PUT volume for Doorbell-Speaker

doorbell/Doorbell-Speaker.ino

@@ -27,6 +27,7 @@ const char* password = "5275274365464843";
 WiFiServer server(80); // Set web server port number to 80
 
 String header;
+String body;
 const int ledPin = 26;
 
 int charCount = 0;
@@ -88,7 +89,6 @@ void setupServer() {
 
 void loop() {
   if ((WiFi.status() == WL_CONNECTED)) {
-
     WiFiClient client = server.available();   // Listen for incoming clients
   
     if (client) {
@@ -96,22 +96,77 @@ void loop() {
       while (client.connected()) {            // loop while the client's connected
         if (client.available()) {             // if there's bytes to read from the client,
           char c = client.read();             // read a byte, then
-          Serial.write(c);                    // print it out the serial monitor
+          //Serial.write(c);                    // print it out the serial monitor
           header += c;
           if (c == '\n') {                    // if the byte is a newline character
             // if the current line is blank, you got two newline characters in a row.
             // that's the end of the client HTTP request, so send a response:
             if (currentLine.length() == 0) {
+              if (header.indexOf("GET /volume") >= 0) {
+                client.println("HTTP/1.1 200 OK");
+                client.println("Content-type: application/json; charset=utf-8");
+                client.println("Connection: close");
+                client.println();
+                client.println("{");
+                client.print("  \"value\": ");
+                client.println(volume);
+                client.println("}");
+                break;
+              }
+              else if (header.indexOf("PUT /volume") >= 0) {
+                while (client.connected()) {
+                  char c = client.read();
+                  body += c;
+                  if (c == '}') {
+                    break;
+                  }
+                }
+                
+                String str1 = body;
+                str1 = str1.substring(str1.indexOf("value"));
+                str1 = str1.substring(str1.indexOf(":") + 1);
+                while (str1.length() > 0 && str1.startsWith(" ")) {
+                  str1 = str1.substring(1);
+                }
+
+                int ix = 0;
+                while (isDigit(str1.charAt(ix))) {
+                  ix++;
+                }
+
+                if (ix > 0) {
+                  volume = str1.substring(0, ix).toInt();
+                  if (volume < 0) {
+                    volume = 0;
+                  }
+                  else if (volume > 30) {
+                    volume = 30;
+                  }
+                  
+                  dfPlayer.volume(volume);
+                  Serial.print("Volume set to ");
+                  Serial.println(volume);
+                  
+                  client.println("HTTP/1.1 200 OK");
+                }
+                else {
+                  client.println("HTTP/1.1 400 Bad Request");                  
+                }
+                
+                client.println("Connection: close");
+                break;
+              }
+              
               // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
               // and a content-type so the client knows what's coming, then a blank line:
               client.println("HTTP/1.1 200 OK");
-              client.println("Content-type:text/html");
+              client.println("Content-type: text/html; charset=utf-8");
               client.println("Connection: close");
               client.println();
               
               // turns the GPIOs on and off
               if (header.indexOf("GET /bell/on") >= 0) {
-                dfPlayer.play(1);  //Play the first mp3
+                dfPlayer.play(1);  // play the first mp3
               }
               else if (header.indexOf("GET /volume/") >= 0) { // yes, I know this is not RESTful
                 String str1 = header;
@@ -126,7 +181,7 @@ void loop() {
                 }
                 
                 dfPlayer.volume(volume);
-                Serial.print("volume set to ");
+                Serial.print("Volume set to ");
                 Serial.println(volume);
               }
               
@@ -159,6 +214,7 @@ void loop() {
       }
       // Clear the header variable
       header = "";
+      body = "";
       // Close the connection
       client.stop();
       Serial.println("Client disconnected");