mod_muc_markers/README.markdown
author Matthew Wild <mwild1@gmail.com>
Tue, 19 May 2020 14:06:42 +0100
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mod_muc_markers: Allow configuration of which marker to track, default to displayed
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# Introduction
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This module adds an internal Prosody API to retrieve the last displayed message by MUC occupants.
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## Requirements
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The clients must support XEP-0333, and the users to be tracked must be affiliated with the room.
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Currently due to lack of clarity about which id to use in acknowledgements in XEP-0333, this module
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rewrites the id attribute of stanzas to match the stanza (archive) id assigned by the MUC server.
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Oh yeah, and mod_muc_mam is required (or another module that adds a stanza-id), otherwise this module
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won't do anything.
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# Configuring
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## Enabling
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``` {.lua}
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Component "rooms.example.net" "muc"
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modules_enabled = {
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    "muc_markers";
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    "muc_mam";
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}
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```
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## Settings
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| Name            | Description                                                  | Default    |
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|-----------------|--------------------------------------------------------------|------------|
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| muc_marker_type | The type of marker to track (displayed/received/acknowledged)| "displayed"|
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# Developers
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## Example usage
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```
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local muc_markers = module:depends("muc_markers");
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function something()
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	local last_displayed_id = muc_markers.get_user_read_marker("user@localhost", "room@conference.localhost");
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end
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```