3 files changed, 115 insertions, 0 deletions
diff --git a/include/pio/libs/mqtt_module_diagnostics/homekit/mqtt/module/diagnostics.cpp b/include/pio/libs/mqtt_module_diagnostics/homekit/mqtt/module/diagnostics.cpp
new file mode 100644
index 0000000..e0f797e
--- /dev/null
+++ b/include/pio/libs/mqtt_module_diagnostics/homekit/mqtt/module/diagnostics.cpp
@@ -0,0 +1,56 @@
+#include "./diagnostics.h"
+#include <homekit/wifi.h>
+#include <ESP8266WiFi.h>
+
+namespace homekit::mqtt {
+
+static const char TOPIC_DIAGNOSTICS[] = "diag";
+static const char TOPIC_INITIAL_DIAGNOSTICS[] = "d1ag";
+
+void MqttDiagnosticsModule::onConnect(Mqtt &mqtt) {
+    sendDiagnostics(mqtt);
+}
+
+void MqttDiagnosticsModule::onDisconnect(Mqtt &mqtt, espMqttClientTypes::DisconnectReason reason) {
+    initialSent = false;
+}
+
+void MqttDiagnosticsModule::tick(Mqtt& mqtt) {
+    if (!tickElapsed())
+        return;
+    sendDiagnostics(mqtt);
+}
+
+void MqttDiagnosticsModule::sendDiagnostics(Mqtt& mqtt) {
+    auto cfg = config::read();
+
+    if (!initialSent) {
+        MqttInitialDiagnosticsPayload stat{
+                .ip = wifi::getIPAsInteger(),
+                .fw_version = CONFIG_FW_VERSION,
+                .rssi = wifi::getRSSI(),
+                .free_heap = ESP.getFreeHeap(),
+                .flags = DiagnosticsFlags{
+                        .state = 1,
+                        .config_changed_value_present = 1,
+                        .config_changed = static_cast<uint8_t>(cfg.flags.node_configured ||
+                                                               cfg.flags.wifi_configured ? 1 : 0)
+                }
+        };
+        mqtt.publish(TOPIC_INITIAL_DIAGNOSTICS, reinterpret_cast<uint8_t*>(&stat), sizeof(stat));
+        initialSent = true;
+    } else {
+        MqttDiagnosticsPayload stat{
+                .rssi = wifi::getRSSI(),
+                .free_heap = ESP.getFreeHeap(),
+                .flags = DiagnosticsFlags{
+                        .state = 1,
+                        .config_changed_value_present = 0,
+                        .config_changed = 0
+                }
+        };
+        mqtt.publish(TOPIC_DIAGNOSTICS, reinterpret_cast<uint8_t*>(&stat), sizeof(stat));
+    }
+}
+
+}
diff --git a/include/pio/libs/mqtt_module_diagnostics/homekit/mqtt/module/diagnostics.h b/include/pio/libs/mqtt_module_diagnostics/homekit/mqtt/module/diagnostics.h
new file mode 100644
index 0000000..bb7a81a
--- /dev/null
+++ b/include/pio/libs/mqtt_module_diagnostics/homekit/mqtt/module/diagnostics.h
@@ -0,0 +1,49 @@
+#ifndef HOMEKIT_LIB_MQTT_MODULE_DIAGNOSTICS_H
+#define HOMEKIT_LIB_MQTT_MODULE_DIAGNOSTICS_H
+
+#include <stdint.h>
+#include <homekit/mqtt/module.h>
+
+namespace homekit::mqtt {
+
+struct DiagnosticsFlags {
+    uint8_t state: 1;
+    uint8_t config_changed_value_present: 1;
+    uint8_t config_changed: 1;
+    uint8_t reserved: 5;
+} __attribute__((packed));
+
+struct MqttInitialDiagnosticsPayload {
+    uint32_t ip;
+    uint8_t fw_version;
+    int8_t rssi;
+    uint32_t free_heap;
+    DiagnosticsFlags flags;
+} __attribute__((packed));
+
+struct MqttDiagnosticsPayload {
+    int8_t rssi;
+    uint32_t free_heap;
+    DiagnosticsFlags flags;
+} __attribute__((packed));
+
+
+class MqttDiagnosticsModule: public MqttModule {
+private:
+    bool initialSent;
+
+    void sendDiagnostics(Mqtt& mqtt);
+
+public:
+    MqttDiagnosticsModule()
+        : MqttModule(30)
+        , initialSent(false) {}
+
+    void onConnect(Mqtt& mqtt) override;
+    void onDisconnect(Mqtt& mqtt, espMqttClientTypes::DisconnectReason reason) override;
+    void tick(Mqtt& mqtt) override;
+};
+
+}
+
+#endif //HOMEKIT_LIB_MQTT_MODULE_DIAGNOSTICS_H
diff --git a/include/pio/libs/mqtt_module_diagnostics/library.json b/include/pio/libs/mqtt_module_diagnostics/library.json
new file mode 100644
index 0000000..70acb79
--- /dev/null
+++ b/include/pio/libs/mqtt_module_diagnostics/library.json
@@ -0,0 +1,10 @@
+{
+  "name": "homekit_mqtt_module_diagnostics",
+  "version": "1.0.3",
+  "build": {
+    "flags": "-I../../include"
+  },
+  "dependencies": {
+    "homekit_mqtt": "file://../../include/pio/libs/mqtt"
+  }
+}