#include <Arduino.h>
#include <ESPAsyncWebServer.h>
#include <HTTPClient.h>
#include <Adafruit_BMP085.h>
#include <DHT.h>
#include <DHT_U.h>
#include <FS.h>
#include "SPIFFS.h"

HTTPClient http;
Adafruit_BMP085 bmp;
unsigned long last_time = 0;
unsigned long timer_delay = 10000;

//here we use 4 of ESP32 to read data
#define DHTPIN 18
//our sensor is DHT11 type
#define DHTTYPE DHT11
//create an instance of DHT sensor
DHT dht(DHTPIN, DHTTYPE);

const char *ssid = "const";
const char *password = "const";
const char *serverName = "const";

// Keep this API Key value to be compatible with the PHP code provided in the project page.
// If you change the apiKeyValue value, the PHP file /post-esp-data.php also needs to have the same key
String apiKeyValue = "xxx";
AsyncWebServer server(80);

void setup()
{
    //----------------------------------------------------Serial
    Serial.begin(115200);
    Serial.println("\n");
    //----------------------------------------------------GPIO
    //----------------------------------------------------SPIFFS
    if (!SPIFFS.begin())
    {
        Serial.println("Erreur SPIFFS...");
        return;
    }
    File root = SPIFFS.open("/");
    File file = root.openNextFile();
    while (file)
    {
        Serial.print("File: ");
        Serial.println(file.name());
        file.close();
        file = root.openNextFile();
    }
    //----------------------------------------------------WIFI
    WiFi.begin(ssid, password);
    Serial.print("Tentative de connexion...");
    while (WiFi.status() != WL_CONNECTED)
    {
        Serial.print(".");
        delay(100);
    }
    Serial.println("\n");
    Serial.println("Connexion etablie!");
    Serial.print("Adresse IP: ");
    Serial.println(WiFi.localIP());
    //Serial.println("DHT11 sensor!");
    //call begin to start sensor
    //dht.begin();
    //use the functions which are supplied by library.
    //float humidite = dht.readHumidity();
    // Read temperature as Celsius (the default)
    //float temperature = dht.readTemperature();
    // Check if any reads failed and exit early (to try again).
    // if (isnan(humidite) || isnan(temperature)) {
    //   Serial.println("Failed to read from DHT sensor!");
    // return;
    // }
    dht.begin();
    //----------------------------------------------------SERVER
    server.on("/", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            request->send(SPIFFS, "/index.html", "text/html");
    });
    server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            request->send(SPIFFS, "/style.css", "text/css");
    });
    server.on("/script.js", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            request->send(SPIFFS, "/script.js", "text/javascript");
    });
    server.on("/script.js", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            request->send(SPIFFS, "/jquery-3.4.1.min.js", "text/javascript");
    });
    server.on("/lireTemperature", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            double val_temp = bmp.readTemperature();
            String Temperature = String(val_temp);
            request->send(200, "text/plain", Temperature);
    });
    server.on("/lireTemperatureDHT", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            double val_tempDHT = dht.readTemperature();
            String TemperatureDHT = String(val_tempDHT);
            request->send(200, "text/plain", TemperatureDHT);
    });
    server.on("/lirePression", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            int val_pression = bmp.readPressure() / 100;
            String Pression = String(val_pression);
            request->send(200, "text/plain", Pression);
    });
    server.on("/lireAltitude", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            int val_altitude = bmp.readAltitude(103200);
            String Altitude = String(val_altitude);
            request->send(200, "text/plain", Altitude);
    });
    server.on("/lireHumidite", HTTP_GET, [](AsyncWebServerRequest *request)
        {
            int val_humidite = dht.readHumidity();
            String Humidite = String(val_humidite);
            request->send(200, "text/plain", Humidite);
    });
    server.begin();
    Serial.println("Serveur actif!");
    if (!bmp.begin())
    {
        Serial.println("Could not find a valid BMP085/BMP180 sensor, check wiring!");
        while (1) {}
    }
}
void loop()
{
    //Send an HTTP POST request every 10 seconds
    if ((millis() - last_time) > timer_delay)
    {
        if (WiFi.status() == WL_CONNECTED)
        {
            http.begin(serverName);
            http.addHeader("Content-Type", "application/x-www-form-urlencoded");
            //Data to send with HTTP POST
            String httpRequestData = "api_key=" + apiKeyValue + "&humidity=" + dht.readHumidity()
                +
                "&temperature=" + dht.readTemperature() + "";
            // Send HTTP POST request
            int httpResponseCode = http.POST(httpRequestData);
            //http.addHeader("Content-Type", "application/json");
            // JSON data to send with HTTP POST
            //String httpRequestData = "{\"api_key\":\"" + my_Api_Key + "\",\"field1\":\"" + String(random(50)) + "\"}";
            // Send HTTP POST request
            // int httpResponseCode = http.POST(httpRequestData);
            Serial.print("HTTP Response code is: ");
            Serial.println(httpResponseCode);
            http.end();
        }
        else
        {
            Serial.println("WiFi is Disconnected!");
        }
    }
    last_time = millis();
}