#!/usr/bin/env bash
#
# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: scripts/Check-Deps-1
# Copyright (C) 2004 - 2023 The T2 SDE Project
# Copyright (C) 1998 - 2003 ROCK Linux Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2.
# --- T2-COPYRIGHT-NOTE-END ---

gawk '
function check_package() {
	split(pkgline, a); dep=a[2];
	if (! index(a[2], stagelevel)) return;

	repository = a[4];
	package = a[5];

	present = present " " package " ";
	if (stagelevel < 2) return;

	depfile = depfile_tpl;
	gsub("<stagelevel>", stagelevel, depfile);
	gsub("<repository>", repository, depfile);
	gsub("<package>",    package,    depfile);

	firstent=1;
	gsub(" \\[.\\]:" repository "/" package ":[^ ]*", "", errors);
	while ((getline depline < depfile) > 0) {
		split(depline, a);
		if (a[1] != "[DEP]") continue;

		for (c=2; a[c] != ""; c++) {
			if (a[c] == package) continue;
			if (! index(present, " " a[c] " ")) {
				if (firstent)
					errors = errors " [" stagelevel "]:" \
					         repository "/" package ":";
				errors = errors ":" a[c];
				firstent=0;
			}
		}
	}

	close(depfile);
}

BEGIN {
	present="";
	errors="";

	system("mkdir -p src; scripts/Create-PkgList x86 > src/pkg_list");
	depfile_tpl = "package/<repository>/<package>/<package>.cache";

	for (stagelevel=0; stagelevel<9; stagelevel++) {
		while ((getline pkgline < "src/pkg_list") > 0) {
			check_package();
		}
		close("src/pkg_list");
	}
	system("rm -f src/pkg_list");

	if (errors != "") {
		print "\nThe following packages have dependencies which";
		print "are not solved before stage 9:\n";

		print "Stage Package                 Dependencies";

		gsub(" ", "\n", errors);
		gsub("::", "\t", errors);
		gsub(":", " ", errors);

		print errors | "expand -t30";
	}
}'