Ethereum Notification System

get.py

import urllib.request
import json
import datetime
import csv
import matplotlib.pyplot as plt
import matplotlib.dates as md
import dateutil
import os

from pushbullet import Pushbullet


# get your api key here: https://www.worldcoinindex.com/apiservice
urlWorldCoinIndexAPI = 'https://www.worldcoinindex.com/apiservice/json?key=XXXXXXXXXXX'
# get your access token on pushbullet.com
pb = Pushbullet("XXXXXXXXXXXXX")


r = urllib.request.urlopen(urlWorldCoinIndexAPI).read()
data = json.loads(r.decode('utf-8'))




eth = 0.0


for market in data['Markets']:
    if market['Name'] == 'Ethereum':
        eth = float(market['Price_eur'])


t = datetime.datetime.now()
fmt = '%Y-%m-%d %H:%M:%S'
tstring = t.strftime(fmt)
currentHour = int(t.strftime('%H'))

if os.path.exists('data.csv'):
    with open('data.csv', 'a+') as f:
        writer = csv.writer(f)
        writer.writerow([tstring, eth])
        f.close()
else:
    with open('data.csv', 'w+') as f:
        writer = csv.writer(f)
        writer.writerow(['date','value'])
        writer.writerow([tstring, eth])
        f.close()


valueAtMidnight = 0.0

if os.path.exists('day-start.txt'):
    with open('day-start.txt', 'r+') as f:
        valueAtMidnight = float(f.read())
        if currentHour == 0:
            valueAtMidnight = eth
            f.seek(0)
            text = '%.4f' % valueAtMidnight
            f.write(text)
        f.close()
else:
    with open('day-start.txt', 'w+') as f:
        text = '%.4f' % eth
        f.write(text)
        f.close()
    valueAtMidnight = eth


variation = round( (1 - valueAtMidnight/eth)*100, 4)

if abs(variation) >= 4:
    # avoid being flooded
    if os.path.exists('notif-date.txt'):
        with open('notif-date.txt', 'r+') as f:
            lastdate = datetime.datetime.strptime(f.read().split('\n')[0], fmt)
            diff = (lastdate - t).days

            if diff != -1:
                sign = '+' if variation > 0 else ''
                text = '%.4f' % variation
                pb.push_note('Alert ETH : Variation de ' + sign +''+ text +'%', "")
                f.seek(0)
                f.write(tstring)
            f.close()
    else:
        with open('notif-date.txt', 'w+') as f:
            f.write(tstring)
            f.close()
            sign = '+' if variation > 0 else ''
            text = '%.4f' % variation
            pb.push_note('Alert ETH : Variation de ' + sign +''+ text +'%', "")



if currentHour == 18:
    datestrings = []
    ethvalues = []


    with open('./data.csv') as csvfile:
        reader = csv.DictReader(csvfile)
        for row in reader:
            cdate = datetime.datetime.strptime(row['date'], fmt)
            diff = (cdate - t).days
            if diff == -1:
                datestrings.append(row['date'])
                ethvalues.append(float(row['value']))

    dates = [dateutil.parser.parse(s) for s in datestrings]


    plt.subplots_adjust(bottom=0.2)
    plt.xticks( rotation=25 )

    ax=plt.gca()
    ax.set_xticks(dates)

    xfmt = md.DateFormatter('%H:%M')
    ax.xaxis.set_major_formatter(xfmt)
    plt.plot(dates,ethvalues, 'o-')
    plt.savefig('graph.png')

    with open("graph.png", "rb") as pic:
        file_data = pb.upload_file(pic, "ETH Daily Graph", file_type="image/png")
    pb.push_file(**file_data)