#include <WiFi.h>
#include <time.h>
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
// #include <SPI.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
// #include <ESPAsyncWebServer.h>

#include "font.h"

#define NTP_SERVER "europe.pool.ntp.org"
#define UTC_OFFSET 3600
#define UTC_OFFSET_DST 3600

#define ARDUINOJSON_DECODE_UNICODE 1

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
// #define HARDWARE_TYPE MD_MAX72XX::FC16_HW
// #define HARDWARE_TYPE MD_MAX72XX::GENERIC_HW
// #define HARDWARE_TYPE MD_MAX72XX::ICSTATION_HW

// Define the number of devices we have in the chain and the hardware interface
#define MAX_DEVICES 4
#define CLK_PIN 18
#define DATA_PIN 23
#define CS_PIN 5

// HARDWARE SPI
MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
// SOFTWARE SPI
// MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// const char* ssid = "girusnet";
// const char* pass = "gnet9419";

char cas[10];
char date[30];
char weather[40];
char meniny[40];
char clouds[20];

uint8_t scrollSpeed = 30;  // default frame delay value
textEffect_t scrollEffect = PA_NO_EFFECT;
//  PA_SCROLL_LEFT PA_NO_EFFECT;
textPosition_t scrollAlign = PA_CENTER;
uint16_t scrollPause = 0;  // in milliseconds
static uint32_t lastTime = 0;
uint32_t interval = 10000;
uint32_t led = 7;
static uint32_t dataTime = 0;
static uint16_t display = 0;  // current display mode
static uint16_t msg = 0;      // current msg mode

// Global message buffers shared by Serial and Scrolling functions
#define BUF_SIZE 100
char curMessage[BUF_SIZE] = { "clock" };

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

  P.begin();
  loadFont();
  P.setIntensity(15);
  // P.setInvert(true);
  // P.setCharSpacing(0);

  Serial.println("Connecting to WiFi");
  // while (!makeWLAN()) {
  //   Serial.println("Cannot connect :(");
  //   delay(1000);
  // }

  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print("#");
    delay(250);
  }
  
  Serial.println("Connected");

  Serial.println("Updating time...");
  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);

  Serial.print("\n[Parola Matrix Display Clock]\n");
  P.displayText(curMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);

  // InitServer();
  getData();
}

void loop() {
  setLocalTime();

  P.displayAnimate();
  if (P.getZoneStatus(0)) {
    switch (display) {
      case 0:  // Welcome
        P.displayClear();
        P.setTextEffect(0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
        strcpy(curMessage, "Matrix Display Clock");
        display++;
        break;

      case 1:
        P.displayClear();
        P.setTextEffect(0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);

        switch (msg) {
          case 0:  // Welcome
            strcpy(curMessage, date);
            msg++;
            break;

          case 1:  // Welcome
            strcpy(curMessage, meniny);
            msg++;
            break;

          case 2:  // Welcome
            strcpy(curMessage, weather);
            msg++;
            break;

          case 3:  // Welcome
            strcpy(curMessage, clouds);
            msg++;
            break;
        }

        display++;
        break;

      default:  // Clock
        P.setTextEffect(0, PA_NO_EFFECT, PA_NO_EFFECT);
        strcpy(curMessage, cas);
        display++;
        break;
    }
    P.displayReset(0);
  }

  if (msg > 3) msg = 0;
  // Serial.println(msg);

  if (millis() - lastTime > interval) {
    if (display > 2) display = 1;
    lastTime = millis();
    P.displayReset(0);
  }

  if (millis() - dataTime > 20 * 60 * 1000) {
    dataTime = millis();
    getData();
  }
}

void setLocalTime() {
  struct tm ti;
  if (!getLocalTime(&ti)) {
    Serial.println("Connection Error");
    return;
  }

  static const char wday_name[][9] = {
    "Nedela", "Pondelok", "Utorok", "Streda", "Stvrtok", "Piatok", "Sobota"
  };
  static const char mon_name[][10] = {
    "Januar", "Februar", "Marec", "April", "Maj", "Jun",
    "Jul", "August", "September", "Oktober", "November", "December"
  };

  // Serial.println(&ti, "%H:%M:%S %d.%m.%Y  %Z");
  // sprintf(cas, "%s %i.%s %.2i:%.2i", wday_name[ti.tm_wday], ti.tm_mday, mon_name[ti.tm_mon], ti.tm_hour, ti.tm_min);
  sprintf(date, "%s %i.%s %i", wday_name[ti.tm_wday], ti.tm_mday, mon_name[ti.tm_mon], ti.tm_year + 1900);
  if (ti.tm_sec % 2 == 0) {
    sprintf(cas, "%.2i:%.2i.%.2i", ti.tm_hour, ti.tm_min, ti.tm_sec);
  } else {
    sprintf(cas, "%.2i %.2i.%.2i", ti.tm_hour, ti.tm_min, ti.tm_sec);
  }
  // Serial.println(cas);
}

void getData() {
  HTTPClient http;
  http.begin("http://girus.5xs.sk/jsonbox.php?lat=49.29&lon=21.26");  //HTTP
  int httpCode = http.GET();                                          // httpCode will be negative on error
  if (httpCode > 0) {                                                 // HTTP header has been send and Server response header has been handled
    // Serial.printf("[HTTP] GET... code: %d\n", httpCode);              // file found at server

    if (httpCode == HTTP_CODE_OK) {
      String json = http.getString();
      Serial.println(json);

      StaticJsonDocument<20> obj;
      DeserializationError error = deserializeJson(obj, json);
      if (error) {
        Serial.println("DeserializationError");
        return;
      }

      String mes = obj["mes"];
      String poc = obj["poc"];
      float tep = obj["tep"];
      const char *mnn = "********************";
      mnn = obj["mnn"];
      String ob1 = obj["ob1"];

      sprintf(weather, "%s: %s %.1f $", mes, poc, tep);
      sprintf(meniny, "Meniny: %s", mnn);
      sprintf(clouds, "Oblacnost: %s", ob1);
    }
  } else {
    Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
  }
  http.end();
}

void loadFont() {
  P.addChar('0', nula);
  P.addChar('1', jeden);
  P.addChar('2', dva);
  P.addChar('3', tri);
  P.addChar('4', styri);
  P.addChar('5', pat);
  P.addChar('6', sest);
  P.addChar('7', sedem);
  P.addChar('8', osem);
  P.addChar('9', devet);
  P.addChar(':', dbtka);
  P.addChar('.', bdka);
  P.addChar(' ', spc);
  P.addChar('!', vnk);
  P.addChar('$', degC);
  P.addChar('&', degF);
}