Lines of
src/command.rs
from check-in bb89b6fab8
that are changed by the sequence of edits moving toward
check-in fae13a0e55:
1: use crate::core::Core;
2:
3: use anyhow::{
4: anyhow,
5: bail,
6: Context,
7: Result,
8: };
9: use lazy_static::lazy_static;
10: use regex::Regex;
11: use sedregex::ReplaceCommand;
12: use tgbot::types::{
13: ChatMember,
14: ChatUsername,
15: GetChat,
16: GetChatAdministrators,
17: Message,
18: ParseMode::MarkdownV2,
19: };
20:
21: lazy_static! {
bb89b6fab8 2025-06-15 22: static ref RE_USERNAME: Regex = Regex::new(r"^@[a-zA-Z][a-zA-Z0-9_]+$").unwrap();
23: static ref RE_LINK: Regex = Regex::new(r"^https?://[a-zA-Z.0-9-]+/[-_a-zA-Z.:0-9/?=]+$").unwrap();
24: static ref RE_IV_HASH: Regex = Regex::new(r"^[a-f0-9]{14}$").unwrap();
25: }
26:
bb89b6fab8 2025-06-15 27: pub async fn start(core: &Core, msg: &Message) -> Result<()> {
28: core.send("We are open\\. Probably\\. Visit [channel](https://t.me/rsstg_bot_help/3) for details\\.",
29: Some(msg.chat.get_id()), Some(MarkdownV2)).await?;
30: Ok(())
31: }
32:
bb89b6fab8 2025-06-15 33: pub async fn list(core: &Core, msg: &Message) -> Result<()> {
34: let sender = msg.sender.get_user_id()
35: .ok_or(anyhow!("Ignoring unreal users."))?;
36: let reply = core.list(sender).await?;
37: core.send(reply, Some(msg.chat.get_id()), Some(MarkdownV2)).await?;
38: Ok(())
39: }
40:
bb89b6fab8 2025-06-15 41: pub async fn command (core: &Core, msg: &Message, command: &[String]) -> Result<()> {
42: let mut conn = core.db.begin().await?;
43: let sender = msg.sender.get_user_id()
44: .ok_or(anyhow!("Ignoring unreal users."))?;
bb89b6fab8 2025-06-15 45: let reply = if command.len() >= 2 {
bb89b6fab8 2025-06-15 46: match command[1].parse::<i32>() {
47: Err(err) => format!("I need a number.\n{}", &err).into(),
bb89b6fab8 2025-06-15 48: Ok(number) => match &command[0][..] {
49: "/check" => core.check(number, false).await
50: .context("Channel check failed.")?.into(),
51: "/clean" => conn.clean(number, sender).await?,
52: "/enable" => conn.enable(number, sender).await?.into(),
53: "/delete" => conn.delete(number, sender).await?,
54: "/disable" => conn.disable(number, sender).await?.into(),
bb89b6fab8 2025-06-15 55: _ => bail!("Command {} not handled.", &command[0]),
56: },
57: }
58: } else {
bb89b6fab8 2025-06-15 59: "This command needs a number.".into()
60: };
61: core.send(reply, Some(msg.chat.get_id()), None).await?;
62: Ok(())
63: }
64:
bb89b6fab8 2025-06-15 65: pub async fn update (core: &Core, msg: &Message, command: &[String]) -> Result<()> {
66: let sender = msg.sender.get_user_id()
67: .ok_or(anyhow!("Ignoring unreal users."))?;
68: let mut source_id: Option<i32> = None;
69: let at_least = "Requires at least 3 parameters.";
bb89b6fab8 2025-06-15 70: let mut i_command = command.iter();
bb89b6fab8 2025-06-15 71: let first_word = i_command.next().context(at_least)?;
bb89b6fab8 2025-06-15 72: match first_word.as_ref() {
73: "/update" => {
bb89b6fab8 2025-06-15 74: let next_word = i_command.next().context(at_least)?;
75: source_id = Some(next_word.parse::<i32>()
76: .context(format!("I need a number, but got {next_word}."))?);
77: },
78: "/add" => {},
bb89b6fab8 2025-06-15 79: _ => bail!("Passing {first_word} is not possible here."),
80: };
81: let (channel, url, iv_hash, url_re) = (
bb89b6fab8 2025-06-15 82: i_command.next().context(at_least)?,
bb89b6fab8 2025-06-15 83: i_command.next().context(at_least)?,
bb89b6fab8 2025-06-15 84: i_command.next(),
bb89b6fab8 2025-06-15 85: i_command.next());
86: if ! RE_USERNAME.is_match(channel) {
87: bail!("Usernames should be something like \"@\\[a\\-zA\\-Z]\\[a\\-zA\\-Z0\\-9\\_]+\", aren't they?\nNot {channel:?}");
88: };
89: if ! RE_LINK.is_match(url) {
90: bail!("Link should be a link to atom/rss feed, something like \"https://domain/path\".\nNot {url:?}");
91: }
92: let iv_hash = match iv_hash {
93: Some(hash) => {
94: match hash.as_ref() {
95: "-" => None,
96: thing => {
97: if ! RE_IV_HASH.is_match(thing) {
98: bail!("IV hash should be 14 hex digits.\nNot {thing:?}");
99: };
100: Some(thing)
101: },
102: }
103: },
104: None => None,
105: };
106: let url_re = match url_re {
107: Some(re) => {
108: match re.as_ref() {
109: "-" => None,
110: thing => {
111: let _url_rex = ReplaceCommand::new(thing).context("Regexp parsing error:")?;
112: Some(thing)
113: }
114: }
115: },
116: None => None,
117: };
bb89b6fab8 2025-06-15 118: let chat_id = ChatUsername::from(channel.clone());
119: let channel_id = core.tg.execute(GetChat::new(chat_id.clone())).await?.id;
120: let chan_adm = core.tg.execute(GetChatAdministrators::new(chat_id)).await
121: .context("Sorry, I have no access to that chat.")?;
122: let (mut me, mut user) = (false, false);
123: for admin in chan_adm {
124: let member_id = match admin {
125: ChatMember::Creator(member) => member.user.id,
126: ChatMember::Administrator(member) => member.user.id,
127: ChatMember::Left(_)
128: | ChatMember::Kicked(_)
129: | ChatMember::Member{..}
130: | ChatMember::Restricted(_) => continue,
131: };
132: if member_id == core.me.id {
133: me = true;
134: }
135: if member_id == sender {
136: user = true;
137: }
138: };
139: if ! me { bail!("I need to be admin on that channel."); };
140: if ! user { bail!("You should be admin on that channel."); };
141: let mut conn = core.db.begin().await?;
142: core.send(conn.update(source_id, channel, channel_id, url, iv_hash, url_re, sender).await?, Some(msg.chat.get_id()), None).await?;
143: Ok(())
144: }