# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

import time
from os import getenv

import adafruit_connection_manager
import board
import busio
import neopixel
from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager
from digitalio import DigitalInOut

import adafruit_minimqtt.adafruit_minimqtt as MQTT

# Get WiFi details and broker keys, ensure these are setup in settings.toml
# (visit io.adafruit.com if you need to create an account, or if you need your Adafruit IO key.)
ssid = getenv("CIRCUITPY_WIFI_SSID")
password = getenv("CIRCUITPY_WIFI_PASSWORD")
aio_username = getenv("ADAFRUIT_AIO_USERNAME")
aio_key = getenv("ADAFRUIT_AIO_KEY")
broker = getenv("broker", "io.adafruit.com")
broker_port = int(getenv("broker_port", "8883"))  # Port 1883 insecure, 8883 secure

### WiFi ###

# If you are using a board with pre-defined ESP32 Pins:
esp32_cs = DigitalInOut(board.ESP_CS)
esp32_ready = DigitalInOut(board.ESP_BUSY)
esp32_reset = DigitalInOut(board.ESP_RESET)

# If you have an externally connected ESP32:
# esp32_cs = DigitalInOut(board.D9)
# esp32_ready = DigitalInOut(board.D10)
# esp32_reset = DigitalInOut(board.D5)

spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
"""Use below for Most Boards"""
status_pixel = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2)  # Uncomment for Most Boards
"""Uncomment below for ItsyBitsy M4"""
# status_pixel = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
# Uncomment below for an externally defined RGB LED
# import adafruit_rgbled
# from adafruit_esp32spi import PWMOut
# RED_LED = PWMOut.PWMOut(esp, 26)
# GREEN_LED = PWMOut.PWMOut(esp, 27)
# BLUE_LED = PWMOut.PWMOut(esp, 25)
# status_pixel = adafruit_rgbled.RGBLED(RED_LED, BLUE_LED, GREEN_LED)
wifi = adafruit_esp32spi_wifimanager.WiFiManager(esp, ssid, password, status_pixel=status_pixel)

### Code ###


# Define callback methods which are called when events occur
def connected(client, userdata, flags, rc):
    # This function will be called when the client is connected
    # successfully to the broker.
    print("Connected to MQTT Broker!")


def disconnected(client, userdata, rc):
    # This method is called when the client is disconnected
    print("Disconnected from MQTT Broker!")


def subscribe(client, userdata, topic, granted_qos):
    # This method is called when the client subscribes to a new feed.
    print(f"Subscribed to {topic} with QOS level {granted_qos}")


def unsubscribe(client, userdata, topic, pid):
    # This method is called when the client unsubscribes from a feed.
    print(f"Unsubscribed from {topic} with PID {pid}")


def on_battery_msg(client, topic, message):
    # Method called when device/batteryLife has a new value
    print(f"Battery level: {message}v")

    # client.remove_topic_callback(f"{aio_username}/feeds/device.batterylevel")


def on_message(client, topic, message):
    # Method callled when a client's subscribed feed has a new value.
    print(f"New message on topic {topic}: {message}")


# Connect to WiFi
print("Connecting to WiFi...")
wifi.connect()
print("Connected!")

pool = adafruit_connection_manager.get_radio_socketpool(esp)
ssl_context = adafruit_connection_manager.get_radio_ssl_context(esp)

# Set up a MiniMQTT Client
client = MQTT.MQTT(
    broker=broker,
    port=broker_port,
    username=aio_username,
    password=aio_key,
    socket_pool=pool,
    ssl_context=ssl_context,
)

# Setup the callback methods above
client.on_connect = connected
client.on_disconnect = disconnected
client.on_subscribe = subscribe
client.on_unsubscribe = unsubscribe
client.on_message = on_message
client.add_topic_callback(f"{aio_username}/feeds/device.batterylevel", on_battery_msg)

# Connect the client to the MQTT broker.
print("Connecting to MQTT broker...")
client.connect()

# Subscribe to all notifications on the device group
client.subscribe(f"{aio_username}/groups/device", 1)

# Start a blocking message loop...
# NOTE: NO code below this loop will execute
while True:
    try:
        client.loop()
    except (ValueError, RuntimeError) as e:
        print("Failed to get data, retrying\n", e)
        wifi.reset()
        client.reconnect()
        continue
    time.sleep(1)