from machine import Pin,unique_id
import urequests as requests
import utime
import ujson
import ubinascii
import sys, os
import urandom as random
import wlan

# --- 設定區 ---
INTERVAL = 1000  # millisecond

Line_user_id = ""
# Line Developers https://developers.line.biz/
Line_access_token = ""
Line_webhook_URL = "https://api.line.me/v2/bot/message/push"

if(sys.platform=="esp8266"):
  led_pin = 2 # GPIO2(D4)
  buzzer_pin = 5 # GPIO5(D1)
  button_pin = 4 # GPIO4(D2)
elif(sys.platform=="esp32"):
  led_pin = 2
  buzzer_pin = 5
  button_pin = 35
elif(sys.platform=="rp2"):
  led_pin = "LED"
  buzzer_pin = 15
  button_pin = 21

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

# 發送LINE訊息
def send_line_message(text):
  headers = {"Content-Type": "application/json",
             "Authorization": "Bearer " + Line_access_token
            }

  payload = {"to": Line_user_id,
             "messages": [
               {
                 "type": "text",
                 "text": text
               }
             ]
            }
  # 先轉成 JSON 字串，再手動編碼為 utf-8 bytes
  binary_data = ujson.dumps(payload).encode('utf-8')
  print("Send Data:", binary_data)

  try:
    wlan.connect_wifi() # Connecting to WiFi Router
    response = requests.post(Line_webhook_URL,
                             headers=headers,
                             data=binary_data)
    print("Response Status:", response.status_code)
    print("Response Text:", response.text)
    response.close()
    print("Send success!")
  except Exception as e:
    print("Error sending message:", e)

# Function to handle button press interrupt (optional)
def button_press(pin):
  global button_down
  button_down = True

# Start Function
if __name__ == '__main__':
  print(os.uname())
  print("Hello, " + os.uname().sysname + "!")

  # Unique ID
  CLIENT_ID = ubinascii.hexlify(unique_id())
  print("Unique ID: ", end="")
  print(CLIENT_ID)

  # Define GPIO pins for LED and push button
  led = Pin(led_pin, Pin.OUT)
  led.off()

  button = Pin(button_pin, Pin.IN, Pin.PULL_UP)  # 按鍵接在 GPxx, Internal pull-up resistor
  button_down = False

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

  utime.sleep_ms(1000)
  led.on()
  payload = """你好！這是來自{:s}的測試訊息。""".format(os.uname().sysname)
  send_line_message(payload)
  led.off()

  lastTime = utime.ticks_ms()

  while True:

    try:
      currTime = utime.ticks_ms()
      if (currTime - lastTime) > INTERVAL:
        led.value(not led.value())
        # led.toggle()
        lastTime = currTime

      if button_down == True:
        led.on()
        # 模擬溫濕度數據
        temp = randint(20, 35)  # 假設攝氏 20~35℃
        humi = randint(40, 80)  # 假設濕度 40~80%
        Temp="Temp: %2d" % (temp)
        Humi="Humi: %2d" % (humi)

        payload = "{:s}, {:s}..".format(Temp,Humi)
        send_line_message(payload)
        button_down = False
        led.off()

      # Do other tasks while waiting for button press
      utime.sleep_ms(100)
    except KeyboardInterrupt: # 使用者中斷執行(通常是輸入^C)
      print("Stop")