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//! Who wrote or committed a commit. A module of its own so that [`Login`]'s
//! field is private: a git name can't become one by accident, though a
//! hand-built [`GitActor`] or [`Login::unchecked`] can still make any.
use serde::{Deserialize, Serialize};
use crate::api::browse::GitActor;
/// Who wrote or committed a commit, as GitHub knows them. Kept externally
/// tagged in the cache: a login and a git name must not read back alike.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum Person {
/// The account GitHub linked to the commit's email: the only kind of
/// person a profile link may be built from.
User(Login),
/// Only git's name for them, with no account behind it.
Git(String),
/// No author, or an empty name.
Unknown,
}
impl Person {
pub fn login(&self) -> Option<&str> {
match self {
Person::User(Login(login)) => Some(login),
_ => None,
}
}
/// Who git says wrote a commit (read from a clone, not GitHub): their
/// account when the email is the no-reply address GitHub gives it
/// (`123+login@users.noreply.github.com`), which GitHub links to that
/// account too; else their name.
pub fn from_git(name: &str, email: &str) -> Person {
// Matched in place: this runs once per commit.
const NOREPLY: &str = "users.noreply.";
let host = crate::host::current().name();
let host = host.split(':').next().unwrap_or_default();
let login = (email.rsplit_once('@'))
.filter(|(_, domain)| {
let (noreply, rest) = domain.split_at_checked(NOREPLY.len()).unwrap_or_default();
noreply.eq_ignore_ascii_case(NOREPLY) && rest.eq_ignore_ascii_case(host)
})
.map(|(user, _)| user.rsplit('+').next().unwrap_or(user))
.filter(|login| {
!login.is_empty() && login.chars().all(|c| c.is_ascii_alphanumeric() || c == '-')
});
match login {
Some(login) => Person::User(Login(login.to_owned())),
None if !name.trim().is_empty() => Person::Git(name.trim().to_owned()),
None => Person::Unknown,
}
}
/// The text to show. Not a login: never pass it to a URL builder.
pub fn name(&self) -> &str {
match self {
Person::User(Login(name)) | Person::Git(name) => name,
Person::Unknown => "unknown",
}
}
}
/// The login GitHub linked to a commit's email. Made only from a
/// [`GitActor`]'s `user`, by [`Login::unchecked`], or read back from the
/// cache (`Deserialize`, which only the store should use).
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Login(String);
impl Login {
/// A login that didn't come from GitHub: for fixtures and tests.
pub fn unchecked(login: impl Into<String>) -> Login {
Login(login.into())
}
}
impl From<Option<GitActor>> for Person {
fn from(actor: Option<GitActor>) -> Person {
match actor {
Some(GitActor { user: Some(u), .. }) => Person::User(Login(u.login)),
Some(GitActor { name: Some(n), .. }) if !n.is_empty() => Person::Git(n),
_ => Person::Unknown,
}
}
}