(DataFlex) Lookup Google Drive Folder ID Given a Folder Path

Demonstrates how to find the Google Drive folder ID given a Folder Path.

This example demonstrates that we cannot simply query by folder name. (We can if every folder name is unique, but if not...) For example, imagine we have the following directory structure on Google Drive:

/AAWorkArea
/AAWorkArea/FolderA
/AAWorkArea/FolderB
/Folder2
/Folder2/FolderA

There are two directories named "FolderA". One is contained within AAWorkArea, and one is contained within "Folder2". To say it differently: One has the parent "AAWorkArea" and the other's parent is "Folder2".

To find the id of "/AAWorkArea/FolderA", we need to first find the id for "AAWorkArea", and then find the id for the folder with name="FolderA" and with AAWorkArea's id in FolderA's parents.

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Variant vGAuth
    Handle hoGAuth
    Handle hoRest
    Boolean iBAutoReconnect
    Handle hoJson
    String sJsonResponse
    Variant vSbQuery
    Handle hoSbQuery
    String sTemp1
    Boolean bTemp1

    Move True To iSuccess

    // It requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

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

    Get Create (RefClass(cComChilkatAuthGoogle)) To hoGAuth
    If (Not(IsComObjectCreated(hoGAuth))) Begin
        Send CreateComObject of hoGAuth
    End
    Set ComAccessToken Of hoGAuth To "GOOGLE-DRIVE-ACCESS-TOKEN"

    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    // Connect using TLS.
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "www.googleapis.com" 443 True iBAutoReconnect To iSuccess

    // Provide the authentication credentials (i.e. the access token)
    Get pvComObject of hoGAuth to vGAuth
    Get ComSetAuthGoogle Of hoRest vGAuth To iSuccess

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Set ComEmitCompact Of hoJson To False

    // Get the AAWorkArea folder that is in the Google Drive root.
    Get ComAddQueryParam Of hoRest "q" "'root' in parents and name='AAWorkArea'" To iSuccess
    Get ComFullRequestNoBody Of hoRest "GET" "/drive/v3/files" To sJsonResponse
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComLoad Of hoJson sJsonResponse To iSuccess
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "files[0].name" To sTemp1
    Showln "name: " sTemp1
    Get ComStringOf Of hoJson "files[0].id" To sTemp1
    Showln "id: " sTemp1
    Get ComStringOf Of hoJson "files[0].mimeType" To sTemp1
    Showln "mimeType: " sTemp1
    Showln "-"

    Get ComClearAllQueryParams Of hoRest To iSuccess

    // Now that we know the ID for the AAWorkarea directory, get the id for the FolderA having AAWorkArea as the parent.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbQuery
    If (Not(IsComObjectCreated(hoSbQuery))) Begin
        Send CreateComObject of hoSbQuery
    End
    Get ComAppend Of hoSbQuery "name = 'FolderA' and '" To iSuccess
    Get ComStringOf Of hoJson "files[0].id" To sTemp1
    Get ComAppend Of hoSbQuery sTemp1 To iSuccess
    Get ComAppend Of hoSbQuery "' in parents" To iSuccess
    Get pvComObject of hoSbQuery to vSbQuery
    Get ComAddQueryParamSb Of hoRest "q" vSbQuery To iSuccess

    Get ComFullRequestNoBody Of hoRest "GET" "/drive/v3/files" To sJsonResponse
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComLoad Of hoJson sJsonResponse To iSuccess
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "files[0].name" To sTemp1
    Showln "name: " sTemp1
    Get ComStringOf Of hoJson "files[0].id" To sTemp1
    Showln "id: " sTemp1
    Get ComStringOf Of hoJson "files[0].mimeType" To sTemp1
    Showln "mimeType: " sTemp1
    Showln "-"


End_Procedure