Added config and webapi to manage inverters

include/Configuration.h

@@ -3,7 +3,7 @@
 #include <Arduino.h>
 
 #define CONFIG_FILENAME "/config.bin"
-#define CONFIG_VERSION 0x00010700 // 0.1.7 // make sure to clean all after change
+#define CONFIG_VERSION 0x00010800 // 0.1.8 // make sure to clean all after change
 
 #define WIFI_MAX_SSID_STRLEN 31
 #define WIFI_MAX_PASSWORD_STRLEN 31
@@ -19,6 +19,14 @@
 #define MQTT_MAX_TOPIC_STRLEN 32
 #define MQTT_MAX_LWTVALUE_STRLEN 20
 
+#define INV_MAX_NAME_STRLEN 31
+#define INV_MAX_COUNT 10
+
+struct INVERTER_CONFIG_T {
+    uint64_t Serial;
+    char Name[INV_MAX_NAME_STRLEN + 1];
+};
+
 struct CONFIG_T {
     uint32_t Cfg_Version;
     uint Cfg_SaveCount;
@@ -47,6 +55,8 @@ struct CONFIG_T {
     char Mqtt_LwtTopic[MQTT_MAX_TOPIC_STRLEN + 1];
     char Mqtt_LwtValue_Online[MQTT_MAX_LWTVALUE_STRLEN + 1];
     char Mqtt_LwtValue_Offline[MQTT_MAX_LWTVALUE_STRLEN + 1];
+
+    INVERTER_CONFIG_T Inverter[INV_MAX_COUNT];
 };
 
 class ConfigurationClass {
@@ -56,6 +66,8 @@ public:
     bool write();
     void migrate();
     CONFIG_T& get();
+
+    INVERTER_CONFIG_T* getFreeInverterSlot();
 };
 
 extern ConfigurationClass Configuration;

include/WebApi.h

@@ -28,6 +28,11 @@ private:
     void onMqttStatus(AsyncWebServerRequest* request);
     void onMqttAdminGet(AsyncWebServerRequest* request);
     void onMqttAdminPost(AsyncWebServerRequest* request);
+
+    void onInverterList(AsyncWebServerRequest* request);
+    void onInverterAdd(AsyncWebServerRequest* request);
+    void onInverterEdit(AsyncWebServerRequest* request);
+    void onInverterDelete(AsyncWebServerRequest* request);
 };
 
 extern WebApiClass WebApi;

src/Configuration.cpp

@@ -32,6 +32,11 @@ void ConfigurationClass::init()
     strlcpy(config.Mqtt_LwtTopic, MQTT_LWT_TOPIC, sizeof(config.Mqtt_LwtTopic));
     strlcpy(config.Mqtt_LwtValue_Online, MQTT_LWT_ONLINE, sizeof(config.Mqtt_LwtValue_Online));
     strlcpy(config.Mqtt_LwtValue_Offline, MQTT_LWT_OFFLINE, sizeof(config.Mqtt_LwtValue_Offline));
+
+    for (uint8_t i = 0; i < INV_MAX_COUNT; i++) {
+        config.Inverter[i].Serial = 0;
+        strlcpy(config.Inverter[i].Name, "", 0);
+    }
 }
 
 bool ConfigurationClass::write()
@@ -90,6 +95,13 @@ void ConfigurationClass::migrate()
         strlcpy(config.Mqtt_LwtValue_Offline, MQTT_LWT_OFFLINE, sizeof(config.Mqtt_LwtValue_Offline));
     }
 
+    if (config.Cfg_Version < 0x00010800) {
+        for (uint8_t i = 0; i < INV_MAX_COUNT; i++) {
+            config.Inverter[i].Serial = 0;
+            strlcpy(config.Inverter[i].Name, "", 0);
+        }
+    }
+
     config.Cfg_Version = CONFIG_VERSION;
     write();
 }
@@ -99,4 +111,15 @@ CONFIG_T& ConfigurationClass::get()
     return config;
 }
 
+INVERTER_CONFIG_T* ConfigurationClass::getFreeInverterSlot()
+{
+    for (uint8_t i = 0; i < INV_MAX_COUNT; i++) {
+        if (config.Inverter[i].Serial == 0) {
+            return &config.Inverter[i];
+        }
+    }
+
+    return NULL;
+}
+
 ConfigurationClass Configuration;

src/WebApi.cpp

@@ -40,6 +40,11 @@ void WebApiClass::init()
     _server.on("/api/mqtt/config", HTTP_GET, std::bind(&WebApiClass::onMqttAdminGet, this, _1));
     _server.on("/api/mqtt/config", HTTP_POST, std::bind(&WebApiClass::onMqttAdminPost, this, _1));
 
+    _server.on("/api/inverter/list", HTTP_GET, std::bind(&WebApiClass::onInverterList, this, _1));
+    _server.on("/api/inverter/add", HTTP_POST, std::bind(&WebApiClass::onInverterAdd, this, _1));
+    _server.on("/api/inverter/edit", HTTP_POST, std::bind(&WebApiClass::onInverterEdit, this, _1));
+    _server.on("/api/inverter/del", HTTP_POST, std::bind(&WebApiClass::onInverterDelete, this, _1));
+
     _server.serveStatic("/", LittleFS, "/", "max-age=86400").setDefaultFile("index.html");
     _server.onNotFound(std::bind(&WebApiClass::onNotFound, this, _1));
     _server.begin();
@@ -554,4 +559,228 @@ void WebApiClass::onMqttAdminPost(AsyncWebServerRequest* request)
     MqttSettings.performReconnect();
 }
 
