Add homeassistant network stats to wifi panel

src/panel/wifi.cpp

@@ -19,13 +19,21 @@ wifi::wifi(){
     std::cerr << "WIFI CONSTRUCTOR\n";
     _texture = nullptr;
     _time_on_screen = WIFI_DEFAULT_TIME_ON_SCREEN;
+    _update_interval = std::chrono::milliseconds{WIFI_UPDATE_INTERVAL};
     _title = WIFI_TITLE;
+
+    api_curl = curl_easy_init();
+    curl_easy_setopt(api_curl, CURLOPT_WRITEFUNCTION,
+            dashboard::panel::wifi::curl_callback);
+    curl_easy_setopt(api_curl, CURLOPT_WRITEDATA, &json_string);
 }
 
 wifi::~wifi(){
     std::cerr << "WIFI DECONSTRUCTOR\n";
     if(_texture != nullptr)
         SDL_DestroyTexture(_texture);
+    if(api_curl != nullptr)
+        curl_easy_cleanup(api_curl);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -40,6 +48,14 @@ void wifi::draw(){
         update_texture();
     }
 
+    //check if its time to update
+    if((std::chrono::high_resolution_clock::now() - _last_update)
+            > _update_interval){
+        update();
+
+        update_texture();
+    }
+
     SDL_RenderCopy(board::getRenderer(), _texture, NULL, NULL);
 }
 
@@ -51,8 +67,87 @@ void wifi::draw(){
 // Update the information of wifi
 // This DOES NOT update the display
 void wifi::update() {
-    //this shows static info on the wifi network, which does need to change 
+    std::cerr << "WIFI::UPDATE\n";
-    //therefore, no update
+    _last_update = std::chrono::high_resolution_clock::now();
+
+    if(WIFI_HOMEASSISTANT){
+        curl_easy_setopt(api_curl, CURLOPT_URL,
+                WIFI_HOMEASSISTANT_URL);
+        std::string api_string = "Authorization: Bearer ";
+        api_string += WIFI_HOMEASSISTANT_APIKEY;
+
+        struct curl_slist *headers;
+        headers = NULL;
+        headers = curl_slist_append(headers, api_string.c_str());
+        headers = curl_slist_append(headers, "Content-Type: application/json");
+
+        curl_easy_setopt(api_curl, CURLOPT_HTTPHEADER, headers);
+
+        api_string.clear();
+
+        //perform request
+        curl_easy_perform(api_curl);
+
+        //parse the result
+        json_doc.Parse(json_string.c_str());
+
+        //update internal state
+        for(rapidjson::SizeType i = 0; i < json_doc.Size(); i++){
+            //if router external IP
+            if(strcmp(json_doc[i]["entity_id"].GetString(),
+                        WIFI_HOMEASSISTANT_ROUTER_EXTERNAL_IP) == 0
+                    && WIFI_SHOW_PUBLIC_IP){
+                //store it in public IP field
+                public_ip = "WAN IP: ";
+                public_ip += json_doc[i]["state"].GetString();
+            } //if router WAN status
+            else if (strcmp(json_doc[i]["entity_id"].GetString(),
+                        WIFI_HOMEASSISTANT_ROUTER_WAN_STATUS) == 0){
+                if(strcmp(json_doc[i]["state"].GetString(), "Connected") == 0)
+                    wan_status = true;
+                else
+                    wan_status = false;
+            } //speedtest up
+            else if (strcmp(json_doc[i]["entity_id"].GetString(),
+                        WIFI_HOMEASSISTANT_SPEEDTEST_UP) == 0
+                    && WIFI_HOMEASSISTANT_SPEEDTEST){
+                speedtest_up = "Upload: ";
+                speedtest_up += json_doc[i]["state"].GetString();
+                speedtest_up += "MBps";
+            } //speedtest down
+            else if (strcmp(json_doc[i]["entity_id"].GetString(),
+                        WIFI_HOMEASSISTANT_SPEEDTEST_DOWN) == 0
+                    && WIFI_HOMEASSISTANT_SPEEDTEST){
+                speedtest_down = "Download: ";
+                speedtest_down += json_doc[i]["state"].GetString();
+                speedtest_down += "MBps";
+            } //speedtest ping
+            else if (strcmp(json_doc[i]["entity_id"].GetString(),
+                        WIFI_HOMEASSISTANT_SPEEDTEST_PING) == 0
+                    && WIFI_HOMEASSISTANT_SPEEDTEST){
+                speedtest_ping = "Ping: ";
+                speedtest_ping += json_doc[i]["state"].GetString();
+                speedtest_ping += "ms";
+            }
+        }
+    }
+
+    //if not using home assistant, grab it via normal method
+    if(WIFI_SHOW_PUBLIC_IP){
+        //get the string from normal url
+        if(!WIFI_HOMEASSISTANT){
+            public_ip = "WAN IP: ";
+            curl_easy_setopt(api_curl, CURLOPT_URL,
+                    WIFI_PUBLIC_IP_URL);
+
+            //peform request
+            curl_easy_perform(api_curl);
+
+            //parse the result
+            public_ip += json_string;
+        }
+        //the public IP should have already been grabbed above
+    }
 }
 
 ///////////////////////////////////////
@@ -110,24 +205,15 @@ void wifi::update_texture(){
             board::getString(password_string.c_str(),
                 { "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
 
