0340541002 2025-04-24 1: use crate::{
0340541002 2025-04-24 2: command,
0340541002 2025-04-24 3: sql::Db,
9c4f09193a 2026-01-09 4: tg_bot::Tg,
0340541002 2025-04-24 5: };
1c444d34ff 2024-08-28 6:
9171c791eb 2021-11-13 7: use std::{
c1e27b74ed 2021-11-13 8: borrow::Cow,
9171c791eb 2021-11-13 9: collections::{
9171c791eb 2021-11-13 10: BTreeMap,
9171c791eb 2021-11-13 11: HashSet,
9171c791eb 2021-11-13 12: },
dc7c43b010 2026-01-01 13: sync::Arc,
44575a91d3 2025-07-09 14: };
44575a91d3 2025-07-09 15:
dc7c43b010 2026-01-01 16: use async_compat::Compat;
acb0a4ac54 2025-09-28 17: use chrono::{
acb0a4ac54 2025-09-28 18: DateTime,
acb0a4ac54 2025-09-28 19: Local,
44575a91d3 2025-07-09 20: };
5a4aab7687 2025-06-29 21: use lazy_static::lazy_static;
5a4aab7687 2025-06-29 22: use regex::Regex;
9c4f09193a 2026-01-09 23: use reqwest::header::LAST_MODIFIED;
dc7c43b010 2026-01-01 24: use smol::{
dc7c43b010 2026-01-01 25: Timer,
dc7c43b010 2026-01-01 26: lock::Mutex,
acb0a4ac54 2025-09-28 27: };
5a4aab7687 2025-06-29 28: use tgbot::{
bb89b6fab8 2025-06-15 29: handler::UpdateHandler,
bb89b6fab8 2025-06-15 30: types::{
bb89b6fab8 2025-06-15 31: ChatPeerId,
bb89b6fab8 2025-06-15 32: Command,
bb89b6fab8 2025-06-15 33: ParseMode,
bb89b6fab8 2025-06-15 34: Update,
bb89b6fab8 2025-06-15 35: UpdateType,
bb89b6fab8 2025-06-15 36: UserPeerId,
1bd041d00f 2025-05-20 37: },
44575a91d3 2025-07-09 38: };
44575a91d3 2025-07-09 39: use stacked_errors::{
44575a91d3 2025-07-09 40: Result,
44575a91d3 2025-07-09 41: StackableErr,
44575a91d3 2025-07-09 42: anyhow,
44575a91d3 2025-07-09 43: bail,
5a4aab7687 2025-06-29 44: };
5a4aab7687 2025-06-29 45:
5a4aab7687 2025-06-29 46: lazy_static!{
5a4aab7687 2025-06-29 47: pub static ref RE_SPECIAL: Regex = Regex::new(r"([\-_*\[\]()~`>#+|{}\.!])").unwrap();
5a4aab7687 2025-06-29 48: }
5a4aab7687 2025-06-29 49:
7393d62235 2026-01-07 50: /// Escape characters that are special in Telegram MarkdownV2 by prefixing them with a backslash.
7393d62235 2026-01-07 51: ///
7393d62235 2026-01-07 52: /// This ensures the returned string can be used as MarkdownV2-formatted Telegram message content
7393d62235 2026-01-07 53: /// without special characters being interpreted as MarkdownV2 markup.
5a4aab7687 2025-06-29 54: pub fn encode (text: &str) -> Cow<'_, str> {
5a4aab7687 2025-06-29 55: RE_SPECIAL.replace_all(text, "\\$1")
5a4aab7687 2025-06-29 56: }
5a4aab7687 2025-06-29 57:
7393d62235 2026-01-07 58: // This one does nothing except making sure only one token exists for each id
7393d62235 2026-01-07 59: pub struct Token {
7393d62235 2026-01-07 60: running: Arc<Mutex<HashSet<i32>>>,
7393d62235 2026-01-07 61: my_id: i32,
7393d62235 2026-01-07 62: }
7393d62235 2026-01-07 63:
7393d62235 2026-01-07 64: impl Token {
7393d62235 2026-01-07 65: /// Attempts to acquire a per-id token by inserting `my_id` into the shared `running` set.
