use fmt;
use io;

use gpt;
use volume;

fn booltonum(a: bool) str = if (a) { return "1"; } else { return "0"; };

export fn info(vol: str, args: []str) void = {
	const name = vol;
	const vol = volume::opengpt(vol);
	defer gpt::finish(vol);

	const header = vol.primary.header;

	fmt::printfln("# GPT header info {}", name)!;
	fmt::printfln("revision({})", header.revision)!;
	fmt::printfln("header_size({})", header.header_size)!;
	fmt::printfln("header_crc32({})", header.header_crc32)!;
	fmt::printfln("header_lba({})", header.header_lba)!;
	fmt::printfln("backup_header_lba({})", header.backup_header_lba)!;
	fmt::printfln("first_lba({})", header.first_lba)!;
	fmt::printfln("last_lba({})", header.last_lba)!;
	// XXX Add a comment output for the GUID written in normal form
	fmt::printfln("disk_guid([{},{}])", header.disk_guid[0], header.disk_guid[1])!;
	fmt::printfln("entries_lba({})", header.entries_lba)!;
	fmt::printfln("entries_len({})", header.entries_len)!;
	fmt::printfln("entry_size({})", header.entry_size)!;
	fmt::printfln("entries_crc32({})", header.entries_crc32)!;
	
	const primary_sane = gpt::header_crc32(header) == header.header_crc32 && gpt::entries_crc32(vol.primary.entries) == header.entries_crc32;
	const backup_sane = gpt::header_crc32(vol.backup.header) == vol.backup.header.header_crc32 && gpt::entries_crc32(vol.backup.entries) == vol.backup.header.entries_crc32;

	fmt::printfln("primary_sane({})", booltonum(primary_sane))!;
	fmt::printfln("backup_sane({})", booltonum(backup_sane))!;
};