+    tgt.y += tgt.h + 25;
+    TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
+            wan_status ? "Internet is up" : "Internet is down; reconnecting", &tgt.w, &tgt.h);
+    SDL_RenderCopy(board::getRenderer(),
+            board::getString(wan_status ? "Internet is up" : "Internet is down; reconnecting",
+                { "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
+
     //Get public ip address and display it
     if(WIFI_SHOW_PUBLIC_IP){
-        std::string public_ip = "WAN IP: ";
-        CURL* curl;
-        curl = curl_easy_init();
-
-        if(curl){
-            CURLcode res;
-            curl_easy_setopt(curl, CURLOPT_URL, WIFI_PUBLIC_IP_URL);
-            curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, 
-                    dashboard::panel::wifi::curl_callback);
-            curl_easy_setopt(curl, CURLOPT_WRITEDATA, &public_ip);
-            res = curl_easy_perform(curl);
-            curl_easy_cleanup(curl);
-        } else {
-            public_ip += "Unkown";
-        }
-
         tgt.y += tgt.h + 25;
         TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
                 public_ip.c_str(), &tgt.w, &tgt.h);
@@ -136,6 +222,29 @@ void wifi::update_texture(){
                     { "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
     }
 
+    //TODO display speedtest info
+    tgt.y += tgt.h + 25;
+    TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
+            speedtest_ping.c_str(), &tgt.w, &tgt.h);
+    SDL_RenderCopy(board::getRenderer(),
+            board::getString(speedtest_ping.c_str(),
+                { "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
+
+    tgt.y += tgt.h + 25;
+    TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
+            speedtest_up.c_str(), &tgt.w, &tgt.h);
+    SDL_RenderCopy(board::getRenderer(),
+            board::getString(speedtest_up.c_str(),
+                { "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
+
+    tgt.y += tgt.h + 25;
+    TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
+            speedtest_down.c_str(), &tgt.w, &tgt.h);
+    SDL_RenderCopy(board::getRenderer(),
+            board::getString(speedtest_down.c_str(),
+                { "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
+
+
 
     SDL_SetRenderTarget(board::getRenderer(), NULL);
 }

src/panel/wifi.hpp

@@ -13,8 +13,10 @@
 #include <SDL2/SDL_ttf.h>
 
 #include <curl/curl.h>
+#include "../util/rapidjson/document.h"
 
 #include <iostream>
+#include <chrono>
 
 namespace dashboard::panel {
     class wifi : public panel {
@@ -29,6 +31,19 @@ namespace dashboard::panel {
         void update();
         void update_texture();
         void initTexture();
+
+        std::string public_ip;
+        bool wan_status;
+        std::string speedtest_up;
+        std::string speedtest_down;
+        std::string speedtest_ping;
+
+        CURL* api_curl;
+        std::string json_string;
+        rapidjson::Document json_doc;
+
+        std::chrono::time_point<std::chrono::high_resolution_clock> _last_update;
+        std::chrono::milliseconds _update_interval;
     };
 
 }

src/panel/wifi_config.hpp

@@ -16,7 +16,7 @@ namespace dashboard::panel {
     constexpr size_t WIFI_DEFAULT_TIME_ON_SCREEN = 15000;
 
     //How long should we wait between updates? in ms
-    //Due to the nature of this panel, this value is ignored
+    //Default 60s
     constexpr size_t WIFI_UPDATE_INTERVAL = 60000;
 
     //Set to true to have your public IP be shown on the wifi page
@@ -31,4 +31,36 @@ namespace dashboard::panel {
     constexpr char WIFI_NETWORK_NAME[] = "MyNetwork";
     constexpr char WIFI_NETWORK_PASS[] = "MyPassword";
 
+    // Set to true if you have home assistant on your network
+    // If you do, you can do alot more with it, including showing number of
+    // clients, network speed, etc
+    constexpr bool WIFI_HOMEASSISTANT = true;
+
+    //API and URL for home assistant. If using the home assistant panel, this
+    //should be the same
+    constexpr char WIFI_HOMEASSISTANT_APIKEY[] = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiIxYTNhNDhhYTBlZDM0MjkyOTk5OWZhNGVjZGRjMGUwMCIsImlhdCI6MTY0MjE4NDU0MCwiZXhwIjoxOTU3NTQ0NTQwfQ.Zdy7-ZwX0HuwhmUGeLhF5XCluotsKmpDqmi5o-hQZCc";
+    constexpr char WIFI_HOMEASSISTANT_URL[] = "http://192.168.1.104:8123/api/states";
+
+    //Name of the external IP sensor entry in home assistant
+    //If your router integrates with it, then you should be able to find it in
+    //integrations
+    constexpr char WIFI_HOMEASSISTANT_ROUTER_EXTERNAL_IP[] = "sensor.r7000p_gateway_external_ip";
+
+    //Name of WAN status sensor in home assistant
+    constexpr char WIFI_HOMEASSISTANT_ROUTER_WAN_STATUS[] = "sensor.r7000p_gateway_wan_status";
+
+    //Enable this if you have the ookla speedtest module on home assistant
+    constexpr bool WIFI_HOMEASSISTANT_SPEEDTEST = true;
+
+    //Name of the entity id string used by the speedtest upload sensor in home
+    //assistant
+    constexpr char WIFI_HOMEASSISTANT_SPEEDTEST_UP[] = "sensor.speedtest_upload";
+
+    //Name of the entity id string used by the speedtest download sensor in home
+    //assistant
+    constexpr char WIFI_HOMEASSISTANT_SPEEDTEST_DOWN[] = "sensor.speedtest_download";
+
+    //Name of the entity id string used by the speedtest ping sensor in home
+    //assistant
+    constexpr char WIFI_HOMEASSISTANT_SPEEDTEST_PING[] = "sensor.speedtest_ping";
 }