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unban.lua
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unban.lua
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--[[
Copyright 2020 Matthew Hesketh <matthew@matthewhesketh.com>
This code is licensed under the MIT. See LICENSE for details.
]]
local unban = {}
local mattata = require('mattata')
local redis = require('libs.redis')
function unban:init()
unban.commands = mattata.commands(self.info.username):command('unban').table
unban.help = '/unban [user] - Unbans a user from the current chat. This command can only be used by moderators and administrators of a supergroup.'
end
function unban:on_message(message, _, language)
if message.chat.type ~= 'supergroup' then
return mattata.send_reply(message, language['errors']['supergroup'])
elseif not mattata.is_group_admin(message.chat.id, message.from.id) then
return mattata.send_reply(message, language['errors']['admin'])
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 = 'Which user would you like me to unban? You can specify this user by their @username or numerical ID.'
local success = mattata.send_force_reply(message, output)
if success then
redis:set('action:' .. message.chat.id .. ':' .. success.result.message_id, '/unban')
end
return
end
if tonumber(user) == nil and not user:match('^%@') then
user = '@' .. user
end
user = mattata.get_user(user) -- Resolve the username/ID to a user object.
if not user then
return mattata.send_reply(message, language['errors']['unknown'])
elseif user.result.id == self.info.id then
return
end
user = user.result
local status = mattata.get_chat_member(message.chat.id, user.id)
if not status then
return mattata.send_reply(message, language['errors']['generic'])
elseif status.result.status == 'creator' or status.result.status == 'administrator' then -- We won't try and unban administrators.
return mattata.send_reply(message, 'I cannot unban this user because they are a moderator or an administrator in this chat.')
elseif status.result.status == 'member' then -- Check if the user is in the group or not.
return mattata.send_reply(message, 'I cannot unban this user because they are still in this chat.')
end
local success = mattata.unban_chat_member(message.chat.id, user.id) -- Attempt to unban 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 isn't
-- an administrator in the group.
local output = 'I need to have administrative permissions in order to unban this user. Please amend this issue, and try again.'
return mattata.send_reply(message, output)
end
mattata.increase_administrative_action(message.chat.id, user.id, 'unbans')
reason = reason and ', for ' .. reason or ''
local admin_username = mattata.get_formatted_user(message.from.id, message.from.first_name, 'html')
local unbanned_username = mattata.get_formatted_user(user.id, user.first_name, 'html')
if mattata.get_setting(message.chat.id, 'log administrative actions') then
local log_chat = mattata.get_log_chat(message.chat.id)
local output = '%s <code>[%s]</code> has unbanned %s <code>[%s]</code> from %s <code>[%s]</code>%s.\n%s %s'
output = string.format(output, admin_username, message.from.id, unbanned_username, user.id, mattata.escape_html(message.chat.title), message.chat.id, reason, '#chat' .. tostring(message.chat.id):gsub('^-100', ''), '#user' .. user.id)
mattata.send_message(log_chat, output, 'html')
else
local output = '%s has unbanned %s%s.'
output = string.format(output, admin_username, unbanned_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 unban

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