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ban.lua
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ban.lua
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--[[
Copyright 2020 Matthew Hesketh <matthew@matthewhesketh.com>
This code is licensed under the MIT. See LICENSE for details.
]]
local ban = {}
local mattata = require('mattata')
function ban:init()
ban.commands = mattata.commands(self.info.username):command('ban').table
ban.help = '/ban [user] - Bans a user from the current chat. This command can only be used by moderators and administrators of a supergroup.'
end
function ban:on_message(message, _, language)
if message.chat.type ~= 'supergroup' then
local output = language['errors']['supergroup']
return mattata.send_reply(message, output)
elseif not mattata.is_group_admin(message.chat.id, message.from.id) then
local output = language['errors']['admin']
return mattata.send_reply(message, output)
end
local reason = false
local user = false
local input = mattata.input(message)
-- check the message object for any users this command
-- is intended to be executed on
if message.reply then
user = message.reply.from.id
if input then
reason = input
end
elseif input and input:match(' ') then
user, reason = input:match('^(.-) (.-)$')
elseif input then
user = input
end
if not user then
local output = language['ban']['1']
local success = mattata.send_force_reply(message, output)
if success then
mattata.set_command_action(message.chat.id, success.result.message_id, '/ban')
end
return
end
if reason and type(reason) == 'string' and reason:match('^[Ff][Oo][Rr] ') then
reason = reason:match('^[Ff][Oo][Rr] (.-)$')
end
if tonumber(user) == nil and not user:match('^%@') then
user = '@' .. user
end
local user_object = mattata.get_user(user) or mattata.get_chat(user) -- resolve the username/ID to a user object
if not user_object then
return mattata.send_reply(message, language.errors.unknown)
elseif user_object.result.id == self.info.id then
return false -- don't let the bot ban itself
end
user_object = user_object.result
local status = mattata.get_chat_member(message.chat.id, user_object.id)
local is_admin = mattata.is_group_admin(message.chat.id, user_object.id)
if not status then
local output = language['errors']['generic']
return mattata.send_reply(message, output)
elseif is_admin then -- we won't try and ban moderators and administrators.
local output = language['ban']['2']
return mattata.send_reply(message, output)
elseif status.result.status == 'kicked' then -- check if the user has already been kicked
local output = language['ban']['4']
return mattata.send_reply(message, output)
end
local success = mattata.ban_chat_member(message.chat.id, user_object.id) -- attempt to ban the user from the group
if not success then -- since we've ruled everything else out, it's safe to say if it wasn't a success then the bot just isn't an administrator in the group
local output = language['ban']['5']
return mattata.send_reply(message, output)
end
mattata.increase_administrative_action(message.chat.id, user_object.id, 'bans')
reason = reason and ', for ' .. reason or ''
local admin_username = mattata.get_formatted_user(message.from.id, message.from.first_name, 'html')
local banned_username = mattata.get_formatted_user(user_object.id, user_object.first_name, 'html')
local output
if mattata.get_setting(message.chat.id, 'log administrative actions') then
local log_chat = mattata.get_log_chat(message.chat.id)
output = string.format(language['ban']['6'], admin_username, message.from.id, banned_username, user_object.id, mattata.escape_html(message.chat.title), message.chat.id, reason, '#chat' .. tostring(message.chat.id):gsub('^-100', ''), '#user' .. user_object.id)
mattata.send_message(log_chat, output, 'html')
else
output = string.format(language['ban']['7'], admin_username, banned_username, reason)
mattata.send_message(message.chat.id, output, 'html')
end
if message.reply and mattata.get_setting(message.chat.id, 'delete reply on action') then
mattata.delete_message(message.chat.id, message.reply.message_id)
end
return mattata.delete_message(message.chat.id, message.message_id)
end
return ban

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