# Reference: https://qiita.com/kotaproj/items/3b974425dfa2579afdbc

from machine import Pin,unique_id
import time
import usocket as socket
import ussl as ssl
import ubinascii
import urandom as random
import os
import wlan

# discord webhook url
discord_id = "1293767438089060493"
discord_token = "K35zLOGAprFdegbyl_18kc3UtzUM4rJaANp9nrLlAGtZjpDgnUeeoxxqa5I8tMB8EWAq"
HOST = "discord.com"       # 伺服器網址，不可動
API_URL = "/api/webhooks/" + discord_id + "/" + discord_token   # 連線對象URL, 不可動
PORT = 443

button_down = False
button_up = False
GPIO_PIN = 2  # 使用D4腳位

def randint(min, max):
  span = max - min + 1
  div = 0x3FFFFFFF // span
  offset = random.getrandbits(30) // div
  val = min + offset
  return val

# Function to handle button press interrupt (optional)
def button_press(pin):
  global button_down
  led2_pin.value(not led2_pin.value())
  button_down = True

def sendMessage(param_data):
  # 定義發送至伺服器的訊息內容
  message_str = "POST " + API_URL + " HTTP/1.1\r\n" \
              + "Host: " + HOST + "\r\n" \
              + "Content-Length: " + str(len(param_data)) + "\r\n" \
              + "Content-Type: application/x-www-form-urlencoded\r\n\r\n" \
              + param_data + "\r\n"

  addr = socket.getaddrinfo(HOST, PORT)[0][-1]  # 取得連線到伺服器的相關訊息
  print(addr)              # 顯示取得的address訊息內容

  try:
    Socket1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # Create STREAM TCP socket
    print("connecting to server")
    Socket1.connect(addr)          # 與伺服器進行連線
    print("server is connected")
    time.sleep_ms(1000)
    ssl_sock = ssl.wrap_socket(Socket1)    # SSL wrap
    ssl_sock.write(message_str)    # send data
    print("send done")
    time.sleep_ms(1000)
    Socket1.close()            # 關閉與伺服器的連線，避免佔用端口。
  except:
    print("except")
    time.sleep_ms(1000)

# Start Function
if __name__ == '__main__':
  print(os.uname())
  print("Hello, " + os.uname().sysname + "!")
  # ESP32 unique ID
  CLIENT_ID = ubinascii.hexlify(unique_id())
  print("Unique ID: ", end="")
  print(CLIENT_ID)

  # Define GPIO pins for LED and push button
  led1_pin = Pin(4, Pin.OUT)
  led2_pin = Pin(2, Pin.OUT)
  led1_pin.value(False)
  led2_pin.value(False)
  button_pin = Pin(35, Pin.IN, Pin.PULL_UP)  # Internal pull-up resistor

  # Attach interrupt to the push button pin
  button_pin.irq(trigger=Pin.IRQ_FALLING, handler=button_press)

  wlan.connect_wifi()

  payload = """content=This message is sent by "{:s}".""".format(os.uname().sysname)
  print(payload)       # 顯示此訊息內容進行debug
  sendMessage(payload)            # 執行此函數

  while True:
    led1_pin.value(not led1_pin.value())
    if button_down == True:
      temp=randint(1,50)
      humi=randint(1,100)
      Temp="Temp: %2d\u00b0C" % (temp)
      Humi="Humi: %2d%%" % (humi)
      payload = """content={:s}, {:s}..""".format(Temp,Humi)
      print(payload)       # 顯示此訊息內容進行debug
      sendMessage(payload)            # 執行此函數

      button_down = False

    # Do other tasks while waiting for button press
    time.sleep_ms(100)