Updated delete_optional to get Option<impl Borrow<Message>>, update get_document to actually check that the document was sent

src/handlers/commands/import.rs

@@ -79,16 +79,7 @@ async fn get_document(
     dialogue: MainDialogue,
     (): (),
 ) -> crate::Result<()> {
-    let document = match msg.document() {
-        Some(doc) => doc,
-        None => {
-            bot.send_message(msg.chat.id, "You didn't send a file")
-                .reply_markup(deletion_markup())
-                .await?;
-            dialogue.exit().await?;
-            return Ok(());
-        }
-    };
+    let document = msg.document().unwrap();
     match document.file_name {
         Some(ref name) if name.trim_end().ends_with(".json") => (),
         _ => {

src/handlers/state/generic.rs

@@ -25,16 +25,17 @@ where
     ) -> PinnedFuture<'a, crate::Result<bool>>,
 {
     let handler = next.lock().await.take();
+    let previous = handler
+        .as_ref()
+        .and_then(|handler| handler.previous.as_ref());
+    delete_optional(&bot, previous).await;
     if text == "/cancel" {
-        let previous = handler.and_then(|handler| handler.previous);
-        delete_optional(&bot, &previous).await;
         bot.send_message(msg.chat.id, "Successfully cancelled")
             .reply_markup(deletion_markup())
             .await?;
         return Ok(());
     }
     let handler = handler.ok_or(HandlerUsed)?;
-    delete_optional(&bot, &handler.previous).await;
     match check(&bot, &msg, &db, &text).await {
         Ok(true) => (),
         Ok(false) => {

src/handlers/state/get_document.rs

@@ -1,6 +1,6 @@
 use crate::{
     errors::HandlerUsed,
-    handlers::{utils::delete_optional, MainDialogue, PackagedHandler},
+    handlers::{markups::deletion_markup, utils::delete_optional, MainDialogue, PackagedHandler},
 };
 use sea_orm::prelude::*;
 use teloxide::{adaptors::Throttle, prelude::*};
@@ -13,7 +13,24 @@ pub async fn get_document(
     dialogue: MainDialogue,
     next: PackagedHandler<()>,
 ) -> crate::Result<()> {
-    let handler = next.lock().await.take().ok_or(HandlerUsed)?;
-    delete_optional(&bot, &handler.previous).await;
+    let handler = next.lock().await.take();
+    let previous = handler
+        .as_ref()
+        .and_then(|handler| handler.previous.as_ref());
+    delete_optional(&bot, previous).await;
+    if let Some("/cancel") = msg.text().map(str::trim_end) {
+        bot.send_message(msg.chat.id, "Successfully cancelled")
+            .reply_markup(deletion_markup())
+            .await?;
+        return Ok(());
+    }
+    let handler = handler.ok_or(HandlerUsed)?;
+    if msg.document().is_none() {
+        bot.send_message(msg.chat.id, "You didn't send a file")
+            .reply_markup(deletion_markup())
+            .await?;
+        dialogue.exit().await?;
+        return Ok(());
+    }
     (handler.handler)(bot, msg, db, dialogue, ()).await
 }

src/handlers/utils.rs

@@ -1,6 +1,6 @@
 use crate::handlers::{Handler, MainDialogue, PackagedHandler};
 use sea_orm::prelude::*;
-use std::{future::Future, sync::Arc};
+use std::{borrow::Borrow, future::Future, sync::Arc};
 use teloxide::{adaptors::Throttle, prelude::*};
 use tokio::sync::Mutex;
 
@@ -29,8 +29,9 @@ pub async fn delete_message(bot: Throttle<Bot>, msg: Message) {
 
 /// Deletes the message if there is one ignoring the errors
 #[inline]
-pub async fn delete_optional(bot: &Throttle<Bot>, msg: &Option<Message>) {
+pub async fn delete_optional(bot: &Throttle<Bot>, msg: Option<impl Borrow<Message>>) {
     if let Some(msg) = msg {
+        let msg: &Message = msg.borrow();
         let _ = bot.delete_message(msg.chat.id, msg.id).await;
     }
 }