backup info and read

rust/src/webserver/webserver.rs

@@ -51,6 +51,12 @@ pub struct TestPump {
     pump: usize,
 }
 
+#[derive(Serialize, Deserialize, PartialEq, Debug)]
+pub struct WebBackupHeader{
+    timestamp: std::string::String,
+    size: usize
+}
+
 fn write_time(
     request: &mut Request<&mut EspHttpConnection>,
 ) -> Result<Option<std::string::String>, anyhow::Error> {
@@ -159,6 +165,26 @@ fn get_backup_config(
     anyhow::Ok(Some(json))
 }
 
+
+fn backup_info(
+    _request: &mut Request<&mut EspHttpConnection>,
+) -> Result<Option<std::string::String>, anyhow::Error> {
+    let mut board = BOARD_ACCESS.lock().unwrap();
+    let header = board.get_backup_info();
+    let json = match header {
+        Ok(h) => {
+            let timestamp = DateTime::from_timestamp_millis(h.timestamp).unwrap();
+            let wbh = WebBackupHeader{
+                timestamp: timestamp.to_rfc3339(),
+                size: h.size,
+            };
+            serde_json::to_string(&wbh)?
+        },
+        Err(_) => "{\"error\":\"Header could not be parsed\"".to_owned()
+    };
+    anyhow::Ok(Some(json))
+}
+
 fn set_config(
     request: &mut Request<&mut EspHttpConnection>,
 ) -> Result<Option<std::string::String>, anyhow::Error> {
@@ -392,6 +418,11 @@ pub fn httpd(reboot_now: Arc<AtomicBool>) -> Box<EspHttpServer<'static>> {
         handle_error_to500(request, backup_config)
     })
     .unwrap();
+    server
+    .fn_handler("/backup_info", Method::Get, move |request| {
+        handle_error_to500(request, backup_info)
+    })
+    .unwrap();
     server
         .fn_handler("/files", Method::Get, move |request| {
             handle_error_to500(request, list_files)