#include <dpp/dpp.h>
#include <iomanip>
#include <sstream>

int main() {
	/* Setup the bot */
	dpp::cluster bot("token");

	bot.on_log(dpp::utility::cout_logger());

	/* The event is fired when someone issues your commands */
	bot.on_slashcommand([](const dpp::slashcommand_t& event) {

		/* Check which command they ran */
		if (event.command.get_command_name() == "join") {

			/* Get the guild */
			dpp::guild* g = dpp::find_guild(event.command.guild_id);

			/* Get the voice channel that the bot is currently in from this server (will return nullptr if we're not in a voice channel!) */
			auto current_vc = event.from()->get_voice(event.command.guild_id);

			bool join_vc = true;

			/* Are we in a voice channel? If so, let's see if we're in the right channel. */
			if (current_vc) {
				/* Find the channel id that the user is currently in */
				auto users_vc = g->voice_members.find(event.command.get_issuing_user().id);
				
				if (users_vc != g->voice_members.end() && current_vc->channel_id == users_vc->second.channel_id) {
					join_vc = false;
					
					/* We are on this voice channel, at this point we can send any audio instantly to vc:

					 * current_vc->send_audio_raw(...)
					 */
				} else {
					/* We are on a different voice channel. We should leave it, then join the new one 
					 * by falling through to the join_vc branch below.
					 */
					event.from()->disconnect_voice(event.command.guild_id);

					join_vc = true;
				}
			}

			/* If we need to join a vc at all, join it here if join_vc == true */
			if (join_vc) {
				/* Attempt to connect to a voice channel, returns false if we fail to connect. */

				/* The user issuing the command is not on any voice channel, we can't do anything */
				if (!g->connect_member_voice(*event.owner, event.command.get_issuing_user().id)) {
					event.reply("You don't seem to be in a voice channel!");
					return;
				}

				/* We are now connecting to a vc. Wait for on_voice_ready 
				 * event, and then send the audio within that event:
				 * 
				 * event.voice_client->send_audio_raw(...);
				 * 
				 * NOTE: We can't instantly send audio, as we have to wait for
				 * the connection to the voice server to be established!
				 */

				/* Tell the user we joined their channel. */
				event.reply("Joined your channel!");
			} else {
				event.reply("Don't need to join your channel as i'm already there with you!");
			}
		}
	});

	bot.on_ready([&bot](const dpp::ready_t& event) {
		if (dpp::run_once<struct register_bot_commands>()) {
			/* Create a new command. */
			bot.global_command_create(dpp::slashcommand("join", "Joins your voice channel.", bot.me.id));
		}
	});

	/* Start bot */
	bot.start(dpp::st_wait);

	return 0;
}
