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use std::{
fs,
path::{Path, PathBuf},
};
use anyhow::{Context, Result};
use displaydoc::Display;
use git2::Repository;
use log::{debug, error, info, trace};
use rayon::prelude::*;
use thiserror::Error;
use walkdir::WalkDir;
use self::GenerateGitError as E;
use super::GENERATED_PRELUDE_COMMENT;
use crate::{
args::GenerateGitConfig,
tasks::{
git::{GitConfig, GitRemote},
task::Task,
ResolveEnv,
},
};
pub fn run(generate_git_configs: &[GenerateGitConfig]) -> Result<()> {
let errors: Vec<_> = generate_git_configs
.par_iter()
.map(|config| run_single(config))
.filter_map(Result::err)
.collect();
if errors.is_empty() {
Ok(())
} else {
for error in &errors {
error!("{:?}", error);
}
let first_error = errors.into_iter().next().ok_or(E::UnexpectedNone)?;
Err(first_error)
}
}
pub fn run_single(generate_git_config: &GenerateGitConfig) -> Result<()> {
debug!(
"Generating git config for: {path}",
path = generate_git_config.path.display()
);
let mut git_task = Task::from(&generate_git_config.path)?;
debug!("Existing git config: {:?}", git_task);
let mut git_configs = Vec::new();
for path in find_repos(
&generate_git_config.search_paths,
generate_git_config.excludes.as_ref(),
) {
git_configs.push(parse_git_config(
&path,
generate_git_config.prune,
&generate_git_config.remote_order,
)?);
}
git_configs.sort_unstable_by(|c1, c2| c1.path.cmp(&c2.path));
let toml_configs = git_configs
.into_iter()
.map(toml::Value::try_from)
.collect::<Result<Vec<_>, _>>()?;
git_task.config.data = Some(toml_configs.into());
debug!("New git config: {:?}", git_task);
let mut serialized_task = GENERATED_PRELUDE_COMMENT.to_owned();
serialized_task.push_str(&toml::to_string_pretty(&git_task.config)?);
trace!("New toml file: <<<{}>>>", serialized_task);
fs::write(&generate_git_config.path, serialized_task)?;
info!(
"Git repo layout generated for task '{}' and written to '{:?}'",
git_task.name, generate_git_config.path
);
Ok(())
}
#[allow(clippy::use_self)]
impl ResolveEnv for Vec<GenerateGitConfig> {
fn resolve_env<F>(&mut self, env_fn: F) -> Result<()>
where
F: Fn(&str) -> Result<String>,
{
for config in self.iter_mut() {
config.path = PathBuf::from(env_fn(&config.path.to_string_lossy())?);
let mut new_search_paths = Vec::new();
for search_path in &config.search_paths {
new_search_paths.push(PathBuf::from(env_fn(&search_path.to_string_lossy())?));
}
config.search_paths = new_search_paths;
if let Some(excludes) = config.excludes.as_ref() {
let mut new_excludes = Vec::new();
for exclude in excludes {
new_excludes.push(env_fn(exclude)?);
}
config.excludes = Some(new_excludes);
}
}
Ok(())
}
}
fn find_repos(search_paths: &[PathBuf], excludes: Option<&Vec<String>>) -> Vec<PathBuf> {
let mut repo_paths = Vec::new();
for path in search_paths {
trace!("Searching in '{}'", &path.display());
for entry in WalkDir::new(path)
.into_iter()
.filter_entry(|e| {
if let Some(ex) = excludes {
let s = e.path().to_str().unwrap_or("");
for exclude in ex {
if s.contains(exclude) {
return false;
}
}
true
} else {
true
}
})
.filter_map(Result::ok)
.filter(|e| e.file_type().is_dir() && e.file_name() == ".git")
{
trace!("Entry: {:?}", &entry);
let mut repo_path = entry.into_path();
repo_path.pop();
repo_paths.push(repo_path);
}
}
debug!("Found repo paths: {:?}", repo_paths);
repo_paths
}
fn parse_git_config(path: &Path, prune: bool, remote_order: &[String]) -> Result<GitConfig> {
let repo = Repository::open(&path)?;
let mut sorted_remote_names = Vec::new();
{
let mut remote_names: Vec<String> = Vec::new();
for opt_name in &repo.remotes()? {
remote_names.push(opt_name.ok_or(E::InvalidUtf8)?.to_owned());
}
for order in remote_order {
if let Some(pos) = remote_names.iter().position(|el| el == order) {
sorted_remote_names.push(remote_names.remove(pos));
}
}
sorted_remote_names.extend(remote_names.into_iter());
}
let mut remotes = Vec::new();
for name in sorted_remote_names {
remotes.push(GitRemote::from(
&repo
.find_remote(&name)
.with_context(|| E::InvalidRemote { name })?,
)?);
}
let config = GitConfig {
path: path.to_string_lossy().to_string(),
branch: None,
remotes,
prune,
};
trace!("Parsed GitConfig: {:?}", &config);
Ok(config)
}
#[derive(Error, Debug, Display)]
pub enum GenerateGitError {
InvalidUtf8,
InvalidRemote { name: String },
UnexpectedNone,
}