import paho.mqtt.client as mqtt
import requests
import time
import os
import flaschen
import threading
import time

state = {
    'startup': 0,
    'last_change': None,
}

p=None

UDP_IP = '10.8.0.146'
UDP_PORT = 1337
isKupa=True

letter_k=[
    4,
    ["1001",
    "1010",
    "1100",
    "1010",
    "1001"]
]

letter_u=[
    4,
    ["1001",
    "1001",
    "1001",
    "1001",
    "0110"]
]

letter_p=[
    4,
    ["1110",
    "1001",
    "1110",
    "1000",
    "1000"]
]

letter_a=[
    4,
    ["0110",
    "1001",
    "1111",
    "1001",
    "1001"]
]

letter_space=[
    4,
    ["0000",
    "0000",
    "0000",
    "0000",
    "0000"]
]

ft = flaschen.Flaschen(UDP_IP, UDP_PORT,8, 5)

current_text_offset=0

def get_char_pixel_length(ch):
    l = {
        'k': letter_k[0],
        'u': letter_u[0],
        'p': letter_p[0],
        'a': letter_a[0],
        ' ': letter_space[0]
    }.get(ch, 0)
    return l + 1

def get_char_pixel_bitmap(ch):
    l = {
        'k': letter_k[1],
        'u': letter_u[1],
        'p': letter_p[1],
        'a': letter_a[1],
        ' ': letter_space[1]
    }.get(ch, ["0000","0000","0000","0000","0000"])
    return l

def get_string_pixel_length(st):
    l=0
    for c in st:
        l += get_char_pixel_length(c)

    return l

def print_letter(ch):
    white=(255,255,255)
    for x in range(0,ch[0]):
        for y in range(0,5):
            if ch[1][y][x]=='1':
                ft.set(x,y,white)

def get_text_vline(st, i):
    done=False
    letter=0
    offset=0
    previous_offset = 0
    if i >= get_string_pixel_length(st):
        return['0','0','0','0','0']
    while not done:
        offset +=get_char_pixel_length(st[letter])
        if i < offset-1:

            done=True
            vline = [get_char_pixel_bitmap(st[letter])[0][i-previous_offset],get_char_pixel_bitmap(st[letter])[1][i-previous_offset],get_char_pixel_bitmap(st[letter])[2][i-previous_offset],get_char_pixel_bitmap(st[letter])[3][i-previous_offset], get_char_pixel_bitmap(st[letter])[4][i-previous_offset]]
            return vline
        elif i == offset-1:
            
            vline = ['0','0','0','0','0']
            done=True
        else:
            
            letter += 1
            previous_offset = offset
    return vline

def prepare_text_block(st):
    l=get_string_pixel_length(st)
    #l+=8 # add full clear screen for text rotation
    block=[]
    i=0
    for vline in range(0,l):
        block.append(get_text_vline(st, i))
        i+=1

    return block


def print_text(block):
    for x in range(current_text_offset, current_text_offset+8):
        for y in range(0, ft.height):
            if block[x][y] == '1':
                ft.set(x-current_text_offset, y, (255,255,255))

def render_thread(name):
    global current_text_offset
    text="  kupa  "
    print("we start sraning")
    block = prepare_text_block(text)
    while isKupa:
        for y in range(0, ft.height):
            for x in range(0, ft.width):
                ft.set(x, y, (255, 0, 0))
        print_text(block)
        #print_letter(letter_k)
        ft.send()
        time.sleep(0.125)
        current_text_offset+=1
        if (current_text_offset >= get_string_pixel_length(text)-8):
            current_text_offset = 0

# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc):
    print("Connected with result code "+str(rc))
    global state
    state['startup'] = time.time()

    # Subscribing in on_connect() means that if we lose the connection and
    # reconnect then subscriptions will be renewed.
    client.subscribe("iot/247a1d/#")

# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg):
    global state
    global isKupa
    if time.time() - state['startup'] > 1.0:
        print(msg.topic+" "+str(msg.payload))
        if msg.topic.endswith('shitting/state'):
            print(msg.payload.decode())
            s = msg.payload.decode() == 'true'

            toilet_state = 'OCCUPIED' if s else 'FREE'
            shitting_period = time.time() - state['last_change'] if state['last_change'] else None

            try:
                if s == True:
                    p = threading.Thread(target=render_thread, args=(1,))
                    isKupa=True
                    print("isKupa is on")
                    p.start()
                else:
                    print("isKupa is off")
                    isKupa=False

            except Exception as exc:
                print(exc)


        state['last_change'] = time.time()


client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message

client.connect("iot.waw.hackerspace.pl", 1883, 60)

# Blocking call that processes network traffic, dispatches callbacks and
# handles reconnecting.
# Other loop*() functions are available that give a threaded interface and a
# manual interface.
client.loop_forever()