Added semantic episode searching

packages/orchestration-service/src/services/embedding.js

@@ -0,0 +1,18 @@
+const {getEnv, SERVICES } = require('@nexusai/shared')
+
+const BASE_URL = getEnv('EMBEDDING_SERVICE_URL', SERVICES.EMBEDDING_URL);
+
+async function embed(text) {
+    const res = await fetch(`${BASE_URL}/embed`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json'},
+        body: JSON.stringify({text}),
+    })
+
+    if (!res.ok) throw new Error(`Embedding service error: ${res.status}`);
+
+    const data = await res.json();
+    return data.embedding;
+}
+
+module.exports = { embed };

packages/orchestration-service/src/services/memory.js

@@ -40,9 +40,17 @@ async function createEpisode(sessionId, userMessage, aiResponse, tokenCount) {
     return res.json();
 }
 
+async function getEpisodeById(episodeId) {
+    const res = await (`${BASE_URL}/episodes/${episodeId}`);
+    if (res.status === 404) return null;
+    if (!res.ok) throw new Error(`Failed to fetch episode: ${res.status}`);
+    return res.json();
+}
+
 module.exports = {
     getSessionByExternalId,
     createSession,
     getRecentEpisodes,
-    createEpisode
+    createEpisode,
+    getEpisodeById
 }

packages/orchestration-service/src/services/qdrant.js

@@ -0,0 +1,27 @@
+const {getEnv, QDRANT, COLLECTIONS } = require('@nexusai/shared')
+
+const BASE_URL = getEnv('QDrant_URL', QDRANT.DEFAULT_URL);
+
+async function searchEpisodes( vector, {limit = 5, scoreThreshold = 0.75, sessionId } = {}) {
+    const body = {vector, limit, score_threshold: scoreThreshold, with_payload: true};
+
+    if (sessionId) {
+        body.filter = { must: [{key: 'sessionId', match: {value: sessionId} }] };
+    }
+
+    const res = await fetch (
+        `${BASE_URL}/collections/${COLLECTIONS.EPISODES}/points/search`,
+        {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'}, 
+            body: JSON.stringify(body)
+        }
+    );
+
+    if (!res.ok) throw new Error(`QDrant error: ${res.status}`);
+
+    const data = await res.json();
+    return data.result;
+}
+
+module.exports = { searchEpisodes };