SQL Server GMail: Lists the messages in the user's mailbox.

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Lists the messages in the user's mailbox.

Documentation: https://developers.google.com/gmail/api/v1/reference/users/messages/list

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @rest int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Rest', @rest OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    --   Provide a previously obtained OAuth2 access token.
    DECLARE @oauth2 int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.OAuth2', @oauth2 OUT

    EXEC sp_OASetProperty @oauth2, 'AccessToken', 'OAUTH2_ACCESS_TOKEN'
    EXEC sp_OAMethod @rest, 'SetAuthOAuth2', @success OUT, STR(@oauth2)

    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'www.googleapis.com', 443, 1, 1
    IF STR(@success) <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @oauth2
        RETURN
      END

    DECLARE @sbJson int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.StringBuilder', @sbJson OUT

    EXEC sp_OAMethod @rest, 'FullRequestNoBodySb', @success OUT, 'GET', '/gmail/v1/users/me/messages', STR(@sbJson)
    IF STR(@success) <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @oauth2
        EXEC @hr = sp_OADestroy @sbJson
        RETURN
      END

    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN

        EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
        PRINT 'Received error response code: ' + @iTmp0

        PRINT 'Response body:'
        EXEC sp_OAMethod @sbJson, 'GetAsString', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @oauth2
        EXEC @hr = sp_OADestroy @sbJson
        RETURN
      END

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'LoadSb', @success OUT, STR(@sbJson)

    --  The following code parses the JSON response.
    --  A sample JSON response is shown below the sample code.
    DECLARE @resultSizeEstimate int

    DECLARE @i int

    DECLARE @count_i int

    DECLARE @id nvarchar(4000)

    DECLARE @threadId nvarchar(4000)

    EXEC sp_OAMethod @json, 'IntOf', @resultSizeEstimate OUT, 'resultSizeEstimate'
    SELECT @i = 0
    EXEC sp_OAMethod @json, 'SizeOfArray', @count_i OUT, 'messages'
    WHILE STR(@i) < STR(@count_i)
      BEGIN
        EXEC sp_OASetProperty @json, 'I', STR(@i)
        EXEC sp_OAMethod @json, 'StringOf', @id OUT, 'messages[i].id'
        EXEC sp_OAMethod @json, 'StringOf', @threadId OUT, 'messages[i].threadId'
        SELECT @i = STR(@i) + 1
      END


    PRINT 'Example Completed.'

    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @oauth2
    EXEC @hr = sp_OADestroy @sbJson
    EXEC @hr = sp_OADestroy @json


END
GO

Sample JSON Response Body

{
  "messages": [
    {
      "id": "15fc237e79da4174",
      "threadId": "15fc237e79da4174"
    },
    {
      "id": "15fc23688c553739",
      "threadId": "15fc23688c553739"
    },
    {
      "id": "15fbd37d3a8f9950",
      "threadId": "15fbd37d3a8f9950"
    },
    {
      "id": "15fb5e49b822ac1d",
      "threadId": "15fb5e49b822ac1d"
    },
    {
      "id": "15fb5e49b7a0739b",
      "threadId": "15fb5e49b7a0739b"
    }
  ],
  "resultSizeEstimate": 5
}