#include <SimpleDHT.h>

#include <TM1637Display.h>

#include <DS1302.h>

// ------- 感測器/顯示器腳位定義 -------

#define DHT11_PIN 2

#define TM1_CLK 3

#define TM1_DIO 4

#define TM2_CLK 5

#define TM2_DIO 6

#define BUTTON_PIN 7

#define BUZZER_PIN 8

// ------- RTC DS1302 腳位定義 -------

DS1302 rtc(11, 10, 9);  // CE, IO, SCLK

// ------- 物件初始化 -------

SimpleDHT11 dht11(DHT11_PIN);

TM1637Display displayDate(TM1_CLK, TM1_DIO);

TM1637Display displayTime(TM2_CLK, TM2_DIO);

// ------- 切換狀態 -------

bool showTemperature = false;

unsigned long lastSwitchTime = 0;

const unsigned long displayTempDuration = 5000;

void setup() {

  Serial.begin(9600);

  pinMode(BUTTON_PIN, INPUT_PULLUP);

  pinMode(BUZZER_PIN, OUTPUT);

  displayDate.setBrightness(5);

  displayTime.setBrightness(5);

  rtc.halt(false);

  rtc.writeProtect(false);

  Serial.println("系統啟動完成");

  Serial.println("若需設定時間，請輸入格式：T:HH,MM,SS,WEEKDAY,DAY,MONTH,YEAR");

}

void loop() {

  static bool lastButtonState = HIGH;

  bool currentButtonState = digitalRead(BUTTON_PIN);

  // 讀取按鈕切換顯示模式

  if (lastButtonState == HIGH && currentButtonState == LOW) {

    showTemperature = true;

    lastSwitchTime = millis();

    beep(1);

  }

  lastButtonState = currentButtonState;

  // 顯示模式切換與顯示內容

  if (showTemperature) {

    showTempAndFeelsLike();

    if (millis() - lastSwitchTime >= displayTempDuration) {

      showTemperature = false;

    }

  } else {

    showDateTime();

  }

  // 讀取 Serial 設定時間

  if (Serial.available()) {

    String input = Serial.readStringUntil('\n');

    input.trim();

    if (input.startsWith("T:")) {

      setTimeFromSerial(input);

    }

  }

  delay(500);

}

// ------- 顯示日期與時間 -------

void showDateTime() {

  Time t = rtc.time();

  int dateVal = t.mon * 100 + t.date;

  int timeVal = t.hr * 100 + t.min;

  displayDate.showNumberDecEx(dateVal, 0x40, true); // MM.DD

  displayTime.showNumberDecEx(timeVal, 0x40, true); // HH:MM

  Serial.print("日期："); Serial.print(t.mon); Serial.print("/"); Serial.print(t.date);

  Serial.print(" 時間："); Serial.print(t.hr); Serial.print(":"); Serial.println(t.min);

}

// ------- 顯示溫度與體感溫度 -------

void showTempAndFeelsLike() {

  byte temperature = 0;

  byte humidity = 0;

  if (dht11.read(&temperature, &humidity, NULL) != SimpleDHTErrSuccess) {

    Serial.println("讀取 DHT11 失敗");

    return;

  }

  int feelsLike = temperature - ((100 - humidity) / 5);  // 簡易體感溫度計算

  displayDate.showNumberDec(temperature, true);

  displayTime.showNumberDec(feelsLike, true);

  Serial.print("溫度："); Serial.print((int)temperature);

  Serial.print("°C 體感："); Serial.print((int)feelsLike); Serial.println("°C");

}

// ------- 蜂鳴器提示音 -------

void beep(int times) {

  for (int i = 0; i < times; i++) {

    tone(BUZZER_PIN, 1000);

    delay(100);

    noTone(BUZZER_PIN);

    delay(100);

  }

}

// ------- 解析序列字串並設定時間 -------

void setTimeFromSerial(String input) {

  input.remove(0, 2); // 移除 "T:"

  int hh, mm, ss, wd, dd, mo, yy;

  int parsed = sscanf(input.c_str(), "%d,%d,%d,%d,%d,%d,%d", &hh, &mm, &ss, &wd, &dd, &mo, &yy);

  if (parsed == 7) {

    Time newTime(ss, mm, hh, wd, dd, mo, yy);

    rtc.time(newTime);

    Serial.println("✔ 時間已更新");

    beep(2);

  } else {

    Serial.println("❌ 格式錯誤！請使用：T:HH,MM,SS,WEEKDAY,DAY,MONTH,YEAR");

    beep(3);

  }

}