#!/usr/bin/env php
<?php
/**
 * CheckPkgist is a tool to check RPM update needed
 * using information from https://packagist.org/
 *
 * PHP version 5
 *
 * Copyright (C) 2014  Remi Collet
 * https://github.com/remicollet/remirepo/tree/master/tools/checkpkgist
 *
 * CheckPkgist is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FedoraClient is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * See <http://www.gnu.org/licenses/>
 *
 * @category  CheckPkgist
 * @package   FedoraClient
 *
 * @author    Remi Collet <remi@fedoraproject.org>
 * @copyright 2014 Remi Collet
 * @license   http://www.gnu.org/licenses/lgpl-2.1.txt LGPL License 2.1 or (at your option) any later version
 * @link      https://github.com/remicollet/remirepo/tree/master/tools/checkpkgist
 */

require_once 'Cache/Lite.php';

if (!ini_get('date.timezone')) {
     ini_set('date.timezone', 'Europe/Paris');
}

define ('VERSION', '1.0.0-dev');

class PkgClient {
	const URL = 'https://packagist.org/';
	protected $cache;

	function __construct () {
		$dir = "/tmp/pkgist-".posix_getlogin()."/";
		@mkdir($dir);
		$this->cache = new Cache_Lite(
			array(
				'memoryCaching'             => true,
				'cacheDir'                  => $dir,
				'automaticSerialization'    => true
			)
		);
	}

	function getPackage($name) {
		$url = self::URL . "p/$name.json";
		$rep = $this->cache->get(__METHOD__, $url);
		if (!$rep) {
			$rep = @file_get_contents($url);
			$this->cache->save($rep, __METHOD__, $url);
		}
		if ($rep) {
			$rep =json_decode($rep, true);
			if (isset($rep['packages'][$name])) {
				// Higher version first
				uksort($rep['packages'][$name], function($a, $b) { return version_compare($b, $a); });
			}
			return $rep;
		}
		return false;
	}
}

function getMax($name, $rpm) {
	static $vers = NULL;
	global $pkgs;

	if (is_null($vers)) {
		if ($vers = file_get_contents(__DIR__."/multiver.json")) {
			$vers = json_decode($vers, true, 5);
		} else {
			$vers = [];
		}
	}

	$rpms = array_keys($pkgs, $name);
	$crt  = 0;
	$max  = 9999;

	if (isset($vers[$rpm])) {
		$crt = $vers[$rpm];
		$max = $crt+1;

	} else if (preg_match('/[0-9]+$/', $rpm, $reg)) {
		// This already a versionned name
		$crt = intval($reg[0]);
		$max = $crt+1;
	}
	foreach($rpms as $alt) {
		if ($alt != $rpm && preg_match('/[0-9]+$/', $alt, $reg)) {
			$ver = intval($reg[0]);
			if ($ver>$crt && $ver<$max) {
				$max = $ver;
			}
		}
	}
	return $max;
}

function run($name, $rpm) {
	global $quiet, $verb, $client;

	$name = strtolower($name);
	$len = 50;
	$limit = getMax($name, $rpm);

	if (in_array($name, ['znerol/php-stringprep', 'psr/http-message-implementation'])) {
		return;
	}
	if (!strpos($name, '/')) {
		// e.g. ext-foo
		return;
	}
	list($owner, $library) = explode('/', $name, 2);
	if (in_array($owner, ['horde', 'kolab'])) {
		return;
	}

	if (!$quiet) {
		printf(" %-80s\r", $rpm);
	}

	$rpmver = exec("rpm -q --qf '%{VERSION}' $rpm", $out, $ret);
	if ($ret) {
		if ($quiet) {
			return;
		}
		$rpmver = "n/a";
	}
	$pkgs = $client->getPackage($name);
	if ($pkgs && isset($pkgs['packages'][$name])) {
		$maxver = "";
		$maxdat = false;
		$display = false;

		foreach ($pkgs['packages'][$name] as $pkver => $pkg) {
			if (preg_match('/^v[\.0-9]*$/', $pkver)) {
				$pkver = substr($pkver, 1);
			}
			if (strpos($pkver, 'dev') !== false) {
				continue;
			}
			$date = new DateTime($pkg['time']??'now');
			if (version_compare($pkver, $maxver, 'gt')) {
				$maxver = $pkver;
				$maxdat = $date;
			}
			if (version_compare($pkver, $limit, 'ge')) {
				continue;
			}
			if (version_compare($pkver, $rpmver, 'gt')) {
				$diff = $date->diff(new DateTime("now"));
				$rpm2 = $rpm;
				if ($diff->days <2) {
					$note = "(Just released)";
					$rpm2 = substr($rpm . ' ' . str_repeat('.', $len), 0, $len);
				} else if ($diff->days <20) {
					$note = $diff->format("(%a days)");
				} else {
					$note = "";
				}