7393d62235 2026-01-07 66: ///
7393d62235 2026-01-07 67: /// If the id was not already present, the function inserts it and returns `Some(Token)`.
7393d62235 2026-01-07 68: /// When the returned `Token` is dropped, the id will be removed from the `running` set,
7393d62235 2026-01-07 69: /// allowing subsequent acquisitions for the same id.
7393d62235 2026-01-07 70: ///
7393d62235 2026-01-07 71: /// # Parameters
7393d62235 2026-01-07 72: ///
7393d62235 2026-01-07 73: /// - `running`: Shared set tracking active ids.
7393d62235 2026-01-07 74: /// - `my_id`: Identifier to acquire a token for.
7393d62235 2026-01-07 75: ///
7393d62235 2026-01-07 76: /// # Returns
7393d62235 2026-01-07 77: ///
7393d62235 2026-01-07 78: /// `Ok(Token)` if the id was successfully acquired, `Error` if a token for the id is already active.
7393d62235 2026-01-07 79: async fn new (running: &Arc<Mutex<HashSet<i32>>>, my_id: i32) -> Result<Token> {
7393d62235 2026-01-07 80: let running = running.clone();
7393d62235 2026-01-07 81: let mut set = running.lock_arc().await;
7393d62235 2026-01-07 82: if set.contains(&my_id) {
7393d62235 2026-01-07 83: bail!("Token already taken");
7393d62235 2026-01-07 84: } else {
7393d62235 2026-01-07 85: set.insert(my_id);
7393d62235 2026-01-07 86: Ok(Token {
7393d62235 2026-01-07 87: running,
7393d62235 2026-01-07 88: my_id,
7393d62235 2026-01-07 89: })
7393d62235 2026-01-07 90: }
7393d62235 2026-01-07 91: }
7393d62235 2026-01-07 92: }
7393d62235 2026-01-07 93:
7393d62235 2026-01-07 94: impl Drop for Token {
7393d62235 2026-01-07 95: /// Releases this token's claim on the shared running-set when the token is dropped.
7393d62235 2026-01-07 96: ///
7393d62235 2026-01-07 97: /// The token's identifier is removed from the shared `running` set so that future
7393d62235 2026-01-07 98: /// operations for the same id may proceed.
7393d62235 2026-01-07 99: ///
7393d62235 2026-01-07 100: /// TODO: is using block_on inside block_on safe? Currently tested and working fine.
7393d62235 2026-01-07 101: fn drop (&mut self) {
7393d62235 2026-01-07 102: smol::block_on(async {
7393d62235 2026-01-07 103: let mut set = self.running.lock_arc().await;
7393d62235 2026-01-07 104: set.remove(&self.my_id);
7393d62235 2026-01-07 105: })
7393d62235 2026-01-07 106: }
7393d62235 2026-01-07 107: }
7393d62235 2026-01-07 108:
9171c791eb 2021-11-13 109: #[derive(Clone)]
9171c791eb 2021-11-13 110: pub struct Core {
9c4f09193a 2026-01-09 111: pub tg: Tg,
0340541002 2025-04-24 112: pub db: Db,
7393d62235 2026-01-07 113: running: Arc<Mutex<HashSet<i32>>>,
45e34762e4 2023-05-28 114: http_client: reqwest::Client,
45e34762e4 2023-05-28 115: }
45e34762e4 2023-05-28 116:
dc7c43b010 2026-01-01 117: pub struct Post {
dc7c43b010 2026-01-01 118: uri: String,
9c4f09193a 2026-01-09 119: _title: String,
9c4f09193a 2026-01-09 120: _authors: String,
9c4f09193a 2026-01-09 121: _summary: String,
dc7c43b010 2026-01-01 122: }
dc7c43b010 2026-01-01 123:
9171c791eb 2021-11-13 124: impl Core {
7393d62235 2026-01-07 125: /// Create a Core instance from configuration and start its background autofetch loop.
