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use std::collections::{hash_map::Entry, HashMap};
use std::io::BufRead;
use std::path;
use std::process;
use crate::config::{JoshutoConfig, JoshutoPreviewEntry};
use crate::structs::{JoshutoDirEntry, JoshutoDirList};
use crate::tab::JoshutoTab;
use crate::ui;
use crate::window::panel::JoshutoPanel;
use crate::PREVIEW_T;
pub fn preview_parent(curr_tab: &mut JoshutoTab, win: &JoshutoPanel, config_t: &JoshutoConfig) {
if let Some(path) = curr_tab.curr_path.parent() {
preview_directory(&mut curr_tab.history, path, win, config_t);
} else {
ncurses::werase(win.win);
win.queue_for_refresh();
}
}
pub fn preview_entry(curr_tab: &mut JoshutoTab, win: &JoshutoPanel, config_t: &JoshutoConfig) {
ncurses::werase(win.win);
if let Some(s) = curr_tab.curr_list.get_curr_ref() {
if s.path.is_dir() {
preview_directory(&mut curr_tab.history, s.path.as_path(), win, config_t);
} else if s.metadata.file_type.is_file() {
if s.metadata.len <= config_t.max_preview_size {
preview_file(s, win);
} else {
ui::wprint_err(win, "File size exceeds max preview size");
}
} else {
ui::wprint_err(win, "Not a regular file");
}
}
win.queue_for_refresh();
}
fn preview_directory(
history: &mut HashMap<path::PathBuf, JoshutoDirList>,
path: &path::Path,
win: &JoshutoPanel,
config_t: &JoshutoConfig,
) {
match history.entry(path.to_path_buf().clone()) {
Entry::Occupied(mut entry) => {
win.display_contents(entry.get_mut(), config_t.scroll_offset);
}
Entry::Vacant(entry) => {
if let Ok(s) = JoshutoDirList::new(path.to_path_buf().clone(), &config_t.sort_option) {
win.display_contents(entry.insert(s), config_t.scroll_offset);
}
}
}
win.queue_for_refresh();
}
fn preview_file(entry: &JoshutoDirEntry, win: &JoshutoPanel) {
let path = &entry.path;
match path.extension() {
Some(file_ext) => match PREVIEW_T.extension.get(file_ext.to_str().unwrap()) {
Some(s) => preview_with(path, win, &s),
None => {}
/*
None => if let Some(mimetype) = tree_magic::from_filepath(&path) {
match PREVIEW_T.mimetype.get(mimetype.as_str()) {
Some(s) => preview_with(path, win, &s),
None => if let Some(ind) = mimetype.find('/') {
let supertype = &mimetype[..ind];
if supertype == "text" {
preview_text(path, win);
} else if let Some(s) = PREVIEW_T.mimetype.get(supertype) {
preview_with(path, win, &s);
}
},
}
}
*/
},
None => {}
/*
if let Some(mimetype) = tree_magic::from_filepath(&path) {
match PREVIEW_T.mimetype.get(mimetype.as_str()) {
Some(s) => preview_with(path, win, &s),
None => if let Some(ind) = mimetype.find('/') {
let supertype = &mimetype[..ind];
if supertype == "text" {
preview_text(path, win);
} else if let Some(s) = PREVIEW_T.mimetype.get(supertype) {
preview_with(path, win, &s);
}
},
}
}
*/
}
}
fn preview_with(path: &path::Path, win: &JoshutoPanel, entry: &JoshutoPreviewEntry) {
let mut command = process::Command::new(&entry.program);
command
.args(entry.args.as_ref().unwrap_or(&Vec::new()))
.arg(path.as_os_str())
.stdin(std::process::Stdio::piped())
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped());
match command.spawn() {
Ok(child) => {
if let Some(output) = child.stdout {
let reader = std::io::BufReader::new(output);
let mut i = 0;
for line in reader.lines() {
if let Ok(line) = line {
ncurses::mvwaddnstr(win.win, i, 0, &line, win.cols);
i += 1;
}
if i == win.rows {
break;
}
}
}
}
Err(e) => {
eprintln!("{:?}", e);
ui::wprint_err(win, e.to_string().as_str());
}
}
}
fn preview_text(path: &path::Path, win: &JoshutoPanel) {
match std::fs::File::open(path) {
Err(e) => ui::wprint_err(win, e.to_string().as_str()),
Ok(f) => {
let reader = std::io::BufReader::new(f);
for (i, line) in reader.lines().enumerate() {
if let Ok(line) = line {
ncurses::mvwaddstr(win.win, i as i32, 0, &line);
}
if i >= win.rows as usize {
break;
}
}
}
}
}
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