abstraction

api/db.go

@@ -0,0 +1,21 @@
+package api
+
+import "errors"
+
+func dbGetUser(id int64) (*User, error) {
+	for _, u := range users {
+		if u.ID == id {
+			return u, nil
+		}
+	}
+	return nil, errors.New("User not found")
+}
+
+func dbGetMessage(id string) (*Message, error) {
+	for _, a := range messages {
+		if a.ID == id {
+			return a, nil
+		}
+	}
+	return nil, errors.New("Message not found")
+}