SQL Server

WhatsApp - Download/Retrieve Media

Demonstrates how to download media previously uploaded to the WhatsApp Business API client SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Implements the following CURL command:

    -- curl -X GET \
    --   https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f \
    --   -H 'Authorization: Bearer your-auth-token' \
    --   -o path/filename

    -- Use the following online tool to generate HTTP code from a CURL command
    -- Convert a cURL Command to HTTP Source Code

    -- Adds the "Authorization: Bearer your-auth-token" header.
    EXEC sp_OASetProperty @http, 'AuthToken', 'your-auth-token'

    DECLARE @bdResponseBody int
    EXEC @hr = sp_OACreate 'Chilkat.BinData', @bdResponseBody OUT

    EXEC sp_OAMethod @http, 'QuickGetBd', @success OUT, 'https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f', @bdResponseBody
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @bdResponseBody
        RETURN
      END
    DECLARE @respStatusCode int
    EXEC sp_OAGetProperty @http, 'LastStatus', @respStatusCode OUT

    PRINT 'response status code = ' + @respStatusCode

    EXEC sp_OAGetProperty @http, 'LastResponseHeader', @sTmp0 OUT
    PRINT 'response header = ' + @sTmp0

    IF @respStatusCode <> 200
      BEGIN

        PRINT 'Error response body:'
        EXEC sp_OAMethod @bdResponseBody, 'GetString', @sTmp0 OUT, 'utf-8'
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @bdResponseBody
        RETURN
      END
    EXEC sp_OAMethod @bdResponseBody, 'WriteFile', @success OUT, 'path/filename'

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @bdResponseBody


END
GO