#include <ESP8266WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>
#include <ESP8266HTTPClient.h>

#define D8    15
#define D7    13
#define DHTTYPE DHT11 // DHT 11
#define DHTPIN 13 // leitura 

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

#define OLED_RESET     -1   // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C // If not work please scan the bus
#define OLED_SDA 14         // D6
#define OLED_SCL 12         // D5

DHT dht(DHTPIN, DHTTYPE, 150);
Adafruit_SSD1306 *display;
HTTPClient http;
WiFiClient client;
#define D7    13 // dht11
#define D6    12 //push
#define D3    0 //LED

const char *ssid     = "TP-Link_688A";
const char *password = "debarbamiguel";

String BASE_URL = "http://projeto6.migueldebarba.com.br/miguelmiguel/json.php";
String payload;
// ############# HTTP REQUEST ################ //
void httpRequest(String path)
{
  String payload = makeRequest(path);
  if (!payload) {return;}
}

String makeRequest(String path)
{
  http.begin(client, BASE_URL);
  int httpCode = http.GET();                                  //Send the request
    if (httpCode > 0) { //Check the returning code
      payload = http.getString();   //Get the request response payload
    }
  if (httpCode < 0) {
    Serial.println("request error - " + httpCode);
    return "";
  }
  if (httpCode != HTTP_CODE_OK) {return "";}
  String response =  http.getString();
  http.end();
  return response;
}

void EnviaServer(String postData){
    digitalWrite(D3,HIGH);
    HTTPClient http;
    http.begin(client,"http://modulo4.migueldebarba.com.br/insertleitura.php");
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");
    int httpCode = http.POST(postData);
    String payload = http.getString();
    Serial.println("httpCode:"+String(httpCode));
    Serial.println("payload:"+payload);
    http.end();
    delay(500);
    digitalWrite(D3,LOW);
  }

void setup() {
  pinMode(D8, INPUT_PULLUP);
  display = new Adafruit_SSD1306(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
  Wire.begin(OLED_SDA, OLED_SCL);
  display->begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);  
  display->setTextSize(2);
  display->setTextColor(SSD1306_WHITE);

  Serial.begin(115200);
  
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
    Serial.print("MAC: ");    Serial.println(WiFi.macAddress());     
  display->clearDisplay();
  display->setCursor(0, 0);
  display->println("IFSC - MOD IV");  
  display->println(ssid);  
  display->display();  
  delay(5000);
  
}

void loop() {
  dht.begin();
  float temperatura=dht.readTemperature( ) ;
  float umidade = dht.readHumidity();  
  Serial.print("Temp ");
  Serial.println(temperatura);
  Serial.print("Umidade ");
  Serial.println(umidade);

  display->clearDisplay();
  display->setCursor(0, 0);
  display->println("Temp");  
  display->println(temperatura);  
  display->display();  
  delay(1000);
  display->clearDisplay();
  display->setCursor(0, 0);
  display->println("Um%");  
  display->println(umidade);  
  display->display();  

    if (digitalRead(D8)==HIGH){
    String from="esp8266";
    String postData = 
    "idmac="+String(WiFi.macAddress())
    +"&from="+String(from)
    +"&umidade="+String(umidade)
    +"&temperatura="+String(temperatura);
    EnviaServer(postData); 
    display->clearDisplay();
    display->setCursor(0, 0);
    display->println("Gravando BD");  
    display->display();  
    delay(1000);

    }

  delay(1000);
}