messaging_api/
commands.rs

1use serde::{Deserialize, Serialize};
2
3#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
4#[serde(tag = "command", rename_all = "snake_case")]
5pub enum MessagingSystemCommand {
6    Info,
7    Help,
8    Rotate,
9    Switch { selection: usize },
10}
11
12#[derive(Debug, Clone, Copy, PartialEq, Eq)]
13pub enum MessagingCommandParse {
14    NotCommand,
15    InvalidSwitch,
16    Command(MessagingSystemCommand),
17}
18
19pub fn parse_messaging_command(input: &str) -> MessagingCommandParse {
20    let command = input.trim().to_ascii_lowercase();
21    match command.as_str() {
22        "/info" => MessagingCommandParse::Command(MessagingSystemCommand::Info),
23        "/help" => MessagingCommandParse::Command(MessagingSystemCommand::Help),
24        "/new" | "/clear" => MessagingCommandParse::Command(MessagingSystemCommand::Rotate),
25        _ if command.starts_with("/switch") => {
26            let suffix = command["/switch".len()..].trim();
27            match suffix
28                .parse::<usize>()
29                .ok()
30                .filter(|selection| *selection > 0)
31            {
32                Some(selection) => {
33                    MessagingCommandParse::Command(MessagingSystemCommand::Switch { selection })
34                }
35                None => MessagingCommandParse::InvalidSwitch,
36            }
37        }
38        _ => MessagingCommandParse::NotCommand,
39    }
40}
41
42pub fn sort_scope_ids(scope_ids: &mut [String]) {
43    scope_ids.sort();
44}
45
46#[cfg(test)]
47mod tests {
48    use super::*;
49
50    #[test]
51    fn parser_is_case_insensitive_and_accepts_compact_switch() {
52        assert_eq!(
53            parse_messaging_command(" /SWITCH2 "),
54            MessagingCommandParse::Command(MessagingSystemCommand::Switch { selection: 2 })
55        );
56        assert_eq!(
57            parse_messaging_command("/switch 0"),
58            MessagingCommandParse::InvalidSwitch
59        );
60        assert_eq!(
61            parse_messaging_command("hello"),
62            MessagingCommandParse::NotCommand
63        );
64    }
65}
messaging_api/commands.rs

messaging_api/
commands.rs
