Convert to monorepo with utils library

utils/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "utils"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+actix-web = "4.3.1"

utils/src/lib.rs

@@ -0,0 +1,21 @@
+use actix_web::{http::header, HttpRequest};
+
+pub fn is_human(request: &HttpRequest) -> bool {
+    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent
+    const HUMANS: &[&str] = &[
+        "Firefox", "Chrome",  // Chrome and Chromium browsers
+        "Opera",   // Old Presto-based Opera
+        "Mobile",  // Safari
+        "Trident", // Internet Explorer
+    ];
+    request
+        .headers()
+        .get(header::USER_AGENT)
+        .and_then(|header| header.to_str().ok())
+        .map(|ua| {
+            HUMANS
+                .iter()
+                .any(|&human| ua.contains(human))
+        })
+        .unwrap_or(false)
+}