refactor: clippy suggestions

src/conn.rs

@@ -156,7 +156,7 @@ impl ClientConn {
         self.auth = Challenge(Uuid::new_v4().to_string());
     }
 
-    pub fn authenticate(&mut self, event: &Event, relay_url: &String) -> Result<()> {
+    pub fn authenticate(&mut self, event: &Event, relay_url: &str) -> Result<()> {
         match &self.auth {
             Challenge(_) => (),
             AuthPubkey(_) => {
@@ -181,15 +181,15 @@ impl ClientConn {
                     return Err(Error::AuthFailure);
                 }
 
-                let mut challenge: Option<&String> = None;
-                let mut relay: Option<&String> = None;
+                let mut challenge: Option<&str> = None;
+                let mut relay: Option<&str> = None;
 
                 for tag in &event.tags {
                     if tag.len() == 2 && tag.get(0) == Some(&"challenge".into()) {
-                        challenge = tag.get(1);
+                        challenge = tag.get(1).map(|x| x.as_str());
                     }
                     if tag.len() == 2 && tag.get(0) == Some(&"relay".into()) {
-                        relay = tag.get(1);
+                        relay = tag.get(1).map(|x| x.as_str());
                     }
                 }
 

src/nauthz.rs

@@ -41,7 +41,7 @@ impl std::convert::From<Nip05Name> for nauthz_grpc::event_request::Nip05Name {
 }
 
 // conversion of event tags into gprc struct
-fn tags_to_protobuf(tags: &Vec<Vec<String>>) -> Vec<TagEntry> {
+fn tags_to_protobuf(tags: &[Vec<String>]) -> Vec<TagEntry> {
     tags.iter()
         .map(|x| TagEntry { values: x.clone() })
         .collect()

src/repo/sqlite.rs

@@ -1072,8 +1072,6 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>, Option<Stri
             // find evidence of the target tag name/value existing for this event.
             // Query for Kind/Since/Until additionally, to reduce the number of tags that come back.
             let kind_clause;
-            let since_clause;
-            let until_clause;
             if let Some(ks) = &f.kinds {
                 // kind is number, no escaping needed
                 let str_kinds: Vec<String> =
@@ -1082,16 +1080,16 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>, Option<Stri
             } else {
                 kind_clause = String::new();
             };
-            if f.since.is_some() {
-                since_clause = format!("AND created_at >= {}", f.since.unwrap());
+            let since_clause = if f.since.is_some() {
+                format!("AND created_at >= {}", f.since.unwrap())
             } else {
-                since_clause = String::new();
+                String::new()
             };
             // Query for timestamp
-            if f.until.is_some() {
-                until_clause = format!("AND created_at <= {}", f.until.unwrap());
+            let until_clause = if f.until.is_some() {
+                format!("AND created_at <= {}", f.until.unwrap())
             } else {
-                until_clause = String::new();
+                String::new()
             };
 
             let tag_clause = format!(

src/server.rs

@@ -30,6 +30,8 @@ use hyper::upgrade::Upgraded;
 use hyper::{
     header, server::conn::AddrStream, upgrade, Body, Request, Response, Server, StatusCode,
 };
+use nostr::key::FromPkStr;
+use nostr::key::Keys;
 use prometheus::IntCounterVec;
 use prometheus::IntGauge;
 use prometheus::{Encoder, Histogram, HistogramOpts, IntCounter, Opts, Registry, TextEncoder};
@@ -60,8 +62,6 @@ use tungstenite::error::Error as WsError;
 use tungstenite::handshake;
 use tungstenite::protocol::Message;
 use tungstenite::protocol::WebSocketConfig;
-use nostr::key::FromPkStr;
-use nostr::key::Keys;
 
 /// Handle arbitrary HTTP requests, including for `WebSocket` upgrades.
 #[allow(clippy::too_many_arguments)]
@@ -1029,7 +1029,7 @@ fn make_notice_message(notice: &Notice) -> Message {
     Message::text(json.to_string())
 }
 
-fn allowed_to_send(event_str: &String, conn: &conn::ClientConn, settings: &Settings) -> bool {
+fn allowed_to_send(event_str: &str, conn: &conn::ClientConn, settings: &Settings) -> bool {
     // TODO: pass in kind so that we can avoid deserialization for most events
     if settings.authorization.nip42_dms {
         match serde_json::from_str::<Event>(event_str) {
@@ -1038,16 +1038,14 @@ fn allowed_to_send(event_str: &String, conn: &conn::ClientConn, settings: &Setti
                     match (conn.auth_pubkey(), event.tag_values_by_name("p").first()) {
                         (Some(auth_pubkey), Some(recipient_pubkey)) => {
                             recipient_pubkey == auth_pubkey || &event.pubkey == auth_pubkey
-                        },
-                        (_, _) => {
-                            false
-                        },
+                        }
+                        (_, _) => false,
                     }
                 } else {
                     true
                 }
-            },
-            Err(_) => false
+            }
+            Err(_) => false,
         }
     } else {
         true

src/utils.rs

@@ -37,7 +37,7 @@ pub fn is_lower_hex(s: &str) -> bool {
     })
 }
 
-pub fn host_str(url: &String) -> Option<String> {
+pub fn host_str(url: &str) -> Option<String> {
     Url::parse(url)
         .ok()
         .and_then(|u| u.host_str().map(|s| s.to_string()))

tests/integration_test.rs

@@ -73,7 +73,7 @@ async fn publish_test() -> Result<()> {
     let event_sub = r#"["REQ", "simple", {}]"#;
     sub_ws.send(event_sub.into()).await?;
     // read from subscription
-    let ws_next = sub_ws.next().await;
+    let _ws_next = sub_ws.next().await;
     let _res = relay.shutdown_tx.send(());
     Ok(())
 }