feat(status-page): add support for reloading config / restarting workers / clearing logs on the status page

- Simplified the config_reload function by removing the old workers count parameter, focusing on bind address changes.
- Introduced new API endpoints for clearing logs, reloading configuration, and restarting workers, enhancing service control capabilities.
- Updated the web UI to include a service control section for managing logs and configuration dynamically.
- Improved signal handling in the supervisor for better worker management during configuration reloads.

Author: stackia

src/configuration.c

@@ -743,7 +743,7 @@ void set_config_file_path(const char *path) {
  * Respects cmd_*_set flags - resources set by command line are NOT freed.
  * Does NOT reset cmd_*_set flags (they track command line args).
  */
-void config_free(void) {
+void config_free(bool force_free) {
   /* Free all services */
   service_free_all();
 
@@ -754,27 +754,27 @@ void config_free(void) {
   m3u_reset_external_playlist();
 
   /* Free string config values */
-  if (!cmd_hostname_set)
+  if (!cmd_hostname_set || force_free)
     safe_free_string(&config.hostname);
-  if (!cmd_r2h_token_set)
+  if (!cmd_r2h_token_set || force_free)
     safe_free_string(&config.r2h_token);
-  if (!cmd_ffmpeg_path_set)
+  if (!cmd_ffmpeg_path_set || force_free)
     safe_free_string(&config.ffmpeg_path);
-  if (!cmd_ffmpeg_args_set)
+  if (!cmd_ffmpeg_args_set || force_free)
     safe_free_string(&config.ffmpeg_args);
-  if (!cmd_status_page_path_set) {
+  if (!cmd_status_page_path_set || force_free) {
     safe_free_string(&config.status_page_path);
     safe_free_string(&config.status_page_route);
   }
-  if (!cmd_player_page_path_set) {
+  if (!cmd_player_page_path_set || force_free) {
     safe_free_string(&config.player_page_path);
     safe_free_string(&config.player_page_route);
   }
-  if (!cmd_external_m3u_url_set)
+  if (!cmd_external_m3u_url_set || force_free)
     safe_free_string(&config.external_m3u_url);
 
   /* Free bind addresses */
-  if (!cmd_bind_set) {
+  if (!cmd_bind_set || force_free) {
     free_bindaddr(bind_addresses);
     bind_addresses = NULL;
   }
@@ -844,25 +844,22 @@ void config_init(void) {
  * Reload configuration from file
  * Sequence: config_free() -> config_init() -> parse_config_file()
  *
- * @param out_old_workers If non-NULL, receives the old workers count
  * @param out_bind_changed If non-NULL, set to 1 if bind addresses changed
  * @return 0 on success, -1 on error (keeps old config)
  */
-int config_reload(int *out_old_workers, int *out_bind_changed) {
-  int old_workers;
+int config_reload(int *out_bind_changed) {
   bindaddr_t *old_bind_addresses;
 
   if (!config_file_path) {
     logger(LOG_ERROR, "No config file path set, cannot reload");
     return -1;
   }
 
-  /* Save current values for comparison and potential rollback */
-  old_workers = config.workers;
+  /* Save current bind addresses for comparison and potential rollback */
   old_bind_addresses = copy_bindaddr(bind_addresses);
 
   /* Step 1: Free all configuration resources */
-  config_free();
+  config_free(false);
 
   /* Step 2: Initialize configuration with defaults */
   config_init();
@@ -871,8 +868,6 @@ int config_reload(int *out_old_workers, int *out_bind_changed) {
   if (parse_config_file(config_file_path) != 0) {
     logger(LOG_ERROR, "Failed to parse config file during reload: %s",
            config_file_path);
-    /* Restore old workers count */
-    config.workers = old_workers;
     /* Restore old bind addresses */
     if (!cmd_bind_set) {
       bind_addresses = old_bind_addresses;
@@ -889,11 +884,6 @@ int config_reload(int *out_old_workers, int *out_bind_changed) {
         !bind_addresses_equal(bind_addresses, old_bind_addresses);
   }
 
-  /* Output old workers count for supervisor to compare */
-  if (out_old_workers) {
-    *out_old_workers = old_workers;
-  }
-
   /* Clean up saved bind addresses */
   if (old_bind_addresses)
     free_bindaddr(old_bind_addresses);

src/configuration.h

@@ -2,6 +2,7 @@
 #define __CONFIGURATION_H__
 
 #include <net/if.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 
@@ -133,19 +134,19 @@ void config_init(void);
  * Free all configuration resources
  * Frees services, EPG cache, M3U cache, bind addresses, and config strings.
  * Respects cmd_*_set flags - resources set by command line are NOT freed.
+ * If force_free is true, all resources are freed regardless of cmd_*_set flags.
  */
-void config_free(void);
+void config_free(bool force_free);
 
 /**
  * Reload configuration from file
  * Sequence: config_free() -> config_init() -> parse_config_file()
  * Respects command line overrides (cmd_*_set flags).
  *
- * @param out_old_workers If non-NULL, receives the old workers count
  * @param out_bind_changed If non-NULL, set to 1 if bind addresses changed
  * @return 0 on success, -1 on error (keeps old config)
  */
-int config_reload(int *out_old_workers, int *out_bind_changed);
+int config_reload(int *out_bind_changed);
 
 /**
  * Get the config file path used during startup

src/connection.c

@@ -645,6 +645,21 @@ int connection_route_and_start(connection_t *c) {
       handle_set_log_level(c);
       return 0;
     }
+    if (api_name_len == strlen("clear-logs") &&
+        strncmp(api_name, "clear-logs", api_name_len) == 0) {
+      handle_clear_logs(c);
+      return 0;
+    }
+    if (api_name_len == strlen("reload-config") &&
+        strncmp(api_name, "reload-config", api_name_len) == 0) {
+      handle_reload_config(c);
+      return 0;
+    }
+    if (api_name_len == strlen("restart-workers") &&
+        strncmp(api_name, "restart-workers", api_name_len) == 0) {
+      handle_restart_workers(c);
+      return 0;
+    }
 
     http_send_404(c);
     return 0;