180 lines
4.7 KiB
Rust
180 lines
4.7 KiB
Rust
extern crate markov;
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extern crate purrchance;
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extern crate serde;
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extern crate serenity;
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extern crate tokio;
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extern crate toml;
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// extern crate tracery;
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use purrchance::Purrchance;
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use serde::Deserialize;
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use serenity::{
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async_trait,
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model::{
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channel::Message,
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gateway::Ready,
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id::{ChannelId, GuildId},
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user::User,
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},
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prelude::*,
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};
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use std::fs::read_to_string;
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use std::sync::Once;
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use std::time::Duration;
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enum TextGenerator {
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Perchance {
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grammar: purrchance::Grammar,
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symbol: purrchance::Symbol,
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},
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// Tracery(tracery::Grammar),
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Markov(markov::Chain<String>),
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}
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impl TextGenerator {
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fn generate(&self) -> String {
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match self {
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TextGenerator::Perchance { grammar, symbol } => symbol.eval(&grammar).unwrap(),
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// TextGenerator::Tracery(grammar) => grammar.flatten(),
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TextGenerator::Markov(chain) => chain.generate_str(),
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}
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}
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}
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#[derive(Deserialize)]
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#[serde(tag = "type", rename_all = "lowercase")]
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enum GeneratorSpec {
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Perchance { path: String, symbol: String },
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// Tracery { path: String, rule: String },
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Markov { path: String, order: usize },
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}
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impl GeneratorSpec {
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fn load(&self) -> TextGenerator {
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match self {
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GeneratorSpec::Perchance { path: p, symbol: s } => {
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let grammar =
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purrchance::parser::load_grammar(&read_to_string(p).unwrap()).unwrap();
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let symbol = purrchance::Symbol::NonTerminal(String::from(s));
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TextGenerator::Perchance { grammar, symbol }
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}
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/*
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GeneratorSpec::Tracery { path, rule } => {
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let mut grammar = tracery::from_json(read_to_string(path).unwrap()).unwrap();
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grammar.default_rule(rule);
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TextGenerator::Tracery(grammar)
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}
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*/
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GeneratorSpec::Markov { path, order } => {
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let mut chain = markov::Chain::of_order(*order);
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for line in read_to_string(path).unwrap().lines() {
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chain.feed_str(line);
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}
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TextGenerator::Markov(chain)
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}
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}
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}
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}
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#[derive(Deserialize)]
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struct Config {
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generator: GeneratorSpec,
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token: String,
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channel_id: ChannelId,
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interval: u64,
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}
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impl TypeMapKey for TextGenerator {
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type Value = TextGenerator;
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}
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struct Interval;
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impl TypeMapKey for Interval {
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type Value = u64;
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}
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struct ChanId;
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impl TypeMapKey for ChanId {
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type Value = ChannelId;
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}
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struct Handler {
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start_loop: Once,
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}
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async fn mentions_me(ctx: &Context, msg: &Message) -> bool {
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let me = User::from(ctx.http.get_current_user().await.unwrap());
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if msg.mentions_user(&me) {
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return true;
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}
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let guild = msg.guild(ctx).await.unwrap();
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let member = guild.member(ctx, me).await.unwrap();
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let my_roles = member.roles;
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msg.mention_roles.iter().any(|r| my_roles.contains(r))
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}
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async fn interval_loop(ctx: Context) {
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let channel_id = ctx.data.read().await.get::<ChanId>().unwrap().clone();
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loop {
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let sentence = ctx
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.data
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.read()
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.await
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.get::<TextGenerator>()
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.unwrap()
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.generate();
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channel_id.say(&ctx.http, sentence).await.unwrap();
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tokio::time::sleep(Duration::from_secs(
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*ctx.data.read().await.get::<Interval>().unwrap(),
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))
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.await;
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}
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}
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#[async_trait]
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impl EventHandler for Handler {
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async fn message(&self, ctx: Context, msg: Message) {
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if mentions_me(&ctx, &msg).await {
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let sentence = ctx
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.data
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.read()
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.await
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.get::<TextGenerator>()
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.unwrap()
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.generate();
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msg.channel_id.say(&ctx.http, sentence).await.unwrap();
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}
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}
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async fn ready(&self, _ctx: Context, ready: Ready) {
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eprintln!("{} is connected!", ready.user.name);
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}
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async fn cache_ready(&self, ctx: Context, _guilds: Vec<GuildId>) {
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self.start_loop.call_once(move || {
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tokio::spawn(async move { interval_loop(ctx).await });
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});
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}
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}
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#[tokio::main]
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async fn main() {
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let config: Config = toml::from_str(&read_to_string("config.toml").unwrap()).unwrap();
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let generator = config.generator.load();
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let mut client = Client::builder(&config.token)
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.event_handler(Handler {
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start_loop: Once::new(),
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})
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.type_map_insert::<TextGenerator>(generator)
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.type_map_insert::<Interval>(config.interval)
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.type_map_insert::<ChanId>(config.channel_id)
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.await
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.expect("err creating client");
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client.start().await.unwrap();
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}
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