create create_callback_button function

description: utils.rs will have shortcuts for frequently used code

src/main.rs

@@ -1,6 +1,7 @@
 pub mod admin;
 pub mod db;
 pub mod mongodb_storage;
+pub mod utils;
 
 use db::callback_info::CallbackInfo;
 use log::{info, warn};

src/utils.rs

@@ -0,0 +1,28 @@
+use serde::{Deserialize, Serialize};
+use teloxide::types::InlineKeyboardButton;
+
+use crate::{
+    db::{callback_info::CallbackInfo, CallDB},
+    BotResult,
+};
+
+pub async fn create_callback_button<C, D>(
+    literal: &str,
+    ci: CallbackInfo<C>,
+    db: &mut D,
+) -> BotResult<InlineKeyboardButton>
+where
+    C: Serialize + for<'a> Deserialize<'a> + Send + Sync,
+    D: CallDB + Send,
+{
+    let text = db
+        .get_literal_value(literal)
+        .await?
+        .unwrap_or("Please, set content of this message".into());
+    let ci = ci.store(db).await?;
+
+    Ok(InlineKeyboardButton::new(
+        text,
+        teloxide::types::InlineKeyboardButtonKind::CallbackData(ci.get_id()),
+    ))
+}