log: add log query API endpoints and display logs on web interface

main/web_server.c

@@ -4,6 +4,7 @@
 #include "uart_handler.h"
 #include "ethernet_manager.h"
 #include "ota_handler.h"
+#include "log_handler.h"
 #include "esp_log.h"
 #include "cJSON.h"
 #include <string.h>
@@ -490,6 +491,42 @@ static esp_err_t api_system_status_handler(httpd_req_t *req) {
 	return send_json_success(req, status);
 }
 
+// ============================================================================
+// Log API Handlers
+// ============================================================================
+
+static esp_err_t api_logs_get_handler(httpd_req_t *req) {
+	// Get log buffer size
+	size_t log_size = log_get_size();
+	if (log_size == 0) {
+		httpd_resp_set_type(req, "text/plain");
+		httpd_resp_sendstr(req, "No logs available");
+		return ESP_OK;
+	}
+
+	// Allocate buffer for logs
+	char *log_buf = malloc(log_size + 1);
+	if (!log_buf) {
+		return send_json_error(req, "Failed to allocate memory for logs");
+	}
+
+	// Get logs
+	size_t copied = log_get_buffer(log_buf, log_size);
+	log_buf[copied] = '\0';
+
+	// Send response
+	httpd_resp_set_type(req, "text/plain");
+	httpd_resp_sendstr(req, log_buf);
+
+	free(log_buf);
+	return ESP_OK;
+}
+
+static esp_err_t api_logs_clear_handler(httpd_req_t *req) {
+	log_clear_buffer();
+	return send_json_success(req, cJSON_CreateObject());
+}
+
 // ============================================================================
 // OTA API Handlers
 // ============================================================================
@@ -797,6 +834,18 @@ static const httpd_uri_t uri_api_ota_upload = {
     .handler = api_ota_upload_handler,
 };
 
+static const httpd_uri_t uri_api_logs_get = {
+    .uri = "/api/logs",
+    .method = HTTP_GET,
+    .handler = api_logs_get_handler,
+};
+
+static const httpd_uri_t uri_api_logs_clear = {
+    .uri = "/api/logs/clear",
+    .method = HTTP_POST,
+    .handler = api_logs_clear_handler,
+};
+
 // ============================================================================
 // Public Functions
 // ============================================================================
@@ -846,6 +895,8 @@ esp_err_t web_server_start(void) {
 	httpd_register_uri_handler(server, &uri_api_ota_status);
 	httpd_register_uri_handler(server, &uri_api_ota_update);
 	httpd_register_uri_handler(server, &uri_api_ota_upload);
+	httpd_register_uri_handler(server, &uri_api_logs_get);
+	httpd_register_uri_handler(server, &uri_api_logs_clear);
 
 	// Register UART callback for WebSocket broadcast at startup
 	esp_err_t cb_ret = uart_register_rx_callback(uart_to_ws_callback);