project summaries addition

packages/memory-service/src/db/summaries.js

@@ -50,4 +50,27 @@ function deleteSummary(id) {
     getDB().prepare(`DELETE FROM summaries WHERE id = ?`).run(id);
 }
 
-module.exports = { createSummary, getSummary, getSummariesBySession, getSummariesByProject, updateSummary, deleteSummary };
+// Fetches session summaries that belong to sessions in a given project
+// Joins through sessions table since session summaries don't store project_id directly
+function getSessionSummariesForProject(projectId) {
+    const db = getDB();
+    return db.prepare(`
+        SELECT s.* FROM summaries s
+        JOIN sessions sess ON sess.id = s.session_id
+        WHERE sess.project_id = ? AND s.session_id IS NOT NULL
+        ORDER BY s.created_at ASC
+    `).all(projectId).map(parseRow);
+}
+
+// Fetches the most recent project-level overview summary (session_id IS NULL distinguishes it)
+function getProjectOverviewSummary(projectId) {
+    const db = getDB();
+    const row = db.prepare(`
+        SELECT * FROM summaries
+        WHERE project_id = ? AND session_id IS NULL
+        ORDER BY created_at DESC LIMIT 1
+    `).get(projectId);
+    return row ? parseRow(row) : null;
+}
+
+module.exports = { createSummary, getSummary, getSummariesBySession, getSummariesByProject, updateSummary, deleteSummary, getSessionSummariesForProject, getProjectOverviewSummary };

packages/memory-service/src/index.js

@@ -4,6 +4,7 @@ const {getEnv, PORTS, EPISODIC} = require('@nexusai/shared');
 const { getDB } = require('./db');
 const { createProject, getProjects, getProject, updateProject, deleteProject } = require('./db/projects');
 const { createSummary, getSummary, getSummariesBySession, getSummariesByProject, updateSummary, deleteSummary } = require('./db/summaries');
+const { generateAndStoreProjectSummary } = require('./summarization/project');
 
 const episodic = require('./episodic');
 const semantic = require('./semantic');
@@ -242,6 +243,36 @@ app.get('/projects', (req, res) => {
   res.json(getProjects());
 });
 
+// Generate (or regenerate) a project overview summary on demand
+app.post('/projects/:id/summarize', async (req, res) => {
+    const project = getProject(Number(req.params.id));
+    if (!project) return res.status(404).json({ error: 'Project not found' });
+
+    try {
+        const summary = await generateAndStoreProjectSummary(Number(req.params.id));
+        res.status(201).json(summary);
+    } catch (err) {
+        // Distinguish "no data" from actual errors — both are non-500 from the client's perspective
+        if (err.message.includes('No session summaries')) {
+            return res.status(422).json({ error: err.message });
+        }
+        res.status(500).json({ error: err.message });
+    }
+});
+
+// Get the current project overview summary
+app.get('/projects/:id/overview', async (req, res) => {
+    const { getProjectOverviewSummary } = require('./db/summaries');
+    const summary = getProjectOverviewSummary(Number(req.params.id));
+    // 200 with null is fine — frontend can handle "no overview yet" gracefully
+    res.json(summary ?? null);
+});
+
+// Get summaries for a project
+app.get('/projects/:id/summaries', (req, res) => {
+    res.json(getSummariesByProject(req.params.id));
+});
+
 app.get('/projects/:id', (req, res) => {
   const project = getProject(req.params.id);
   if (!project) return res.status(404).json({ error: 'Not found' });
@@ -262,6 +293,10 @@ app.delete('/projects/:id', (req, res) => {
 });
 
 
+
+
+
+
 /*********************************** */
 /********** Summary Routes ********** */
 /*********************************** */
@@ -285,11 +320,6 @@ app.get('/sessions/:id/summaries', (req, res) => {
     res.json(getSummariesBySession(req.params.id));
 });
 
-// Get summaries for a project
-app.get('/projects/:id/summaries', (req, res) => {
-    res.json(getSummariesByProject(req.params.id));
-});
-
 // Update a summary (for cumulative updates)
 app.patch('/summaries/:id', (req, res) => {
     const summary = getSummary(req.params.id);

packages/memory-service/src/summarization/project.js

@@ -0,0 +1,81 @@
+const { SERVICES, getEnv } = require('@nexusai/shared');
+const { 
+    getSessionSummariesForProject,
+    getProjectOverviewSummary,
+    createSummary,
+    updateSummary,
+
+ } = require('./db/summaries');
+
+const EXTRACTION_URL   = getEnv('EXTRACTION_URL', 'http://localhost:11434');
+const EXTRACTION_MODEL = getEnv('EXTRACTION_MODEL', 'qwen2.5:3b');
+
+const MAX_SUMMARY_CHARS = 8000; // generous ceiling before we truncate input
+
+function buildProjectSummaryPrompt(projectName, sessionSummaries) {
+    let summaryBlock = sessionSummaries
+        .map((s, i) => `Session ${i + 1}:\n${s.content}`)
+        .join('\n\n');
+
+    // Guard against very large inputs — truncate oldest sessions if needed
+    if (summaryBlock.length > MAX_SUMMARY_CHARS) {
+        summaryBlock = summaryBlock.slice(-MAX_SUMMARY_CHARS);
+    }
+
+    return [
+        '<|im_start|>user',
+        `The following are session summaries from a project called "${projectName}".`,
+        'Write a project overview covering: goals, progress, key decisions, and current state.',
+        'Scale the length to the material — use multiple paragraphs for complex projects, a few sentences for simple ones.',
+        'Be comprehensive but avoid padding. Do not repeat the same point twice.',
+        'Write in third person. Output only the overview text, no headings or labels.',
+        '',
+    ].join('\n');
+}
+
+async function generateProjectSummary(projectName, sessionSummaries) {
+    const prompt = buildProjectSummaryPrompt(projectName, sessionSummaries);
+
+    const res = await fetch(`${EXTRACTION_URL}/api/generate`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+            model: EXTRACTION_MODEL,
+            prompt,
+            stream: false,
+            // No format: 'json' — we want free-text narrative, same as session summarization
+            options: { temperature: 0.2, num_predict: 1200 },
+        }),
+    });
+
+    if (!res.ok) throw new Error(`Ollama responded ${res.status}`);
+    const data = await res.json();
+
+    const raw = data.response?.trim() ?? '';
+    return raw
+        .replace(/<\|im_start\|>.*?<\|im_end\|>/gs, '')
+        .replace(/<\|im_start\|>|<\|im_end\|>|<\|im_sep\|>/g, '')
+        .trim();
+}
+
+// Main entry point — called by the route handler
+async function generateAndStoreProjectSummary(projectId) {
+    const project = getProject(projectId);
+    if (!project) throw new Error('Project not found');
+
+    const sessionSummaries = getSessionSummariesForProject(projectId);
+    if (!sessionSummaries.length) throw new Error('No session summaries available to summarize');
+
+    const content = await generateProjectSummary(project.name, sessionSummaries);
+    if (!content) throw new Error('Model returned empty summary');
+
+    // Upsert — replace existing overview if present, otherwise create fresh
+    const existing = getProjectOverviewSummary(projectId);
+    if (existing) {
+        return updateSummary(existing.id, { content, tokenCount: null, episodeRange: null });
+    } else {
+        return createSummary({ projectId, content, sessionId: null });
+    }
+}
+
+module.exports = { generateAndStoreProjectSummary };