leavefed.lua
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leavefed.lua
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	--[[
	mattata v2.0 - Federation: leavefed

	Removes the current chat from its federation. Requires group admin.
	]]

	local tools = require('telegram-bot-lua.tools')

	local plugin = {}
	plugin.name = 'leavefed'
	plugin.category = 'admin'
	plugin.description = 'Remove this chat from its federation.'
	plugin.commands = { 'leavefed' }
	plugin.help = '/leavefed - Remove this chat from its current federation.'
	plugin.group_only = true
	plugin.admin_only = true

	function plugin.on_message(api, message, ctx)
	local chat_id = message.chat.id

	-- Check if the chat is in a federation
	local existing = ctx.db.execute(
	'SELECT f.id, f.name FROM federations f JOIN federation_chats fc ON f.id = fc.federation_id WHERE fc.chat_id = $1',
	{ chat_id }
	)
	if not existing or #existing == 0 then
	return api.send_message(
	chat_id,
	'This chat is not part of any federation.',
	'html'
	)
	end

	local fed = existing[1]

	ctx.db.execute(
	'DELETE FROM federation_chats WHERE federation_id = $1 AND chat_id = $2',
	{ fed.id, chat_id }
	)

	return api.send_message(
	chat_id,
	string.format(
	'This chat has left the federation <b>%s</b>.',
	tools.escape_html(fed.name)
	),
	'html'
	)
	end

	return plugin