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dcraspaper.py
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dcraspaper.py
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#!/usr/bin/python
# -*- coding:utf-8 -*-
import sys
import os
import urllib2
import json
import datetime
picdir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'pic')
libdir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'lib')
if os.path.exists(libdir):
sys.path.append(libdir)
import logging
from waveshare_epd import epd2in13_V2
import time
from PIL import Image,ImageDraw,ImageFont
import traceback
from ascii_graph import Pyasciigraph
logging.basicConfig(level=logging.INFO)
try:
logging.info(str(datetime.datetime.now()) + " - Decred Raspberry Pi e-Paper Dashboard")
epd = epd2in13_V2.EPD()
epd.init(epd.FULL_UPDATE)
epd.Clear(0xFF)
# Fonts to drraw on the image
font10 = ImageFont.truetype(os.path.join(picdir, 'SourceSansPro-Regular.ttf'), 10)
font12 = ImageFont.truetype(os.path.join(picdir, 'SourceSansPro-Regular.ttf'), 12)
font15 = ImageFont.truetype(os.path.join(picdir, 'SourceSansPro-Regular.ttf'), 15)
font24 = ImageFont.truetype(os.path.join(picdir, 'SourceSansPro-Regular.ttf'), 24)
fontgraph10 = ImageFont.truetype(os.path.join(picdir, 'SourceCodePro-Regular.ttf'), 10)
fontgraph12 = ImageFont.truetype(os.path.join(picdir, 'SourceCodePro-Regular.ttf'), 12)
# read logo bmp file
logging.info(str(datetime.datetime.now()) + " - Show Decred Logo")
image = Image.open(os.path.join(picdir, '2in13-v2-logo.bmp'))
epd.display(epd.getbuffer(image))
logging.info(str(datetime.datetime.now()) + " - Show Stakey Image")
initlog_image = Image.open(os.path.join(picdir, '2in13-v2-stakeyloader.bmp'))
initlog_draw = ImageDraw.Draw(initlog_image)
epd.init(epd.FULL_UPDATE)
epd.displayPartBaseImage(epd.getbuffer(initlog_image))
while True:
logging.info(str(datetime.datetime.now()) + " - Connecting dcrdata")
blockheight_url = 'https://dcrdata.decred.org/api/block/best/height'
response = urllib2.urlopen(blockheight_url)
blockheight = response.read()
stakeinfo_url = urllib2.urlopen('https://dcrdata.decred.org/api/block/best/pos')
stakeinfo_json = json.loads(stakeinfo_url.read())
stakediff = stakeinfo_json['stakediff']
stakediff_2decimals = "{:3.2f}".format(stakediff)
exchange_url = urllib2.urlopen('https://dcrdata.decred.org/api/exchanges')
exchange_json = json.loads(exchange_url.read())
usd_price = exchange_json['price']
usd_price_2decimals = "{:3.2f}".format(usd_price)
stakereward_url = urllib2.urlopen('https://dcrdata.decred.org/api/block/best/subsidy')
stakereward_json = json.loads(stakereward_url.read())
stakereward = float(stakereward_json['stake_reward'])/100000000
stakereward_2decimals = "{:1.3f}".format(stakereward)
txcount_url = urllib2.urlopen('https://dcrdata.decred.org/api/block/best/tx/count')
txcount_json = json.loads(txcount_url.read())
txcount = txcount_json['tx']
stxcount = txcount_json['stx']
# partitial display update
logging.info(str(datetime.datetime.now()) + " - Show dcrdata infos")
epd.init(epd.PART_UPDATE)
initlog_draw.rectangle((150, 0, 250, 122), fill = 255)
initlog_draw.text((150, 0), 'Block: ' + str(blockheight) + '\n tx: ' + str(txcount) + ' / stx: ' + str(stxcount) + '\n Ticket: ' + str(stakediff_2decimals) + '\n Reward: ' + str(stakereward_2decimals) + '\n Price $: ' + str(usd_price_2decimals), font = font15, fill = 1)
epd.displayPartial(epd.getbuffer(initlog_image))
time.sleep(5)
logging.info(str(datetime.datetime.now()) + " - Connecting politeia")
politeiactivevote_url = urllib2.urlopen('https://proposals.decred.org/api/v1/proposals/activevote')
politeiactivevote_json = json.loads(politeiactivevote_url.read())
activevote_sum = len(politeiactivevote_json['votes'])
if activevote_sum > 0:
logging.info(str(datetime.datetime.now()) + " - " + str(activevote_sum) + " Active votes found. Show politeia dashboard")
politeia_image = Image.open(os.path.join(picdir, '2in13-v2-politeia.bmp'))
politeia_draw = ImageDraw.Draw(politeia_image)
epd.init(epd.FULL_UPDATE)
epd.displayPartBaseImage(epd.getbuffer(politeia_image))
for proposals in politeiactivevote_json['votes']:
for proposal,v1 in proposals.iteritems():
if proposal == 'proposal':
proposal_name = v1['name']
proposal_token = v1['censorshiprecord']['token']
proposal_url = urllib2.urlopen('https://proposals.decred.org/api/v1/proposals/'+proposal_token+'/votestatus')
logging.info(str(datetime.datetime.now()) + " - Requesting votestatus for proposal "+proposal_name)
proposalstatus_json = json.loads(proposal_url.read())
proposal_totalvotes = proposalstatus_json['totalvotes']
voteresults = []
for options in proposalstatus_json['optionsresult']:
option_description = options['option']['id']
option_votesreceived = options['votesreceived']
voteresults.append(tuple((option_description,option_votesreceived)))
# graph generation here
graph = Pyasciigraph(
line_length=40,
graphsymbol='*',
separator_length=2,
min_graph_length=15,
)
graphtext = ""
for line in graph.graph(proposal_name, voteresults):
graphtext = graphtext + line + "\n"
epd.init(epd.PART_UPDATE)
politeia_draw.rectangle((0, 40, 250, 122), fill = 255)
politeia_draw.text((0, 40), graphtext, font = fontgraph10, fill = 1)
epd.displayPartial(epd.getbuffer(politeia_image))
time.sleep(10)
else:
logging.info(str(datetime.datetime.now()) + " - Sleep for 5 minutes")
time.sleep(300)
logging.info(str(datetime.datetime.now()) + " - Clear...")
epd.init(epd.FULL_UPDATE)
epd.Clear(0xFF)
logging.info(str(datetime.datetime.now()) + " - Goto Sleep...")
epd.sleep()
except IOError as e:
logging.info(e)
except KeyboardInterrupt:
logging.info(str(datetime.datetime.now()) + " - ctrl + c:")
epd.init(epd.FULL_UPDATE)
epd.Clear(0xFF)
epd2in13_V2.epdconfig.module_exit()