<?php
/*
 * This file is part of MedShakeEHR.
 *
 * Copyright (c) 2017
 * fr33z00 <https://www.github.com/fr33z00>
 * http://www.medshake.net
 *
 * MedShakeEHR is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * MedShakeEHR 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MedShakeEHR.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * Installateur web de base
 *
 * @author fr33z00 <https://www.github.com/fr33z00>
 * @contrib Bertrand Boutillier <b.boutillier@gmail.com>
 * @contrib Michaël Val
 */

ini_set('display_errors', 1);
setlocale(LC_ALL, "fr_FR.UTF-8");

function command_exist($cmd)
{
	$return = shell_exec(sprintf("which %s", escapeshellarg($cmd)));
	return !empty($return);
}

function apacheModule_exist($moduleName)
{
	if (in_array($moduleName, apache_get_modules()) or strpos(shell_exec('/usr/local/apache/bin/apachectl -l'), $moduleName) !== false) {
		return true;
	} else {
		return false;
	}
}

$template = '';

$dossierweb = getcwd();

if ($_SERVER['REQUEST_METHOD'] == 'GET') {

	$errors_base = [];
	if (!is_writable($dossierweb)) {
		$errors_base[] = $dossierweb . " n'est pas accessible en écriture.";
	}
	if (!command_exist('git')) {
		$errors_base[] = "Git ne semble pas installé.";
	}
	if (!apacheModule_exist('mod_rewrite')) {
		$errors_base[] = "Le module Apache mod_rewrite ne semble pas installé.";
	}

	$modulesPHP = get_loaded_extensions();
	$modulesPHPrequis = ['gd', 'intl', 'curl', 'zip', 'xml', 'imagick', 'imap', 'dom', 'gnupg', 'yaml', 'soap', 'bcmath'];
	sort($modulesPHPrequis);
	foreach ($modulesPHPrequis as $mod) {
		if (!in_array($mod, $modulesPHP)) {
			$errors_base[] = "Le module PHP " . $mod . " ne semble pas installé.";
		}
	}

	if (empty($errors_base)) {
		$template = 'bienvenue';
	} else {
		$template = 'erreurs-prerequis';
	}
} elseif ($_SERVER['REQUEST_METHOD'] == 'POST') {

	$dossier = $_POST['destination'];
	if (!is_dir($_POST['destination'])) {
		mkdir($_POST['destination'], 0774, true);
	}
	if (!is_dir($_POST['destination']) or !is_writable($_POST['destination'])) {
		$template = 'erreur-droits';
	} else {
		file_put_contents("MEDSHAKEEHRPATH", $_POST['destination']);
		$dossier .= ($dossier[strlen($dossier) - 1]) != '/' ? '/' : '';

