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use std::{borrow::Cow, error::Error, fmt::Display, str::FromStr};
#[cfg(feature = "sqlx")]
use sqlx::Sqlite;
#[derive(PartialEq, Debug, Clone, Eq, Hash)]
pub struct JID {
// TODO: validate localpart (length, char]
pub localpart: Option<String>,
pub domainpart: String,
pub resourcepart: Option<String>,
}
impl<'a> Into<Cow<'a, str>> for &'a JID {
fn into(self) -> Cow<'a, str> {
let a = self.to_string();
Cow::Owned(a)
}
}
impl Display for JID {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
if let Some(localpart) = &self.localpart {
f.write_str(localpart)?;
f.write_str("@")?;
}
f.write_str(&self.domainpart)?;
if let Some(resourcepart) = &self.resourcepart {
f.write_str("/")?;
f.write_str(resourcepart)?;
}
Ok(())
}
}
#[cfg(feature = "sqlx")]
impl sqlx::Type<Sqlite> for JID {
fn type_info() -> <Sqlite as sqlx::Database>::TypeInfo {
<&str as sqlx::Type<Sqlite>>::type_info()
}
}
#[cfg(feature = "sqlx")]
impl sqlx::Decode<'_, Sqlite> for JID {
fn decode(
value: <Sqlite as sqlx::Database>::ValueRef<'_>,
) -> Result<Self, sqlx::error::BoxDynError> {
let value = <&str as sqlx::Decode<Sqlite>>::decode(value)?;
Ok(value.parse()?)
}
}
#[cfg(feature = "sqlx")]
impl sqlx::Encode<'_, Sqlite> for JID {
fn encode_by_ref(
&self,
buf: &mut <Sqlite as sqlx::Database>::ArgumentBuffer<'_>,
) -> Result<sqlx::encode::IsNull, sqlx::error::BoxDynError> {
let jid = self.to_string();
<String as sqlx::Encode<Sqlite>>::encode(jid, buf)
}
}
#[derive(Debug, Clone)]
pub enum JIDError {
NoResourcePart,
ParseError(ParseError),
}
impl Display for JIDError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
JIDError::NoResourcePart => f.write_str("resourcepart missing"),
JIDError::ParseError(parse_error) => parse_error.fmt(f),
}
}
}
impl Error for JIDError {}
#[derive(Debug, Clone)]
pub enum ParseError {
Empty,
Malformed(String),
}
impl Display for ParseError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
ParseError::Empty => f.write_str("JID parse error: Empty"),
ParseError::Malformed(j) => {
f.write_str(format!("JID parse error: malformed; got '{}'", j).as_str())
}
}
}
}
impl Error for ParseError {}
impl JID {
pub fn new(
localpart: Option<String>,
domainpart: String,
resourcepart: Option<String>,
) -> Self {
Self {
localpart,
domainpart: domainpart.parse().unwrap(),
resourcepart,
}
}
pub fn as_bare(&self) -> Self {
Self {
localpart: self.localpart.clone(),
domainpart: self.domainpart.clone(),
resourcepart: None,
}
}
pub fn as_full(&self) -> Result<&Self, JIDError> {
if let Some(_) = self.resourcepart {
Ok(&self)
} else {
Err(JIDError::NoResourcePart)
}
}
}
impl FromStr for JID {
type Err = ParseError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let split: Vec<&str> = s.split('@').collect();
match split.len() {
0 => Err(ParseError::Empty),
1 => {
let split: Vec<&str> = split[0].split('/').collect();
match split.len() {
1 => Ok(JID::new(None, split[0].to_string(), None)),
2 => Ok(JID::new(
None,
split[0].to_string(),
Some(split[1].to_string()),
)),
_ => Err(ParseError::Malformed(s.to_string())),
}
}
2 => {
let split2: Vec<&str> = split[1].split('/').collect();
match split2.len() {
1 => Ok(JID::new(
Some(split[0].to_string()),
split2[0].to_string(),
None,
)),
2 => Ok(JID::new(
Some(split[0].to_string()),
split2[0].to_string(),
Some(split2[1].to_string()),
)),
_ => Err(ParseError::Malformed(s.to_string())),
}
}
_ => Err(ParseError::Malformed(s.to_string())),
}
}
}
impl TryFrom<String> for JID {
type Error = ParseError;
fn try_from(value: String) -> Result<Self, Self::Error> {
value.parse()
}
}
impl TryFrom<&str> for JID {
type Error = ParseError;
fn try_from(value: &str) -> Result<Self, Self::Error> {
value.parse()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn jid_to_string() {
assert_eq!(
JID::new(Some("cel".into()), "blos.sm".into(), None).to_string(),
"cel@blos.sm".to_owned()
);
}
#[test]
fn parse_full_jid() {
assert_eq!(
"cel@blos.sm/greenhouse".parse::<JID>().unwrap(),
JID::new(
Some("cel".into()),
"blos.sm".into(),
Some("greenhouse".into())
)
)
}
#[test]
fn parse_bare_jid() {
assert_eq!(
"cel@blos.sm".parse::<JID>().unwrap(),
JID::new(Some("cel".into()), "blos.sm".into(), None)
)
}
#[test]
fn parse_domain_jid() {
assert_eq!(
"component.blos.sm".parse::<JID>().unwrap(),
JID::new(None, "component.blos.sm".into(), None)
)
}
#[test]
fn parse_full_domain_jid() {
assert_eq!(
"component.blos.sm/bot".parse::<JID>().unwrap(),
JID::new(None, "component.blos.sm".into(), Some("bot".into()))
)
}
}
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