Lines of
src/command.rs
from check-in 409eb5bafc
that are changed by the sequence of edits moving toward
check-in ec2eac7ea2:
1: use anyhow::{bail, Context, Result};
2: use crate::core::Core;
3: use lazy_static::lazy_static;
4: use regex::Regex;
5: use sedregex::ReplaceCommand;
6: use std::borrow::Cow;
7:
8: lazy_static! {
9: static ref RE_USERNAME: Regex = Regex::new(r"^@[a-zA-Z][a-zA-Z0-9_]+$").unwrap();
409eb5bafc 2022-06-12 10: static ref RE_LINK: Regex = Regex::new(r"^https?://[a-zA-Z.0-9-]+/[-_a-zA-Z.0-9/?=]+$").unwrap();
11: static ref RE_IV_HASH: Regex = Regex::new(r"^[a-f0-9]{14}$").unwrap();
12: }
13:
14: pub async fn start(core: &Core, sender: telegram_bot::UserId) -> Result<()> {
15: core.send("We are open. Probably. Visit [channel](https://t.me/rsstg_bot_help/3) for details.", Some(sender), None).await?;
16: Ok(())
17: }
18:
19: pub async fn list(core: &Core, sender: telegram_bot::UserId) -> Result<()> {
20: core.send(core.list(sender).await?, Some(sender), Some(telegram_bot::types::ParseMode::MarkdownV2)).await?;
21: Ok(())
22: }
23:
24: pub async fn command(core: &Core, sender: telegram_bot::UserId, command: Vec<&str>) -> Result<()> {
25: if command.len() >= 2 {
26: let msg: Cow<str> = match &command[1].parse::<i32>() {
27: Err(err) => format!("I need a number.\n{}", &err).into(),
28: Ok(number) => match command[0] {
29: "/check" => core.check(number, sender, false).await
30: .context("Channel check failed.")?,
31: "/clean" => core.clean(number, sender).await?,
32: "/enable" => core.enable(number, sender).await?.into(),
33: "/delete" => core.delete(number, sender).await?,
34: "/disable" => core.disable(number, sender).await?.into(),
35: _ => bail!("Command {} not handled.", &command[0]),
36: },
37: };
38: core.send(msg, Some(sender), None).await?;
39: } else {
40: core.send("This command needs a number.", Some(sender), None).await?;
41: }
42: Ok(())
43: }
44:
45: pub async fn update(core: &Core, sender: telegram_bot::UserId, command: Vec<&str>) -> Result<()> {
46: let mut source_id: Option<i32> = None;
47: let at_least = "Requires at least 3 parameters.";
48: let mut i_command = command.iter();
49: let first_word = i_command.next().context(at_least)?;
50: match *first_word {
51: "/update" => {
52: let next_word = i_command.next().context(at_least)?;
53: source_id = Some(next_word.parse::<i32>()
54: .context(format!("I need a number, but got {}.", next_word))?);
55: },
56: "/add" => {},
57: _ => bail!("Passing {} is not possible here.", first_word),
58: };
59: let (channel, url, iv_hash, url_re) = (
60: i_command.next().context(at_least)?,
61: i_command.next().context(at_least)?,
62: i_command.next(),
63: i_command.next());
64: if ! RE_USERNAME.is_match(channel) {
65: bail!("Usernames should be something like \"@\\[a\\-zA\\-Z]\\[a\\-zA\\-Z0\\-9\\_]+\", aren't they?\nNot {:?}", &channel);
66: };
67: if ! RE_LINK.is_match(url) {
68: bail!("Link should be a link to atom/rss feed, something like \"https://domain/path\".\nNot {:?}", &url);
69: }
70: let iv_hash = match iv_hash {
71: Some(hash) => {
72: match *hash {
73: "-" => None,
74: thing => {
75: if ! RE_IV_HASH.is_match(thing) {
76: bail!("IV hash should be 14 hex digits.\nNot {:?}", thing);
77: };
78: Some(thing)
79: },
80: }
81: },
82: None => None,
83: };
84: let url_re = match url_re {
85: Some(re) => {
86: match *re {
87: "-" => None,
88: thing => {
89: let _url_rex = ReplaceCommand::new(thing).context("Regexp parsing error:")?;
90: Some(thing)
91: }
92: }
93: },
94: None => None,
95: };
96: let channel_id = i64::from(core.tg.send(telegram_bot::GetChat::new(telegram_bot::ChatRef::ChannelUsername(channel.to_string()))).await?.id());
97: let chan_adm = core.tg.send(telegram_bot::GetChatAdministrators::new(telegram_bot::ChatRef::ChannelUsername(channel.to_string()))).await
98: .context("Sorry, I have no access to that chat.")?;
99: let (mut me, mut user) = (false, false);
100: for admin in chan_adm {
101: if admin.user.id == core.my.id {
102: me = true;
103: };
104: if admin.user.id == sender {
105: user = true;
106: };
107: };
108: if ! me { bail!("I need to be admin on that channel."); };
109: if ! user { bail!("You should be admin on that channel."); };
110: core.send(core.update(source_id, channel, channel_id, url, iv_hash, url_re, sender).await?, Some(sender), None).await?;
111: Ok(())
112: }