SQL Server
Send GMail using REST API

Demonstrates how to send an email using the GMail REST API.
Chilkat SQL Server Downloads

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
    DECLARE @iTmp0 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 requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- Use the Chilkat Email API to create or load an email.
    DECLARE @email int
    EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- The From name/address don't need to be specified. 
    -- GMail will automatically use your Gmail address if the following 2 lines are omitted.
    EXEC sp_OASetProperty @email, 'FromName', 'My Name'
    EXEC sp_OASetProperty @email, 'FromAddress', 'my_account_name@gmail.com'

    EXEC sp_OAMethod @email, 'AddTo', @success OUT, 'John Smith', 'somebody@somewhere.com'
    -- To add more recipients, make additional calls to AddTo or AddCC, one per recipient...

    EXEC sp_OASetProperty @email, 'Subject', 'This is a test GMail email created using Chilkat.'
    EXEC sp_OASetProperty @email, 'Charset', 'utf-8'
    EXEC sp_OAMethod @email, 'AddPlainTextAlternativeBody', @success OUT, 'This is a test'

    -- Create an HTML email body with an embedded image.
    DECLARE @cid nvarchar(4000)
    EXEC sp_OAMethod @email, 'AddRelatedFile', @cid OUT, 'qa_data/jpg/starfish.jpg'
    DECLARE @sbHtml int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbHtml OUT

    EXEC sp_OAMethod @sbHtml, 'Append', @success OUT, '<html><body>This is a <b>test</b><br><img src="cid:STARFISH_CID"/></body></html>'
    DECLARE @numReplacements int
    EXEC sp_OAMethod @sbHtml, 'Replace', @numReplacements OUT, 'STARFISH_CID', @cid

    EXEC sp_OAMethod @sbHtml, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @email, 'AddHtmlAlternativeBody', @success OUT, @sTmp0

    -- OK.. we now have an HTML email with an embedded JPG image
    -- We'll need to get the full MIME of the email encoded to a base64url string.
    DECLARE @sbMime int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbMime OUT

    EXEC sp_OAMethod @email, 'GetMimeSb', @success OUT, @sbMime
    EXEC sp_OAMethod @sbMime, 'Encode', @success OUT, 'base64url', 'utf-8'

    -- The body of the HTTP request will be JSON..
    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'UpdateSb', @success OUT, 'raw', @sbMime

    -- Send the email...
    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT

    EXEC sp_OASetProperty @http, 'AuthToken', 'GMAIL-ACCESS-TOKEN'

    DECLARE @url nvarchar(4000)
    SELECT @url = 'https://www.googleapis.com/gmail/v1/users/me/messages/send'
    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp OUT

    EXEC sp_OAMethod @http, 'HttpJson', @success OUT, 'POST', @url, @json, 'application/json', @resp
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @email
        EXEC @hr = sp_OADestroy @sbHtml
        EXEC @hr = sp_OADestroy @sbMime
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    -- A status code of 200 indicates success.

    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    PRINT 'Response status code: ' + @iTmp0

    PRINT 'Response body:'
    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    PRINT @sTmp0

    -- The response body contains JSON.
    -- Use the online tool at Generate JSON Parsing Code
    -- to generate JSON parsing code.

    -- A sample successful JSON response:

    -- {
    --  "id": "166f0d4ac39e50bf",
    --  "threadId": "166f0d4ac39e50bf",
    --  "labelIds": [
    --   "SENT"
    --  ]
    -- }

    EXEC @hr = sp_OADestroy @email
    EXEC @hr = sp_OADestroy @sbHtml
    EXEC @hr = sp_OADestroy @sbMime
    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @resp


END
GO