(PowerBuilder) Get the Photos for a User

Demonstrates how to get the photos that the user has uploaded.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Oauth2
oleobject loo_Rest
integer li_Success
string ls_ResponseJson
oleobject loo_Json
oleobject loo_Dtime
integer li_BLocalTime
oleobject loo_Dt
integer i
integer li_NumItems
string ls_Name

// 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
loo_Oauth2 = create oleobject
// Use "Chilkat_9_5_0.OAuth2" for versions of Chilkat < 10.0.0
li_rc = loo_Oauth2.ConnectToNewObject("Chilkat.OAuth2")
if li_rc < 0 then
    destroy loo_Oauth2
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_Oauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

loo_Rest = create oleobject
// Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")

// Connect to Facebook.
li_Success = loo_Rest.Connect("graph.facebook.com",443,1,1)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Oauth2
    destroy loo_Rest
    return
end if

// Provide the authentication credentials (i.e. the access key)
loo_Rest.SetAuthOAuth2(loo_Oauth2)

// Indicate that we only want the photos the user has personally uploaded.
loo_Rest.AddQueryParam("type","uploaded")

// We could limit the number of photos by setting a limit.
loo_Rest.AddQueryParam("limit","5")

// Gets the 1st page of photos. (Not the actual image data, but the information about each photo.)
// See https://developers.facebook.com/docs/graph-api/reference/user/photos/ for more information.
ls_ResponseJson = loo_Rest.FullRequestNoBody("GET","/v2.7/me/photos")
if loo_Rest.LastMethodSuccess <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Oauth2
    destroy loo_Rest
    return
end if

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.EmitCompact = 0
loo_Json.Load(ls_ResponseJson)
Write-Debug loo_Json.Emit()

// A sample JSON response is shown below.  
// This is the code to parse the JSON response.

loo_Dtime = create oleobject
// Use "Chilkat_9_5_0.CkDateTime" for versions of Chilkat < 10.0.0
li_rc = loo_Dtime.ConnectToNewObject("Chilkat.CkDateTime")

li_BLocalTime = 1

i = 0
li_NumItems = loo_Json.SizeOfArray("data")
do while i < li_NumItems
    loo_Json.I = i
    Write-Debug "--- " + string(i)
    ls_Name = loo_Json.StringOf("data[i].name")
    if loo_Json.LastMethodSuccess = 1 then
        Write-Debug "name: " + ls_Name
    end if

    Write-Debug "id: " + loo_Json.StringOf("data[i].id")

    // We can load the created_time into a CkDateTime...
    loo_Dtime.SetFromTimestamp(loo_Json.StringOf("data[i].created_time"))
    loo_Dt = loo_Dtime.GetDtObj(li_BLocalTime)
    Write-Debug string(loo_Dt.Month) + "/" + string(loo_Dt.Day) + "/" + string(loo_Dt.Year) + "  " + string(loo_Dt.Hour) + ":" + string(loo_Dt.Minute)
    destroy loo_Dt
    i = i + 1
loop

// We can get the paging information as follows:
Write-Debug "URL for next page: " + loo_Json.StringOf("paging.next")
Write-Debug "before cursor: " + loo_Json.StringOf("paging.cursors.before")
Write-Debug "after cursor: " + loo_Json.StringOf("paging.cursors.after")

// This is a sample JSON response:
// { 
//   "data": [
//     {
//       "created_time": "2016-09-29T20:46:18+0000",
//       "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
//       "id": "10210199026347451"
//     },
//     { 
//       "created_time": "2016-09-19T02:00:42+0000",
//       "id": "10210091531240138"
//     },
//     { 
//       "created_time": "2016-09-19T02:00:42+0000",
//       "id": "10210091520620125"
//     },
//     { 
//       "created_time": "2016-09-19T01:59:46+0000",
//       "name": "I would've went for a swim had it not been for the sign",
//       "id": "10210091522299917"
//     },
//     { 
//       "created_time": "2016-09-12T00:37:35+0000",
//       "id": "10210023316834798"
//     }
//   ],
//   "paging": { 
//     "cursors": { 
//       "before": "MTAyMTAxOTkwMjYzNDc0NTEZD",
//       "after": "MTAyMTAwMjMzMTU4MzQ3OTgZD"
//     },
//     "next": "https:\/\/graph.facebook.com\/v2.7\/10224048320139890\/photos?type=uploaded&limit=5&after=MTAyMTAwMjMzMTU4MzQ3OTgZD"
//   }
// }
// 


destroy loo_Oauth2
destroy loo_Rest
destroy loo_Json
destroy loo_Dtime