Jan Tuomi
47 lines
1.0 KiB
Python
47 lines
1.0 KiB
Python
from django.shortcuts import render
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from django.http import JsonResponse
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import datetime
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from .mqtt import get_latest
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import coffee_scale.mqtt # somehow this is needed
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import logging
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from django.conf import settings
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def get_cups_from_weight(weight):
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if not weight:
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return 0
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EMPTY = 820 # grams
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FULL = 2000 # grams
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cups = 10 * (weight - EMPTY) / (FULL - EMPTY)
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cups = round(cups, 1)
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if cups < 0.5:
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cups = 0
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if cups > 10:
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cups = 10
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# logging.debug("Coffee cups: {}, weight: {}".format(cups, weight))
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return cups
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def coffee_view(request):
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logging.info('User navigated to coffee page!')
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return render(request, 'coffee.html')
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def cups_view(request):
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now = datetime.datetime.now()
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latest = get_latest()
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cups = get_cups_from_weight(latest.get('weight'))
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data = {
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'date': now,
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'cups': cups,
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'temp': latest.get('temp'),
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'last_brew': latest.get('last_brew'),
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'brewing': latest.get('brewing')
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}
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return JsonResponse(data)
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