use pom_parser::Configuration;
use std::process::ExitCode;

fn try_main() -> Result<(), Box<dyn std::error::Error>> {
	// Try editing examples/conf.pom and see how the output changes!
	let conf = Configuration::load_path("examples/conf.pom")?;
	// get looks up a key in a configuration file.
	// it returns Some(value) if the key is set to value,
	// and None otherwise.
	println!(
		"indenting with {}",
		conf.get("indentation-type")
			.ok_or("you must pick an indentation-type!")?
	);
	// get_int_or_default parses a key as an integer.
	// It returns an Err if the key is set to something that’s not a valid integer.
	println!("tab width is {}", conf.get_int_or_default("tab-size", 8)?);
	// get_bool_or_default parses a key as a boolean.
	// no, off, false all count as false, and yes, on, true count as true.
	println!(
		"show line numbers: {}",
		conf.get_bool_or_default("show-line-numbers", false)?
	);
	// lists are comma-separated. they can use \, to escape literal commas.
	println!("C++ extensions: {:?}", conf.get_list("file-extensions.Cpp"));

	println!("===plug-ins===");
	// extract out a section of a configuration
	let plug_ins = conf.section("plug-in");
	for plug_in in plug_ins.keys() {
		// extract out just this plug-in's section
		let plug_in_cfg = plug_ins.section(plug_in);
		println!(
			"{plug_in} is {}",
			if plug_in_cfg.get_bool_or_default("enabled", true)? {
				"enabled"
			} else {
				"disabled"
			}
		);
		println!(
			"{plug_in} plug-in path: {:?}",
			plug_in_cfg
				.get("path")
				.ok_or_else(|| format!("no path set for plug-in {plug_in}!"))?
		);
	}
	Ok(())
}

fn main() -> ExitCode {
	if let Err(e) = try_main() {
		eprintln!("Error: {e}");
		return ExitCode::FAILURE;
	}
	ExitCode::SUCCESS
}