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use std::sync::LazyLock;
use regex::Regex;
use crate::config::System;
use twilight_mention::ParseMention;
use twilight_model::id::{marker::UserMarker, Id};
use super::{FullMessage, MemberId, MessageId, Timestamp};
pub enum ParsedMessage {
Command(Command),
ProxiedMessage {
member_id: MemberId,
message_content: String,
latch: bool,
},
UnproxiedMessage,
LatchClear(MemberId),
// TODO: Figure out how to represent emotes
EmoteAdd(MemberId, MessageId, ()),
EmoteRemove(MemberId, MessageId, ()),
}
pub enum Command {
Edit(MessageId, String),
Reproxy(MemberId, MessageId),
Nick(MemberId, String),
ReloadSystemConfig,
ExitSéance,
UnknownCommand,
}
pub struct MessageParser {}
static CORRECTION_REGEX: LazyLock<Regex> = LazyLock::new(|| {
Regex::new(r"^\*\B+$").unwrap()
});
impl MessageParser {
pub fn parse(message: &FullMessage, secondary_message: Option<FullMessage>, system_config: &System, latch_state: Option<(MemberId, Timestamp)>) -> ParsedMessage {
if message.content == r"\\" {
return ParsedMessage::LatchClear(if let Some((member_id, _)) = latch_state {
member_id
} else {
0
})
}
if message.content.starts_with(r"\") {
return ParsedMessage::UnproxiedMessage
}
if message.content.starts_with(r"!") {
return ParsedMessage::Command(
MessageParser::parse_command(message, secondary_message, system_config, latch_state)
);
}
if CORRECTION_REGEX.is_match(message.content.as_str()) {
if let Some(parse) = MessageParser::check_correction(message, secondary_message) {
return parse
}
}
if let Some(parse) = MessageParser::check_member_patterns(message, system_config) {
return parse
}
if let Some(parse) = MessageParser::check_autoproxy(message, latch_state) {
return parse
}
// If nothing else
ParsedMessage::UnproxiedMessage
}
fn parse_command(message: &FullMessage, secondary_message: Option<FullMessage>, system_config: &System, latch_state: Option<(MemberId, Timestamp)>) -> Command {
let mut words = message.content.strip_prefix("!").unwrap().split_whitespace();
let first_word = words.next();
match first_word {
Some(command_name) => match command_name {
"edit" => return Command::Edit(secondary_message.unwrap().id, words.remainder().unwrap().to_string()),
"nick" => {
if let Some(member) = MessageParser::match_member(words.next(), system_config) {
return Command::Nick(member, words.remainder().unwrap().to_string());
}
},
"reproxy" => {
if let Some(member) = MessageParser::match_member(words.next(), system_config) {
return Command::Reproxy(member, secondary_message.unwrap().id);
}
},
_ => (),
},
None => return Command::UnknownCommand,
}
// If unable to parse
Command::UnknownCommand
}
fn match_member(maybe_mention: Option<&str>, system_config: &System) -> Option<MemberId> {
if let Some(maybe_mention) = maybe_mention {
if let Ok(mention) = Id::<UserMarker>::parse(maybe_mention) {
system_config.members.iter().enumerate()
.filter(|(_id, m)| m.user_id.is_some())
.find(|(_id, m)| m.user_id.unwrap() == mention)
.map(|(id, _m)| id)
} else {
None
}
} else {
None
}
}
fn check_correction(message: &FullMessage, secondary_message: Option<FullMessage>) -> Option<ParsedMessage> {
None
}
fn check_member_patterns(message: &FullMessage, system_config: &System) -> Option<ParsedMessage> {
let matches_prefix = system_config.members.iter().enumerate().find_map(|(member_id, member)|
Some((member_id, member.matches_proxy_prefix(&message)?))
);
if let Some((member_id, matched_content)) = matches_prefix {
Some(ParsedMessage::ProxiedMessage {
member_id,
message_content: matched_content.to_string(),
latch: true,
})
} else {
None
}
}
fn check_autoproxy(message: &FullMessage, latch_state: Option<(MemberId, Timestamp)>) -> Option<ParsedMessage> {
if let Some((member_id, _)) = latch_state {
Some(ParsedMessage::ProxiedMessage {
member_id,
message_content: message.content.clone(),
latch: true,
})
} else {
None
}
}
}
impl crate::config::Member {
pub fn matches_proxy_prefix<'a>(&self, message: &'a FullMessage) -> Option<&'a str> {
match self.message_pattern.captures(message.content.as_str()) {
None => None,
Some(captures) => match captures.name("content") {
None => None,
Some(matched_content) => Some(matched_content.as_str()),
},
}
}
}
|
