neocomm/src/channel.cpp
2017-11-21 16:34:50 +01:00

117 lines
2.9 KiB
C++

/*
* Copyright (C) 2017 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
* Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "neocomm.h"
#include "error.hpp"
#include "globals.hpp"
std::map<std::string, struct channel_info> channels;
static std::mt19937_64 rand_dev { dht::crypto::random_device{}() };
static std::uniform_int_distribution<dht::Value::Id> rand_id;
static std::map<time_t, int> sent_messages;
static std::string channel_list;
int NeoComm_join_channel(const char *channel_name) {
if(not node.isRunning())
{
add_error("NeoComm must be initialized.");
return 0;
}
else if(channel_name[0] != '#')
{
add_error("Channel name must start with `#'.");
return 0;
}
const std::string s_chan_name(channel_name);
if(s_chan_name.empty())
{
add_error("Chan name is empty.");
return 0;
}
// if it already exists then just exit
if(channels.find(s_chan_name) not_eq channels.end())
return 1;
dht::InfoHash chan_hash(s_chan_name);
{
static constexpr dht::InfoHash INVALID_ID {};
if(chan_hash == INVALID_ID)
chan_hash = dht::InfoHash::get(s_chan_name);
}
channels[s_chan_name] = {
/*.hash =*/ chan_hash,
/*.token =*/ node.listen<dht::ImMessage>(chan_hash,
[&](dht::ImMessage &&msg) {
channels[s_chan_name].msgs.push(msg);
return true;
}),
/*.msgs =*/ std::queue<dht::ImMessage>()
};
return 1;
}
int NeoComm_leave_channel(const char *channel_name) {
if(not node.isRunning())
{
add_error("NeoComm must be initialized.");
return 0;
}
else if(channel_name[0] != '#')
{
add_error("Channel name must start with `#'.");
return 0;
}
const std::string s_chan_name(channel_name);
if(channels.find(s_chan_name) == channels.end())
{
add_error("Channel does not exist.");
return 0;
}
else if(s_chan_name.empty())
{
add_error("Chan name is empty.");
return 0;
}
struct channel_info *channel = &channels[s_chan_name];
channel->token.wait();
node.cancelListen(channel->hash, channel->token.get());
channels.erase(s_chan_name);
return 1;
}
const char *NeoComm_get_channel_list() {
channel_list.clear();
for(auto &i : channels)
channel_list += i.first + " ";
return channel_list.c_str();
}
unsigned int NeoComm_get_num_channels() {
return channels.size();
}