(PureBasic) Get the Photos for a User

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

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkDtObj.pb"
IncludeFile "CkRest.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkOAuth2.pb"
IncludeFile "CkDateTime.pb"

Procedure ChilkatExample()

    ; 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
    oauth2.i = CkOAuth2::ckCreate()
    If oauth2.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkOAuth2::setCkAccessToken(oauth2, "FACEBOOK-ACCESS-TOKEN")

    rest.i = CkRest::ckCreate()
    If rest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect to Facebook.
    success.i = CkRest::ckConnect(rest,"graph.facebook.com",443,1,1)
    If success <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkOAuth2::ckDispose(oauth2)
        CkRest::ckDispose(rest)
        ProcedureReturn
    EndIf

    ; Provide the authentication credentials (i.e. the access key)
    CkRest::ckSetAuthOAuth2(rest,oauth2)

    ; Indicate that we only want the photos the user has personally uploaded.
    CkRest::ckAddQueryParam(rest,"type","uploaded")

    ; We could limit the number of photos by setting a limit.
    CkRest::ckAddQueryParam(rest,"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.
    responseJson.s = CkRest::ckFullRequestNoBody(rest,"GET","/v2.7/me/photos")
    If CkRest::ckLastMethodSuccess(rest) <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkOAuth2::ckDispose(oauth2)
        CkRest::ckDispose(rest)
        ProcedureReturn
    EndIf

    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::setCkEmitCompact(json, 0)
    CkJsonObject::ckLoad(json,responseJson)
    Debug CkJsonObject::ckEmit(json)

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

    dtime.i = CkDateTime::ckCreate()
    If dtime.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    bLocalTime.i = 1

    dt.i
    i.i = 0
    numItems.i = CkJsonObject::ckSizeOfArray(json,"data")
    While i < numItems
        CkJsonObject::setCkI(json, i)
        Debug "--- " + Str(i)
        name.s = CkJsonObject::ckStringOf(json,"data[i].name")
        If CkJsonObject::ckLastMethodSuccess(json) = 1
            Debug "name: " + name
        EndIf

        Debug "id: " + CkJsonObject::ckStringOf(json,"data[i].id")

        ; We can load the created_time into a CkDateTime...
        CkDateTime::ckSetFromTimestamp(dtime,CkJsonObject::ckStringOf(json,"data[i].created_time"))
        dt = CkDateTime::ckGetDtObj(dtime,bLocalTime)
        Debug Str(CkDtObj::ckMonth(dt)) + "/" + Str(CkDtObj::ckDay(dt)) + "/" + Str(CkDtObj::ckYear(dt)) + "  " + Str(CkDtObj::ckHour(dt)) + ":" + Str(CkDtObj::ckMinute(dt))
        CkDtObj::ckDispose(dt)

        i = i + 1
    Wend

    ; We can get the paging information as follows:
    Debug "URL for next page: " + CkJsonObject::ckStringOf(json,"paging.next")
    Debug "before cursor: " + CkJsonObject::ckStringOf(json,"paging.cursors.before")
    Debug "after cursor: " + CkJsonObject::ckStringOf(json,"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"
    ;   }
    ; }
    ; 


    CkOAuth2::ckDispose(oauth2)
    CkRest::ckDispose(rest)
    CkJsonObject::ckDispose(json)
    CkDateTime::ckDispose(dtime)


    ProcedureReturn
EndProcedure