7393d62235 2026-01-07 126: ///
7393d62235 2026-01-07 127: /// The provided `settings` must include:
fabcca1eaf 2026-01-09 128: /// - `owner` (integer): default chat id to use as the owner/destination,
7393d62235 2026-01-07 129: /// - `api_key` (string): Telegram bot API key,
7393d62235 2026-01-07 130: /// - `api_gateway` (string): Telegram API gateway host,
7393d62235 2026-01-07 131: /// - `pg` (string): PostgreSQL connection string,
7393d62235 2026-01-07 132: /// - optional `proxy` (string): proxy URL for the HTTP client.
7393d62235 2026-01-07 133: ///
7393d62235 2026-01-07 134: /// On success returns an initialized `Core` with Telegram and HTTP clients, database connection,
7393d62235 2026-01-07 135: /// an empty running set for per-id tokens, and a spawned background task that periodically runs
7393d62235 2026-01-07 136: /// `autofetch`. If any required setting is missing or initialization fails, an error is returned.
0340541002 2025-04-24 137: pub async fn new(settings: config::Config) -> Result<Core> {
45e34762e4 2023-05-28 138: let mut client = reqwest::Client::builder();
9d8a6738fd 2023-07-30 139: if let Ok(proxy) = settings.get_string("proxy") {
44575a91d3 2025-07-09 140: let proxy = reqwest::Proxy::all(proxy).stack()?;
45e34762e4 2023-05-28 141: client = client.proxy(proxy);
45e34762e4 2023-05-28 142: }
9c4f09193a 2026-01-09 143:
0340541002 2025-04-24 144: let core = Core {
9c4f09193a 2026-01-09 145: tg: Tg::new(&settings).await.stack()?,
44575a91d3 2025-07-09 146: db: Db::new(&settings.get_string("pg").stack()?)?,
7393d62235 2026-01-07 147: running: Arc::new(Mutex::new(HashSet::new())),
9c4f09193a 2026-01-09 148: http_client: client.build().stack()?,
0340541002 2025-04-24 149: };
9c4f09193a 2026-01-09 150:
bb89b6fab8 2025-06-15 151: let clone = core.clone();
dc7c43b010 2026-01-01 152: smol::spawn(Compat::new(async move {
26339860ce 2022-02-13 153: loop {
26339860ce 2022-02-13 154: let delay = match &clone.autofetch().await {
26339860ce 2022-02-13 155: Err(err) => {
9c4f09193a 2026-01-09 156: if let Err(err) = clone.tg.send(format!("🛑 {err}"), None, None).await {
e624ef9d66 2025-04-20 157: eprintln!("Autofetch error: {err:?}");
26339860ce 2022-02-13 158: };
cb86e770f9 2022-03-15 159: std::time::Duration::from_secs(60)
26339860ce 2022-02-13 160: },
26339860ce 2022-02-13 161: Ok(time) => *time,
9171c791eb 2021-11-13 162: };
dc7c43b010 2026-01-01 163: Timer::after(delay).await;
9171c791eb 2021-11-13 164: }
dc7c43b010 2026-01-01 165: })).detach();
9171c791eb 2021-11-13 166: Ok(core)
9171c791eb 2021-11-13 167: }
9171c791eb 2021-11-13 168:
7393d62235 2026-01-07 169: /// Fetches the feed for a source, sends any newly discovered posts to the appropriate chat, and records them in the database.
7393d62235 2026-01-07 170: ///
7393d62235 2026-01-07 171: /// This acquires a per-source guard to prevent concurrent checks for the same `id`. If a check is already running for
7393d62235 2026-01-07 172: /// the given `id`, the function returns an error. If `last_scrape` is provided, it is sent as the `If-Modified-Since`
7393d62235 2026-01-07 173: /// header to the feed request. The function parses RSS or Atom feeds, sends unseen post URLs to either the source's
7393d62235 2026-01-07 174: /// channel (when `real` is true) or the source owner (when `real` is false), and persists posted entries so they are
7393d62235 2026-01-07 175: /// not reposted later.
7393d62235 2026-01-07 176: ///
7393d62235 2026-01-07 177: /// Parameters:
7393d62235 2026-01-07 178: /// - `id`: Identifier of the source to check.
7393d62235 2026-01-07 179: /// - `real`: When `true`, send posts to the source's channel; when `false`, send to the source owner.
7393d62235 2026-01-07 180: /// - `last_scrape`: Optional timestamp used to set the `If-Modified-Since` header for the HTTP request.
7393d62235 2026-01-07 181: ///
7393d62235 2026-01-07 182: /// # Returns
7393d62235 2026-01-07 183: ///
7393d62235 2026-01-07 184: /// `Posted: N` where `N` is the number of posts processed and sent.
acb0a4ac54 2025-09-28 185: pub async fn check (&self, id: i32, real: bool, last_scrape: Option<DateTime<Local>>) -> Result<String> {
44575a91d3 2025-07-09 186: let mut posted: i32 = 0;
44575a91d3 2025-07-09 187: let mut conn = self.db.begin().await.stack()?;
44575a91d3 2025-07-09 188:
7393d62235 2026-01-07 189: let _token = Token::new(&self.running, id).await.stack()?;
9c4f09193a 2026-01-09 190: let source = conn.get_source(id, self.tg.owner).await.stack()?;
7393d62235 2026-01-07 191: conn.set_scrape(id).await.stack()?;
7393d62235 2026-01-07 192: let destination = ChatPeerId::from(match real {
7393d62235 2026-01-07 193: true => source.channel_id,
7393d62235 2026-01-07 194: false => source.owner,
7393d62235 2026-01-07 195: });
7393d62235 2026-01-07 196: let mut this_fetch: Option<DateTime<chrono::FixedOffset>> = None;
7393d62235 2026-01-07 197: let mut posts: BTreeMap<DateTime<chrono::FixedOffset>, Post> = BTreeMap::new();
7393d62235 2026-01-07 198:
7393d62235 2026-01-07 199: let mut builder = self.http_client.get(&source.url);
7393d62235 2026-01-07 200: if let Some(last_scrape) = last_scrape {
7393d62235 2026-01-07 201: builder = builder.header(LAST_MODIFIED, last_scrape.to_rfc2822());
7393d62235 2026-01-07 202: };
7393d62235 2026-01-07 203: let response = builder.send().await.stack()?;
7393d62235 2026-01-07 204: #[cfg(debug_assertions)]
7393d62235 2026-01-07 205: {
9c4f09193a 2026-01-09 206: use reqwest::header::{
9c4f09193a 2026-01-09 207: CACHE_CONTROL,
9c4f09193a 2026-01-09 208: EXPIRES,
9c4f09193a 2026-01-09 209: };
7393d62235 2026-01-07 210: let headers = response.headers();
7393d62235 2026-01-07 211: let expires = headers.get(EXPIRES);
7393d62235 2026-01-07 212: let cache = headers.get(CACHE_CONTROL);
7393d62235 2026-01-07 213: if expires.is_some() || cache.is_some() {
7393d62235 2026-01-07 214: println!("{} {} {:?} {:?} {:?}", Local::now().to_rfc2822(), &source.url, last_scrape, expires, cache);
7393d62235 2026-01-07 215: }
7393d62235 2026-01-07 216: }
7393d62235 2026-01-07 217: let status = response.status();
7393d62235 2026-01-07 218: let content = response.bytes().await.stack()?;
7393d62235 2026-01-07 219: match rss::Channel::read_from(&content[..]) {
7393d62235 2026-01-07 220: Ok(feed) => {
7393d62235 2026-01-07 221: for item in feed.items() {
7393d62235 2026-01-07 222: if let Some(link) = item.link() {
7393d62235 2026-01-07 223: let date = match item.pub_date() {
7393d62235 2026-01-07 224: Some(feed_date) => DateTime::parse_from_rfc2822(feed_date),
7393d62235 2026-01-07 225: None => DateTime::parse_from_rfc3339(match item.dublin_core_ext() {
7393d62235 2026-01-07 226: Some(ext) => {
7393d62235 2026-01-07 227: let dates = ext.dates();
7393d62235 2026-01-07 228: if dates.is_empty() {
7393d62235 2026-01-07 229: bail!("Feed item has Dublin Core extension but no dates.")
7393d62235 2026-01-07 230: } else {
7393d62235 2026-01-07 231: &dates[0]
7393d62235 2026-01-07 232: }
7393d62235 2026-01-07 233: },
7393d62235 2026-01-07 234: None => bail!("Feed item misses posting date."),
7393d62235 2026-01-07 235: }),
7393d62235 2026-01-07 236: }.stack()?;
7393d62235 2026-01-07 237: posts.insert(date, Post{
9c4f09193a 2026-01-09 238: uri: link.to_string(),
9c4f09193a 2026-01-09 239: _title: item.title().unwrap_or("").to_string(),
9c4f09193a 2026-01-09 240: _authors: item.author().unwrap_or("").to_string(),
9c4f09193a 2026-01-09 241: _summary: item.content().unwrap_or("").to_string(),
7393d62235 2026-01-07 242: });
7393d62235 2026-01-07 243: }
7393d62235 2026-01-07 244: };
7393d62235 2026-01-07 245: },
7393d62235 2026-01-07 246: Err(err) => match err {
7393d62235 2026-01-07 247: rss::Error::InvalidStartTag => {
7393d62235 2026-01-07 248: match atom_syndication::Feed::read_from(&content[..]) {
7393d62235 2026-01-07 249: Ok(feed) => {
7393d62235 2026-01-07 250: for item in feed.entries() {
7393d62235 2026-01-07 251: let date = item.published()
7393d62235 2026-01-07 252: .stack_err("Feed item missing publishing date.")?;
7393d62235 2026-01-07 253: let uri = {
7393d62235 2026-01-07 254: let links = item.links();
7393d62235 2026-01-07 255: if links.is_empty() {
7393d62235 2026-01-07 256: bail!("Feed item missing post links.");
7393d62235 2026-01-07 257: } else {
7393d62235 2026-01-07 258: links[0].href().to_string()
7393d62235 2026-01-07 259: }
7393d62235 2026-01-07 260: };
9c4f09193a 2026-01-09 261: let _authors = item.authors().iter().map(|x| format!("{} <{:?}>", x.name(), x.email())).collect::<Vec<String>>().join(", ");
9c4f09193a 2026-01-09 262: let _summary = if let Some(sum) = item.summary() { sum.value.clone() } else { String::new() };
7393d62235 2026-01-07 263: posts.insert(*date, Post{
7393d62235 2026-01-07 264: uri,
9c4f09193a 2026-01-09 265: _title: item.title().to_string(),
9c4f09193a 2026-01-09 266: _authors,
9c4f09193a 2026-01-09 267: _summary,
7393d62235 2026-01-07 268: });
7393d62235 2026-01-07 269: };
7393d62235 2026-01-07 270: },
7393d62235 2026-01-07 271: Err(err) => {
7393d62235 2026-01-07 272: bail!("Unsupported or mangled content:\n{:?}\n{err}\n{status:#?}\n", &source.url)
7393d62235 2026-01-07 273: },
7393d62235 2026-01-07 274: }
7393d62235 2026-01-07 275: },
7393d62235 2026-01-07 276: rss::Error::Eof => (),
7393d62235 2026-01-07 277: _ => bail!("Unsupported or mangled content:\n{:?}\n{err}\n{status:#?}\n", &source.url)
7393d62235 2026-01-07 278: }
7393d62235 2026-01-07 279: };
7393d62235 2026-01-07 280: for (date, post) in posts.iter() {
7393d62235 2026-01-07 281: let post_url: Cow<str> = match source.url_re {
7393d62235 2026-01-07 282: Some(ref x) => sedregex::ReplaceCommand::new(x).stack()?.execute(&post.uri),
7393d62235 2026-01-07 283: None => post.uri.clone().into(),
7393d62235 2026-01-07 284: };
7393d62235 2026-01-07 285: if ! conn.exists(&post_url, id).await.stack()? {
7393d62235 2026-01-07 286: if this_fetch.is_none() || *date > this_fetch.unwrap() {
7393d62235 2026-01-07 287: this_fetch = Some(*date);
7393d62235 2026-01-07 288: };
9c4f09193a 2026-01-09 289: self.tg.send( match &source.iv_hash {
7393d62235 2026-01-07 290: Some(hash) => format!("<a href=\"https://t.me/iv?url={post_url}&rhash={hash}\"> </a>{post_url}"),
7393d62235 2026-01-07 291: None => format!("{post_url}"),
7393d62235 2026-01-07 292: }, Some(destination), Some(ParseMode::Html)).await.stack()?;
7393d62235 2026-01-07 293: conn.add_post(id, date, &post_url).await.stack()?;
fae13a0e55 2025-06-28 294: posted += 1;
fae13a0e55 2025-06-28 295: };
fae13a0e55 2025-06-28 296: };
7393d62235 2026-01-07 297: posts.clear();
0340541002 2025-04-24 298: Ok(format!("Posted: {posted}"))
0340541002 2025-04-24 299: }
0340541002 2025-04-24 300:
fabcca1eaf 2026-01-09 301: /// Determine the delay until the next scheduled fetch and spawn background checks for any overdue sources.
fabcca1eaf 2026-01-09 302: ///
fabcca1eaf 2026-01-09 303: /// This scans the database queue, spawns background tasks to run checks for sources whose `next_fetch`
fabcca1eaf 2026-01-09 304: /// is in the past (each task uses a Core clone with the appropriate owner), and computes the shortest
fabcca1eaf 2026-01-09 305: /// duration until the next `next_fetch`.
bb89b6fab8 2025-06-15 306: async fn autofetch(&self) -> Result<std::time::Duration> {
26339860ce 2022-02-13 307: let mut delay = chrono::Duration::minutes(1);
9910c2209c 2023-08-04 308: let now = chrono::Local::now();
bb89b6fab8 2025-06-15 309: let queue = {
44575a91d3 2025-07-09 310: let mut conn = self.db.begin().await.stack()?;
44575a91d3 2025-07-09 311: conn.get_queue().await.stack()?
bb89b6fab8 2025-06-15 312: };
bb89b6fab8 2025-06-15 313: for row in queue {
9910c2209c 2023-08-04 314: if let Some(next_fetch) = row.next_fetch {
9910c2209c 2023-08-04 315: if next_fetch < now {
acb0a4ac54 2025-09-28 316: if let (Some(owner), Some(source_id), last_scrape) = (row.owner, row.source_id, row.last_scrape) {
bb89b6fab8 2025-06-15 317: let clone = Core {
9c4f09193a 2026-01-09 318: tg: self.tg.with_owner(owner),
9910c2209c 2023-08-04 319: ..self.clone()
9910c2209c 2023-08-04 320: };
b4af85e31b 2025-06-29 321: let source = {
44575a91d3 2025-07-09 322: let mut conn = self.db.begin().await.stack()?;
b4af85e31b 2025-06-29 323: match conn.get_one(owner, source_id).await {
b4af85e31b 2025-06-29 324: Ok(Some(source)) => source.to_string(),
7393d62235 2026-01-07 325: Ok(None) => "Source not found in database?".to_string(),
b4af85e31b 2025-06-29 326: Err(err) => format!("Failed to fetch source data:\n{err}"),
b4af85e31b 2025-06-29 327: }
b4af85e31b 2025-06-29 328: };
dc7c43b010 2026-01-01 329: smol::spawn(Compat::new(async move {
9c4f09193a 2026-01-09 330: if let Err(err) = clone.check(source_id, true, Some(last_scrape)).await
9c4f09193a 2026-01-09 331: && let Err(err) = clone.tg.send(&format!("🛑 {source}\n{}", encode(&err.to_string())), None, Some(ParseMode::MarkdownV2)).await
9c4f09193a 2026-01-09 332: {
9c4f09193a 2026-01-09 333: eprintln!("Check error: {err}");
dc7c43b010 2026-01-01 334: };
dc7c43b010 2026-01-01 335: })).detach();
