Add html page

src/routes/pages/mod.rs

@@ -1,22 +1,57 @@
 use crate::health::HealthState;
+use crate::health::HealthStatus;
+use chrono::Utc;
 use rocket::{get, State};
+use rocket_contrib::templates::Template;
+use serde::Serialize;
 use std::sync::Arc;
-use tokio::task::spawn;
 
 #[get("/")]
-pub async fn index(state: State<'_, Arc<HealthState>>) -> String {
-    {
-        let state = Arc::clone(state.inner());
-        spawn(async move {
-            state.update().await;
-        });
+pub async fn dashboard(state: State<'_, Arc<HealthState>>) -> Template {
+    #[derive(Debug, Serialize)]
+    struct Service {
+        name: String,
+        status_text: &'static str,
+        status_color: &'static str,
     }
 
-    let mut out = String::new();
+    #[derive(Debug, Serialize)]
+    struct TemplateContext {
+        last_update: String,
+        services: Vec<Service>,
+    }
+
+    let last_update = *state.last_update.lock().await;
+
+    let mut context = TemplateContext {
+        last_update: last_update
+            .map(|last_update| {
+                let now = Utc::now();
+                if now.date() == last_update.date() {
+                    format!("UTC {}", last_update.format("%H:%M:%S"))
+                } else {
+                    format!("UTC {}", last_update.format("%Y-%m-%d %H:%M:%S"))
+                }
+            })
+            .unwrap_or_else(|| "never".to_string()),
+        services: vec![],
+    };
 
     for (id, status) in &state.health {
-        out.push_str(&format!("{}: {:?}\n", id, &*status.lock().await));
+        let (status_color, status_text) = match *status.lock().await {
+            Some(HealthStatus::Up) => ("green", "UP"),
+            Some(HealthStatus::Down) => ("red", "DOWN"),
+            Some(HealthStatus::Errored) => ("orange", "ERRORED"),
+            None => ("#5b5b5b", "UNKNOWN"),
+        }
+        .into();
+
+        context.services.push(Service {
+            name: id.clone(),
+            status_color,
+            status_text,
+        })
     }
 
-    out
+    Template::render("dashboard", &context)
 }