(Excel) Iterate Pages in Feed

Demonstrates how to read the next page in the user's Facebook feed, and iterates through all of the pages in the Facebook feed.

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

' This example assumes a previously obtained an access token
Dim oauth2 As Chilkat.OAuth2
Set oauth2 = Chilkat.NewOAuth2
oauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

Dim rest As Chilkat.Rest
Set rest = Chilkat.NewRest

' Connect to Facebook and send the following GET request:

success = rest.Connect("graph.facebook.com",443,True,True)
If (success <> True) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' Provide the authentication credentials (i.e. the access key)
success = rest.SetAuthOAuth2(oauth2)

' Gets the 1st page in the user's feed.

responseJson = rest.FullRequestNoBody("GET","/v2.7/me/feed")
If (rest.LastMethodSuccess <> True) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim json As Chilkat.JsonObject
Set json = Chilkat.NewJsonObject
json.EmitCompact = False
success = json.Load(responseJson)

' 
' See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.
' 

Dim nextUrl As Chilkat.Url
Set nextUrl = Chilkat.NewUrl

' Get the URL for the next page in the feed.

nextUrlStr = json.StringOf("paging.next")
Do While json.LastMethodSuccess = True

    Debug.Print "Next page URL: "; nextUrlStr

    success = nextUrl.ParseUrl(nextUrlStr)

    ' Prepare for getting the next page in the feed.
    ' We can continue using the same REST object.
    ' If already connected, we'll continue using the existing connection.
    ' Otherwise, a new connection will automatically be made if needed.
    success = rest.ClearAllQueryParams()
    success = rest.AddQueryParams(nextUrl.Query)

    responseJson = rest.FullRequestNoBody("GET","/v2.7/me/feed")
    If (rest.LastMethodSuccess <> True) Then
        Debug.Print rest.LastErrorText
        Exit Sub
    End If

    success = json.Load(responseJson)
    ' See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.

    ' Get the URL for the next page.
    nextUrlStr = json.StringOf("paging.next")
Loop

Debug.Print "No more pages in the feed."