Auto hotspot implementation

PiPedalCommon/src/include/WifiConfigSettings.hpp

@@ -21,6 +21,23 @@
 
 #include "json.hpp"
 
+
+#ifndef NEW_WIFI_CONFIG
+// 0-> Old hostapd-based hotspot. Now dead code. Works with buster only.
+// 1-> NetworkManager-based hotspot (supported on bookworm or later).
+#define NEW_WIFI_CONFIG 1
+#endif
+
+// Wifi P2P broken completely on Debian 12 updates on raspberry pi.
+// 
+// Setting it to enable uses current-orphaned dead code as of PiPedal v1.2.49
+//
+// 0: disable.
+// 1: enable.
+#ifndef ENABLE_WIFI_P2P
+#define ENABLE_WIFI_P2P 0
+#endif
+
 namespace pipedal {
 
 
@@ -30,6 +47,12 @@ namespace pipedal {
     
     class WifiConfigSettings {
     public:
+        using ssid_t = std::vector<uint8_t>;
+        WifiConfigSettings();
+
+        void Load();
+        void Save();
+
         bool valid_ = false;
         bool wifiWarningGiven_ = false;
         bool rebootRequired_ = false;
@@ -37,13 +60,20 @@ namespace pipedal {
         std::string countryCode_ = "US"; // iso 3661
         std::string hotspotName_ = "pipedal";
         std::string mdnsName_ = "pipedal";
+        std::vector<ssid_t> homeNetworks_;
         bool hasPassword_ = false;
         std::string password_;
-        std::string channel_ = "g6";
+        std::string channel_ = "";
+        bool alwaysOn_ = false;
 
         void ParseArguments(const std::vector<std::string> &arguments);
         static bool ValidateCountryCode(const std::string&value);
         static bool ValidateChannel(const std::string&countryCode,const std::string&value);
+
+        bool operator==(const WifiConfigSettings&other) const;
+        bool ConfigurationChanged(const WifiConfigSettings&other) const;
+        bool WantsHotspot(bool ethernetConnected,const std::vector<ssid_t> &availableNetworks);
+
     public:
         DECLARE_JSON_MAP(WifiConfigSettings);
     };