1 files changed, 268 insertions, 0 deletions
diff --git a/src/bot/master.rs b/src/bot/master.rs
new file mode 100644
index 0000000..2488064
--- /dev/null
+++ b/src/bot/master.rs
@@ -0,0 +1,268 @@
+use std::collections::HashMap;
+use std::future::Future;
+use std::sync::{Arc, Mutex};
+
+use futures::future::{FutureExt, TryFutureExt};
+use futures01::future::Future as Future01;
+use log::info;
+use rand::{rngs::SmallRng, seq::SliceRandom, SeedableRng};
+use serde::{Deserialize, Serialize};
+use tsclientlib::{ClientId, ConnectOptions, Identity, MessageTarget};
+
+use crate::audio_player::AudioPlayerError;
+use crate::teamspeak::TeamSpeakConnection;
+
+use crate::Args;
+
+use crate::bot::{MusicBot, MusicBotArgs, MusicBotMessage};
+
+pub struct MasterBot {
+    config: Arc<MasterConfig>,
+    music_bots: Arc<Mutex<MusicBots>>,
+    teamspeak: Arc<TeamSpeakConnection>,
+}
+
+struct MusicBots {
+    rng: SmallRng,
+    available_names: Vec<usize>,
+    available_ids: Vec<usize>,
+    connected_bots: HashMap<String, Arc<MusicBot>>,
+}
+
+impl MasterBot {
+    pub async fn new(args: MasterArgs) -> (Arc<Self>, impl Future) {
+        let (tx, mut rx) = tokio02::sync::mpsc::unbounded_channel();
+        let tx = Arc::new(Mutex::new(tx));
+        info!("Starting in TeamSpeak mode");
+
+        let mut con_config = ConnectOptions::new(args.address.clone())
+            .version(tsclientlib::Version::Linux_3_3_2)
+            .name(args.master_name.clone())
+            .identity(args.id)
+            .log_commands(args.verbose >= 1)
+            .log_packets(args.verbose >= 2)
+            .log_udp_packets(args.verbose >= 3);
+
+        if let Some(channel) = args.channel {
+            con_config = con_config.channel(channel);
+        }
+
+        let connection = Arc::new(
+            TeamSpeakConnection::new(tx.clone(), con_config)
+                .await
+                .unwrap(),
+        );
+
+        let config = Arc::new(MasterConfig {
+            master_name: args.master_name,
+            address: args.address,
+            names: args.names,
+            ids: args.ids,
+            local: args.local,
+            verbose: args.verbose,
+        });
+
+        let name_count = config.names.len();
+        let id_count = config.ids.len();
+
+        let music_bots = Arc::new(Mutex::new(MusicBots {
+            rng: SmallRng::from_entropy(),
+            available_names: (0..name_count).collect(),
+            available_ids: (0..id_count).collect(),
+            connected_bots: HashMap::new(),
+        }));
+
+        let bot = Arc::new(Self {
+            config,
+            music_bots,
+            teamspeak: connection,
+        });
+
+        bot.teamspeak
+            .set_description("Poke me if you want a music bot!");
+
+        let cbot = bot.clone();
+        let msg_loop = async move {
+            loop {
+                while let Some(msg) = rx.recv().await {
+                    cbot.on_message(msg).await.unwrap();
+                }
+            }
+        };
+
+        (bot, msg_loop)
+    }
+
+    fn build_bot_args_for(&self, id: ClientId) -> Option<MusicBotArgs> {
+        let channel = self
+            .teamspeak
+            .channel_of_user(id)
+            .expect("Can find poke sender");
+
+        if channel == self.teamspeak.my_channel() {
+            self.teamspeak.send_message_to_user(
+                id,
+                &format!(
+                    "Joining the channel of \"{}\" is not allowed",
+                    self.config.master_name
+                ),
+            );
+            return None;
+        }
+
+        let MusicBots {
+            ref mut rng,
+            ref mut available_names,
+            ref mut available_ids,
+            ref connected_bots,
+        } = &mut *self.music_bots.lock().expect("Mutex was not poisoned");
+
+        for (_, bot) in connected_bots {
+            if bot.my_channel() == channel {
+                self.teamspeak.send_message_to_user(
+                    id,
+                    &format!(
+                        "\"{}\" is already in this channel. \
+                         Multiple bots in one channel are not allowed.",
