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use std::collections::{hash_map::Entry, HashMap};
use std::path::{Path, PathBuf};
use crate::sort;
use crate::structs::JoshutoDirList;
pub trait DirectoryHistory {
fn populate_to_root(&mut self, pathbuf: &PathBuf, sort_option: &sort::SortOption);
fn pop_or_create(
&mut self,
path: &Path,
sort_option: &sort::SortOption,
) -> Result<JoshutoDirList, std::io::Error>;
fn get_mut_or_create(
&mut self,
path: &Path,
sort_option: &sort::SortOption,
) -> Result<&mut JoshutoDirList, std::io::Error>;
fn depreciate_all_entries(&mut self);
}
impl DirectoryHistory for HashMap<PathBuf, JoshutoDirList> {
fn populate_to_root(&mut self, pathbuf: &PathBuf, sort_option: &sort::SortOption) {
let mut ancestors = pathbuf.ancestors();
match ancestors.next() {
None => {}
Some(mut ancestor) => {
for curr in ancestors {
match JoshutoDirList::new(curr.to_path_buf().clone(), sort_option) {
Ok(mut s) => {
let index = s.contents.iter().enumerate().find_map(|(i, dir)| {
if dir.path == ancestor {
Some(i)
} else {
None
}
});
if let Some(i) = index {
s.index = Some(i);
}
self.insert(curr.to_path_buf(), s);
}
Err(e) => eprintln!("populate_to_root: {}", e),
}
ancestor = curr;
}
}
}
}
fn pop_or_create(
&mut self,
path: &Path,
sort_option: &sort::SortOption,
) -> Result<JoshutoDirList, std::io::Error> {
match self.remove(&path.to_path_buf()) {
Some(mut dir_entry) => {
if dir_entry.need_update() {
dir_entry.update_contents(&sort_option)?
}
Ok(dir_entry)
}
None => {
let path_clone = path.to_path_buf();
JoshutoDirList::new(path_clone, &sort_option)
}
}
}
fn get_mut_or_create(
&mut self,
path: &Path,
sort_option: &sort::SortOption,
) -> Result<&mut JoshutoDirList, std::io::Error> {
match self.entry(path.to_path_buf().clone()) {
Entry::Occupied(entry) => {
/*
if dir_entry.need_update() {
dir_entry.update_contents(&sort_option)?;
}
*/
Ok(entry.into_mut())
}
Entry::Vacant(entry) => {
let s = JoshutoDirList::new(path.to_path_buf(), &sort_option)?;
Ok(entry.insert(s))
}
}
}
fn depreciate_all_entries(&mut self) {
self.iter_mut().for_each(|(_, v)| v.depreciate());
}
}
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