update eslint and refactor backend

src/index.ts

@@ -2,31 +2,66 @@ import { serve } from 'bun';
 import index from './index.html';
 import DB from './server/db';
 
+const db = new DB();
+
 const server = serve({
     routes: {
     // Serve index.html for all unmatched routes.
         '/*': index,
 
-        '/api/group/:id': async req => {
-            const id = req.params.id;
-            const group = await new DB().getGroup(id);
-            console.log('Fetching group with ID:', id, 'Result:', group);
-            if (!group) return new Response(JSON.stringify({ error: 'Not found' }), { status: 404 });
+        '/api/user/:mail': async req => {
+            const mail = req.params.mail;
+            console.log('Received request for user:', mail);
+            const user = await db.getUserByMail(mail);
+            console.log('Fetching user with mail:', mail, 'Result:', user);
+            if (!user) return new Response(JSON.stringify({ error: 'User not found' }), { status: 404 });
+            return new Response(JSON.stringify(user), { headers: { 'Content-Type': 'application/json' } });
+        },
+
+        '/api/user': {
+            async POST(req) {
+                try {
+                    const { mail } = await req.json() as { mail: string };
+                    console.log('Received request to create user with mail:', mail);
+                    const user = await db.createUser(mail);
+                    return new Response(JSON.stringify(user), { headers: { 'Content-Type': 'application/json' } });
+                } catch (err) {
+                    console.error('Error creating user:', err);
+                    return new Response(JSON.stringify({ error: 'Failed to create user' }), { status: 500 });
+                }
+            },
+        },
+
+        '/api/group/:code': async req => {
+            const code = req.params.code;
+            console.log('Received request for group:', code);
+            const group = await db.getGroupByCode(code);
+            console.log('Fetching group with ID:', code, 'Result:', group);
+            if (!group) return new Response(JSON.stringify({ error: 'Group not found' }), { status: 404 });
             return new Response(JSON.stringify(group), { headers: { 'Content-Type': 'application/json' } });
         },
 
         '/api/group': {
             async POST(req) {
                 try {
-                    const group = (await req.formData() as FormData).get('code') as string;
-                    const response = await new DB().createGroup(group);
+                    const { name, mail } = await req.json() as { name: string; mail: string };
+                    console.log('Received request to create group with name:', name, 'and mail:', mail);
+                    const response = db.createGroup({ name, mail });
                     return new Response(JSON.stringify(response), { headers: { 'Content-Type': 'application/json' } });
                 } catch (err) {
                     console.error('Error creating group:', err);
                     return new Response(JSON.stringify({ error: 'Failed to create group' }), { status: 500 });
                 }
             }
-        }
+        },
+
+        '/api/group_members/:groupId': async req => {
+            const groupId = parseInt(req.params.groupId, 10);
+            console.log('Received request for group members of group ID:', groupId);
+            const members = await db.getGroupMembers(groupId);
+            console.log('Fetching members for group ID:', groupId, 'Result:', members);
+            return new Response(JSON.stringify(members), { headers: { 'Content-Type': 'application/json' } });
+        },
     },
 
     development: process.env.NODE_ENV !== 'production' && {