+void WebApiClass::onInverterList(AsyncWebServerRequest* request)
+{
+    AsyncJsonResponse* response = new AsyncJsonResponse();
+    JsonObject root = response->getRoot();
+    JsonArray data = root.createNestedArray(F("inverter"));
+
+    CONFIG_T& config = Configuration.get();
+
+    for (uint8_t i = 0; i < INV_MAX_COUNT; i++) {
+        if (config.Inverter[i].Serial > 0) {
+            JsonObject obj = data.createNestedObject();
+            obj[F("id")] = i;
+            obj[F("serial")] = config.Inverter[i].Serial;
+            obj[F("name")] = String(config.Inverter[i].Name);
+        }
+    }
+
+    response->setLength();
+    request->send(response);
+}
+
+void WebApiClass::onInverterAdd(AsyncWebServerRequest* request)
+{
+    AsyncJsonResponse* response = new AsyncJsonResponse();
+    JsonObject retMsg = response->getRoot();
+    retMsg[F("type")] = F("warning");
+
+    if (!request->hasParam("data", true)) {
+        retMsg[F("message")] = F("No values found!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    String json = request->getParam("data", true)->value();
+
+    if (json.length() > 1024) {
+        retMsg[F("message")] = F("Data too large!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    DynamicJsonDocument root(1024);
+    DeserializationError error = deserializeJson(root, json);
+
+    if (error) {
+        retMsg[F("message")] = F("Failed to parse data!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (!(root.containsKey("serial") && root.containsKey("name"))) {
+        retMsg[F("message")] = F("Values are missing!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (root[F("serial")].as<uint64_t>() == 0) {
+        retMsg[F("message")] = F("Serial must be a number > 0!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (root[F("name")].as<String>().length() == 0 || root[F("name")].as<String>().length() > INV_MAX_NAME_STRLEN) {
+        retMsg[F("message")] = F("Name must between 1 and " STR(INV_MAX_NAME_STRLEN) " characters long!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    INVERTER_CONFIG_T* inverter = Configuration.getFreeInverterSlot();
+
+    if (!inverter) {
+        retMsg[F("message")] = F("Only " STR(INV_MAX_COUNT) " inverters are supported!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    inverter->Serial = root[F("serial")].as<uint64_t>();
+    strncpy(inverter->Name, root[F("name")].as<String>().c_str(), INV_MAX_NAME_STRLEN);
+    Configuration.write();
+
+    retMsg[F("type")] = F("success");
+    retMsg[F("message")] = F("Inverter created!");
+
+    response->setLength();
+    request->send(response);
+}
+
+void WebApiClass::onInverterEdit(AsyncWebServerRequest* request)
+{
+    AsyncJsonResponse* response = new AsyncJsonResponse();
+    JsonObject retMsg = response->getRoot();
+    retMsg[F("type")] = F("warning");
+
+    if (!request->hasParam("data", true)) {
+        retMsg[F("message")] = F("No values found!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    String json = request->getParam("data", true)->value();
+
+    if (json.length() > 1024) {
+        retMsg[F("message")] = F("Data too large!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    DynamicJsonDocument root(1024);
+    DeserializationError error = deserializeJson(root, json);
+
+    if (error) {
+        retMsg[F("message")] = F("Failed to parse data!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (!(root.containsKey("id") && root.containsKey("serial") && root.containsKey("name"))) {
+        retMsg[F("message")] = F("Values are missing!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (root[F("id")].as<uint64_t>() > INV_MAX_COUNT - 1) {
+        retMsg[F("message")] = F("Invalid ID specified!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (root[F("serial")].as<uint64_t>() == 0) {
+        retMsg[F("message")] = F("Serial must be a number > 0!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (root[F("name")].as<String>().length() == 0 || root[F("name")].as<String>().length() > INV_MAX_NAME_STRLEN) {
+        retMsg[F("message")] = F("Name must between 1 and " STR(INV_MAX_NAME_STRLEN) " characters long!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    INVERTER_CONFIG_T& inverter = Configuration.get().Inverter[root[F("id")].as<uint64_t>()];
+    inverter.Serial = root[F("serial")].as<uint64_t>();
+    strncpy(inverter.Name, root[F("name")].as<String>().c_str(), INV_MAX_NAME_STRLEN);
+    Configuration.write();
+
+    retMsg[F("type")] = F("success");
+    retMsg[F("message")] = F("Inverter changed!");
+
+    response->setLength();
+    request->send(response);
+}
+
+void WebApiClass::onInverterDelete(AsyncWebServerRequest* request)
+{
+    AsyncJsonResponse* response = new AsyncJsonResponse();
+    JsonObject retMsg = response->getRoot();
+    retMsg[F("type")] = F("warning");
+
+    if (!request->hasParam("data", true)) {
+        retMsg[F("message")] = F("No values found!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    String json = request->getParam("data", true)->value();
+
+    if (json.length() > 1024) {
+        retMsg[F("message")] = F("Data too large!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    DynamicJsonDocument root(1024);
+    DeserializationError error = deserializeJson(root, json);
+
+    if (error) {
+        retMsg[F("message")] = F("Failed to parse data!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (!(root.containsKey("id"))) {
+        retMsg[F("message")] = F("Values are missing!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    if (root[F("id")].as<uint64_t>() > INV_MAX_COUNT - 1) {
+        retMsg[F("message")] = F("Invalid ID specified!");
+        response->setLength();
+        request->send(response);
+        return;
+    }
+
+    INVERTER_CONFIG_T& inverter = Configuration.get().Inverter[root[F("id")].as<uint64_t>()];
+    inverter.Serial = 0;
+    strncpy(inverter.Name, "", 0);
+    Configuration.write();
+
+    retMsg[F("type")] = F("success");
+    retMsg[F("message")] = F("Inverter deleted!");
+
+    response->setLength();
+    request->send(response);
+}
+
 WebApiClass WebApi;