Tcl Requires Chilkat v10.1.2+

Wish for Merchants -- Get OAuth2 Access Token for Desktop App

See more OAuth2 Examples

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

load ./chilkat.dll

set success 0

#  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.

set oauth2 [new_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
CkOAuth2_put_AppCallbackUrl $oauth2 "https://yourwebserver.com/OAuth2.php"
CkOAuth2_put_ListenPort $oauth2 3017

CkOAuth2_put_AuthorizationEndpoint $oauth2 "https://merchant.wish.com/v3/oauth/authorize"
CkOAuth2_put_TokenEndpoint $oauth2 "https://merchant.wish.com/api/v3/oauth/access_token"

CkOAuth2_put_UncommonOptions $oauth2 "EXCHANGE_CODE_FOR_TOKEN_USING_GET"

#  Replace these with actual values.
CkOAuth2_put_ClientId $oauth2 "WISH-CLIENT-ID"
CkOAuth2_put_ClientSecret $oauth2 "WISH-CLIENT-SECRET"

CkOAuth2_put_Scope $oauth2 ""

#  Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
set url [CkOAuth2_startAuth $oauth2]
if {[CkOAuth2_get_LastMethodSuccess $oauth2] != 1} then {
    puts [CkOAuth2_lastErrorText $oauth2]
    delete_CkOAuth2 $oauth2
    exit
}

puts "url = $url"

#  Launch the default browser on the system and navigate to the url.
#  The LaunchBrowser method was added in Chilkat v10.1.2.
set success [CkOAuth2_LaunchBrowser $oauth2 $url]
if {$success == 0} then {
    puts [CkOAuth2_lastErrorText $oauth2]
    delete_CkOAuth2 $oauth2
    exit
}

#  Wait for the user to approve or deny authorization in the browser.
set numMsWaited 0
while {expr [$numMsWaited < 90000]  &&  [[CkOAuth2_get_AuthFlowState $oauth2] < 3]} {
    CkOAuth2_SleepMs $oauth2 100
    set numMsWaited [expr $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 {[CkOAuth2_get_AuthFlowState $oauth2] < 3} then {
    CkOAuth2_Cancel $oauth2
    puts "No response from the browser!"
    delete_CkOAuth2 $oauth2
    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 {[CkOAuth2_get_AuthFlowState $oauth2] == 5} then {
    puts "OAuth2 failed to complete."
    puts [CkOAuth2_failureInfo $oauth2]
    delete_CkOAuth2 $oauth2
    exit
}

if {[CkOAuth2_get_AuthFlowState $oauth2] == 4} then {
    puts "OAuth2 authorization was denied."
    puts [CkOAuth2_accessTokenResponse $oauth2]
    delete_CkOAuth2 $oauth2
    exit
}

if {[CkOAuth2_get_AuthFlowState $oauth2] != 3} then {
    puts "Unexpected AuthFlowState:[CkOAuth2_get_AuthFlowState $oauth2]"
    delete_CkOAuth2 $oauth2
    exit
}

#  Save the full JSON access token response to a file.
set sbJson [new_CkStringBuilder]

CkStringBuilder_Append $sbJson [CkOAuth2_accessTokenResponse $oauth2]
CkStringBuilder_WriteFile $sbJson "qa_data/tokens/wish.json" "utf-8" 0

#  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"
#    }
#  }

puts "OAuth2 authorization granted!"
puts "Access Token = [CkOAuth2_accessToken $oauth2]"

delete_CkOAuth2 $oauth2
delete_CkStringBuilder $sbJson