use crate::{
constants::{LF, SPACE},
types::Result,
};
use super::{Error, ErrorKind};
pub struct UniqueID(u32, String);
pub enum UniqueIDResponse {
UniqueID(UniqueID),
UniqueIDList(Vec<UniqueID>),
}
impl UniqueIDResponse {
pub fn is_list(&self) -> bool {
match self {
UniqueIDResponse::UniqueID(_) => false,
UniqueIDResponse::UniqueIDList(_) => true,
}
}
}
impl UniqueID {
pub fn unique_id(&self) -> &str {
&self.1
}
pub fn into_unique_id(self) -> String {
self.1
}
pub fn count(&self) -> &u32 {
&self.0
}
pub fn into_count(self) -> u32 {
self.0
}
pub fn from_response<S: AsRef<str>>(response: S) -> Result<UniqueIDResponse> {
let response = response.as_ref();
let end_of_line = char::from_u32(LF as u32).unwrap();
let split = response
.split(end_of_line)
.filter(|item| item.trim().len() != 0);
let mut results: Vec<UniqueID> = Vec::new();
for unparsed in split {
let unparsed = unparsed.trim().to_ascii_lowercase();
let mut count_and_id = unparsed.split(SPACE);
let count = count_and_id.next().ok_or(Error::new(
ErrorKind::InvalidResponse,
"Missing count from uidl response",
))?;
let count = count.parse::<u32>()?;
let unique_id = count_and_id.next().ok_or(Error::new(
ErrorKind::InvalidResponse,
"Missing unique id from uidl response",
))?;
results.push(UniqueID(count, unique_id.to_string()));
}
if results.len() == 1 {
let result = std::mem::take(&mut results[0]);
Ok(UniqueIDResponse::UniqueID(result))
} else {
Ok(UniqueIDResponse::UniqueIDList(results))
}
}
}
impl Default for UniqueID {
fn default() -> Self {
Self(0, String::new())
}
}
#[cfg(test)]
mod test {
use super::UniqueID;
#[test]
fn test_parse_unique_id() {
let to_parse = "21 super_unique";
let result = UniqueID::from_response(to_parse);
assert!(result.is_ok());
let to_parse = "\r\n\r 21 super_unique\n";
let result = UniqueID::from_response(to_parse);
assert!(!result.unwrap().is_list());
let to_parse = "21 super_unique\n\r42 yeah";
let result = UniqueID::from_response(to_parse);
assert!(result.unwrap().is_list());
}
}