refactor(backend): add status constants and update code to use them

- Create constants/statuses.js with MATCH_STATUS, SUGGESTION_STATUS
- Update routes/dashboard.js to use MATCH_STATUS
- Update routes/matches.js to use MATCH_STATUS
- Update routes/events.js to use SUGGESTION_STATUS
- Update services/matching.js to use SUGGESTION_STATUS
- Update tests to use constants

backend/src/routes/dashboard.js

@@ -8,6 +8,7 @@ const router = express.Router();
 const { authenticate } = require('../middleware/auth');
 const { PrismaClient } = require('@prisma/client');
 const { getEventsOnlineCounts } = require('../socket');
+const { MATCH_STATUS } = require('../constants');
 
 const prisma = new PrismaClient();
 
@@ -101,7 +102,7 @@ router.get('/', authenticate, async (req, res, next) => {
           { user1Id: userId },
           { user2Id: userId },
         ],
-        status: 'accepted',
+        status: MATCH_STATUS.ACCEPTED,
       },
       include: {
         user1: {
@@ -219,7 +220,7 @@ router.get('/', authenticate, async (req, res, next) => {
     const incomingRequests = await prisma.match.findMany({
       where: {
         user2Id: userId,
-        status: 'pending',
+        status: MATCH_STATUS.PENDING,
       },
       include: {
         user1: {
@@ -298,7 +299,7 @@ router.get('/', authenticate, async (req, res, next) => {
     const outgoingRequests = await prisma.match.findMany({
       where: {
         user1Id: userId,
-        status: 'pending',
+        status: MATCH_STATUS.PENDING,
       },
       include: {
         user2: {

backend/src/routes/events.js

@@ -3,6 +3,7 @@ const { prisma } = require('../utils/db');
 const { authenticate } = require('../middleware/auth');
 const { getIO } = require('../socket');
 const matchingService = require('../services/matching');
+const { SUGGESTION_STATUS } = require('../constants');
 
 const router = express.Router();
 
@@ -1122,8 +1123,8 @@ router.post('/:slug/run-matching', authenticate, async (req, res, next) => {
     const count = await matchingService.saveMatchingResults(event.id, suggestions);
 
     // Get statistics
-    const notFoundCount = suggestions.filter(s => s.status === 'not_found').length;
-    const matchedCount = suggestions.filter(s => s.status === 'pending').length;
+    const notFoundCount = suggestions.filter(s => s.status === SUGGESTION_STATUS.NOT_FOUND).length;
+    const matchedCount = suggestions.filter(s => s.status === SUGGESTION_STATUS.PENDING).length;
 
     res.json({
       success: true,

backend/src/routes/matches.js

@@ -2,6 +2,7 @@ const express = require('express');
 const { prisma } = require('../utils/db');
 const { authenticate } = require('../middleware/auth');
 const { getIO } = require('../socket');
+const { MATCH_STATUS } = require('../constants');
 
 const router = express.Router();
 
@@ -98,7 +99,7 @@ router.post('/', authenticate, async (req, res, next) => {
         user1Id: requesterId,
         user2Id: targetUserId,
         eventId: event.id,
-        status: 'pending',
+        status: MATCH_STATUS.PENDING,
       },
       include: {
         user1: {
@@ -534,7 +535,7 @@ router.put('/:slug/accept', authenticate, async (req, res, next) => {
       const updated = await tx.match.update({
         where: { slug },
         data: {
-          status: 'accepted',
+          status: MATCH_STATUS.ACCEPTED,
           roomId: chatRoom.id,
         },
         include: {
@@ -828,7 +829,7 @@ router.post('/:slug/ratings', authenticate, async (req, res, next) => {
       // Both users have rated - mark match as completed
       await prisma.match.update({
         where: { id: match.id },
-        data: { status: 'completed' },
+        data: { status: MATCH_STATUS.COMPLETED },
       });
     }