language.lua
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language.lua
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	--[[
	mattata v2.0 - Language Middleware
	Loads the appropriate language file into ctx.lang based on user/group settings.
	]]

	local language_mw = {}
	language_mw.name = 'language'

	local i18n = require('src.core.i18n')
	local session = require('src.core.session')

	function language_mw.run(ctx, message)
	local lang_code = 'en_gb'

	if message.from then
	-- Check user language setting
	local user_lang = session.get_setting(message.from.id, 'language')
	or (message.from.language_code and i18n.exists(message.from.language_code) and message.from.language_code)
	if user_lang and i18n.exists(user_lang) then
	lang_code = user_lang
	end
	end

	-- Check group language override
	if ctx.is_group and message.chat then
	local force_group = session.get_setting(message.chat.id, 'force group language')
	if force_group then
	local group_lang = session.get_setting(message.chat.id, 'group language') or 'en_gb'
	if i18n.exists(group_lang) then
	lang_code = group_lang
	end
	end
	end

	ctx.lang_code = lang_code
	ctx.lang = i18n.get(lang_code)
	return ctx, true
	end

	return language_mw