#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <WiFi.h>
#include <LiquidCrystal_I2C.h> 
#include <Wire.h>

#include "ThingSpeak.h" // always include thingspeak header file after other header files and custom macros
#define WIFI_SSID "Wokwi-GUEST"   // replace MySSID with your WiFi network name
#define WIFI_PASSWORD ""  // replace MyPassword with your WiFi password
#define WIFI_CHANNEL 6
#define SECRET_CH_ID 2350557     // replace 0000000 with your channel number
#define SECRET_WRITE_APIKEY "7RCP9BJ1ODDPQPD4"   // replace XYZ with your channel write API Key
#include "DHTesp.h"

#define SCREEN_WIDTH 128 // OLED 寬度像素
#define SCREEN_HEIGHT 64 // OLED 高度像素

#include "DHTesp.h"
DHTesp dhtSensor;
const int DHT_PIN = 17;
WiFiClient  client;
unsigned long myChannelNumber = SECRET_CH_ID;
const char * myWriteAPIKey = SECRET_WRITE_APIKEY;
 
#include "RTClib.h"
RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

LiquidCrystal_I2C lcd1(0x27,16,2);

int number = 0;

static const uint8_t degreeIcon[] PROGMEM = {
   B0000000,
  B0001100,
  B0010010,
  B0010010,
  B0010010,
  B0001100,
  B0000000
};

void setup() {
  Serial.begin(115200);  //Initialize serial
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo native USB port only
  }
  WiFi.mode(WIFI_STA);  
  ThingSpeak.begin(client);  // Initialize ThingSpeak
  Serial.begin(115200);

  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }
 
  
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }
  delay(1000);
  
 Serial.begin(9600);
  display.clearDisplay();
  // 偵測是否安裝好OLED了
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // 一般1306 OLED的位址都是0x3C
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
   display.setTextColor(WHITE); 
  display.clearDisplay(); // 清除畫面
 // testdrawstyles();    // 測試文字
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  delay(1000);

  

}


void loop() {


  TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  display.clearDisplay();
  display.setTextSize(1.5);          // 設定文字大小
  display.setTextColor(WHITE);         // 1:OLED預設的顏色(這個會依該OLED的顏色來決定)
  display.setCursor(0,30);          // 設定起始座標
  display.print("Temperature=");     // 要顯示的字串
  display.print(String(data.temperature, 2));
  //display.drawCircle(108,1,1,WHITE);
    display.drawBitmap(display.getCursorX(), display.getCursorY() - 1.5, degreeIcon, 7, 7, SSD1306_WHITE);
  display.setCursor(display.getCursorX() + 9, display.getCursorY());
  
  display.print("C");

  display.setCursor(0,40);        // 設定起始座標
  display.print("Humidity=");        // 要顯示的字串
  display.print(String(data.humidity, 2));
  display.print("%");
  display.display();             // 要有這行才會把文字顯示出來 
  
  
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, WIFI_CHANNEL);
  Serial.print("Connecting to WiFi ");
  Serial.print(WIFI_SSID);
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
 
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
 
  // Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
  // pieces of information in a channel.  Here, we write to field 1.
  delay(2000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
  int x = ThingSpeak.writeField(myChannelNumber, 1, number, myWriteAPIKey);
  if(x == 200){
    Serial.println("Channel update successful.");
  }
  else{
    Serial.println("Problem updating channel. HTTP error code " + String(x));
  }
  // change the value
  number++;
  if(number > 99){
    number = 0;
  }
  delay(1000);
}