#include <ESP8266WiFi.h>
#include <EEPROM.h>

// From https://github.com/DaKaZ/esp8266-restclient
#include "RestClient.h"

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BMP280.h>

const char* ssid = "FLRLAN";
const char* password = "XXXXXX";

const char * host = "apis.lab.inf3.xyz";
const int httpsPort = 443;
const char * path = "/esp8266/sensors";

#define BMP_SCK 13
#define BMP_MISO 12
#define BMP_MOSI 11
#define BMP_CS 10

Adafruit_BMP280 bmp;

void setup() {
  Serial.begin(115200);
  delay(500);

  while (!bmp.begin()) {
    Serial.println("Could not find a valid BMP280 sensor, check wiring!");
    delay(100);
  }
  delay(1000);

  EEPROM.begin(512);

  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  int c = 0;
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
    c++;
    Serial.print(".");

    if (c > 100) {
      Serial.println();
      Serial.println("Unable to connect. Sleeping for 60 seconds before trying again.");
      int sleepTime = 60 * 1e6;
      ESP.deepSleep(sleepTime);
    }
  }
  Serial.println("");
  Serial.println("WiFi connected");
}

void loop() {

  float h = bmp.readPressure();
  float t = bmp.readTemperature();

  while (isnan(h) || isnan(t) || t > 100 || t < -100) {
    h = bmp.readPressure();
    t = bmp.readTemperature();
  }

  Serial.println("Got t=" + String(t) + " and h=" + String(h) + ".");

  String content = "{\n";
  content += "\"id\": \"" + WiFi.macAddress() + "\",\n";
  content += "\"name\": \"" + String(getNodeId()) + "\",\n";
  content += "\"temp\": " + String(t) + ",\n";
  content += "\"pressure\": " + String(h) + "\n";
  content += "}\n";

  Serial.println("Sending: " + content);

  String response = "";
  int statusCode = 0;

  while (statusCode < 100 || statusCode >= 500) {
    RestClient client = RestClient(host, httpsPort, 1);
    const char * contentArr = content.c_str();
    statusCode = client.post(path, contentArr, &response);

    Serial.println("Got response code: " + String(statusCode));
    Serial.println("Got response: " + response);

    if (statusCode < 100 || statusCode >= 500) {
      delay(5000);
    }
  }

  String sleepTimeStr;
  String nodeId;

  int sleepTime = sleepTimeStr.toInt() * 1e6;
  if (sleepTime < 60 * 1e6) {
    sleepTime = 15 * 60 * 1e6;
  }

  Serial.print("Going to sleep for ");
  Serial.print(sleepTime);
  Serial.println(" nanoseconds");

  ESP.deepSleep(sleepTime);
  /*
    } else if (value == REQ_SET) {
    setNodeId(parameter);
    }
  */
}

#define LENGTH_ID 10

void setNodeId(String value) {
  const char* c = value.c_str();
  size_t addr = 0x0;

  int givenLength = strlen(c);
  if (givenLength >= LENGTH_ID) {
    givenLength = LENGTH_ID;
  }

  size_t i = 0;
  for (; i < givenLength; i++) {
    EEPROM.write(addr + i, (uint8_t) c[i]);
  }
  for (; i < LENGTH_ID; i++) {
    EEPROM.write(addr + i, 0);
  }
  EEPROM.commit();
}

char* getNodeId() {
  size_t addr = 0x0;

  char* eepromId = new char[LENGTH_ID];
  for (size_t i = 0; i < LENGTH_ID; i++) {
    uint8_t temp = EEPROM.read(addr + i);
    eepromId[i] = temp;
  }

  return eepromId;

}