				//print_r($pkg);
				printf(" %-{$len}s %15s %15s %15s %s\n", $rpm2, $rpmver, $pkver, $date->format("Y-m-d"), $note);
				if ($pkg['source']['type']=='git' && $verb) {
					printf("\tURL:  %s\n\tHash: %s\n",
						($pkg['source']['url']?:'unkown'),
						($pkg['source']['reference']?:'unkown'));
				}
				$display = true;
				if (!$verb) {
					break;
				}
			}
			else if (version_compare($pkver, $rpmver, 'eq') && $verb && !$display) {
				printf(" %-{$len}s %15s %15s %15s\n", $rpm, $rpmver, $pkver, $date->format("Y-m-d"));
				$display = true;
				if (!$verb) {
					break;
				}
			}
		}
		if ($verb && !$display) {
			printf(" %-{$len}s %15s %15s %15s\n", $rpm, $rpmver, ($maxver ?: 'unkown'), ($maxdat ? $date->format("Y-m-d") : ''));
		}
	} else {
		printf(" %-{$len}s %15s %15s\n", $rpm, $rpmver, 'Not found !');
	}
}

printf("\nCheckPkgist version %s by Remi Collet.\n\n", VERSION);

if (in_array('-h', $_SERVER['argv']) || in_array('--help', $_SERVER['argv'])) {
	echo <<<END
usage checkpkg [ options ]  [ name ... ]

    -h
    --help     Display help (this page)

    -v
    --verbose  Display all packages, with upsteam information

    -q
    --quiet    Don't display not installed packages
               or packages with latest version installed

    -s
    --sort     Sort output by package name
END;
	die("\n\n");
}

$sort   = (in_array('-s', $_SERVER['argv']) || in_array('--sort', $_SERVER['argv']));
$verb   = (in_array('-v', $_SERVER['argv']) || in_array('--verbose', $_SERVER['argv']));
$quiet  = (in_array('-q', $_SERVER['argv']) || in_array('--quiet', $_SERVER['argv']));
$client = new PkgClient();

$pkgs = file_get_contents(__DIR__."/rpmphp.json");
if (!$pkgs) {
	die("Missing configuration file rpmphp\n");
}
$pkgs = json_decode($pkgs, true, 5);
if (!$pkgs) {
	die("Bad configuration file rpmphp\n");
}
$pkg2 = file_get_contents(__DIR__."/checkpkgist.json");
if (!$pkg2) {
	die("Missing configuration file checkpkgist\n");
}
$pkg2 = json_decode($pkg2, true, 5);
if (!$pkg2) {
	die("Bad configuration file checkpkgist\n");
}

$change = false;
foreach ($pkg2 as $rpm => $pkg) {
	if (isset($pkgs[$rpm])) {
		unset($pkg2[$rpm]);
		$change = true;
	} else {
		$pkgs[$rpm] = $pkg2[$rpm];
	}
}
if ($change) {
	if (file_put_contents(__DIR__."/checkpkgist.json", json_encode($pkg2, JSON_PRETTY_PRINT))) {
		printf("Configuration file changes saved\n");
	}
}

if ($sort) {
	natcasesort($pkgs);
}
printf(" %-50s %15s %15s %15s\n", "Name", "Version", "Upstream", "Date");

$tmp = array();
for ($i=1 ; $i<$_SERVER['argc'] ; $i++) {
	if (is_dir($rpm = $_SERVER['argv'][$i])) {
		$rpm = basename(realpath($_SERVER['argv'][$i]));
	}
	if (isset($pkgs[$rpm])) {
		$tmp[$rpm] = $pkgs[$rpm];
	}
}
if (count($tmp)) {
	$verb = true;
	$scan = $tmp;
} else {
	$scan = $pkgs;
}
foreach ($scan as $rpm => $name) {
	run($name, $rpm);
}
echo str_repeat(' ', 80)."\n";