Fetch a Single Message's MIME into a StringBuilder

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Demonstrates the Chilkat Imap.FetchSingleAsMimeSb method, which downloads one message's MIME into a StringBuilder. The first argument is the message id, the second (bUid) selects UID vs sequence number, and the third is the StringBuilder, which is cleared first. This example downloads a message by UID and prints the MIME length.

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    --  Demonstrates the Imap.FetchSingleAsMimeSb method, which downloads one message's MIME into a
    --  StringBuilder.  The 1st argument is the message id, the 2nd (bUid) selects UID vs sequence
    --  number, and the 3rd is the StringBuilder (cleared first).

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

    EXEC sp_OASetProperty @imap, 'Ssl', 1
    EXEC sp_OASetProperty @imap, 'Port', 993

    EXEC sp_OAMethod @imap, 'Connect', @success OUT, 'imap.example.com'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END
    EXEC sp_OAMethod @imap, 'Login', @success OUT, 'user@example.com', 'myPassword'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END

    EXEC sp_OAMethod @imap, 'SelectMailbox', @success OUT, 'Inbox'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END

    --  Search for the message ids to download, returning UIDs.
    DECLARE @wantUids int
    SELECT @wantUids = 1
    DECLARE @msgSet int
    EXEC @hr = sp_OACreate 'Chilkat.MessageSet', @msgSet OUT

    EXEC sp_OAMethod @imap, 'QueryMbx', @success OUT, 'ALL', @wantUids, @msgSet
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        EXEC @hr = sp_OADestroy @msgSet
        RETURN
      END

    EXEC sp_OAGetProperty @msgSet, 'Count', @iTmp0 OUT
    IF @iTmp0 > 0
      BEGIN
        DECLARE @uid int
        EXEC sp_OAMethod @msgSet, 'GetId', @uid OUT, 0

        --  Download the message's MIME into a StringBuilder.  The id is a UID.
        DECLARE @useUid int
        SELECT @useUid = 1
        DECLARE @sbMime int
        EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbMime OUT

        EXEC sp_OAMethod @imap, 'FetchSingleAsMimeSb', @success OUT, @uid, @useUid, @sbMime
        IF @success = 0
          BEGIN
            EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
            EXEC @hr = sp_OADestroy @imap
            EXEC @hr = sp_OADestroy @msgSet
            EXEC @hr = sp_OADestroy @sbMime
            RETURN
          END

        EXEC sp_OAGetProperty @sbMime, 'Length', @iTmp0 OUT

        PRINT 'MIME length: ' + @iTmp0 + ' chars'
      END

    EXEC sp_OAMethod @imap, 'Disconnect', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        EXEC @hr = sp_OADestroy @msgSet
        EXEC @hr = sp_OADestroy @sbMime
        RETURN
      END

    EXEC @hr = sp_OADestroy @imap
    EXEC @hr = sp_OADestroy @msgSet
    EXEC @hr = sp_OADestroy @sbMime


END
GO