import streamlit as st
import uuid, io, sys, os

def get_user_id():
	if "user_id" not in st.session_state:
		query_params = st.query_params
		user_id = query_params.get("user_id", None)
		if not user_id:
			user_id = str(uuid.uuid4())
			st.query_params["user_id"] = user_id
		st.session_state.user_id = user_id
	return st.session_state.user_id

def get_credentials(use_own_creds: bool):
	if use_own_creds:
		HIVEMQ_USERNAME = st.text_input("HIVEMQ Username", type="password")
		HIVEMQ_PASSWORD = st.text_input("HIVEMQ Password", type="password")
		HIVEMQ_HOST = st.text_input("HIVEMQ Host", type="password")
		DEVICE_ENDPOINT = st.text_input("Device ID", type="password")
		PORT = st.number_input("Port", min_value=1, step=1, value=8883)
	else:
		HIVEMQ_USERNAME = os.environ.get("HIVEMQ_USERNAME")
		HIVEMQ_PASSWORD = os.environ.get("HIVEMQ_PASSWORD")
		HIVEMQ_HOST = os.environ.get("HIVEMQ_HOST")
		DEVICE_ENDPOINT = os.environ.get("DEVICE_ID")
		PORT = int(os.environ.get("PORT", 8883))
	return HIVEMQ_USERNAME, HIVEMQ_PASSWORD, HIVEMQ_HOST, DEVICE_ENDPOINT, PORT

class StdoutRedirector(io.StringIO):
	def __init__(self, log_area, max_lines=20):
		super().__init__()
		self.log_area = log_area
		self.logs = []
		self.max_lines = max_lines

	def write(self, message):
		if message.strip():
			self.logs.append(message.strip())
			if len(self.logs) > self.max_lines:
				self.logs.pop(0)
			self.log_area.markdown(
				f"<div class='log-window'>{'<br>'.join(self.logs)}</div>", 
				unsafe_allow_html=True
			)

def render_log_window():
	st.markdown("""
		<style>
		.log-window {
			height: 150px;
			overflow-y: auto;
			font-family: monospace;
			background-color: var(--background-color);
			color: var(--text-color);
			padding: 10px;
			border-radius: 5px;
			border: 2px solid white;
		}
		</style>
	""", unsafe_allow_html=True)

	log_area = st.empty()
	stdout_redirector = StdoutRedirector(log_area)

	sys.stdout = stdout_redirector