		if (!isset($_POST['v'])) {
			//récupération de la dernière version release
			$ch = curl_init("https://api.github.com/repos/medshake/MedShakeEHR-base/releases/latest");
			curl_setopt($ch, CURLOPT_USERAGENT, "linux");
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			$res = json_decode(curl_exec($ch), true);
			curl_close($ch);
			$releaseTagName = $res['tag_name'];
		} else {
			$releaseTagName = $_POST['v'];
		}
		//téléchargement de la dernière release
		file_put_contents("/tmp/medshake.zip", fopen('https://github.com/medshake/MedShakeEHR-base/archive/' . $releaseTagName . '.zip', 'r'));
		$zip = new ZipArchive;
		if ($zip->open("/tmp/medshake.zip")) {
			$zip->extractTo('/tmp/');
			unlink("/tmp/medshake.zip");
			//deplacement du contenu de public_html
			$dossierdezip = '/tmp/MedShakeEHR-base-' . $releaseTagName;
			if (!is_dir($dossierdezip)) {
				$dossierdezip = '/tmp/MedShakeEHR-base-' . str_replace('v', '', $releaseTagName);
			}
			foreach (scandir($dossierdezip . '/public_html') as $f) {
				if ($f != '.' and $f != '..') {
					exec('mv ' . $dossierdezip . '/public_html/' . $f . ' ' . $dossierweb . '/' . $f);
				}
			}
			rmdir($dossierdezip . '/public_html');
			//deplacement du reste vers la destination
			foreach (scandir($dossierdezip) as $f) {
				if ($f != '.' and $f != '..') {
					exec('mv ' . $dossierdezip . '/' . $f . ' ' . $dossier . $f);
				}
			}
			chdir($dossier);
			//telechargement de composer
			file_put_contents("composer.phar", fopen("https://getcomposer.org/download/latest-stable/composer.phar", 'r'));
			chmod("composer.phar", 0774);
			exec('COMPOSER_HOME="/tmp/" php ./composer.phar install 2>&1', $ret);
			json_encode($ret);
			//exécution de composer pour la partie JS
			chdir($dossierweb);
			exec('COMPOSER_HOME="/tmp/" php ' . $dossier . 'composer.phar install 2>&1', $ret);
			//Vérifie l'absence d'erreur dans le log Composer
			$errormatches = array_filter($ret, function ($haystack) {
				if (strpos(strtolower($haystack), 'error') === false) {
					return false;
				} else {
					return true;
				}
			});
			if (empty($errormatches)) {
				unlink($dossierweb . '/self-installer.php');
				$htaccess = "SetEnv MEDSHAKEEHRPATH " . $dossier . "\n";
				$htaccess .= file_get_contents($dossierweb . "/.htaccess");
				file_put_contents($dossierweb . "/.htaccess", $htaccess);
				//lancement de la partie configuration
				header('Location: ' . $_SERVER['SERVER_NAME'] . "/install.php");
				die();
			} else {
				$ret = explode('<br>', $ret);
				$template = 'erreur-inconnue';
			}
		} else {
			$ret = "Impossible de dezipper le fichier /tmp/medshake.zip";
			$template = 'erreur-inconnue';
		}
	}
}

if ($template != '') : ?>
	<!DOCTYPE html>
	<html lang="fr">

	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css" integrity="sha384-xOolHFLEh07PJGoPkLv1IbcEPTNtaed2xpHsD9ESMhqIYd0nLMwNLD69Npy4HI+N" crossorigin="anonymous">

		<title>
			MedShakeEHR : Pre-installation</title>
		<meta name="Description" content="" />
	</head>
	<style>
		.btn {
			color: #fff;
			background-color: #286090;
			border-color: #204d74;
			padding: 6px 12px;
			cursor: pointer
		}

		.mysvg {
			width: 64px;
			height: 64px
		}

		.svgcontainer {
			width: 64px;
			height: 64px;
			display: none;
			position: absolute;
			left: 170px;
			top: 240px
		}

		.svganim {
			display: block !important;
			animation: shake 10s normal 1s infinite
		}

		@keyframes shake {
			from {
				margin-left: 0
			}

			0.2% {
				margin-left: -2px
			}

			0.6% {
				margin-left: 4px
			}

			1% {
				margin-left: -6px
			}

			1.4% {
				margin-left: 6px
			}

			1.8% {
				margin-left: -4px
			}

			2.1% {
				margin-left: 2px
			}

			2.4% {
				margin-left: 0
			}

			20% {
				margin-left: 0
			}

			20.2% {
				margin-left: -2px
			}

			20.6% {
				margin-left: 4px
			}

			21% {
				margin-left: -6px
			}

			21.4% {
				margin-left: 6px
			}

			21.8% {
				margin-left: -4px
			}

			22.1% {
				margin-left: 2px
			}

			22.4% {
				margin-left: 0
			}

			40% {
				margin-left: 0
			}

			40.2% {
				margin-left: -2px
			}

			40.6% {
				margin-left: 4px
			}

			41% {
				margin-left: -6px
			}

			41.4% {
				margin-left: 6px
			}

			41.8% {
				margin-left: -4px
			}

			42.1% {
				margin-left: 2px
			}

			42.4% {
				margin-left: 0
			}

			60% {
				margin-left: 0
			}

			60.2% {
				margin-left: -2px
			}

			60.6% {
				margin-left: 4px
			}

			61% {
				margin-left: -6px
			}

			61.4% {
				margin-left: 6px
			}

			61.8% {
				margin-left: -4px
			}

			62.1% {
				margin-left: 2px
			}

			62.4% {
				margin-left: 0
			}

			80% {
				transform: rotate(0deg)
			}

			85% {
				transform: rotate(360deg)
			}

			to {
				transform: rotate(360deg)
			}
		}
	</style>
	<script>
		window.addEventListener("beforeclose", function() {
			alert("Si vous quittez cette page, l'installation ne sera pas fonctionnelle!");
		}, false);
	</script>

