tank information web server api endpoint

rust/src/webserver/webserver.rs

@@ -1,7 +1,8 @@
 //offer ota and config mode
 
 use crate::{
-    get_version, log::LogMessage, map_range_moisture, plant_hal::PLANT_COUNT, BOARD_ACCESS,
+    determine_tank_state, get_version, log::LogMessage, map_range_moisture, plant_hal::PLANT_COUNT,
+    BOARD_ACCESS,
 };
 use anyhow::bail;
 use chrono::DateTime;
@@ -240,6 +241,18 @@ fn pump_test(
     anyhow::Ok(None)
 }
 
+fn tank_info(
+    _request: &mut Request<&mut EspHttpConnection>,
+) -> Result<Option<std::string::String>, anyhow::Error> {
+    let mut board = BOARD_ACCESS.lock().unwrap();
+    let config = board.get_config()?;
+    let tank_info = determine_tank_state(&mut board, &config);
+    let water_temp = board.water_temperature_c();
+    Ok(Some(serde_json::to_string(
+        &tank_info.as_mqtt_info(&config.tank, water_temp),
+    )?))
+}
+
 fn night_lamp_test(
     request: &mut Request<&mut EspHttpConnection>,
 ) -> Result<Option<std::string::String>, anyhow::Error> {
@@ -407,6 +420,11 @@ pub fn httpd(reboot_now: Arc<AtomicBool>) -> Box<EspHttpServer<'static>> {
             handle_error_to500(request, write_time)
         })
         .unwrap();
+    server
+        .fn_handler("/tank", Method::Get, |request| {
+            handle_error_to500(request, tank_info)
+        })
+        .unwrap();
     server
         .fn_handler("/pumptest", Method::Post, |request| {
             handle_error_to500(request, pump_test)