added getData function

Author: pxsty0

src/PxServ.cpp

@@ -54,3 +54,62 @@ PxServ::Callback PxServ::setData(String key, String value)
     delete client;
     return callback;
 }
+PxServ::Callback PxServ::getData(String key)
+{
+    WiFiClientSecure *client = new WiFiClientSecure;
+    Callback callback;
+
+    callback.status = -1;
+    callback.message = "failed to send request";
+    callback.data = "";
+
+    if (client)
+    {
+        client->setInsecure();
+
+        HTTPClient https;
+
+        if (https.begin(*client, "https://api.pxserv.net/database/getData"))
+        {
+            https.addHeader("Content-Type", "application/json");
+
+            JSONVar body;
+
+            body["key"] = key;
+            body["apiKey"] = PxServ::_apiKey;
+
+            int httpCode = https.POST(JSON.stringify(body));
+            if (httpCode > 0)
+            {
+
+                String payload = https.getString();
+                JSONVar result = JSON.parse(payload);
+
+                if (JSON.typeof(result) != "object")
+                {
+                    callback.status = 400;
+                    callback.message = "Response format not appropriate";
+                }
+                else
+                {
+                    int status = result["status"];
+                    String message = result["message"];
+
+                    if (status == 200)
+                    {
+                        String value = result["data"]["value"];
+                        callback.data = value;
+                    }
+
+                    callback.status = status;
+                    callback.message = message;
+                }
+
+                https.end();
+            }
+        }
+    }
+
+    delete client;
+    return callback;
+}

src/PxServ.h

@@ -21,6 +21,7 @@ class PxServ
 
     PxServ(String apiKey);
     Callback setData(String key, String value);
+    Callback getData(String key);
 
 private:
     String _apiKey;