	<body>
		<nav class="navbar navbar-dark bg-dark mb-3">
			<a class="navbar-brand" href="#">MedShakeEHR</a>
		</nav>

		<div class="container-fluid" role="main">

			<?php
			if ($template == 'erreurs-prerequis') :
			?>
				<h1>Installateur de MedShakeEHR</h1>
				<div class="alert alert-danger" role="alert">
					<h4 class="alert-heading">Alerte prérequis !</h4>
					<p>
						Consultez les informations ci-dessous et rechargez cette page une fois que vous pensez le ou les problèmes corrigés.
					</p>
					<ul>
						<li><?php echo implode("</li><li>", $errors_base) ?></li>
					</ul>

				</div>

			<?php
			elseif ($template == 'bienvenue') :
			?>
				<h1>Installateur de MedShakeEHR</h1>
				<div id="inst">
					<p>Nous allons commencer la procédure d'installation. Cela peut prendre plusieurs minutes.<br>
						<strong>Ne fermez pas cette page, et ne la rechargez pas non plus!</strong>
					</p>
					<p>Définissez ci-dessous le dossier où MedShakeEHR doit être installé.<br>
						<strong> - Cet emplacement ne doit pas être accessible via le web</strong><br>
						<strong> - L'utilisateur www-data doit avoir les droits d'écriture sur cet emplacement, ainsi que sur le dossier <code><?= getcwd() ?></code>.
					</p>
					<form action="<?= $_SERVER['REQUEST_URI'] ?>" method="post" class="form-inline">
						<input name="bienvenue" type="hidden" />
						<?php if (isset($_GET['v'])) { ?><input name="v" type="hidden" value="<?= $_GET['v'] ?>" /> <?php } ?>
						<input id="dest" class="form-control mr-2" name="destination" type="text" value="<?= dirname(getcwd()) ?>" />
						<button type="submit" class="btn btn-light" onclick="document.querySelector('#inst').style.display='none';document.querySelector('.svgcontainer').className+=' svganim';">Suivant</button>
					</form>
				</div>
				<div class="svgcontainer">
					<svg class="mysvg" id="Capa_1" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 385.34484 385.34484" height="612" width="612" version="1.1" y="0px" x="0px" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
						<g>
							<flowRoot id="flowRoot3033" style="word-spacing:0px;letter-spacing:0px" line-height="125%" xml:space="preserve" font-size="40px" transform="translate(0 62.965)" font-family="Sans" fill="#ffffff">
								<flowRegion id="flowRegion3035">
									<rect id="rect3037" height="184.41" width="143.19" y="229.97" x="162.71" fill="#fff" />
								</flowRegion>
								<flowPara id="flowPara3039" />
							</flowRoot>
							<path id="path3050" d="m124.97 205.15s-11.284-37.253 10.49-59.026c28.553-25.332 47.126 25.029 59.648 13.768 18.471-9.6488 32.343-31.696 53.192-13.768 34.416 41.678-0.80691 92.11-0.80691 92.11s-7.7238 18.106-40.116 0.26897c-13.505-7.4365 19.388-40.477 4.945-45.87-7.3838-2.7571-12.18 11.011-20.062 11.011-7.8817 0-12.298-11.486-19.682-8.7291-14.443 5.3929 14.705 32.686 3.8038 43.587-9.6456 9.6456-37.043 11.592-40.654-1.8828" fill="#337ab7" />
