Add PSRAM-based NVS caching

main/http_server/handler_alert.cpp

@@ -79,6 +79,8 @@ esp_err_t POST_update_alert(httpd_req_t *req)
 
     doc.clear();
 
+    Config::flush_nvs_changes();  // Commit batched alert settings to NVS
+    ESP_LOGI(TAG, "Alert configuration flushed to NVS");
     httpd_resp_send_chunk(req, NULL, 0);
 
     // reload discord alerter config

main/http_server/handler_influx.cpp

@@ -105,7 +105,8 @@ esp_err_t PATCH_update_influx(httpd_req_t *req)
     }
 
     doc.clear();
-
+    Config::flush_nvs_changes();  // Commit batched Influx settings to NVS
+    ESP_LOGI(TAG, "Influx configuration flushed to NVS");
     httpd_resp_send_chunk(req, NULL, 0);
     return ESP_OK;
 }

main/http_server/handler_restart.cpp

@@ -4,6 +4,7 @@
 #include "global_state.h"
 #include "http_cors.h"
 #include "http_utils.h"
+#include "nvs_config.h"
 
 static const char *TAG = "http_restart";
 
@@ -19,6 +20,8 @@ esp_err_t POST_restart(httpd_req_t *req)
 
     ESP_LOGI(TAG, "Restarting System because of API Request");
 
+    Config::flush_nvs_changes();  // Ensure persistent settings are saved
+
     // Send HTTP response before restarting
     const char *resp_str = "System will restart shortly.";
     httpd_resp_send(req, resp_str, HTTPD_RESP_USE_STRLEN);

main/http_server/handler_swarm.cpp

@@ -36,6 +36,8 @@ esp_err_t PATCH_update_swarm(httpd_req_t *req)
     buf[total_len] = '\0';
 
     Config::setSwarmConfig(buf);
+    Config::flush_nvs_changes();  // Ensure Swarm config is written to flash
+    ESP_LOGI(TAG, "Swarm config flushed to NVS");
     httpd_resp_send_chunk(req, NULL, 0);
     return ESP_OK;
 }
@@ -59,4 +61,4 @@ esp_err_t GET_swarm(httpd_req_t *req)
     httpd_resp_sendstr(req, swarm_config);
     free(swarm_config);
     return ESP_OK;
-}
+}

main/http_server/handler_system.cpp

@@ -330,6 +330,10 @@ esp_err_t PATCH_update_settings(httpd_req_t *req)
 
     doc.clear();
 
+    // Apply all changes to NVS in one go
+    Config::flush_nvs_changes();
+    ESP_LOGI(TAG, "Configuration changes flushed to NVS");
+
     // Signal the end of the response
     httpd_resp_send_chunk(req, NULL, 0);
 

main/main.cpp

@@ -141,6 +141,9 @@ extern "C" void app_main(void)
     // shows and saves last reset reason
     esp_reset_reason_t reason = SYSTEM_MODULE.showLastResetReason();
 
+    // initialize cache and mutex for config
+    Config::init_cache();
+
     // migrate config
     Config::migrate_config();
 
@@ -177,7 +180,6 @@ extern "C" void app_main(void)
     board->loadSettings();
     board->initBoard();
 
-
     SYSTEM_MODULE.setBoard(board);
 
     size_t total_psram = esp_psram_get_size();