btc-eth.png

Inky-wHAT-ticker.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
from inky import InkyWHAT
from PIL import Image, ImageFont, ImageDraw
from font_fredoka_one import FredokaOne
import requests
import sched
import time

def get_latest_price(currency):
    BITCOIN_API_URL = 'https://api.coinmarketcap.com/v1/ticker/' + currency + '/'
    response = requests.get(BITCOIN_API_URL)
    response_json = response.json()

    return '$' + '{:.2f}'.format(round(float(response_json[0]['price_usd'])))

def render_ticker(bitcoin_price, eth_price):
    bitcoinPrice = bitcoin_price
    ethPrice = eth_price

    inky_display = InkyWHAT('yellow')

    inky_display.set_border(inky_display.WHITE)

    img = Image.open('//home/pi/Documents/btc-eth.png')
    draw = ImageDraw.Draw(img)
    font = ImageFont.truetype(FredokaOne, 50)

    x = 160

    wid = inky_display.WIDTH

    (btcw, btch) = font.getsize(bitcoinPrice)
    btcy = inky_display.HEIGHT / 4 - btch / 2
    draw.text((x, btcy), bitcoinPrice, inky_display.BLACK, font)

    (ethw, ethh) = font.getsize(ethPrice)
    ethy = inky_display.HEIGHT - inky_display.HEIGHT / 4 - ethh / 2
    draw.text((x, ethy), ethPrice, inky_display.BLACK, font)

    rotated_image = img.rotate(180)

    inky_display.set_image(rotated_image)
    inky_display.show()


def show_error():
    message = 'Error...'
    inky_display = InkyWHAT('yellow')
    img = Image.new("P", (inky_display.WIDTH, inky_display.HEIGHT))
    draw = ImageDraw.Draw(img)
    font = ImageFont.truetype(FredokaOne, 50)
    (w, h) = font.getsize(message)
    x = inky_display.WIDTH / 2 - w / 2
    y = inky_display.HEIGHT / 2 - h / 2
    draw.text((x, y), message, inky_display.BLACK, font)
    rotated_image = img.rotate(180)
    inky_display.set_image(rotated_image)
    inky_display.show()


starttime = time.time()
previous_bitcoin_price = ''
previous_eth_price = ''
while True:
    try:
        current_bitcoin_price = get_latest_price('bitcoin')
        current_eth_price = get_latest_price('ethereum')
        
        if current_bitcoin_price != previous_bitcoin_price or current_eth_price != previous_eth_price:
            render_ticker(current_bitcoin_price, current_eth_price)
        else:
            print('Skipping duplicate render') 
        previous_bitcoin_price = current_bitcoin_price
        previous_eth_price = current_eth_price
        
        time.sleep(60.0 - (time.time() - starttime) % 60.0)
    except:
        show_error()