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channel.lua
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channel.lua
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--[[
Based on a plugin by topkecleon. Licensed under GNU AGPLv3
https://github.com/topkecleon/otouto/blob/master/LICENSE.
Copyright 2020 Matthew Hesketh <matthew@matthewhesketh.com>
This code is licensed under the MIT. See LICENSE for details.
]]
local channel = {}
local mattata = require('mattata')
local socket = require('socket')
local json = require('dkjson')
local redis = require('libs.redis')
function channel:init()
channel.commands = mattata.commands(self.info.username):command('channel'):command('ch'):command('msg').table
channel.help = '/channel <channel> <message> - Sends a message to a Telegram channel/group. The channel/group can be specified via ID or username. Messages can be formatted with Markdown. Users can only send messages to channels/groups they own/administrate. Aliases: /ch, /msg.'
end
function channel:on_callback_query(callback_query, message, configuration, language)
local request = redis:hget('temp:channel', callback_query.data)
if not request then
return false
end
request = json.decode(request)
if request.from ~= callback_query.from.id then
return mattata.answer_callback_query(callback_query.id, language['channel']['1'])
elseif not mattata.is_group_admin(request.target, request.from) then
return mattata.answer_callback_query(callback_query.id, language['channel']['2'])
end
local success = mattata.send_message(request.target, request.text, 'markdown')
if not success then
return mattata.edit_message_text(message.chat.id, message.message_id, language['channel']['3'])
end
redis:hdel('temp:channel', callback_query.data)
return mattata.edit_message_text(message.chat.id, message.message_id, language['channel']['4'])
end
function channel:on_message(message, configuration, language)
if message.chat.type == 'channel' then
return false
end
local input = mattata.input(message)
if not input then
return mattata.send_reply(message, channel.help)
end
local target = mattata.get_word(input)
if tonumber(target) == nil and not target:match('^@') then
target = '@' .. target
end
target = mattata.get_chat_id(target) or target
local admin_list = mattata.get_chat_administrators(target)
if not admin_list and not mattata.is_global_admin(message.from.id) then
return mattata.send_reply(message, language['channel']['5'])
elseif not mattata.is_global_admin(message.from.id) then -- Make configured owners an exception.
local is_admin = false
for _, admin in ipairs(admin_list.result) do
if admin.user.id == message.from.id then
is_admin = true
end
end
if not is_admin then
return mattata.send_reply(message, language['channel']['6'])
end
end
local text = input:match(' (.-)$')
if not text then
return mattata.send_reply(message, language['channel']['7'])
end
local request_id = tostring(socket.gettime()):gsub('%D', '')
local keyboard = json.encode({
['inline_keyboard'] = {
{
{
['text'] = language['channel']['9'],
['callback_data'] = 'channel:' .. request_id
}
}
}
})
local temp_text = '*' .. language['channel']['8'] .. '*\n\n' .. text
local success = mattata.send_message(message.chat.id, temp_text, 'markdown', true, false, nil, keyboard)
if not success then
return mattata.send_reply(message, language['channel']['10'])
end
local payload = json.encode({
['target'] = target,
['text'] = text,
['from'] = message.from.id
})
redis:hset('temp:channel', request_id, payload)
return success
end
return channel

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