use std::path::Path;

use pico_args::Arguments;

const DRIVE: &str = "/mnt/c/";

const HELP:		[&str;2]	= [ "-h", "--help" ];
const QUOTED:	[&str;2]	= [ "-q", "--quotes" ];

pub fn main() {
	let mut args = Arguments::from_env();

	//	handle help flag
	if args.contains(HELP) {
		help_text();
		return;
	}

	//	handle quote flag
	let quotes: &str =
	if args.contains(QUOTED) {
		if args.contains(QUOTED) { "\"" }	//	-qq	-> "..."	(output with double quotes)
		else { "'" }						//	-q	-> '...'	(output with single quotes)
	} else { "" };							//	_	-> ...		(output with no quotes)

	loop {
		let next = args.subcommand().unwrap();
		if let Some(arg) = next {
			let mut output: String;
			//	canonicalize; windows doesn't recognize symlinks
			let path = Path::new(&arg).canonicalize();
			if let Ok(target) = path {
				output = target.to_string_lossy().to_string();
			} else {
				output = arg;
			}

			//	simple C-drive substitution
			if output.starts_with(DRIVE) {
				output = output.replace(DRIVE, "C:\\");
			}

			//	switch out separators
			output = output.replace("/", "\\");

			//	emit to stdout
			println!("{quotes}{output}{quotes}");
		} else {
			break;
		}
	}

}

pub fn help_text() {
	println!("path-convert v{}
Valerie Wolfe <sleeplessval@gmail.com>
Canonicalize and convert Unix paths for DOS programs.

usage: path-convert [flags] <paths...>

args:
	<paths...>     one or more paths to convert

flags:
	-h, --help     show this help text
	-q, --quotes   surround the output strings with quotes (-qq for double quotes)
", env!("CARGO_PKG_VERSION"));
}