minor constants refactoring

packages/memory-service/src/episodic/index.js

@@ -1,4 +1,5 @@
 const {getDB} = require('../db');
+const { EPISODIC } = require('@nexusai/shared');
 
 // --Sessions --------------------------------------------------
 
@@ -73,7 +74,7 @@ function getEpisode(id) {
 }
 
 // Retrieves episodes for a given session, ordered by creation time descending, with pagination
-function getEpisodesBySession(sessionId, limit = 20, offset = 0) {
+function getEpisodesBySession(sessionId, limit = EPISODIC.DEFAULT_PAGE_SIZE, offset = 0) {
   const db = getDB();
   const stmt = db.prepare(`
     SELECT * FROM episodes
@@ -85,7 +86,7 @@ function getEpisodesBySession(sessionId, limit = 20, offset = 0) {
 }
 
 // Retrieves recent episodes across all sessions, ordered by creation time descending, with a limit
-function getRecentEpisodes(limit = 10) {
+function getRecentEpisodes(limit = EPISODIC.DEFAULT_RECENT_LIMIT) {
   // Cross-session recent episodes — useful for recency-based retrieval
   const db = getDB();
   const stmt = db.prepare(`
@@ -98,7 +99,7 @@ function getRecentEpisodes(limit = 10) {
 
 
 // Searches episodes using FTS5 full-text search, ordered by relevance, with a limit
-function searchEpisodes(query, limit = 10) {
+function searchEpisodes(query, limit = EPISODIC.DEFAULT_SEARCH_LIMIT) {
   // FTS5 full-text search across all episodes
   const db = getDB();
   const stmt = db.prepare(`

packages/memory-service/src/semantic/index.js

@@ -1,27 +1,17 @@
 const {QdrantClient} = require('@qdrant/js-client-rest');
-const {getEnv} = require('@nexusai/shared');
+const {QDRANT, COLLECTIONS, getEnv} = require('@nexusai/shared');
 
 let client;
 
 // ********** QDrant Client **********
 function getClient(){
     if(!client){
-        const url = getEnv('QDrant_URL', 'http://localhost:6333');
+        client = new QdrantClient({url: getEnv('QDRANT_URL', QDRANT.DEFAULT_URL)});
-        client = new QdrantClient({url});
     }
     return client;
 }
 
 // ********** Collections **********
-const COLLECTIONS = {
-    EPISODES: 'episodes',
-    ENTITIES: 'entities',
-    SUMMARIES: 'summaries'
-};
-
-// Vectoir size much match the embedding model output dimension
-// nomic-embed-text outputs 768 dimensions
-const VECTOR_SIZE = 768;
 
 async function initCollections() {
   const client = getClient();
@@ -29,9 +19,9 @@ async function initCollections() {
     const exists = await collectionExists(name);
     if (!exists) {
       await client.createCollection(name, {
-        vectors: {
+        vectors: {          
-          size: VECTOR_SIZE,
+            size: QDRANT.VECTOR_SIZE,
-          distance: 'Cosine'  // Cosine similarity — best for text embeddings
+            distance: QDRANT.DISTANCE_METRIC
         }
       });
       console.log(`Created Qdrant collection: ${name}`);
@@ -77,7 +67,7 @@ async function upsertSummary(id, vector, payload={}) {
 }
 
 //********** Search Vectors ********** */
-async function searchCollection(collection, vector, limit = 10, filter = null){
+async function searchCollection(collection, vector, limit = QDRANT.DEFAULT_LIMIT, filter = null){
     const client = getClient();
     const params = {vector,limit, with_payload: true};
 
@@ -85,13 +75,13 @@ async function searchCollection(collection, vector, limit = 10, filter = null){
 
     return client.search(collection, params);
 }
-async function searchEpisodes(vector, limit = 10, filter = null) {
+async function searchEpisodes(vector, limit = QDRANT.DEFAULT_LIMIT, filter = null) {
     return searchCollection(COLLECTIONS.EPISODES, vector, limit, filter);
 }
-async function searchEntities(vector, limit = 10, filter = null) {
+async function searchEntities(vector, limit = QDRANT.DEFAULT_LIMIT, filter = null) {
     return searchCollection(COLLECTIONS.ENTITIES, vector, limit, filter);
 }
-async function searchSummaries(vector, limit = 10, filter = null) {
+async function searchSummaries(vector, limit = QDRANT.DEFAULT_LIMIT, filter = null) {
     return searchCollection(COLLECTIONS.SUMMARIES, vector, limit, filter);
 }
 
@@ -106,7 +96,6 @@ async function deleteVector(collection, id) {
 }
 
 module.exports = {
-    COLLECTIONS,
     initCollections,
     upsertEpisode,
     upsertEntity,

packages/shared/src/config/constants.js

@@ -0,0 +1,26 @@
+//A store for tunables and constants used across the codebase, to avoid magic numbers and hardcoded values
+
+const QDRANT = {
+    DEFAULT_URL:        'http://localhost:6333',
+    VECTOR_SIZE:        768,            // Must match the output dimension of the embedding model (e.g. nomic-embed-text)
+    DISTANCE_METRIC:    'Cosine',       // Best for normalized embeddings like text vectors
+    DEFAULT_LIMIT:       10,            //Default top-=k for vector searches
+};
+
+const COLLECTIONS = {
+    EPISODES: 'episodes',
+    ENTITIES: 'entities',
+    SUMMARIES: 'summaries'
+};
+
+const EPISODIC = {
+    DEFAULT_RECENT_LIMIT:   10,   // Default number of recent episodes to retrieve
+    DEFAULT_PAGE_SIZE:      20,   // Default number of episodes per page for pagination
+    DEFAULT_SEARCH_LIMIT:   10,   // Default number of search results to return
+};
+
+module.exports = {
+    QDRANT,
+    COLLECTIONS,
+    EPISODIC
+};

packages/shared/src/index.js

@@ -1,3 +1,4 @@
 const {getEnv} = require('./config/env');
+const {QDRANT, COLLECTIONS, EPISODIC } = require('./config/constants');
 
-module.exports = {getEnv};
+module.exports = {getEnv, QDRANT, COLLECTIONS, EPISODIC};