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|
use std::{
fs::{self, DirEntry, File, OpenOptions, ReadDir},
io,
path::{Path, PathBuf},
};
use anyhow::{Context, Error, Result};
use crate::actions::ActionOptions;
pub struct Locations {
pub repository_path: PathBuf,
pub ka_path: PathBuf,
pub ka_files_path: PathBuf,
}
impl Locations {
pub fn get_repository_paths(&self) -> Result<Vec<RepositoryPaths>, Error> {
let repository_entries =
fs::read_dir(&self.repository_path).context("Failed reading tracked file entries.")?;
let history_entries =
fs::read_dir(&self.ka_files_path).context("Failed reading history file entries.")?;
let tracked_paths = Self::walk_directory(repository_entries, &|entry| {
let file_path = entry.path();
if file_path != self.ka_path {
RepositoryPaths::from_tracked(&self, &file_path).ok()
} else {
None
}
})?;
let deleted_paths = Self::walk_directory(history_entries, &|entry| {
let file_path = entry.path();
let file = RepositoryPaths::from_history(&self, &file_path).ok()?;
match file {
RepositoryPaths::Deleted { .. } => Some(file),
RepositoryPaths::Tracked { .. } => None,
_ => unreachable!(),
}
})?;
let mut all_paths = tracked_paths;
all_paths.extend(deleted_paths);
Ok(all_paths)
}
pub fn tracked_from_history(&self, history_file_path: &Path) -> Result<PathBuf> {
let raw_path = history_file_path.strip_prefix(&self.ka_files_path)?;
Ok(self.repository_path.join(raw_path))
}
pub fn history_from_tracked(&self, tracked_file_path: &Path) -> Result<PathBuf> {
let raw_path = tracked_file_path.strip_prefix(&self.repository_path)?;
Ok(self.ka_files_path.join(raw_path))
}
fn walk_directory(
directory: ReadDir,
filter_map: &dyn Fn(DirEntry) -> Option<RepositoryPaths>,
) -> Result<Vec<RepositoryPaths>> {
let mut entries = Vec::new();
for res in directory {
let entry = res?;
let file_type = entry.file_type()?;
if file_type.is_dir() {
let nested_directory = fs::read_dir(entry.path())?;
let nested_paths = Self::walk_directory(nested_directory, filter_map)?;
entries.extend(nested_paths);
} else {
if let Some(paths) = filter_map(entry) {
entries.push(paths);
}
}
}
Ok(entries)
}
}
impl From<&ActionOptions> for Locations {
fn from(options: &ActionOptions) -> Self {
let ka_path = options.repository_path.join(".ka");
let ka_files_path = ka_path.join("files");
Self {
repository_path: options.repository_path.clone(),
ka_path,
ka_files_path,
}
}
}
pub enum RepositoryPaths {
Deleted(FileDeleted),
Untracked(FileUntracked),
Tracked(FileTracked),
}
impl RepositoryPaths {
pub fn from_history(locations: &Locations, history_file_path: &Path) -> Result<Self> {
let tracked_path = locations.tracked_from_history(history_file_path)?;
Ok(if !tracked_path.exists() {
RepositoryPaths::Deleted(FileDeleted {
history_path: history_file_path.to_path_buf(),
})
} else {
RepositoryPaths::Tracked(FileTracked {
history_path: history_file_path.to_path_buf(),
tracked_path,
})
})
}
pub fn from_tracked(locations: &Locations, tracked_file_path: &Path) -> Result<Self> {
let history_path = locations.history_from_tracked(tracked_file_path)?;
Ok(if !history_path.exists() {
RepositoryPaths::Untracked(FileUntracked {
path: tracked_file_path.to_path_buf(),
})
} else {
RepositoryPaths::Tracked(FileTracked {
history_path,
tracked_path: tracked_file_path.to_path_buf(),
})
})
}
}
pub struct FileDeleted {
history_path: PathBuf,
}
impl FileDeleted {
pub fn load_history_file(&self) -> io::Result<File> {
OpenOptions::new()
.write(true)
.read(true)
.open(&self.history_path)
}
pub fn create_tracked_file(&self, locations: &Locations) -> Result<File> {
Ok(File::create(
locations.tracked_from_history(&self.history_path)?,
)?)
}
}
pub struct FileUntracked {
path: PathBuf,
}
impl FileUntracked {
pub fn load_file(&self) -> io::Result<File> {
OpenOptions::new().read(true).open(&self.path)
}
pub fn create_history_file(&self, locations: &Locations) -> Result<File> {
let history_path = locations.history_from_tracked(&self.path)?;
if let Some(parent_path) = history_path.parent(){
if !parent_path.exists() {
fs::create_dir_all(parent_path)?;
}
}
Ok(File::create(history_path)?)
}
}
pub struct FileTracked {
history_path: PathBuf,
tracked_path: PathBuf,
}
impl FileTracked {
pub fn load_history_file(&self) -> io::Result<File> {
OpenOptions::new()
.write(true)
.read(true)
.open(&self.history_path)
}
pub fn load_tracked_file(&self) -> io::Result<File> {
File::open(&self.tracked_path)
}
pub fn create_tracked_file(&self) -> io::Result<File> {
File::create(&self.tracked_path)
}
}
|
