Python script for populating a Facebook store with items from Ebay

Products.cgi

#!/path/to/python3



## About ##
## Ebay2FacebookLite created by Samuel H. 2019 ##
## Problem: Facebook does not support ebay store integration ##
## Bad Solution: manually put items in facebook store and link each item to the ebay store ##
## Better Solution: use python and ebay's APIs to automate the process and export the store
## dynamically as a product feed for facebook to use ##

## How to use on my server:
## 1. Create a link for the script, see def printHelp() below for the link specifications
## 2. Set up facebook item feed, paste in the link, and set a query frequency in facebook.

## How to use on your server:
## 1. Set this script up on a server as a cgi, it needs to be accessible from a web point for facebook to use.
## 2. Create a link for the script, see def printHelp() below for the link specifications
## 3. Set up facebook item feed, paste in the link, and set a query frequency in facebook.

###






from ebaysdk.finding import Connection
from ebaysdk.shopping import Connection as Shopping
import cgi #for input
import re #obviously for parsing
import cgitb #formatting
cgitb.enable()

#this will be printed when the user feeds us invalid input, also serves as a quick reference when viewing the cgi
def printHelp():
  print("You have provided Ebay2FacebookLite with incorrect input. Please read and recorrect your input.")
  print("5amproductions.net/nClaudelStore/products.cgi?s_name=VALUE&b_name=VALUE&g_c=VALUE")
  print("s_name, Seller Name: The name of the seller you wish to data to facebook with.")
  print("b_name, Brand Name: Facebook requires each of your items to have a brand name, this will be added to all the items.")
  print("g_c, Google Category: Facebook requires your items to have a google product category, here is a list of all the possible values: https://www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt")
  exit()

#name of the "file" sent to the browser, or ebay
filename = "output.csv"
#Obtained from the ebay developer portal
ebayAppID = '<REAL ID OMITTED>'

#prepare the headers for a file download
print("Content-type: application/octet-stream")
print("Content-Disposition: attachment; filename=%s" %(filename))
print()

#first line of the csv, defines all the fields that we have.. these are currently compatible with Facebook's fields
csvHeader = "ID,Availability,Brand,CONDITION,Title,IMAGE_LINK,LINK,Inventory,google_product_category,Description,PRICE,ADDITIONAL_IMAGE_LINK"

#end definitions, begin the actual work


#fetch input, will default to "" if not availble
inputData = cgi.FieldStorage()
seller_name = inputData.getvalue('s_name')
brand_name = inputData.getvalue('b_name')
google_class = inputData.getvalue('g_c')

#begin ebay Connection API, this is what allows us to query for items that a seller has
api = Connection(siteid='EBAY-US', appid=ebayAppID,config_file=None)
#begin Shopping API, this gives us the ability to fetch more detail about the items in question
itemApi = Shopping(appid=ebayAppID, config_file=None)

#ebay, will you please tell us what items seller_name is selling?
response = api.execute('findItemsAdvanced', {
            'itemFilter': [
                           {'name': 'Seller', 'value': seller_name}
                           ]
            })

#Ebay: "no I will not tell you because you have given me incorrect input"
if response.reply.ack == "Failure":
  #tell the user about it, and exit
  printHelp()

#Ebay: "yes that's correct input, but that seller isn't selling anything!"
if response.reply.searchResult._count == "0":
  #tell the user about it, and exit
  print("No items found for the that seller!\n")
  printHelp()

#assuming there were no errors above, iterate through every item that we found
for item in response.reply.searchResult.item:
    if item.sellingStatus.sellingState == "Active":
        #begin populating the table
        csvHeader += "\n"
        csvHeader += item.itemId + ",in stock,"
        csvHeader += brand_name + ",new,"
        csvHeader += item.title + ","
        csvHeader += item.galleryURL + ","
        csvHeader += item.viewItemURL + ",1,"
        csvHeader += google_class + ","
        itemInf = itemApi.execute('GetSingleItem', {'ItemID': item.itemId, 'IncludeSelector': 'TextDescription'})
        csvHeader += '"' + re.sub('"', '""', itemInf.reply.Item.Description) + '",'

        #because some bids start at $0.01, and Facebook has a minimum price of 50 cents, we need to raise the price
        p = item.sellingStatus.currentPrice.value
        if p == "0.01":
            p = "0.51"
        csvHeader += p + ',"'
        #lastly, appent the urls for the pictures
        for u in itemInf.reply.Item.PictureURL:
            csvHeader += u + ","
        if len(itemInf.reply.Item.PictureURL) > 1:
            csvHeader = csvHeader[:-1]
        csvHeader += '"'

#spit out the data, and we are good to go!
print(csvHeader.encode('ascii', 'ignore').decode('ascii'))