Add a route to get a single inbox entry

moneymgr_backend/src/extractors/inbox_entry_extractor.rs

@@ -0,0 +1,64 @@
+use crate::extractors::auth_extractor::AuthExtractor;
+use crate::models::inbox::{InboxEntry, InboxEntryID};
+use crate::services::inbox_service;
+use actix_web::dev::Payload;
+use actix_web::{FromRequest, HttpRequest};
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+struct InboxEntryIdInPath {
+    inbox_id: InboxEntryID,
+}
+
+#[derive(thiserror::Error, Debug)]
+enum InboxEntryExtractorError {
+    #[error("Current user does not own the entry!")]
+    UserDoesNotOwnInboxEntry,
+}
+
+pub struct InboxEntryInPath(InboxEntry);
+
+impl InboxEntryInPath {
+    pub async fn load_inbox_entry_from_path(
+        auth: &AuthExtractor,
+        id: InboxEntryID,
+    ) -> anyhow::Result<Self> {
+        let entry = inbox_service::get_by_id(id).await?;
+
+        if entry.user_id() != auth.user_id() {
+            return Err(InboxEntryExtractorError::UserDoesNotOwnInboxEntry.into());
+        }
+
+        Ok(Self(entry))
+    }
+}
+
+impl FromRequest for InboxEntryInPath {
+    type Error = actix_web::Error;
+    type Future = futures_util::future::LocalBoxFuture<'static, Result<Self, Self::Error>>;
+
+    fn from_request(req: &HttpRequest, _payload: &mut Payload) -> Self::Future {
+        let req = req.clone();
+        Box::pin(async move {
+            let auth = AuthExtractor::extract(&req).await?;
+
+            let entry_id =
+                actix_web::web::Path::<InboxEntryIdInPath>::from_request(&req, &mut Payload::None)
+                    .await?
+                    .inbox_id;
+
+            Self::load_inbox_entry_from_path(&auth, entry_id)
+                .await
+                .map_err(|e| {
+                    log::error!("Failed to extract inbox entry ID from URL! {}", e);
+                    actix_web::error::ErrorNotFound("Could not fetch inbox entry information!")
+                })
+        })
+    }
+}
+
+impl AsRef<InboxEntry> for InboxEntryInPath {
+    fn as_ref(&self) -> &InboxEntry {
+        &self.0
+    }
+}

moneymgr_backend/src/extractors/mod.rs

@@ -2,5 +2,6 @@ pub mod account_extractor;
 pub mod auth_extractor;
 pub mod file_extractor;
 pub mod file_id_extractor;
+pub mod inbox_entry_extractor;
 pub mod money_session;
 pub mod movement_extractor;