#include "SD_Card.h"
#include "Display_ST7789.h"
#include "LVGL_Driver.h"
#include "LVGL_Example.h"

#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>

// -------- WIFI --------
const char* ssid = "iPhoneBENI";
const char* password = "FabAcademy26";
const char* serverURL = "http://172.20.10.3/data";

// -------- LVGL OBJECTS --------
lv_obj_t *titleLabel;
lv_obj_t *tempLabel;
lv_obj_t *humLabel;
lv_obj_t *statusLabel;

unsigned long lastUpdate = 0;

// -------- UI --------
void createUI() {
  lv_obj_clean(lv_scr_act());   // 🔥 limpia pantalla (quita demo)

  lv_obj_set_style_bg_color(lv_scr_act(), lv_color_white(), 0);

  titleLabel = lv_label_create(lv_scr_act());
  lv_label_set_text(titleLabel, "Sensor data");
  lv_obj_set_style_text_font(titleLabel, &lv_font_montserrat_16, 0);
  lv_obj_align(titleLabel, LV_ALIGN_TOP_MID, 0, 20);

  tempLabel = lv_label_create(lv_scr_act());
  lv_label_set_text(tempLabel, "Temp: --.- C");
  lv_obj_set_style_text_font(tempLabel, &lv_font_montserrat_16, 0);
  lv_obj_align(tempLabel, LV_ALIGN_CENTER, 0, -20);

  humLabel = lv_label_create(lv_scr_act());
  lv_label_set_text(humLabel, "Hum: --.- %");
  lv_obj_set_style_text_font(humLabel, &lv_font_montserrat_16, 0);
  lv_obj_align(humLabel, LV_ALIGN_CENTER, 0, 20);

  statusLabel = lv_label_create(lv_scr_act());
  lv_label_set_text(statusLabel, "Connecting...");
  lv_obj_set_style_text_font(statusLabel, &lv_font_montserrat_12, 0);
  lv_obj_align(statusLabel, LV_ALIGN_BOTTOM_MID, 0, -15);
}

// -------- WIFI --------
void connectWiFi() {
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  Serial.print("Connecting to Wi-Fi");
  lv_label_set_text(statusLabel, "Connecting WiFi...");

  int attempts = 0;

  while (WiFi.status() != WL_CONNECTED && attempts < 40) {
    delay(500);
    Serial.print(".");
    attempts++;
    Timer_Loop(); // mantiene LVGL activo
  }

  Serial.println();

  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("Wi-Fi connected");
    Serial.print("IP: ");
    Serial.println(WiFi.localIP());

    lv_label_set_text(statusLabel, "WiFi OK");
  } else {
    Serial.println("Wi-Fi failed");
    lv_label_set_text(statusLabel, "WiFi FAIL");
  }
}

// -------- HTTP + JSON --------
void updateData() {
  if (WiFi.status() != WL_CONNECTED) {
    lv_label_set_text(statusLabel, "No WiFi");
    return;
  }

  HTTPClient http;
  http.begin(serverURL);

  int httpCode = http.GET();

  if (httpCode == 200) {
    String payload = http.getString();

    Serial.print("JSON: ");
    Serial.println(payload);

    StaticJsonDocument<200> doc;
    DeserializationError error = deserializeJson(doc, payload);

    if (!error) {
      float temp = doc["temperature"];
      float hum  = doc["humidity"];

      String tempText = "Temp: " + String(temp,1) + " C";
      String humText  = "Hum: " + String(hum,1) + " %";

      lv_label_set_text(tempLabel, tempText.c_str());
      lv_label_set_text(humLabel, humText.c_str());
      lv_label_set_text(statusLabel, "Updated");

      Serial.println(tempText);
      Serial.println(humText);
      Serial.println("------------------");
    } else {
      Serial.println("JSON error");
      lv_label_set_text(statusLabel, "JSON error");
    }
  } else {
    Serial.print("HTTP error: ");
    Serial.println(httpCode);
    lv_label_set_text(statusLabel, "HTTP error");
  }

  http.end();
}

// -------- SETUP --------
void setup() {
  Serial.begin(115200);
  delay(2000);

  Serial.println("Booting...");

  Flash_test();
  LCD_Init();
  Lvgl_Init();
  SD_Init();

  createUI();
  connectWiFi();
}

// -------- LOOP --------
void loop() {
  Timer_Loop();

  if (millis() - lastUpdate > 2000) {
    updateData();
    lastUpdate = millis();
  }

  delay(5);
}