/*

 WebServer to use as replacement for Sony RM-D27M to control Sony MiniDisc decks.

 Based on the the following sketches:
 - SimpleWifiServer example
 - SD_Test
 - IRremote/SendDemo


 If the IP address of your shield is yourAddress:
 http://yourAddress/H turns the LED on
 http://yourAddress/L turns it off



 Circuit:
 * LED attached to pin 13 (optional)
 * IR Transmitter attached to pin 4 (connect to 5v or 3v3)
 * SD-Module to load HTML and CSS from SD-card

 developed for the ESP32vn IoT Uni board 2024
 
 */

#include <WiFi.h>
#include <IRremote.hpp>
#include "secrets.h"
#include "defines.h"

WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);  // set the LED pin mode

  delay(10);

  // We start by connecting to a WiFi network

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(SSID);

  WiFi.begin(SSID, PASSWORD);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  IrSender.begin(IR_SEND_PIN, ENABLE_LED_FEEDBACK, USE_DEFAULT_FEEDBACK_LED_PIN);  // Specify send pin and enable feedback LED at default feedback LED pin
  Serial.println();
  Serial.print(F("Send IR signals at pin "));
  Serial.println(IR_SEND_PIN);

  Serial.println();
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  server.begin();
}



void loop() {
  WiFiClient client = server.available();  // listen for incoming clients

  if (client) {                     // if you get a client,
    Serial.println("New Client.");  // print a message out the serial port
    String currentLine = "";        // make a String to hold incoming data from the client
    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
        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) {
            // 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();

            // the content of the HTTP response follows the header:
            client.print("Click <a href=\"/H\">here</a> to turn the LED on pin 13 on.<br>");
            client.print("Click <a href=\"/L\">here</a> to turn the LED on pin 13 off.<br>");
            client.print("<a href=\"/power\">power</a><br>");
            client.print("<a href=\"/play\">play</a><br>");
            client.print("<a href=\"/pause\">pause</a><br>");
            client.print("<a href=\"/stop\">stop</a><br>");
            client.print("<a href=\"/prev\">previous track</a><br>");
            client.print("<a href=\"/next\">next track</a><br>");
            client.print("<form action=\"/api/control-deck\" method=\"post\"><button name=\"control\" type=\"submit\" value=\"play\">play</button></form><br>");
            client.print("<form action=\"/api/control-deck\" method=\"get\"><input name=\"textinput\" type=\"text\" /><button type=\"submit\">send</button></form><br>");

            // The HTTP response ends with another blank line:
            client.println();
            // break out of the while loop:
            break;
          } else {  // if you got a newline, then clear currentLine:
            currentLine = "";
          }
        } else if (c != '\r') {  // if you got anything else but a carriage return character,
          currentLine += c;      // add it to the end of the currentLine
        }

        // Check to see if the client request was "GET /H" or "GET /L":
        if (currentLine.endsWith("GET /H")) {
          digitalWrite(LED_PIN, HIGH);  // GET /H turns the LED on
        }
        if (currentLine.endsWith("GET /L")) {
          digitalWrite(LED_PIN, LOW);  // GET /L turns the LED off
        }
        if (currentLine.endsWith("GET /power")) {
          sendButton(POWER);
        }
        if (currentLine.endsWith("GET /play")) {
          sendButton(PLAY);
        }
        if (currentLine.endsWith("GET /pause")) {
          sendButton(PAUSE);
        }
        if (currentLine.endsWith("GET /stop")) {
          sendButton(STOP);
        }
        if (currentLine.endsWith("GET /prev")) {
          sendButton(PREV);
        }
        if (currentLine.endsWith("GET /next")) {
          sendButton(NEXT);
        }
        if (currentLine.endsWith("POST /api/control-deck")) {

          Serial.println("POST");
          char c = client.read();
          Serial.print(c);
        }
      }
    }
    // close the connection:
    client.stop();
    Serial.println("Client Disconnected.");
  }
}

void sendButton(int command)
{
  Serial.println(command);
  Serial.flush();
  IrSender.sendSony(0xF, command, 2, 12);
}