#!/usr/bin/php
<?php
/*
 Use this script to generate bundled provides, e.g.:
 ./composer.prov vendor/composer/installed.php

 Copyright (C) 2024-2025 Remi Collet <remi@fedoraproject.org>.

 SPDX-3.0-License-Identifier: GPL-2.0-or-later

 This program is free software.
 For more information on the license, see COPYING or
 <https://www.gnu.org/licenses/gpl-2.0.en.html>.
 For more information on free software, see
 <https://www.gnu.org/philosophy/free-sw.en.html>.
*/

// Check if composer "name" and "pretty_version" are usable in RPM
function isValid(Array $package, $strict=true) {
	// Only vendor/project
	if (!isset($package['name'])
		|| !strpos($package['name'], '/')
	) {
		return false;
	}
	// pretty_version is required
	if (!isset($package['pretty_version'])) {
		return false;
	}
	if ($strict) {
		// pretty_version is usable
		if (empty($package['pretty_version'])
			|| strpos($package['pretty_version'], '-')
		) {
			return false;
		}
	}
	return true;
}

// Clean "pretty_version"
function getVersion(Array $package) {
	return ltrim($package['pretty_version'], 'v');
}

// Parse an installed.php file
function run($file) {
	fputs(STDERR, "Search bundled libraries installed, parsing $file\n");
	$installed = include $file;
	$main = false;
	if (isValid($installed['root'], false)) {
		$main = $installed['root']['name'];
		if (isValid($installed['root'])) {
			printf("php-composer(%s) = %s\n", $main, getVersion($installed['root']));
		}
	}
	if (isset($installed['versions'])) foreach($installed['versions'] as $name => $v) {
		if ($name !== $main) {
			$v['name'] = $name;
			if (isValid($v)) {
				printf("bundled(php-composer(%s)) = %s\n", $name, getVersion($v));
			} else if (isValid($v, false)) {
				printf("bundled(php-composer(%s))\n", $name);
			}
		}
	}
}

// From command line argument, manual usage
if (isset($_SERVER['argv'][1])) {
	run($_SERVER['argv'][1]);

// From input lines, rpmbuild usage
} else while($f = fgets(STDIN)) {
	run(trim($f));
}