begin migrate to warp for evals functionality and site server

1 files changed, 60 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..cbabc10
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,60 @@
+use handlebars::Handlebars;
+use serde::Serialize;
+use serde_json::json;
+use std::sync::Arc;
+use std::time::SystemTime;
+use warp::{Filter, Rejection};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Build template registry
+    let mut hbs = Handlebars::new();
+    hbs.register_template_file("base", "templates/base.hbs")?;
+    hbs.register_template_file("index", "templates/index.hbs")?;
+    let hbs = Arc::new(hbs);
+
+    // Build routes
+    let routes = index_filter(hbs.clone())
+        .or(evals_list())
+        .or(warp::fs::dir("static"));
+
+    // Start server
+    warp::serve(routes).run(([127, 0, 0, 1], 8080)).await;
+
+    // Done
+    Ok(())
+}
+
+fn index_filter(
+    hbs: Arc<Handlebars<'static>>,
+) -> impl Filter<Extract = (impl warp::Reply,), Error = Rejection> + Clone {
+    warp::get()
+        .and(warp::path::end())
+        .map(move || render("index", hbs.clone(), json!({"year", year().unwrap()})))
+}
+
+fn evals_list() -> impl Filter<Extract = (&'static str,), Error = Rejection> + Clone {
+    warp::get()
+        .and(warp::path("evals"))
+        .and(warp::path::end())
+        .map(|| "evals here")
+}
+
+fn render<T>(template: &str, hbs: Arc<Handlebars>, value: T) -> impl warp::Reply
+where
+    T: Serialize,
+{
+    let render = hbs
+        .render(template, &value)
+        .unwrap_or_else(|err| err.to_string());
+    warp::reply::html(render)
+}
+
+const UNIX_YEAR: u64 = 31556926;
+
+fn year() -> Result<u64, Box<dyn std::error::Error>> {
+    let date = SystemTime::now()
+        .duration_since(SystemTime::UNIX_EPOCH)?
+        .as_secs();
+    Ok(date / UNIX_YEAR)
+}