							<g id="g3895" fill="#337ab7" transform="translate(31.526 31.438)">
								<g id="g3891">
									<path id="path7" d="m66.945 51.904c6.903 0 12.5-5.597 12.5-12.5s-5.597-12.5-12.5-12.5c-36.914 0-66.945 30.031-66.945 66.945 0 6.903 5.596 12.5 12.5 12.5 6.903 0 12.5-5.597 12.5-12.5 0-23.129 18.816-41.945 41.945-41.945z" />
									<path id="path9" d="m93.675 77.907c0-6.903-5.597-12.5-12.5-12.5-23.529 0-42.672 19.142-42.672 42.671 0 6.903 5.597 12.5 12.5 12.5s12.5-5.597 12.5-12.5c0-9.744 7.928-17.671 17.672-17.671 6.903 0 12.5-5.597 12.5-12.5z" />
								</g>
								<g id="g3875">
									<path id="path11" d="m309.88 216.03c-6.903 0-12.5 5.597-12.5 12.5 0 23.129-18.816 41.945-41.945 41.945-6.903 0-12.5 5.597-12.5 12.5s5.597 12.5 12.5 12.5c36.914 0 66.945-30.031 66.945-66.945 0-6.904-5.597-12.5-12.5-12.5z" />
									<path id="path13" d="m283.88 214.3c0-6.903-5.597-12.5-12.5-12.5s-12.5 5.597-12.5 12.5c0 9.744-7.927 17.671-17.671 17.671-6.903 0-12.5 5.597-12.5 12.5s5.597 12.5 12.5 12.5c23.529 0 42.671-19.141 42.671-42.671z" />
								</g>
								<g id="g3879" transform="matrix(-.088334 -.99609 .99609 -.088334 50.573 368.48)">
									<path id="path3881" d="m309.88 216.03c-6.903 0-12.5 5.597-12.5 12.5 0 23.129-18.816 41.945-41.945 41.945-6.903 0-12.5 5.597-12.5 12.5s5.597 12.5 12.5 12.5c36.914 0 66.945-30.031 66.945-66.945 0-6.904-5.597-12.5-12.5-12.5z" />
									<path id="path3883" d="m283.88 214.3c0-6.903-5.597-12.5-12.5-12.5s-12.5 5.597-12.5 12.5c0 9.744-7.927 17.671-17.671 17.671-6.903 0-12.5 5.597-12.5 12.5s5.597 12.5 12.5 12.5c23.529 0 42.671-19.141 42.671-42.671z" />
								</g>
								<g id="g3885" transform="matrix(.22191 .97507 -.97507 .22191 237.57 -71.256)">
									<path id="path3887" d="m309.88 216.03c-6.903 0-12.5 5.597-12.5 12.5 0 23.129-18.816 41.945-41.945 41.945-6.903 0-12.5 5.597-12.5 12.5s5.597 12.5 12.5 12.5c36.914 0 66.945-30.031 66.945-66.945 0-6.904-5.597-12.5-12.5-12.5z" />
									<path id="path3889" d="m283.88 214.3c0-6.903-5.597-12.5-12.5-12.5s-12.5 5.597-12.5 12.5c0 9.744-7.927 17.671-17.671 17.671-6.903 0-12.5 5.597-12.5 12.5s5.597 12.5 12.5 12.5c23.529 0 42.671-19.141 42.671-42.671z" />
								</g>
							</g>
						</g>
					</svg>
				</div>
			<?php
			elseif ($template == 'erreur-droits') :
			?>
				<h1>Erreur!</h1>
				<p style="margin-top:50px;">Le dossier <?= $dossier ?> n'est pas accessible en écriture. Veuillez corriger le problème puis cliquez sur suivant.</p>
				<a href=<?= $_SERVER['REQUEST_URI'] ?>><button class="btn btn-light">Suivant</button></a>
			<?php
			elseif ($template == 'erreur-inconnue') :
			?>
				<h1>Erreur!</h1>
				<p style="margin-top:50px;">Une erreur s'est produite durant l'installation. Voici les messages :</p>
				<p><?= $ret ?></p>

			<?php
			endif;
			?>
		</div>
	</body>

	</html>
<?php
endif;

?>