(SQL Server) List all Pages of Files in Google Drive

Demonstrates how iterate over pages to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

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

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @iTmp1 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 1

    -- 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.

    DECLARE @gAuth int
    -- Use "Chilkat_9_5_0.AuthGoogle" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.AuthGoogle', @gAuth OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @gAuth, 'AccessToken', 'GOOGLE-DRIVE-ACCESS-TOKEN'

    DECLARE @rest int
    -- Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT

    -- Connect using TLS.
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 1
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'www.googleapis.com', 443, 1, @bAutoReconnect

    -- Provide the authentication credentials (i.e. the access token)
    EXEC sp_OAMethod @rest, 'SetAuthGoogle', @success OUT, @gAuth

    -- Get 5 results per page for testing.  (The default page size is 100, with a max of 1000.
    EXEC sp_OAMethod @rest, 'AddQueryParam', @success OUT, 'pageSize', '5'

    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    DECLARE @i int

    DECLARE @numFiles int

    -- Send the request for the 1st page.
    DECLARE @jsonResponse nvarchar(4000)
    EXEC sp_OAMethod @rest, 'FullRequestNoBody', @jsonResponse OUT, 'GET', '/drive/v3/files'

    DECLARE @pageNumber int
    SELECT @pageNumber = 1
    DECLARE @pageToken nvarchar(4000)

    DECLARE @bContinueLoop int
    EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp1 OUT
    SELECT @bContinueLoop = @iTmp0 and (@iTmp1 = 200)

    WHILE @bContinueLoop = 1
      BEGIN



        PRINT '---- Page ' + @pageNumber + ' ----'

        -- Iterate over each file in the response and show the name, id, and mimeType.
        EXEC sp_OAMethod @json, 'Load', @success OUT, @jsonResponse

        -- See the sample JSON response at the bottom of this example.
        EXEC sp_OAMethod @json, 'SizeOfArray', @numFiles OUT, 'files'
        SELECT @i = 0
        WHILE @i < @numFiles
          BEGIN
            EXEC sp_OASetProperty @json, 'I', @i

            EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'files[i].name'
            PRINT 'name: ' + @sTmp0

            EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'files[i].id'
            PRINT 'id: ' + @sTmp0

            EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'files[i].mimeType'
            PRINT 'mimeType: ' + @sTmp0

            PRINT '-'
            SELECT @i = @i + 1
          END

        -- Get the next page of files.
        -- If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
        -- for the next request.   If no "nextPageToken" was present, then this was the last page of files.
        EXEC sp_OAMethod @json, 'StringOf', @pageToken OUT, 'nextPageToken'
        SELECT @bContinueLoop = 0
        DECLARE @bHasMorePages int
        EXEC sp_OAGetProperty @json, 'LastMethodSuccess', @bHasMorePages OUT
        IF @bHasMorePages = 1
          BEGIN
            EXEC sp_OAMethod @rest, 'ClearAllQueryParams', @success OUT
            EXEC sp_OAMethod @rest, 'AddQueryParam', @success OUT, 'pageSize', '5'
            EXEC sp_OAMethod @rest, 'AddQueryParam', @success OUT, 'pageToken', @pageToken
            EXEC sp_OAMethod @rest, 'FullRequestNoBody', @jsonResponse OUT, 'GET', '/drive/v3/files'
            EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
            EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp1 OUT
            SELECT @bContinueLoop = @iTmp0 and (@iTmp1 = 200)
            SELECT @pageNumber = @pageNumber + 1
          END

      END

    EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @gAuth
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    -- A successful response will have a status code equal to 200.
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN

        EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
        PRINT 'response status code = ' + @iTmp0

        EXEC sp_OAGetProperty @rest, 'ResponseStatusText', @sTmp0 OUT
        PRINT 'response status text = ' + @sTmp0

        EXEC sp_OAGetProperty @rest, 'ResponseHeader', @sTmp0 OUT
        PRINT 'response header: ' + @sTmp0

        PRINT 'response JSON: ' + @jsonResponse
        EXEC @hr = sp_OADestroy @gAuth
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    -- A successful JSON response looks like this:
    -- {
    --  "kind": "drive#fileList",
    --  "files": [
    --    {
    --      "kind": "drive#file",
    --      "id": "0B53Q6OSTWYolenpjTEU4ekJlQUU",
    --      "name": "test",
    --      "mimeType": "application/vnd.google-apps.folder"
    --    },
    --    {
    --      "kind": "drive#file",
    --      "id": "0B53Q6OSTWYolRm4ycjZtdXhRaEE",
    --      "name": "starfish4.jpg",
    --      "mimeType": "image/jpeg"
    --    },
    --    {
    --      "kind": "drive#file",
    --      "id": "0B53Q6OSTWYolMWt2VzN0Qlo1UjA",
    --      "name": "hamlet2.xml",
    --      "mimeType": "text/xml"
    --    },
    -- ...
    --    {
    --      "kind": "drive#file",
    --      "id": "0B53Q6OSTWYolc3RhcnRlcl9maWxlX2Rhc2hlclYw",
    --      "name": "Getting started",
    --      "mimeType": "application/pdf"
    --    }
    --  ]
    -- }

    EXEC @hr = sp_OADestroy @gAuth
    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @json


END
GO