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// Created by Jacob Hrbek <kreyren@rixotstudio.cz> in 2020 under license GPL-3 (https://www.gnu.org/licenses/gpl-3.0.en.html)

/*
	Sanitized method to handle creation of directories cross-platform

	Currently in development
*/

use std::fs::metadata;
use die::die;
use cplogger::fixme;
use cplogger::trace;

// Sanitized method to make a new directory
pub fn emkdir<PATH: AsRef<std::path::Path>>(pathname: PATH) {
	// FIXME: Verify that parsed argument is valid
	// FIXME-TEST: Make sure that this works on Linux
	// FIXME-TEST: Make sure that this works on Windows
	// FIXME-TEST: Make sure that this works on Redox
	// FIXME-TEST: Make sure that this works on MacOS
	// FIXME-TEST: Make sure that this works on FreeBSD
	// FIXME: Implement permission management for new directory
	fixme!("die() doesn't accept pathname println-way, using some/path as stub");
	if !metadata(pathname.as_ref()).unwrap().is_dir() {
		match std::fs::create_dir(pathname.as_ref()) {
		Ok(..) => { trace!("Created a new directory in some/path"); },
		Err(ref error) if error.kind() == std::io::ErrorKind::AlreadyExists => {
			// For scenerio where pathname was parsed after sanity checks and prior to create_dir() call
			if metadata(pathname.as_ref()).unwrap().is_file() {
			die!(1; "Pathname some/path points to a file, created after sanity checks and prior to create_dir() call, suspecting malicous injection");
			} else if metadata(pathname.as_ref()).unwrap().is_dir() {
			die!(1; "Pathname some/path points to already existing directory, created after sanity checks and prior to create_dir() call suspecting malicious injection");
			} else if false { // FIXME: Check for symlink
			die!(1; "Pathname some/path points to already existing symlink, created after sanity checks and prior to create_dir() call, suspecting malicious injection");
			} else {
			die!(256; "Unexpected happend for creation of some/path after sanity checks and prior to create_dir() call");
			}
		},
		Err(_error) => { die!(256; "Unexpected happend while creating a directory some/path"); }
		}
	} else if metadata(pathname.as_ref()).unwrap().is_dir() {
		trace!("Directory some/path already exists no need to create it");
	} else if metadata(pathname.as_ref()).unwrap().is_file() {
		// FIXME: die!(1; "Path {} is already a file which is unexpected", pathname);
		die!(1; "Path somepath is already a file which is unexpected");
	} else if false { // FIXME: Implement checking for symlink
		die!(1; "Path some/path is a symlink which is unexpected for creating a directory");
	} else {
		die!(256; "Unexpected happend while creating a new directory in some/path");
	}
}