/*
  Change these lines as per yours:
    const char *ssid = "REPLACE_WITH_YOUR_SSID";         // replace with your SSID
    const char *password = "REPLACE_WITH_YOUR_PASSWORD"; // replace with your Password
    const uint8_t servoPin = D4;                         // replace with servo pin

  Parts list:
  
  NodeMCU :
  https://amzn.to/397GzNe
  
  Download ESPAsyncWebServer library :
  https://github.com/me-no-dev/ESPAsyncWebServer/archive/master.zip

  Download ESPAsyncTCP library :
  https://github.com/me-no-dev/ESPAsyncTCP/archive/master.zip

  Download ESP8266 Filesystem Uploader :
  https://github.com/esp8266/arduino-esp8266fs-plugin/releases/download/0.5.0/ESP8266FS-0.5.0.zip
  
*/

// Import libraries 
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <AccelStepper.h>
#include <string> 

const int stepsPerRevolution = 2048;  // change this to fit the number of steps per revolution
bool initializing = false;

// ULN2003 Motor Driver Pins
#define IN1 5
#define IN2 4
#define IN3 14
#define IN4 12

// initialize the stepper library
AccelStepper stepper(AccelStepper::HALF4WIRE, IN1, IN3, IN2, IN4);

const char *ssid = "TARDIS";         // replace with your SSID
const char *password = "EvangelionUnit-01"; // replace with your Password

// Create Server instance
AsyncWebServer server(80);
void setup()
{
  // Attach Servo, start SPIFFS and Connect to WiFi
  Serial.begin(115200);
  stepper.setMaxSpeed(3000);
  stepper.setAcceleration(2500);
  // set target position
  stepper.moveTo(0);

  
  if (!SPIFFS.begin())
  {
    Serial.println("An Error has occurred while mounting SPIFFS");
    return;
  }
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi..");
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(1000);
    Serial.print(".");
  }
  Serial.print("\nConnected to the WiFi network: ");
  Serial.print(WiFi.SSID());
  Serial.print("IP address:");
  Serial.print(WiFi.localIP());
  // Send home page from SPIFFS
  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
    Serial.println("Send index.html.");
    request->send(SPIFFS, "/index.html", "text/html");
  });
  
    
 server.on("/setTemperature", HTTP_POST, [](AsyncWebServerRequest *request) {
    int rotations = request->arg("rotations").toInt();
    double multiplier = 0.2; // TODO: find me out
    stepper.moveTo((multiplier * rotations) * stepsPerRevolution);
    request->send(200);
  });


 //rotate a looot back to 90 F, as we cant go lower, so we over rotate then mark that as 0 POSITION
 server.on("/initialize", HTTP_POST, [](AsyncWebServerRequest *request) {
    initializing = true;
    stepper.moveTo(-10 * stepsPerRevolution);
    request->send(200);
  });
 
  
  // Send Favicon 
  server.serveStatic("/favicon.ico", SPIFFS, "/favicon.ico");
  // Begin Server
  server.begin();
}



void loop()
{
  if (stepper.distanceToGo() == 0 && initializing){
        initializing = false;
        stepper.stop();
        stepper.setCurrentPosition(0);
  }
  
  Serial.print("Current Position: ");
  Serial.println(stepper.currentPosition());
  stepper.run();
}