| 1 | use std::collections::HashMap; |
| 2 | use std::collections::VecDeque; |
| 3 | use std::sync::Arc; |
| 4 | |
| 5 | use irc::client::Sender; |
| 6 | use serenity::all::Cache; |
| 7 | use serenity::all::ChannelId; |
| 8 | use serenity::all::ExecuteWebhook; |
| 9 | use serenity::all::Http; |
| 10 | use serenity::all::Webhook; |
| 11 | use serenity::builder; |
| 12 | use serenity::prelude::*; |
| 13 | use sha1::{Sha1, Digest}; |
| 14 | use tokio::sync::Notify; |
| 15 | |
| 16 | #[derive(Debug)] |
| 17 | pub enum RelayDirection { |
| 18 | INVALID, |
| 19 | IRC2DIS(String), |
| 20 | DIS2IRC(ChannelId), |
| 21 | } |
| 22 | |
| 23 | pub enum MessageType { |
| 24 | Normal, |
| 25 | // discord reply, containing the u64 message id that it references, and the author name. |
| 26 | ReplyDiscord((String, String)), |
| 27 | // irc reply, containing the message base64 hash it references. |
| 28 | ReplyIrc(String) |
| 29 | } |
| 30 | |
| 31 | pub struct RelayMessage { |
| 32 | pub contents: String, |
| 33 | pub direction: RelayDirection, |
| 34 | pub author: String, |
| 35 | pub message_type: MessageType |
| 36 | } |
| 37 | |
| 38 | pub struct MessageBuffer { |
| 39 | pub pending_relay_messages: VecDeque<RelayMessage>, |
| 40 | } |
| 41 | |
| 42 | pub struct RelayNotify { |
| 43 | pub notify: Notify, |
| 44 | } |
| 45 | |
| 46 | impl Default for RelayNotify { |
| 47 | fn default() -> Self { |
| 48 | RelayNotify { |
| 49 | notify: Notify::new(), |
| 50 | } |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | pub struct RelayAssoc { |
| 55 | // stores the Discord - IRC channel bridge associations |
| 56 | pub bridge_assoc: HashMap<ChannelId, Vec<String>>, |
| 57 | // stores the webhook URL for the discord channels |
| 58 | pub chid_webhook_assoc: HashMap<ChannelId, String>, |
| 59 | } |
| 60 | |
| 61 | impl RelayAssoc { |
| 62 | pub fn find_target(&self, source: RelayDirection) -> RelayDirection { |
| 63 | match source { |
| 64 | RelayDirection::IRC2DIS(chan) => { |
| 65 | for (chid, chan_vec) in self.bridge_assoc.iter() { |
| 66 | for c in chan_vec.iter() { |
| 67 | if c.eq_ignore_ascii_case(&chan) { return RelayDirection::DIS2IRC(*chid) }; |
| 68 | } |
| 69 | } |
| 70 | return RelayDirection::INVALID; |
| 71 | }, |
| 72 | RelayDirection::DIS2IRC(chan) => { |
| 73 | if let Some(target) = self.bridge_assoc.get(&chan) { |
| 74 | let irc_target = target.first().unwrap(); |
| 75 | return RelayDirection::IRC2DIS(irc_target.clone()); |
| 76 | } else { return RelayDirection::INVALID } |
| 77 | }, |
| 78 | _ => { panic!("Invalid source of message! {source:?}") } |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | impl Default for RelayAssoc { |
| 84 | fn default() -> Self { |
| 85 | RelayAssoc { |
| 86 | bridge_assoc: HashMap::new(), |
| 87 | chid_webhook_assoc: HashMap::new() |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | impl Default for RelayMessage { |
| 93 | fn default() -> Self { |
| 94 | RelayMessage { |
| 95 | contents: String::new(), |
| 96 | direction: RelayDirection::INVALID, |
| 97 | author: String::new(), |
| 98 | message_type: MessageType::Normal |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | impl Default for MessageBuffer { |
| 104 | fn default() -> Self { |
| 105 | MessageBuffer { |
| 106 | pending_relay_messages: VecDeque::new(), |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | impl TypeMapKey for MessageBuffer { |
| 112 | type Value = Arc<RwLock<MessageBuffer>>; |
| 113 | } |
| 114 | |
| 115 | impl TypeMapKey for RelayNotify { |
| 116 | type Value = Arc<RelayNotify>; |
| 117 | } |
| 118 | |
| 119 | fn format_name(name: &str) -> String { |
| 120 | // XMPP RFC 3174 implementation |
| 121 | // get hash |
| 122 | let mut hasher = Sha1::new(); |
| 123 | hasher.update(name); |
| 124 | let result = hasher.finalize(); |
| 125 | // obtain the last 16 bits |
| 126 | let last16 = result.last_chunk::<2>().unwrap(); |
| 127 | let last16_float = f32::from(((last16[0] as u16) << 8) | (last16[1] as u16)); |
| 128 | let hue = last16_float * 360.0 / 65535.0; |
