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Adding the barcode scanning script
This commit is contained in:
Jason P Hamilton
parent
6442665f6c
commit
8546e9327e
240
scripts/barcode_reader.py
Executable file
240
scripts/barcode_reader.py
Executable file
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#!/usr/bin/python
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import signal, sys
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import json
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import requests
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from evdev import InputDevice, categorize, ecodes
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#This will allow you to work the grocy inventory with a barcode scanner
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UPC_DATABASE_API='YOUR_TOKEN'
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buycott_token='YOUR_TOKEN'
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GROCY_API='YOUR_TOKEN'
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add_id='YOUR_ADD_BARCODE'
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base_url = 'YOUR_BASE_URL'
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ADD = 0
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barcode = ''
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found = ''
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device = InputDevice('/dev/input/event0') # Replace with your device
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scancodes = {
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11: u'0',
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2: u'1',
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3: u'2',
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4: u'3',
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5: u'4',
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6: u'5',
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7: u'6',
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8: u'7',
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9: u'8',
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10: u'9'
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}
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NOT_RECOGNIZED_KEY = u'X'
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def increase_inventory(upc):
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#Need to lookup our product_id, if we don't find one we'll do a search and add it
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product_id_lookup(upc)
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print ("Increasing %s") % (product_name)
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url = base_url+"/stock/products/%s/add" % (product_id)
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data = {'amount': purchase_amount,
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'transaction_type': 'purchase'}
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#We have everything we need now in order to complete the rest of this function
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grocy_api_call_post(url, data)
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#As long as we get a 200 back from the app it means that everything went off without a hitch
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if response_code != 200:
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print ("Increasing the value of %s failed") % product_name
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barcode = ''
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def decrease_inventory(upc):
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#Going to see if we can find a product_id, if we don't find it we'll add it. Problem here though is that we need to have a quantity in the system. If there isn't any we'll error because there is nothing to decrease. This is ok
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product_id_lookup(upc)
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print("Stepping into the decrease")
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#Lets make sure we can actually decrease this before we get too crazy
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if stock_amount > 0:
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print ("Decreasing %s by 1") % (product_name)
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url = base_url+"/stock/products/%s/consume" % (product_id)
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data = {'amount': 1,
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'transaction_type': 'consume',
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'spoiled': 'false'}
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#We now have everything we need and we can now proceed
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grocy_api_call_post(url, data)
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if response_code == 400:
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print ("Decreasing the value of %s failed, are you sure that there was something for us to decrease?") % product_name
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else:
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print ("The current stock amount is 0 so there was nothing for us to do here")
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barcode=''
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def product_id_lookup(upc):
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#Need to declare this as a global and we'll do this again with a few others because we need them elsewhere
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global product_id
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print("Looking up the product_id")
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#Lets check to see if the UPC exists in grocy
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url = base_url+"/stock/products/by-barcode/%s" % (upc)
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headers = {
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'cache-control': "no-cache",
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'GROCY-API-KEY': GROCY_API
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}
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r = requests.get(url, headers=headers)
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r.status_code
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#Going to check and make sure that we found a product to use. If we didn't find it lets search the internets and see if we can find it.
