Create a new stack and edit its script or edit the script of an existing stack. We will change the values of the kClientID and kClientSecret constants when we have created the Dropbox App.

constant kAuthURL = "https://www.dropbox.com/oauth2/authorize"
constant kTokenURL = "https://api.dropboxapi.com/oauth2/token"
constant kClientID = "xxxxxxxxx"
constant kClientSecret = "xxxxxxxxx"
constant kScopes = ""
constant kPort = "54303"

command showAccountInfo
   OAuth2 kAuthURL, kTokenURL, kClientID, kClientSecret, kScopes, kPort
   
   if the result is not empty then
      answer error "Not authorized!"
   else
      local tAuth
      put it into tAuth
      
      set the httpHeaders to "Content-type: application/json; charset=UTF-8" & \
            return & "Authorization: Bearer " & tAuth["access_token"]
      
      local tPost, tUrl
      put "{" & quote & "account_id" & quote & ":" && quote & tAuth["account_id"] & quote & "}" \
            into tPost
      put "https://api.dropboxapi.com/2/users/get_account" into tUrl
      post tPost to url tUrl
      
      local tAccount 
      put jsonToArray(it) into tAccount
      
      local tList
      repeat for each line tLine in the keys of tAccount
         put tLine && ":" &&  tAccount[tLine] & return after tList
      end repeat
      delete last char of tList
      answer tList
   end if
end showAccountInfo

In your browser go to https://www.dropbox.com and sign into your account Then browse to Dropbox' App Console  and click the `Create App` button.

Enter a name for your Dropbox app, fill in the details and then click `Create App`

In the next page, in the Settings tab, you can see the app's client ID and client secret which we will need later in the lesson.

Scroll down in the Settings tab, and write down the value of the "App Key" field. This is the client ID.

Click "Show" in the value of the "App Secret" field. This is the client secret

Notice in the image above the App Key (i.e. the client secret) is blurred. This value should not be made public. For LiveCode apps the safest way to include the value in a standalone application is in a password protected stack script.

The OAuth2 library presents an authorization dialog and accepts connections on the loopback address 127.0.0.1 so that it can handle redirects in the OAuth2 flow. In the "Redirect URIs" field add a redirect url of http://127.0.0.1:54303/

Make sure you do not omit the trailing slash!

Then press the Add button:

Next step is to set the required permissions. Go to the Permissions tab.

For our use case (i.e. getting info about the Dropbox account), we need the following permissions:

• account_info.read
• sharing.read

We will use a button that will call the showAccountInfo command:

on mouseUp
   showAccountInfo
end mouseUp

In the stack script, replace the values of kClientID and kClientSecret:

constant kClientID = "xxxxxxxxx"

constant kClientSecret = "xxxxxxxxx"

with the values of your own client ID (i.e. your App Key) and client secret (i.e. your App Secret)

Press the button. You should see an OAuth2 dialog asking you to login to Dropbox. Enter your Dropbox credentials and press Sign in:

In the next window, press Continue:

In the next window, you should see the required permissions for your app. These are the ones you had checked previously when creating the app. Click Allow:

Now, the api is getting info about your account, and it returns it to the LC app, which displays it using an answer dialog:

Add the OAuth2 library to a standalone by checking `OAuth2` on the `Inclusions` pane of the `Standalone Application Settings` dialog. This will include the OAuth2 library and it's dependency mergJSON.

Note: In this example, we used OAuth2 and the Dropbox API to get back some info about the account. You can use the Dropbox API for fetching other information as well. In this case, you 'll need a different endpoint, i.e. a URL other than "https://api.dropboxapi.com/2/users/get_account"

You'll also need different permissions, and possibly slightly different syntax for the post command. For more details, you can have a look at the Dropbox API documentation here:

https://www.dropbox.com/developers/documentation/http/documentation