feat: Add system date display and setting via API

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

src/api.rs

@@ -19,6 +19,7 @@ struct ApiStatus {
     ltc_timecode: String,
     frame_rate: String,
     system_clock: String,
+    system_date: String,
     timecode_delta_ms: i64,
     timecode_delta_frames: i64,
     sync_status: String,
@@ -58,6 +59,7 @@ async fn get_status(data: web::Data<AppState>) -> impl Responder {
         now_local.second(),
         now_local.timestamp_subsec_millis(),
     );
+    let system_date = now_local.format("%Y-%m-%d").to_string();
 
     let avg_delta = state.get_ewma_clock_delta();
     let mut delta_frames = 0;
@@ -83,6 +85,7 @@ async fn get_status(data: web::Data<AppState>) -> impl Responder {
         ltc_timecode,
         frame_rate,
         system_clock,
+        system_date,
         timecode_delta_ms: avg_delta,
         timecode_delta_frames: delta_frames,
         sync_status: sync_status.to_string(),
@@ -135,6 +138,22 @@ async fn nudge_clock(req: web::Json<NudgeRequest>) -> impl Responder {
     }
 }
 
+#[derive(Deserialize)]
+struct SetDateRequest {
+    date: String,
+}
+
+#[post("/api/set_date")]
+async fn set_date(req: web::Json<SetDateRequest>) -> impl Responder {
+    if system::set_date(&req.date).is_ok() {
+        HttpResponse::Ok()
+            .json(serde_json::json!({ "status": "success", "message": "Date update command issued." }))
+    } else {
+        HttpResponse::InternalServerError()
+            .json(serde_json::json!({ "status": "error", "message": "Date update command failed." }))
+    }
+}
+
 #[post("/api/config")]
 async fn update_config(
     data: web::Data<AppState>,
@@ -192,6 +211,7 @@ pub async fn start_api_server(
             .service(update_config)
             .service(get_logs)
             .service(nudge_clock)
+            .service(set_date)
             // Serve frontend static files
             .service(fs::Files::new("/", "static/").index_file("index.html"))
     })

src/system.rs

@@ -131,6 +131,33 @@ pub fn nudge_clock(microseconds: i64) -> Result<(), ()> {
     }
 }
 
+pub fn set_date(date: &str) -> Result<(), ()> {
+    #[cfg(target_os = "linux")]
+    {
+        let success = Command::new("sudo")
+            .arg("date")
+            .arg("--set")
+            .arg(date)
+            .status()
+            .map(|s| s.success())
+            .unwrap_or(false);
+
+        if success {
+            log::info!("Set system date to {}", date);
+            Ok(())
+        } else {
+            log::error!("Failed to set system date");
+            Err(())
+        }
+    }
+    #[cfg(not(target_os = "linux"))]
+    {
+        let _ = date;
+        log::warn!("Date setting is only supported on Linux.");
+        Err(())
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;