feat: Show first result latency

src/main.rs

@@ -7,6 +7,8 @@ use lazy_static::lazy_static;
 use reqwest::ClientBuilder;
 use rocket::response::content::{RawCss, RawHtml};
 use rocket::response::stream::TextStream;
+use rocket::time::Instant;
+use utils::utils::Yieldable;
 
 use crate::helpers::helpers::run_search;
 use crate::static_files::static_files::read_file_contents;
@@ -54,6 +56,8 @@ async fn hello<'a>(query: &str) -> RawHtml<TextStream![String]> {
     let completed_ref_writer = completed_ref.clone();
     let brave_ref = Arc::new(Mutex::new(Brave::new()));
     let brave_ref_writer = brave_ref.clone();
+    let mut brave_first_result_has_yielded = false;
+    let brave_first_result_start = Instant::now();
     let client = Arc::new(Box::new(
         ClientBuilder::new().user_agent(USER_AGENT).build().unwrap(),
     ));
@@ -92,6 +96,13 @@ async fn hello<'a>(query: &str) -> RawHtml<TextStream![String]> {
             }
             drop(completed);
 
+            if !brave_first_result_has_yielded {
+                let diff = brave_first_result_start.elapsed().whole_milliseconds();
+                brave_first_result_has_yielded = true;
+
+                yield format!("<strong>Time taken: {}ms</strong>", diff);
+            }
+
             for ii in (current_index + 1)..len {
                 let result = brave.results.get(ii).unwrap();
 

src/utils.rs

@@ -323,4 +323,10 @@ pub mod utils {
             }
         ).to_string()
     }
+
+    pub enum Yieldable<T> {
+        AwaitingValue,
+        YieldRequired(T),
+        Completed(T),
+    }
 }