add own entities read from ems-bus with free factor

src/web/WebEntityService.h

@@ -0,0 +1,74 @@
+/*
+ * EMS-ESP - https://github.com/emsesp/EMS-ESP
+ * Copyright 2020-2023  Paul Derbyshire
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "../telegram.h"
+
+#ifndef WebEntityService_h
+#define WebEntityService_h
+
+#define EMSESP_ENTITY_FILE "/config/emsespEntity.json"
+#define EMSESP_ENTITY_SERVICE_PATH "/rest/entity" // GET and POST
+
+namespace emsesp {
+
+class EntityItem {
+  public:
+    uint8_t     device_id;
+    uint16_t    type_id;
+    uint8_t     offset;
+    int8_t      valuetype;
+    uint8_t     uom;
+    std::string name;
+    double      factor;
+    uint32_t    val;
+};
+
+class WebEntity {
+  public:
+    std::list<EntityItem> entityItems;
+
+    static void              read(WebEntity & webEntity, JsonObject & root);
+    static StateUpdateResult update(JsonObject & root, WebEntity & webEntity);
+};
+
+class WebEntityService : public StatefulService<WebEntity> {
+  public:
+    WebEntityService(AsyncWebServer * server, FS * fs, SecurityManager * securityManager);
+
+    void    begin();
+    void    publish_single(const EntityItem & entity);
+    void    publish(const bool force = false);
+    bool    command_setvalue(const char * value, const std::string name);
+    bool    get_value_info(JsonObject & output, const char * cmd);
+    bool    get_value(std::shared_ptr<const Telegram> telegram);
+    void    fetch();
+    void    render_value(JsonObject & output, EntityItem entity, const bool useVal = false);
+    uint8_t count_entities();
+    void    generate_value_web(JsonObject & output);
+
+
+  private:
+    HttpEndpoint<WebEntity>  _httpEndpoint;
+    FSPersistence<WebEntity> _fsPersistence;
+
+    std::list<EntityItem> * entityItems; // pointer to the list of schedule events
+    bool                    ha_registered_ = false;
+};
+
+} // namespace emsesp
+
+#endif