persistent db

database.py

@@ -0,0 +1,44 @@
+import sqlite3
+import json
+
+class Database:
+    def __init__(self, db_path='conversations.db'):
+        self.db_path = db_path
+        self.conn = sqlite3.connect(self.db_path)
+        self.create_table()
+
+    def create_table(self):
+        with self.conn:
+            self.conn.execute("""
+                CREATE TABLE IF NOT EXISTS conversations (
+                    id TEXT PRIMARY KEY,
+                    history TEXT NOT NULL,
+                    bot_name TEXT NOT NULL,
+                    last_messages TEXT NOT NULL
+                )
+            """)
+
+    def get(self, conversation_id):
+        with self.conn:
+            cursor = self.conn.cursor()
+            cursor.execute("SELECT history, bot_name, last_messages FROM conversations WHERE id = ?", (conversation_id,))
+            row = cursor.fetchone()
+            if row:
+                history = json.loads(row[0])
+                bot_name = row[1]
+                last_messages = json.loads(row[2])
+                return history, bot_name, last_messages
+            return None
+
+    def save(self, conversation_id, history, bot_name, last_messages):
+        with self.conn:
+            self.conn.execute(
+                "INSERT OR REPLACE INTO conversations (id, history, bot_name, last_messages) VALUES (?, ?, ?, ?)",
+                (conversation_id, json.dumps(history), bot_name, json.dumps(last_messages))
+            )
+
+    def delete(self, conversation_id):
+        with self.conn:
+            self.conn.execute("DELETE FROM conversations WHERE id = ?", (conversation_id,))
+
+db = Database()