use crate::colors;
use crate::config::Config;
use crate::output;
use crate::path_display;
use std::ffi::OsStr;
use std::path::Path;
pub(super) fn link_conflict_render_lines(
config: &Config,
conflicts: &[crate::bin_links::LinkConflict],
category_hint: Option<&str>,
) -> Vec<String> {
let mut rendered = Vec::new();
for conflict in conflicts {
let lines = link_conflict_detail_lines(config, conflict, category_hint);
if let Some((first, rest)) = lines.split_first() {
let command = conflict
.link_path
.file_name()
.and_then(OsStr::to_str)
.unwrap_or("unknown");
rendered.push(output::detail_line_text(
"Link Conflict",
&colors::yellow(command),
Some(first.clone()),
));
for line in rest {
rendered.push(format!("{}{}", " ".repeat(16), colors::dim(line)));
}
}
}
rendered
}
fn link_conflict_detail_lines(
config: &Config,
conflict: &crate::bin_links::LinkConflict,
category_hint: Option<&str>,
) -> Vec<String> {
let link = path_display::format_home(&conflict.link_path, &config.home_dir);
let wanted = path_display::format_home(&conflict.source, &config.home_dir);
let mut lines = Vec::new();
match conflict.kind {
crate::bin_links::LinkConflictKind::DuplicateName => {
lines.push("duplicate requested command".to_string());
}
crate::bin_links::LinkConflictKind::ExistingEntry => {
lines.push(format!(
"existing: {}",
describe_existing_link(&conflict.link_path, &link)
));
}
}
lines.push(format!("wanted: {wanted}"));
lines.push(format!(
"fix: remove {link} or run `{}`",
reinstall_command(config, category_hint, &conflict.source)
));
lines
}
fn describe_existing_link(path: &Path, display_path: &str) -> String {
match std::fs::symlink_metadata(path) {
Ok(meta) if meta.file_type().is_symlink() => match std::fs::read_link(path) {
Ok(target) => format!("{display_path} -> {}", path_display::format(&target)),
Err(_) => format!("{display_path} -> unreadable target"),
},
Ok(meta) if meta.is_dir() => format!("directory {display_path}"),
Ok(_) => format!("file {display_path}"),
Err(_) => format!("{display_path} no longer exists"),
}
}
fn reinstall_command(config: &Config, category_hint: Option<&str>, source: &Path) -> String {
if let Some(category) = category_hint {
return format!("shine install shell/{category} --replace-managed");
}
if let Some(category) = infer_shell_category(config, source) {
return format!("shine install shell/{category} --replace-managed");
}
"shine shell install --replace-managed".to_string()
}
fn infer_shell_category(config: &Config, source: &Path) -> Option<String> {
shell_category_after_root(source.strip_prefix(config.presets_dir()).ok()?)
.or_else(|| shell_category_after_root(source.strip_prefix(config.rendered_dir()).ok()?))
}
fn shell_category_after_root(path: &Path) -> Option<String> {
let mut components = path.components();
if components.next()?.as_os_str() != OsStr::new("shell") {
return None;
}
components.next()?.as_os_str().to_str().map(str::to_string)
}
#[cfg(all(test, unix))]
mod tests {
use super::*;
use std::path::PathBuf;
async fn make_temp_dir() -> PathBuf {
crate::test_support::make_temp_dir("shine-shell").await
}
fn config_with_deepseek_key(dir: &Path) -> Config {
let mut config = Config::new_for_test(dir);
config
.env
.insert("DEEPSEEK_API_KEY".into(), "test-deepseek-key".into());
config
}
#[cfg(unix)]
#[tokio::test]
async fn link_conflict_detail_describes_existing_file() {
let dir = make_temp_dir().await;
let config = config_with_deepseek_key(&dir);
tokio::fs::create_dir_all(config.bin_dir()).await.unwrap();
let link_path = config.bin_dir().join("setproxy");
let source = config.presets_dir().join("shell/proxy/set_proxy.sh");
tokio::fs::write(&link_path, b"custom command")
.await
.unwrap();
let conflict = crate::bin_links::LinkConflict {
link_path: link_path.clone(),
source: source.clone(),
kind: crate::bin_links::LinkConflictKind::ExistingEntry,
};
let lines = link_conflict_detail_lines(&config, &conflict, Some("proxy"));
assert_eq!(lines[0], "existing: file ~/bin/setproxy");
assert_eq!(lines[1], "wanted: ~/presets/shell/proxy/set_proxy.sh");
assert_eq!(
lines[2],
"fix: remove ~/bin/setproxy or run `shine install shell/proxy --replace-managed`"
);
tokio::fs::remove_dir_all(&dir).await.unwrap();
}
#[cfg(unix)]
#[tokio::test]
async fn link_conflict_detail_describes_stale_symlink() {
let dir = make_temp_dir().await;
let config = config_with_deepseek_key(&dir);
tokio::fs::create_dir_all(config.bin_dir()).await.unwrap();
tokio::fs::create_dir_all(config.presets_dir().join("shell/proxy"))
.await
.unwrap();
let link_path = config.bin_dir().join("setproxy");
let source = config.presets_dir().join("shell/proxy/set_proxy.sh");
let other = dir.join("other-setproxy");
tokio::fs::write(&other, b"#!/bin/sh\n").await.unwrap();
tokio::fs::symlink(&other, &link_path).await.unwrap();
let conflict = crate::bin_links::LinkConflict {
link_path,
source,
kind: crate::bin_links::LinkConflictKind::ExistingEntry,
};
let lines = link_conflict_detail_lines(&config, &conflict, None);
assert!(lines[0].starts_with("existing: ~/bin/setproxy -> "));
assert!(lines[0].contains("other-setproxy"));
assert_eq!(lines[1], "wanted: ~/presets/shell/proxy/set_proxy.sh");
assert_eq!(
lines[2],
"fix: remove ~/bin/setproxy or run `shine install shell/proxy --replace-managed`"
);
tokio::fs::remove_dir_all(&dir).await.unwrap();
}
}