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use std::collections::{BTreeMap, HashMap};
use std::path::PathBuf;
use anyhow::Result;
use crate::process::ProcessExecutor;
use crate::util::hg::HgUtil;
use super::{DistReference, DriverConfig, SourceReference, VcsDriver};
/// Mercurial VCS driver.
///
/// Corresponds to Composer's `Repository\Vcs\HgDriver`.
pub struct HgDriver {
url: String,
repo_dir: Option<PathBuf>,
root_identifier: Option<String>,
tags: Option<BTreeMap<String, String>>,
branches: Option<BTreeMap<String, String>>,
info_cache: HashMap<String, Option<serde_json::Value>>,
hg_util: HgUtil,
config: DriverConfig,
}
impl HgDriver {
pub fn new(url: &str, config: DriverConfig) -> Self {
let process = ProcessExecutor::new();
Self {
url: url.to_string(),
repo_dir: None,
root_identifier: None,
tags: None,
branches: None,
info_cache: HashMap::new(),
hg_util: HgUtil::new(process),
config,
}
}
pub fn supports(url: &str) -> bool {
url.starts_with("hg://") || url.contains("hg.") || url.ends_with(".hg")
}
fn get_repo_dir(&self) -> Result<&PathBuf> {
self.repo_dir
.as_ref()
.ok_or_else(|| anyhow::anyhow!("HgDriver not initialized"))
}
}
impl VcsDriver for HgDriver {
fn initialize(&mut self) -> Result<()> {
let cache_dir = self.config.cache_dir.join("hg");
std::fs::create_dir_all(&cache_dir)?;
let repo_dir = cache_dir.join(crate::util::git::GitUtil::sanitize_url(&self.url));
if repo_dir.join(".hg").is_dir() {
// Update existing clone
self.hg_util.execute(&["pull"], Some(&repo_dir))?;
} else {
// Clone without checkout
let dir_str = repo_dir.to_string_lossy().to_string();
self.hg_util
.execute(&["clone", "--noupdate", &self.url, &dir_str], None)?;
}
self.repo_dir = Some(repo_dir.clone());
// Get default branch
let output = self.hg_util.execute(
&["log", "-r", "default", "--template", "{node|short}"],
Some(&repo_dir),
);
self.root_identifier = match output {
Ok(o) if !o.stdout.trim().is_empty() => Some("default".to_string()),
_ => Some("tip".to_string()),
};
Ok(())
}
fn root_identifier(&self) -> &str {
self.root_identifier.as_deref().unwrap_or("default")
}
fn branches(&mut self) -> Result<&BTreeMap<String, String>> {
if self.branches.is_none() {
let repo_dir = self.get_repo_dir()?.clone();
let mut branches = BTreeMap::new();
// Named branches
let output = self.hg_util.execute(&["branches", "-q"], Some(&repo_dir))?;
for name in ProcessExecutor::split_lines(&output.stdout) {
let name = name.trim();
let rev_output = self.hg_util.execute(
&["log", "-r", name, "--template", "{node}"],
Some(&repo_dir),
)?;
branches.insert(name.to_string(), rev_output.stdout.trim().to_string());
}
// Bookmarks
let output = self
.hg_util
.execute_unchecked(&["bookmarks", "-q"], Some(&repo_dir))?;
if output.status == 0 {
for name in ProcessExecutor::split_lines(&output.stdout) {
let name = name.trim();
if !branches.contains_key(name) {
let rev_output = self.hg_util.execute(
&["log", "-r", name, "--template", "{node}"],
Some(&repo_dir),
)?;
branches.insert(name.to_string(), rev_output.stdout.trim().to_string());
}
}
}
self.branches = Some(branches);
}
Ok(self.branches.as_ref().unwrap())
}
fn tags(&mut self) -> Result<&BTreeMap<String, String>> {
if self.tags.is_none() {
let repo_dir = self.get_repo_dir()?.clone();
let output = self.hg_util.execute(&["tags", "-q"], Some(&repo_dir))?;
let mut tags = BTreeMap::new();
for name in ProcessExecutor::split_lines(&output.stdout) {
let name = name.trim();
if name == "tip" {
continue; // Skip the "tip" pseudo-tag
}
let rev_output = self.hg_util.execute(
&["log", "-r", name, "--template", "{node}"],
Some(&repo_dir),
)?;
tags.insert(name.to_string(), rev_output.stdout.trim().to_string());
}
self.tags = Some(tags);
}
Ok(self.tags.as_ref().unwrap())
}
fn composer_information(&mut self, identifier: &str) -> Result<Option<serde_json::Value>> {
if let Some(cached) = self.info_cache.get(identifier) {
return Ok(cached.clone());
}
let content = self.file_content("composer.json", identifier)?;
let value = content.and_then(|c| serde_json::from_str(&c).ok());
self.info_cache
.insert(identifier.to_string(), value.clone());
Ok(value)
}
fn file_content(&self, file: &str, identifier: &str) -> Result<Option<String>> {
let repo_dir = self.get_repo_dir()?;
let output = self
.hg_util
.execute_unchecked(&["cat", "-r", identifier, "--", file], Some(repo_dir))?;
if output.status == 0 {
Ok(Some(output.stdout))
} else {
Ok(None)
}
}
fn change_date(&self, identifier: &str) -> Result<Option<String>> {
let repo_dir = self.get_repo_dir()?;
let output = self.hg_util.execute(
&["log", "-r", identifier, "--template", "{date|isodatesec}"],
Some(repo_dir),
)?;
let date = output.stdout.trim().to_string();
if date.is_empty() {
Ok(None)
} else {
Ok(Some(date))
}
}
fn dist(&self, _identifier: &str) -> Result<Option<DistReference>> {
Ok(None)
}
fn source(&self, identifier: &str) -> SourceReference {
SourceReference {
source_type: "hg".to_string(),
url: self.url.clone(),
reference: identifier.to_string(),
}
}
fn url(&self) -> &str {
&self.url
}
fn cleanup(&mut self) -> Result<()> {
Ok(())
}
}
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