groupname: result.name, userId: user.id } }).then((member) => {
+                        if (member) {
+                            member.destroy()
+                                .then(() => {
+                                    console.log('member deleted from database' + '(' + member.userId + ',' + member.groupName + ')')
+                                });
+                        }
+                    })
+                }
+
+            })
+        }
+
+    })
+}
+
+module.exports = {
+    addMember,
+    delMember
+};