nick.lua
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nick.lua
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	--[[
	Copyright 2020 Matthew Hesketh <matthew@matthewhesketh.com>
	This code is licensed under the MIT. See LICENSE for details.
	]]

	local nick = {}
	local mattata = require('mattata')
	local redis = require('libs.redis')

	function nick:init(configuration)
	nick.commands = mattata.commands(self.info.username):command('nick'):command('nickname'):command('nn'):command('setnick').table
	nick.help = '/nick <text> - Sets your nickname to the given text. Your nickname can\'t be longer than ' .. configuration.limits.nick .. ' characters in length. Aliases: /nickname, /nn, /setnick.'
	end

	function nick.on_message(_, message, configuration)
	local input = mattata.input(message.text)
	if not input then
	local current = redis:hget('user:' .. message.from.id .. ':info', 'nickname')
	local output, parse_mode = nick.help
	if current then
	current = mattata.get_formatted_user(message.from.id, current, 'html')
	output = 'You are currently known as ' .. current .. '! To change this, send <code>/nick <text></code>'
	parse_mode = 'html'
	end
	return mattata.send_reply(message, output, parse_mode)
	elseif input:len() > configuration.limits.nick then
	return mattata.send_reply(message, 'Your nickname can\'t be longer than ' .. configuration.limits.nick .. ' characters in length!')
	end
	redis:hset('user:' .. message.from.id .. ':info', 'nickname', input)
	local user = mattata.get_formatted_user(message.from.id, input, 'html')
	return mattata.send_message(message.chat.id, string.format('You\'ll now be known as %s!', user), 'html')
	end

	return nick