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if r.status_code == 400:
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upc_lookup(upc)
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else:
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j = r.json()
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global product_id
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product_id = j['product']['id']
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global purchase_amount
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purchase_amount = j['product']['qu_factor_purchase_to_stock']
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global product_name
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product_name = j['product']['name']
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print ("Our product_id is %s") % (product_id)
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global stock_amount
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stock_amount = j['stock_amount']
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def upc_lookup(upc):
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if UPC_DATABASE_API != '':
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print("Looking up the UPC")
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url = "https://api.upcdatabase.org/product/%s/%s" % (upc, UPC_DATABASE_API)
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headers = {
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'cache-control': "no-cache",
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}
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try:
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r = requests.get(url, headers=headers)
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if r.status_code==200:
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print("UPC DB found it so now going to add it to the system")
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j = r.json()
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name = j['title']
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description = j['description']
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#We now have what we need to add it to grocy so lets do that
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add_to_system(upc, name, description)
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except requests.exceptions.Timeout:
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print("The connection timed out")
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except requests.exceptions.TooManyRedirects:
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print ("Too many redirects")
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except requests.exceptions.RequestException as e:
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print e
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if buycott_token != '':
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print("Looking up in Buycott")
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url = "https://www.buycott.com/api/v4/products/lookup"
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headers = {
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'Content-Type': 'application/json'
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}
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data={'barcode':upc,
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'access_token':buycott_token
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}
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try:
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r = requests.get(url=url, json=data, headers=headers)
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j = r.json()
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if r.status_code == 200:
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print("Buycott found it so now we're going to gather some info here and then add it to the system")
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name = j['products'][0]['product_name']
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description = j['products'][0]['product_description']
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#We now have what we need to add it to grocy so lets do that
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#Sometimes buycott returns a success but it never actually does anything so lets just make sure that we have something
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if name != '':
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add_to_system(upc, name, description)
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except requests.exceptions.Timeout:
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print("The connection timed out")
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except requests.exceptions.TooManyRedirects:
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print ("Too many redirects")
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except requests.exceptions.RequestException as e:
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print e
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else:
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#This is a free service that limits you to 100 hits per day if we can't find it here we'll still create it in the system but it will be just a dummy entry
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print("Looking up in UPCItemDB")
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url = "https://api.upcitemdb.com/prod/trial/lookup?upc=%s" % (upc)
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headers = {
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'Content-Type': 'application/json',
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'cache-control': "no-cache"
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}
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try:
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r = requests.get(url=url, headers=headers)
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j = r.json()
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if r.status_code == 200:
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print("UPCItemDB found it so now we're going to gather some info here and then add it to the system")
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name = j['items'][0]['title']
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description = j['items'][0]['description']
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#We now have what we need to add it to grocy so lets do that
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add_to_system(upc, name, description)
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else:
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print ("The item with %s was not found so we're adding a dummy one") % (upc)
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name="The product was not found in the external sources you will need to fix %s" % (upc),
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description=''
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add_to_system(upc, name, description)
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except requests.exceptions.Timeout:
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print("The connection timed out")
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except requests.exceptions.TooManyRedirects:
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print ("Too many redirects")
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except requests.exceptions.RequestException as e:
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print e
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#By now we have our product added to the system. We can now lookup our product_id again and then proceed with whatever it is we were doing
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if response_code != 204:
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#Something went wrong and the add the product was not added
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print("Adding the product with %s failed not sure why but it did") % (upc)
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product_id_lookup(upc)
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#Rather than have this in every section of the UPC lookup we just have a function that we call for building the json for the api call to actually add it to the system
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def add_to_system(upc, name, description):
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url = base_url+"/objects/products"
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data ={"name": name,
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"description": description,
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"barcode": upc,
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"location_id": 6,
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"qu_id_purchase": 1,
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"qu_id_stock":0,
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"qu_factor_purchase_to_stock": 1,
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"default_best_before_days": -1
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}
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grocy_api_call_post(url, data)
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if response_code==204:
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print("Just added %s to the system") % (name)
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if response_code !=204:
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print("Adding the product failed")
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#This is a function that is referred to a lot through out the app so its easier for us to just use it as a function rather than type it out over and over
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def grocy_api_call_post(url, data):
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headers = {
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'cache-control': "no-cache",
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'GROCY-API-KEY': GROCY_API
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}
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try:
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r = requests.post(url=url, json=data, headers=headers)
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r.status_code
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global response_code
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response_code = r.status_code
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print r.status_code
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except requests.exceptions.Timeout:
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print("The connection timed out")
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except requests.exceptions.TooManyRedirects:
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print ("Too many redirects")
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except requests.exceptions.RequestException as e:
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print e
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for event in device.read_loop():
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if event.type == ecodes.EV_KEY:
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eventdata = categorize(event)
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if eventdata.keystate == 1: # Keydown
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scancode = eventdata.scancode
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if scancode == 28: # Enter
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print barcode
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if barcode != '':
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if barcode == add_id and ADD == 0:
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ADD = 1
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barcode=''
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print("Entering add mode")
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elif barcode == add_id and ADD == 1:
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ADD = 0
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barcode=''
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print("Entering consume mode")
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elif ADD == 1:
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upc=barcode
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barcode=''
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increase_inventory(upc)
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elif ADD == 0:
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upc=barcode
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barcode=''
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decrease_inventory(upc)
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else:
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key = scancodes.get(scancode, NOT_RECOGNIZED_KEY)
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barcode = barcode + key
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if key == NOT_RECOGNIZED_KEY:
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print('unknown key, scancode=' + str(scancode))
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