CREATE memory table for ai conversation

internal/adapters/db/db.go

@@ -1 +1,39 @@
 package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"time"
+	_"embed"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+//go:embed schema.sql
+var schema string
+
+
+func NewDB(ctx context.Context, URI string)(db *sql.DB, err error) {
+
+	params := "cache=shared&_foreign_keys=on&_busy_timeout=3000&_journal_mode=WAL"
+	db, err = sql.Open("sqlite3", fmt.Sprintf("%s?%s", URI, params))
+	if err != nil {
+		return nil, fmt.Errorf("connecting %w", err)
+	}
+	// test conn
+	err = db.PingContext(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("ping Error %w", err)
+	}
+	db.SetConnMaxIdleTime(5*time.Second)
+	CreateTables(db)
+	return db, nil
+}
+
+func CreateTables(db *sql.DB) {
+	_, err := db.Exec(schema)
+	if err != nil {
+		panic(err)
+	}
+}