From 1c1b7ffe7e2f85cc4ce31170efe8be45fd55ac68 Mon Sep 17 00:00:00 2001
From: db123-ai <erfan+ai@db123.ir>
Date: Wed, 10 Jun 2026 00:49:17 +0330
Subject: [PATCH] feat(memory): add RAG memory store and self-memory system
 (promises, strategies)

---
 internal/memory/self_memory.go | 94 ++++++++++++++++++++++++++++++++++
 internal/memory/store.go       | 71 +++++++++++++++++++++++++
 2 files changed, 165 insertions(+)
 create mode 100644 internal/memory/self_memory.go
 create mode 100644 internal/memory/store.go

diff --git a/internal/memory/self_memory.go b/internal/memory/self_memory.go
new file mode 100644
index 0000000..d2eb3a6
--- /dev/null
+++ b/internal/memory/self_memory.go
@@ -0,0 +1,94 @@
+package memory
+
+import (
+	"time"
+
+	"git.db123.ir/db123/divacode/internal/storage"
+)
+
+type SelfMemory struct {
+	db *storage.DB
+}
+
+type Promise struct {
+	ID        string
+	Promise   string
+	Context   string
+	Fulfilled bool
+	CreatedAt time.Time
+	Deadline  *time.Time
+}
+
+type Strategy struct {
+	ID        string
+	Situation string
+	Strategy  string
+	Outcome   string
+	CreatedAt time.Time
+}
+
+func NewSelfMemory(db *storage.DB) *SelfMemory {
+	return &SelfMemory{db: db}
+}
+
+func (sm *SelfMemory) AddPromise(promise, context string, deadline *time.Time) error {
+	id := time.Now().Format("150405.000")
+	return sm.db.Exec(
+		"INSERT INTO agent_promises (id, promise, context, deadline) VALUES (?, ?, ?, ?)",
+		id, promise, context, deadline,
+	)
+}
+
+func (sm *SelfMemory) FulfillPromise(id string) error {
+	return sm.db.Exec("UPDATE agent_promises SET fulfilled = 1 WHERE id = ?", id)
+}
+
+func (sm *SelfMemory) ActivePromises() ([]Promise, error) {
+	rows, err := sm.db.Query(
+		"SELECT id, promise, context, fulfilled, created_at FROM agent_promises WHERE fulfilled = 0 ORDER BY created_at DESC",
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var promises []Promise
+	for rows.Next() {
+		var p Promise
+		var created string
+		if err := rows.Scan(&p.ID, &p.Promise, &p.Context, &p.Fulfilled, &created); err != nil {
+			continue
+		}
+		promises = append(promises, p)
+	}
+	return promises, nil
+}
+
+func (sm *SelfMemory) AddStrategy(situation, strategy, outcome string) error {
+	id := time.Now().Format("150405.000")
+	return sm.db.Exec(
+		"INSERT INTO agent_strategies (id, situation, strategy, outcome) VALUES (?, ?, ?, ?)",
+		id, situation, strategy, outcome,
+	)
+}
+
+func (sm *SelfMemory) StrategiesByOutcome(outcome string) ([]Strategy, error) {
+	rows, err := sm.db.Query(
+		"SELECT id, situation, strategy, outcome FROM agent_strategies WHERE outcome = ? ORDER BY created_at DESC",
+		outcome,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var strategies []Strategy
+	for rows.Next() {
+		var s Strategy
+		if err := rows.Scan(&s.ID, &s.Situation, &s.Strategy, &s.Outcome); err != nil {
+			continue
+		}
+		strategies = append(strategies, s)
+	}
+	return strategies, nil
+}
diff --git a/internal/memory/store.go b/internal/memory/store.go
new file mode 100644
index 0000000..b01a8d3
--- /dev/null
+++ b/internal/memory/store.go
@@ -0,0 +1,71 @@
+package memory
+
+import (
+	"context"
+	"log/slog"
+	"sync"
+	"time"
+
+	"git.db123.ir/db123/divacode/internal/storage"
+)
+
+type Store struct {
+	mu sync.Mutex
+	db *storage.DB
+}
+
+func NewStore(db *storage.DB) *Store {
+	return &Store{db: db}
+}
+
+func (s *Store) Store(ctx context.Context, content string, source string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	importance := 0.5
+	if len(content) > 100 {
+		importance = 0.7
+	}
+
+	id := time.Now().Format("150405.000000000")
+	return s.db.Exec(
+		"INSERT INTO memories (id, content, importance, source, created_at) VALUES (?, ?, ?, ?, datetime('now'))",
+		id, content, importance, source,
+	)
+}
+
+func (s *Store) Search(ctx context.Context, query string, topK int) ([]string, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	rows, err := s.db.Query(
+		`SELECT content FROM memories
+		 WHERE content LIKE ?
+		 ORDER BY importance DESC, created_at DESC
+		 LIMIT ?`,
+		"%"+query+"%", topK,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var results []string
+	for rows.Next() {
+		var content string
+		if err := rows.Scan(&content); err != nil {
+			continue
+		}
+		results = append(results, content)
+	}
+
+	slog.Debug("memory search", "query", query, "results", len(results))
+	return results, nil
+}
+
+func (s *Store) UpdateImportance(ctx context.Context, id string, importance float64) error {
+	return s.db.Exec(
+		"UPDATE memories SET importance = ?, last_accessed = datetime('now') WHERE id = ?",
+		importance, id,
+	)
+}