| 129 | let hue = hue.ceil(); |
| 130 | let hue: u32 = hue.to_bits() % 87; |
| 131 | println!("{hue}"); |
| 132 | // insert invisible character to prevent pings |
| 133 | let (split_name_first, split_name_rest) = name.split_at(1); |
| 134 | |
| 135 | format!("\x03{hue:02}{split_name_first}{split_name_rest}\x03") |
| 136 | } |
| 137 | |
| 138 | |
| 139 | pub async fn relay_consumer( |
| 140 | buffer: Arc<RwLock<MessageBuffer>>, |
| 141 | notify: Arc<RelayNotify>, |
| 142 | http: Arc<Http>, |
| 143 | sender: Sender, |
| 144 | assoc: RelayAssoc, |
| 145 | avatars: HashMap<String, String> |
| 146 | ) { |
| 147 | loop { |
| 148 | // await for new relay pending events |
| 149 | notify.notify.notified().await; |
| 150 | let pending: RelayMessage; |
| 151 | { |
| 152 | let mut buffer_lock = buffer.write().await; |
| 153 | pending = buffer_lock.pending_relay_messages.pop_front().unwrap(); |
| 154 | } |
| 155 | println!( |
| 156 | "Received message to relay: {}, {:?}", |
| 157 | pending.contents, pending.direction |
| 158 | ); |
| 159 | match pending.direction { |
| 160 | RelayDirection::IRC2DIS(chan) => { |
| 161 | // let chanid = ChannelId::new(591954698664149044); |
| 162 | // chanid.say(http.clone(), pending.contents).await.unwrap(); |
| 163 | let target = assoc.find_target(RelayDirection::IRC2DIS(chan)); |
| 164 | match target { |
| 165 | RelayDirection::DIS2IRC(t) => { |
| 166 | let webhook = Webhook::from_url(&http, assoc.chid_webhook_assoc.get(&t).expect("Expected a webhook url for channel {t.get()}")).await.unwrap(); |
| 167 | let builder: ExecuteWebhook; |
| 168 | // let guilds = http.get_guilds(None, None).await.unwrap(); |
| 169 | let avatar_url: Option<String> = None; |
| 170 | // for guild in guilds { |
| 171 | // let members = http.get_guild_members(guild.id, None, None).await.unwrap(); |
| 172 | // for member in members { |
| 173 | // println!("Member: {:?}", member.nick); |
| 174 | // let mut name = member.user.name.clone(); |
| 175 | // if let Some(nick) = member.nick.clone() { |
| 176 | // name = nick; |
| 177 | // } |
| 178 | // if pending.author.eq_ignore_ascii_case(&name) { |
| 179 | // println!("Found match: {}", name); |
| 180 | // avatar_url = member.avatar_url; |
| 181 | // println!("Avatar URL: {:?}", avatar_url); |
| 182 | // break; |
| 183 | // } |
| 184 | // } |
| 185 | // } |
| 186 | |
| 187 | if let Some(avatar_url) = avatar_url { |
| 188 | println!("{avatar_url}"); |
| 189 | builder = ExecuteWebhook::new().content(pending.contents).username(pending.author).avatar_url(avatar_url); |
| 190 | } else { |
| 191 | builder = ExecuteWebhook::new().content(pending.contents).username(pending.author); |
| 192 | } |
| 193 | |
| 194 | webhook.execute(&http, false, builder).await.expect("Could not execute webhook."); |
| 195 | }, |
| 196 | _ => { panic!("Found no target to send the message to!") } |
| 197 | } |
| 198 | } |
| 199 | RelayDirection::DIS2IRC(chan) => { |
| 200 | let source_name = format_name(&pending.author); |
| 201 | let target = assoc.find_target(RelayDirection::DIS2IRC(chan)); |
| 202 | match target { |
| 203 | RelayDirection::IRC2DIS(t) => { |
| 204 | let response; |
| 205 | let message_contents = pending.contents; |
| 206 | match pending.message_type { |
| 207 | MessageType::ReplyDiscord(tuple) => { |
| 208 | let target_reply_user = format_name(&tuple.1); |
| 209 | let origin_contents = tuple.0; |
| 210 | response = format!("<{source_name} replying to: {target_reply_user}> \"{origin_contents}\"\r\n\t↪ {message_contents}"); |
| 211 | }, |
| 212 | MessageType::Normal => { |
| 213 | response = format!("<{source_name}> {message_contents}"); |
| 214 | }, |
| 215 | _ => { |
| 216 | // found invalid message type here!! |
| 217 | println!("Invalid reply type found."); |
| 218 | return; |
| 219 | } |
| 220 | } |
| 221 | sender.send_privmsg(t, response).unwrap(); |
| 222 | }, |
| 223 | _ => { println!("Found no target to send the message to!") } |
| 224 | } |
| 225 | } |
| 226 | _ => {} |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | |
