Lines of
src/core.rs
from check-in 1bd041d00f
that are changed by the sequence of edits moving toward
check-in bb89b6fab8:
1: use crate::{
2: command,
3: sql::Db,
4: };
5:
6: use std::{
7: borrow::Cow,
8: collections::{
9: BTreeMap,
10: HashSet,
11: },
12: num::TryFromIntError,
13: sync::{
14: Arc,
15: Mutex
16: },
17: };
18:
19: use anyhow::{
20: anyhow,
21: bail,
22: Result,
23: };
24: use async_std::task;
25: use chrono::DateTime;
1bd041d00f 2025-05-20 26: use frankenstein::{
1bd041d00f 2025-05-20 27: AsyncTelegramApi,
1bd041d00f 2025-05-20 28: Error as FrankError,
1bd041d00f 2025-05-20 29: ParseMode,
1bd041d00f 2025-05-20 30: client_reqwest::Bot,
1bd041d00f 2025-05-20 31: methods::{
1bd041d00f 2025-05-20 32: GetUpdatesParams,
1bd041d00f 2025-05-20 33: SendMessageParams
1bd041d00f 2025-05-20 34: },
35: types::{
1bd041d00f 2025-05-20 36: AllowedUpdate,
1bd041d00f 2025-05-20 37: MessageEntityType,
1bd041d00f 2025-05-20 38: User,
39: },
1bd041d00f 2025-05-20 40: updates::UpdateContent,
41: };
42: use thiserror::Error;
43:
44: #[derive(Error, Debug)]
45: pub enum RssError {
46: // #[error(transparent)]
47: // Tg(#[from] TgError),
48: #[error(transparent)]
49: Int(#[from] TryFromIntError),
50: }
51:
52: #[derive(Clone)]
53: pub struct Core {
1bd041d00f 2025-05-20 54: owner_chat: i64,
1bd041d00f 2025-05-20 55: max_delay: u16,
1bd041d00f 2025-05-20 56: pub tg: Bot,
1bd041d00f 2025-05-20 57: pub me: User,
58: pub db: Db,
59: sources: Arc<Mutex<HashSet<Arc<i32>>>>,
60: http_client: reqwest::Client,
61: }
62:
63: impl Core {
64: pub async fn new(settings: config::Config) -> Result<Core> {
1bd041d00f 2025-05-20 65: let owner_chat = settings.get_int("owner")?;
66: let api_key = settings.get_string("api_key")?;
1bd041d00f 2025-05-20 67: let tg = Bot::new(&api_key);
68:
69: let mut client = reqwest::Client::builder();
70: if let Ok(proxy) = settings.get_string("proxy") {
71: let proxy = reqwest::Proxy::all(proxy)?;
72: client = client.proxy(proxy);
73: }
74: let http_client = client.build()?;
1bd041d00f 2025-05-20 75: let me = tg.get_me().await?;
1bd041d00f 2025-05-20 76: let me = me.result;
77: let core = Core {
78: tg,
79: me,
80: owner_chat,
81: db: Db::new(&settings.get_string("pg")?)?,
82: sources: Arc::new(Mutex::new(HashSet::new())),
83: http_client,
1bd041d00f 2025-05-20 84: max_delay: 60,
85: };
1bd041d00f 2025-05-20 86: let mut clone = core.clone();
87: task::spawn(async move {
88: loop {
89: let delay = match &clone.autofetch().await {
90: Err(err) => {
91: if let Err(err) = clone.send(format!("š {err:?}"), None, None).await {
92: eprintln!("Autofetch error: {err:?}");
93: };
94: std::time::Duration::from_secs(60)
95: },
96: Ok(time) => *time,
97: };
98: task::sleep(delay).await;
99: }
100: });
101: Ok(core)
102: }
103:
1bd041d00f 2025-05-20 104: pub async fn stream(&mut self) -> Result<()> {
105: let mut offset: i64 = 0;
106: let mut params = GetUpdatesParams {
107: offset: None,
108: limit: Some(100),
109: timeout: Some(300),
110: allowed_updates: Some(vec![AllowedUpdate::Message]),
111: };
112: loop {
113: let updates = self.tg.get_updates(¶ms).await?.result;
114: if updates.is_empty() {
115: offset = 0;
116: params.offset = None;
117: continue;
118: }
119: for update in updates {
120: if i64::from(update.update_id) >= offset {
121: offset = i64::from(update.update_id) + 1;
122: params.offset = Some(offset);
123: }
124: if let UpdateContent::Message(msg) = update.content {
125: if let Some(text) = msg.text {
126: if let Some(entities) = msg.entities {
127: let chars: Vec<u16> = text.encode_utf16().collect();
128: for entity in entities {
129: if entity.type_field == MessageEntityType::BotCommand && entity.offset != 0 {
130: bail!("commands should be at message start");
131: };
132: let cmd = String::from_utf16_lossy(&chars[entity.offset as usize..entity.length as usize]);
133: let words: Vec<&str> = text.split_whitespace().collect();
134: let res = match cmd.as_ref() {
135: "/check" | "/clean" | "/enable" | "/delete" | "/disable" => command::command(self, msg.chat.id, words).await,
136: "/start" => command::start(self, msg.chat.id).await,
137: "/list" => command::list(self, msg.chat.id).await,
138: "/add" | "/update" => command::update(self, msg.chat.id, words).await,
139: any => Err(anyhow!("Unknown command: {any}")),
140: };
141: if let Err(err) = res {
142: if let Err(err2) = self.send(format!("\\#error\n```\n{err:?}\n```"),
143: Some(msg.chat.id),
144: Some(ParseMode::MarkdownV2)
145: ).await{
146: dbg!(err2);
147: };
148: }
149: };
150: };
151: };
152: };
153: }
154: }
155: }
156:
1bd041d00f 2025-05-20 157: pub async fn send <S>(&self, msg: S, target: Option<i64>, mode: Option<ParseMode>) -> Result<()>
158: where S: Into<String> {
159: let msg = msg.into();
160:
161: let mode = mode.unwrap_or(ParseMode::Html);
162: let target = target.unwrap_or(self.owner_chat);
1bd041d00f 2025-05-20 163: let send = SendMessageParams::builder()
1bd041d00f 2025-05-20 164: .chat_id(target)
1bd041d00f 2025-05-20 165: .text(msg)
1bd041d00f 2025-05-20 166: .parse_mode(mode)
1bd041d00f 2025-05-20 167: .build();
1bd041d00f 2025-05-20 168: loop {
1bd041d00f 2025-05-20 169: match self.tg.send_message(&send).await {
1bd041d00f 2025-05-20 170: Ok(_) => break,
1bd041d00f 2025-05-20 171: Err(err) => match err {
1bd041d00f 2025-05-20 172: FrankError::Api(ref resp) => {
1bd041d00f 2025-05-20 173: if resp.error_code == 429 {
1bd041d00f 2025-05-20 174: let mut my_delay = self.max_delay;
1bd041d00f 2025-05-20 175: if let Some(params) = resp.parameters {
1bd041d00f 2025-05-20 176: if let Some(delay) = params.retry_after {
1bd041d00f 2025-05-20 177: if delay < my_delay {
1bd041d00f 2025-05-20 178: my_delay = delay;
1bd041d00f 2025-05-20 179: }
1bd041d00f 2025-05-20 180: }
1bd041d00f 2025-05-20 181: }
1bd041d00f 2025-05-20 182: task::sleep(std::time::Duration::from_secs(my_delay.into())).await;
1bd041d00f 2025-05-20 183: } else {
1bd041d00f 2025-05-20 184: return Err(err.into());
1bd041d00f 2025-05-20 185: }
1bd041d00f 2025-05-20 186: },
1bd041d00f 2025-05-20 187: _ => return Err(err.into()),
1bd041d00f 2025-05-20 188: },
1bd041d00f 2025-05-20 189: }
1bd041d00f 2025-05-20 190: }
1bd041d00f 2025-05-20 191: Ok(())
192: }
193:
1bd041d00f 2025-05-20 194: pub async fn check (&mut self, id: &i32, owner: i64, real: bool) -> Result<String> {
195: let mut posted: i32 = 0;
196: let mut conn = self.db.begin().await?;
197:
198: let id = {
199: let mut set = self.sources.lock().unwrap();
1bd041d00f 2025-05-20 200: match set.get(id) {
201: Some(id) => id.clone(),
202: None => {
1bd041d00f 2025-05-20 203: let id = Arc::new(*id);
204: set.insert(id.clone());
205: id.clone()
206: },
207: }
208: };
209: let count = Arc::strong_count(&id);
210: if count == 2 {
1bd041d00f 2025-05-20 211: let source = conn.get_source(*id, owner).await?;
212: conn.set_scrape(*id).await?;
1bd041d00f 2025-05-20 213: let destination = match real {
214: true => source.channel_id,
215: false => source.owner,
1bd041d00f 2025-05-20 216: };
217: let mut this_fetch: Option<DateTime<chrono::FixedOffset>> = None;
218: let mut posts: BTreeMap<DateTime<chrono::FixedOffset>, String> = BTreeMap::new();
219:
220: let response = self.http_client.get(&source.url).send().await?;