9910c2209c 2023-08-04 336: }
9910c2209c 2023-08-04 337: } else if next_fetch - now < delay {
9910c2209c 2023-08-04 338: delay = next_fetch - now;
9910c2209c 2023-08-04 339: }
9910c2209c 2023-08-04 340: }
9910c2209c 2023-08-04 341: };
44575a91d3 2025-07-09 342: delay.to_std().stack()
9910c2209c 2023-08-04 343: }
9910c2209c 2023-08-04 344:
bb89b6fab8 2025-06-15 345: pub async fn list (&self, owner: UserPeerId) -> Result<String> {
b4af85e31b 2025-06-29 346: let mut reply: Vec<String> = vec![];
f988dfd28f 2022-02-13 347: reply.push("Channels:".into());
44575a91d3 2025-07-09 348: let mut conn = self.db.begin().await.stack()?;
44575a91d3 2025-07-09 349: for row in conn.get_list(owner).await.stack()? {
b4af85e31b 2025-06-29 350: reply.push(row.to_string());
9910c2209c 2023-08-04 351: };
b4af85e31b 2025-06-29 352: Ok(reply.join("\n\n"))
bb89b6fab8 2025-06-15 353: }
bb89b6fab8 2025-06-15 354: }
bb89b6fab8 2025-06-15 355:
bb89b6fab8 2025-06-15 356: impl UpdateHandler for Core {
fabcca1eaf 2026-01-09 357: /// Dispatches an incoming Telegram update to a matching command handler and reports handler errors to the originating chat.
fabcca1eaf 2026-01-09 358: ///
fabcca1eaf 2026-01-09 359: /// This method inspects the update; if it contains a message that can be parsed as a bot command,
fabcca1eaf 2026-01-09 360: /// it executes the corresponding command handler. If the handler returns an error, the error text
13265e7697 2026-01-10 361: /// is sent back to the message's chat using MarkdownV2 formatting. Unknown commands produce an error
fabcca1eaf 2026-01-09 362: /// which is also reported to the chat.
9c4f09193a 2026-01-09 363: async fn handle (&self, update: Update) {
9c4f09193a 2026-01-09 364: if let UpdateType::Message(msg) = update.update_type
9c4f09193a 2026-01-09 365: && let Ok(cmd) = Command::try_from(msg)
9c4f09193a 2026-01-09 366: {
9c4f09193a 2026-01-09 367: let msg = cmd.get_message();
9c4f09193a 2026-01-09 368: let words = cmd.get_args();
9c4f09193a 2026-01-09 369: let command = cmd.get_name();
9c4f09193a 2026-01-09 370: let res = match command {
9c4f09193a 2026-01-09 371: "/check" | "/clean" | "/enable" | "/delete" | "/disable" => command::command(self, command, msg, words).await,
9c4f09193a 2026-01-09 372: "/start" => command::start(self, msg).await,
9c4f09193a 2026-01-09 373: "/list" => command::list(self, msg).await,
9c4f09193a 2026-01-09 374: "/add" | "/update" => command::update(self, command, msg, words).await,
9c4f09193a 2026-01-09 375: any => Err(anyhow!("Unknown command: {any}")),
9c4f09193a 2026-01-09 376: };
9c4f09193a 2026-01-09 377: if let Err(err) = res
9c4f09193a 2026-01-09 378: && let Err(err2) = self.tg.send(format!("\\#error\n```\n{err}\n```"),
9c4f09193a 2026-01-09 379: Some(msg.chat.get_id()),
9c4f09193a 2026-01-09 380: Some(ParseMode::MarkdownV2)
9c4f09193a 2026-01-09 381: ).await
9c4f09193a 2026-01-09 382: {
9c4f09193a 2026-01-09 383: dbg!(err2);
9c4f09193a 2026-01-09 384: }
fabcca1eaf 2026-01-09 385: } // TODO: debug log for skipped updates?;
e624ef9d66 2025-04-20 386: }
9171c791eb 2021-11-13 387: }