+                        bot.name()
+                    ),
+                );
+                return None;
+            }
+        }
+
+        let channel_path = self
+            .teamspeak
+            .channel_path_of_user(id)
+            .expect("can find poke sender");
+
+        available_names.shuffle(rng);
+        let name_index = match available_names.pop() {
+            Some(v) => v,
+            None => {
+                self.teamspeak
+                    .send_message_to_user(id, "Out of names. Too many bots are already connected!");
+                return None;
+            }
+        };
+        let name = self.config.names[name_index].clone();
+
+        available_ids.shuffle(rng);
+        let id_index = match available_ids.pop() {
+            Some(v) => v,
+            None => {
+                self.teamspeak.send_message_to_user(
+                    id,
+                    "Out of identities. Too many bots are already connected!",
+                );
+                return None;
+            }
+        };
+
+        let id = self.config.ids[id_index].clone();
+
+        let cmusic_bots = self.music_bots.clone();
+        let disconnect_cb = Box::new(move |n, name_index, id_index| {
+            let mut music_bots = cmusic_bots.lock().expect("Mutex was not poisoned");
+            music_bots.connected_bots.remove(&n);
+            music_bots.available_names.push(name_index);
+            music_bots.available_ids.push(id_index);
+        });
+
+        info!("Connecting to {} on {}", channel_path, self.config.address);
+
+        Some(MusicBotArgs {
+            name,
+            name_index,
+            id_index,
+            local: self.config.local,
+            address: self.config.address.clone(),
+            id,
+            channel: channel_path,
+            verbose: self.config.verbose,
+            disconnect_cb,
+        })
+    }
+
+    async fn spawn_bot_for(&self, id: ClientId) {
+        if let Some(bot_args) = self.build_bot_args_for(id) {
+            let (bot, fut) = MusicBot::new(bot_args).await;
+            tokio::spawn(fut.unit_error().boxed().compat().map(|_| ()));
+            let mut music_bots = self.music_bots.lock().expect("Mutex was not poisoned");
+            music_bots
+                .connected_bots
+                .insert(bot.name().to_string(), bot);
+        }
+    }
+
+    async fn on_message(&self, message: MusicBotMessage) -> Result<(), AudioPlayerError> {
+        if let MusicBotMessage::TextMessage(message) = message {
+            if let MessageTarget::Poke(who) = message.target {
+                info!("Poked by {}, creating bot for their channel", who);
+                self.spawn_bot_for(who).await;
+            }
+        }
+
+        Ok(())
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct MasterArgs {
+    #[serde(default = "default_name")]
+    pub master_name: String,
+    #[serde(default = "default_local")]
+    pub local: bool,
+    pub address: String,
+    pub channel: Option<String>,
+    #[serde(default = "default_verbose")]
+    pub verbose: u8,
+    pub names: Vec<String>,
+    pub id: Identity,
+    pub ids: Vec<Identity>,
+}
+
+fn default_name() -> String {
+    String::from("PokeBot")
+}
+
+fn default_local() -> bool {
+    false
+}
+
+fn default_verbose() -> u8 {
+    0
+}
+
+impl MasterArgs {
+    pub fn merge(self, args: Args) -> Self {
+        let address = args.address.unwrap_or(self.address);
+        let local = args.local || self.local;
+        let channel = args.master_channel.or(self.channel);
+        let verbose = if args.verbose > 0 {
+            args.verbose
+        } else {
+            self.verbose
+        };
+
+        Self {
+            master_name: self.master_name,
+            names: self.names,
+            ids: self.ids,
+            local,
+            address,
+            id: self.id,
+            channel,
+            verbose,
+        }
+    }
+}
+
+pub struct MasterConfig {
+    pub master_name: String,
+    pub address: String,
+    pub names: Vec<String>,
+    pub ids: Vec<Identity>,
+    pub local: bool,
+    pub verbose: u8,
+}