(CkPython) Wish for Merchants -- Get OAuth2 Access Token for Desktop App

Demonstrates how to get a Wish for Merchants OAuth2 access token from a desktop application or script.

Note: This example requires Chilkat v10.1.2 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux

import sys
import chilkat

# To further clarify, see OAuth 2.0 Authorization Flow

# This example is for desktop applicatons (it is not for code that runs on a web server).

# This is the way to initially obtain the OAuth2 access token.  Afterwards it can be 
# repeatedly refreshed without user interaction, as shown in this example: Refresh Wish OAuth2 Access Token.

oauth2 = chilkat.CkOAuth2()

# Wish OAuth2 does not allow a localhost callback URI such as "http://localhost:<portNumber>/"
# For a desktop app, you must provide a script on your web server to redirect to "http://localhost/<portNumber>"

# Your applicaton must use your own public web server as an intermediate
# to receive and forward the redirect to localhost.
# See Using Your Web Server as an Intermediary for OAuth2 Redirect to localhost
oauth2.put_AppCallbackUrl("https://yourwebserver.com/OAuth2.php")
oauth2.put_ListenPort(3017)

oauth2.put_AuthorizationEndpoint("https://merchant.wish.com/v3/oauth/authorize")
oauth2.put_TokenEndpoint("https://merchant.wish.com/api/v3/oauth/access_token")

oauth2.put_UncommonOptions("EXCHANGE_CODE_FOR_TOKEN_USING_GET")

# Replace these with actual values.
oauth2.put_ClientId("WISH-CLIENT-ID")
oauth2.put_ClientSecret("WISH-CLIENT-SECRET")

oauth2.put_Scope("")

# Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
url = oauth2.startAuth()
if (oauth2.get_LastMethodSuccess() != True):
    print(oauth2.lastErrorText())
    sys.exit()

print("url = " + url)

# Launch the default browser on the system and navigate to the url.
# The LaunchBrowser method was added in Chilkat v10.1.2.
success = oauth2.LaunchBrowser(url)
if (success == False):
    print(oauth2.lastErrorText())
    sys.exit()

# Wait for the user to approve or deny authorization in the browser.
numMsWaited = 0
while (numMsWaited < 90000) and (oauth2.get_AuthFlowState() < 3) :
    oauth2.SleepMs(100)
    numMsWaited = numMsWaited + 100

# If the browser does not respond within the specified time, AuthFlowState will be:
# 
# 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
# 2: Waiting for Final Response - The thread is awaiting the final access token response.
# In either case, cancel the background task initiated by StartAuth.

if (oauth2.get_AuthFlowState() < 3):
    oauth2.Cancel()
    print("No response from the browser!")
    sys.exit()

# Check AuthFlowState to determine if authorization was granted, denied, or failed:
# 
# 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
# 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
# 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

if (oauth2.get_AuthFlowState() == 5):
    print("OAuth2 failed to complete.")
    print(oauth2.failureInfo())
    sys.exit()

if (oauth2.get_AuthFlowState() == 4):
    print("OAuth2 authorization was denied.")
    print(oauth2.accessTokenResponse())
    sys.exit()

if (oauth2.get_AuthFlowState() != 3):
    print("Unexpected AuthFlowState:" + str(oauth2.get_AuthFlowState()))
    sys.exit()

# Save the full JSON access token response to a file.
sbJson = chilkat.CkStringBuilder()
sbJson.Append(oauth2.accessTokenResponse())
sbJson.WriteFile("qa_data/tokens/wish.json","utf-8",False)

# The full JSON received looks like this:
# {
#   "message": "",
#   "code": 0,
#   "data": {
#     "access_token": "15af1c191c1243b029bc1660b5c08ce7",
#     "scopes": [
#       "epc:read",
#       "epc:write",
#       "fbs:read",
#       "fbs:write",
#       "fbw:read",
#       "fbw:write",
#       "infractions:read",
#       "infractions:write",
#       "insurance:read",
#       "insurance:write",
#       "loans:read",
#       "loans:write",
#       "merchant:read",
#       "merchant:write",
#       "notifications:read",
#       "notifications:write",
#       "orders:read",
#       "orders:write",
#       "payments:read",
#       "payments:write",
#       "penalties:read",
#       "penalties:write",
#       "product_boost:read",
#       "product_boost:write",
#       "products:read",
#       "products:write",
#       "ratings:read",
#       "ratings:write",
#       "returns:read",
#       "returns:write",
#       "tickets:read",
#       "tickets:write"
#     ],
#     "merchant_id": "5eb3f605178f5be2c784fa02",
#     "expiry_time": "2020-12-17T16:55:09.594+00:00",
#     "refresh_token": "55a38e44df674a1e859891624b2c4c23"
#   }
# }

print("OAuth2 authorization granted!")
print("Access Token = " + oauth2.accessToken())