[MlMt] RSVP/respond to ical/.ics calendar invite?

[Giovanni Lanzani]

Hi Benny,

Thanks for detailed answers. I've added some comments below.

On 18 Oct 2017, at 19:03, Benny Kjær Nielsen wrote:

> Hi Giovanni,
>
> you already got some replies. I'll try to fill the gaps.
>
> On 17 Oct 2017, at 23:18, Giovanni Lanzani wrote:
>
>>   - the status
>
> What kind of status?

You don't do many meetings, do you? :) It's accepted, rejected, maybe

>
>>   - optionally a remark.
>
> Remark?

When replying to a meeting you can add a remark such as: "I'll be 
available only for the first part of the meeting". The remark and the 
status should come, either as env variables or via stdin, from Mailmate 
I guess. Is that even possible? Remark is not a priority (I guess).

>> You can all have a look 
>> [here](https://stackoverflow.com/questions/4823574/sending-meeting-invitations-with-python) 
>> for a minimal Python implementation.
>>
>> Replying is much easier though: you just need to change the content 
>> of one line of the invite (assuming no notes are added).
>
> I'm going to try to ignore having to understand the details of the 
> calendar format and what can be done with invites. I'll just note that 
> hopefully MailMate can make this a bit simpler by taking care of 
> constructing the MIME message.
>
> Maybe I should just let you know when the attachments features 
> described above are available? :)
>
> Do you think they would be sufficient? Or do you need more detailed 
> control of the construction of the MIME message?

I don't know :)

Looking at the raw message of an invite, it looks like this. From Python 
I could just supply the base64 encoded content. If Mailmate would handle 
the rest: that'd be swell! :)

Cheers,

Giovanni

```
 From: Giovanni Lanzani <x>
To: xx <x>
Subject: xx
Thread-Topic: xx
Thread-Index: AdNH4ORC21n0rFd3Tyyx4cw7nfpI8AAAWUXAAAA13KM=
Date: Wed, 18 Oct 2017 09:31:35 +0200
Message-ID:
	<AM4PR07MB3220CD2A89F4713E378C2C6DCF4D0 at AM4PR07MB3220.eurprd07.prod.outlook.com>
Content-Language: en-US
X-MS-Has-Attach:
X-MS-Exchange-Organization-SCL: -1
X-MS-TNEF-Correlator:
X-MS-Exchange-Organization-RecordReviewCfmType: 0
Content-Type: multipart/alternative;
	boundary="_002_AM4PR07MB3220CD2A89F4713E378C2C6DCF4D0AM4PR07MB3220eurp_"
MIME-Version: 1.0

--_002_AM4PR07MB3220CD2A89F4713E378C2C6DCF4D0AM4PR07MB3220eurp_
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64


--_002_AM4PR07MB3220CD2A89F4713E378C2C6DCF4D0AM4PR07MB3220eurp_
Content-Type: text/calendar; charset="utf-8"; method=REPLY
Content-Transfer-Encoding: base64

Here the the base64 encoded ics should be present

--_002_AM4PR07MB3220CD2A89F4713E378C2C6DCF4D0AM4PR07MB3220eurp_--
```
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