221: let status = response.status();
222: let content = response.bytes().await?;
223: match rss::Channel::read_from(&content[..]) {
224: Ok(feed) => {
225: for item in feed.items() {
226: if let Some(link) = item.link() {
227: let date = match item.pub_date() {
228: Some(feed_date) => DateTime::parse_from_rfc2822(feed_date),
229: None => DateTime::parse_from_rfc3339(&item.dublin_core_ext().unwrap().dates()[0]),
230: }?;
231: let url = link;
232: posts.insert(date, url.to_string());
233: }
234: };
235: },
236: Err(err) => match err {
237: rss::Error::InvalidStartTag => {
238: match atom_syndication::Feed::read_from(&content[..]) {
239: Ok(feed) => {
240: for item in feed.entries() {
241: let date = item.published().unwrap();
242: let url = item.links()[0].href();
243: posts.insert(*date, url.to_string());
244: };
245: },
246: Err(err) => {
247: bail!("Unsupported or mangled content:\n{:?}\n{err:#?}\n{status:#?}\n", &source.url)
248: },
249: }
250: },
251: rss::Error::Eof => (),
252: _ => bail!("Unsupported or mangled content:\n{:?}\n{err:#?}\n{status:#?}\n", &source.url)
253: }
254: };
255: for (date, url) in posts.iter() {
256: let post_url: Cow<str> = match source.url_re {
257: Some(ref x) => sedregex::ReplaceCommand::new(x)?.execute(url),
258: None => url.into(),
259: };
260: if let Some(exists) = conn.exists(&post_url, *id).await? {
261: if ! exists {
262: if this_fetch.is_none() || *date > this_fetch.unwrap() {
263: this_fetch = Some(*date);
264: };
265: self.send( match &source.iv_hash {
266: Some(hash) => format!("<a href=\"https://t.me/iv?url={post_url}&rhash={hash}\"> </a>{post_url}"),
267: None => format!("{post_url}"),
268: }, Some(destination), Some(ParseMode::Html)).await?;
269: conn.add_post(*id, date, &post_url).await?;
270: };
271: };
272: posted += 1;
273: };
274: posts.clear();
275: };
276: Ok(format!("Posted: {posted}"))
277: }
278:
1bd041d00f 2025-05-20 279: async fn autofetch(&mut self) -> Result<std::time::Duration> {
280: let mut delay = chrono::Duration::minutes(1);
281: let now = chrono::Local::now();
1bd041d00f 2025-05-20 282: let mut conn = self.db.begin().await?;
1bd041d00f 2025-05-20 283: for row in conn.get_queue().await? {
284: if let Some(next_fetch) = row.next_fetch {
285: if next_fetch < now {
286: if let (Some(owner), Some(source_id)) = (row.owner, row.source_id) {
1bd041d00f 2025-05-20 287: let mut clone = Core {
1bd041d00f 2025-05-20 288: owner_chat: owner,
289: ..self.clone()
290: };
291: task::spawn(async move {
1bd041d00f 2025-05-20 292: if let Err(err) = clone.check(&source_id, owner, true).await {
293: if let Err(err) = clone.send(&format!("š {err:?}"), None, None).await {
294: eprintln!("Check error: {err:?}");
295: // clone.disable(&source_id, owner).await.unwrap();
296: };
297: };
298: });
299: }
300: } else if next_fetch - now < delay {
301: delay = next_fetch - now;
302: }
303: }
304: };
305: Ok(delay.to_std()?)
306: }
307:
1bd041d00f 2025-05-20 308: pub async fn list (&mut self, owner: i64) -> Result<String> {
309: let mut reply: Vec<Cow<str>> = vec![];
310: reply.push("Channels:".into());
311: let mut conn = self.db.begin().await?;
312: for row in conn.get_list(owner).await? {
313: reply.push(format!("\n\\#ļøā£ {} \\*ļøā£ `{}` {}\nš `{}`", row.source_id, row.channel,
314: match row.enabled {
315: true => "š enabled",
316: false => "ā disabled",
317: }, row.url).into());
318: if let Some(hash) = &row.iv_hash {
319: reply.push(format!("IV: `{hash}`").into());
320: }
321: if let Some(re) = &row.url_re {
322: reply.push(format!("RE: `{re}`").into());
323: }
324: };
325: Ok(reply.join("\n"))
326: }
327: }