Linnworks.py

import requests
import json
from urlparse import urlparse

app_id = 'some_app_id'
app_secret = 'some_app_secret'
token = 'some_token'

class Linnworks(object):
    def __init__(self, app_id, app_secret, token):
        header = {
            'Host': 'api.linnworks.net',
            'Connection': 'keep-alive',
            'Accept': 'application/json, text/javascript, */*; q=0.01',
            'Origin': 'https://www.linnworks.net',
            'Accept-Language': 'en',
            'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36',
            'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
            'Referer': 'https://www.linnworks.net/',
            'Accept-Encoding': 'gzip, deflate',
        }

        payload = {
            'applicationId': app_id,
            'applicationSecret': app_secret,
            'token': token,
        }

        r = requests.post('https://api.linnworks.net//api/Auth/AuthorizeByApplication', data=payload, headers=header)
        r.raise_for_status()

        self.session_token = r.json()['Token']
        self.session_server = r.json()['Server']
        self.ebay1_view_id = 'some_view_id' #I use just one view and so I got the id from browser inspector
        self.ebay1_location_id = '00000000-0000-0000-0000-000000000000' #I use just one location and so I got the id from browser inspector

        #works fine
        print self.session_token
        print self.session_server

    def get_inventory_items(self):
        header = {
            'Host': urlparse(self.session_server).hostname,
            'Connection': 'keep-alive',
            'Accept': 'application/json, text/javascript, */*; q=0.01',
            'Origin': 'https://www.linnworks.net',
            'Accept-Language': 'en',
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36',
            'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
            'Referer': 'https://www.linnworks.net/',
            'Accept-Encoding': 'gzip, deflate',
            'Authorization': self.session_token,
        }


        payload = {
            'view': {
                "Id": self.ebay1_view_id,
                "Name": "EBAY",
                "Mode": "All",
                "Source": "All",
                "SubSource": "Show all",
                "CountryCode": "All",
                "CountryName": "All",
                "Listing": "All",
                "ShowOnlyChanged": False,
                "IncludeProducts": "All",
                "Filters": [{
                    "FilterName": "General",
                    "DisplayName": "SKU / Title / Barcode",
                    "Field": "String",
                    "Condition": "Contains",
                    "Value": None}],
                "Columns": [{
                    "ColumnName": "SKU",
                    "DisplayName": "SKU",
                    "Group":"General",
                    "Field": "String",
                    "SortDirection": 0,
                    "Width": 150,
                    "IsEditable": False}],
                "Channels": [{"Source": "EBAY","SubSource": "EBAY1"}],
                "IsSearchRequired": True,
            },
            'stockLocationIds': [self.ebay1_location_id],
            'startIndex': 1,
            'itemsCount': 100,
            'preloadChilds': False,
        }

        r = requests.post(self.session_server + '/api/Inventory/GetInventoryItems',
                          headers=header,
                          data=json.dumps(payload) #This SHOULD correct the python Boolean and None into acceptable format
                          )
        print r.text
        # prints this: {"Message":"The request is invalid."}
        # TODO: fetch item ids

if __name__ == '__main__':
    lin = Linnworks(app_id, app_secret, token)
    lin.get_inventory_items()