(Chilkat2-Python) Google Drive Refresh Access Token

Demonstrates how to automatically refresh the access token when it expires.

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import sys
import chilkat2

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

success = True

# This example uses a previously obtained access token having permission for the 
# Google Drive scope.

# The access token (and refresh token) was previously saved to a JSON file with this format:
# See Get Google Drive OAuth2 Access Token

# {
#   "access_token": "ya29.Gls-BsdxTWuenChv ... yzVIrXikkLxu5T6dy4I6GjADFardoz4Lruw",
#   "expires_in": 3600,
#   "refresh_token": "1/tMBJ ... 27D-Hk6rpQYBA",
#   "scope": "https://www.googleapis.com/auth/drive",
#   "token_type": "Bearer"
# }

json = chilkat2.JsonObject()
tokenFilePath = "qa_data/tokens/googleDrive.json"
json.LoadFile(tokenFilePath)

oauth2 = chilkat2.OAuth2()
oauth2.AccessToken = json.StringOf("access_token")
oauth2.RefreshToken = json.StringOf("refresh_token")

oauth2.AuthorizationEndpoint = "https://accounts.google.com/o/oauth2/v2/auth"
oauth2.TokenEndpoint = "https://www.googleapis.com/oauth2/v4/token"

#  Replace these with actual values.
oauth2.ClientId = "GOOGLE-CLIENT-ID"
oauth2.ClientSecret = "GOOGLE-CLIENT-SECRET"
oauth2.Scope = "https://www.googleapis.com/auth/drive"

# Use OAuth2 to refresh the access token.
success = oauth2.RefreshAccessToken()
if (success != True):
    print(oauth2.LastErrorText)
    sys.exit()

print(oauth2.AccessTokenResponse)

# Save the new access token to our JSON file (so we can refresh it again when needed).
json.UpdateString("access_token",oauth2.AccessToken)

fac = chilkat2.FileAccess()
fac.WriteEntireTextFile(tokenFilePath,json.Emit(),"utf-8",False)

print("Access Token Refreshed!")