#include <Arduino.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <HTTPClient.h>
#include <time.h>
#include "secrets.h"


void connectToWifi() {
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print('.');
    delay(1000);
  }
  Serial.println(WiFi.localIP());
}

void setup() {
  Serial.begin(115200);
  Serial.println();

  connectToWifi();
}

void loop() {
  WiFiClientSecure *client = new WiFiClientSecure;
  if (client) {
    client->setCACert(rootCACertificate);
    HTTPClient https;

    Serial.print("[HTTPS] begin...\n");
    if (https.begin(*client, "https://arpy8-drishti-api.hf.space/update-data")) {  // HTTPS
      Serial.print("[HTTPS] POST...\n");

      https.addHeader("Content-Type", "application/json");
      https.addHeader("Drishti-Auth-Key", "2907");

      float tc = random(33, 35);
      float hu = random(28, 31);
      int mt = map(random(350, 370), 0, 1023, 0, 100);
      
      time_t now;
      time(&now);
      
      String httpRequestData = "{\"time\":\"" + String(now) + "\",\"humidity\":\"" + String(hu) + "\",\"temperature\":\"" + String(tc) + "\",\"soil_moisture\":\"" + String(mt) + "\",\"uuid\":\"" + UUID + "\"}";

      int httpCode = https.POST(httpRequestData);
      Serial.print("HTTP Response code: "); 
      Serial.println(String(httpCode) + ": " + httpRequestData);

      if (httpCode > 0) {
        Serial.printf("[HTTPS] POST... code: %d\n", httpCode);
        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
          String payload = https.getString();
          Serial.println(payload);
        }
      }
      else {
        Serial.printf("[HTTPS] POST... failed, error: %s\n", https.errorToString(httpCode).c_str());
      }
      https.end();
    }
    else {
      Serial.println("[HTTPS] Unable to begin connection");
    }
    delete client;
  }
  else {
    Serial.printf("[HTTPS] Unable to create client\n");
  }
  Serial.println();
  Serial.println("Waiting 5sec before the next round...");
  delay(5000);
}