<?php

use Combodo\iTop\Application\WebPage\ErrorPage;
use Combodo\iTop\Application\WebPage\WebPage;

function DisplayStatus(WebPage $oPage)
{
	$oPage->set_title(Dict::S('iTopHub:Landing:Status'));

	$oPage->add('<table class="module-selection-banner"><tr>');
	$sBannerUrl = utils::GetAbsoluteUrlModulesRoot().'/itop-hub-connector/images/landing-extension.png';
	$oPage->add('<td><img style="max-height:72px; margin-right: 10px;" src="'.$sBannerUrl.'"/><td>');
	$oPage->add('<td><h2>'.Dict::S('iTopHub:LandingWelcome').'</h2><td>');
	$oPage->add('</tr></table>');

	$oPage->add('<div class="module-selection-body">');
	// Now scan the extensions and display a report of the extensions brought by the hub
	$sPath = utils::GetDataPath().'downloaded-extensions/';
	$aExtraDirs = [];
	if (is_dir($sPath)) {
		$aExtraDirs[] = $sPath; // Also read the extra downloaded-modules directory
	}
	$oExtensionsMap = iTopExtensionsMap::GetExtensionsMap(ITOP_DEFAULT_ENV, $aExtraDirs);
	$oExtensionsMap->LoadChoicesFromDatabase(MetaModel::GetConfig());

	foreach ($oExtensionsMap->GetAllExtensions() as $oExtension) {
		if ($oExtension->sSource == iTopExtension::SOURCE_REMOTE) {
			$aCSSClasses = ['landing-extension'];
			if ($oExtension->sInstalledVersion === '') {
				$aCSSClasses[] = 'landing-installation';
				$sInstallation = Dict::Format('iTopHub:InstallationStatus:Version_NotInstalled', $oExtension->sVersion);

			} else {
				$aCSSClasses[] = 'landing-no-change';
				$sBadge = '<span style="display:inline-block;font-size:8pt;padding:3px;border-radius:4px;color:#fff;background-color:#1c94c4;margin-left:0.5em;margin-right:0.5em">'.Dict::S('iTopHub:InstallationStatus:Installed').'</span>';
				$sInstallation = Dict::Format('iTopHub:InstallationStatus:Installed_Version', $sBadge, $oExtension->sInstalledVersion);
			}

			$oPage->add('<div class="choice">');
			$sCode = $oExtension->sCode;
			$sDir = basename($oExtension->sSourceDir);
			$oPage->add('<input type="checkbox" data-extension-code="'.$sCode.'" data-extension-dir="'.$sDir.'" checked disabled>&nbsp;');
			$oPage->add('<label><b>'.utils::EscapeHtml($oExtension->sLabel).'</b> '.$sInstallation.'</label>');
			$oPage->add('<div class="description">');
			$oPage->add('<p>');
			if ($oExtension->sDescription != '') {
				$oPage->add(utils::EscapeHtml($oExtension->sDescription).'</br>');
			}
			$oPage->add('</p>');
			$oPage->add('</div>');
			$oPage->add('</div>');
		}
	}
	$oPage->add('</div>');
	$oPage->add('<div style="text-align:center"><button onclick="window.location.href=\'./UI.php\';">'.Dict::S('iTopHub:GoBackToITopBtn').'</button></div>');
}

function DoLanding(WebPage $oPage)
{
	$oPage->LinkStylesheetFromModule('itop-hub-connector/css/hub.css');
	$oPage->add('<table class="module-selection-banner"><tr>');
	$sBannerUrl = utils::GetAbsoluteUrlModulesRoot().'/itop-hub-connector/images/landing-extension.png';
	$oPage->add('<td><img style="max-height:72px; margin-right: 10px;" src="'.$sBannerUrl.'"/><td>');
	$oPage->add('<td><h2>'.Dict::S('iTopHub:InstallationWelcome').'</h2><td>');
	$oPage->add('</tr></table>');

	$oPage->set_title(Dict::S('iTopHub:Landing:Status'));

	$oPage->add('<div class="module-selection-body" style="text-align: center; line-height: 14em;"><h2>'.Dict::S('iTopHub:Uncompressing').'</h2></div>');

	$sProduct = utils::ReadParam('applicationName', '', false, 'raw_data');
	$sVersion = utils::ReadParam('applicationVersion', '', false, 'raw_data');
	$sInstanceUUID = utils::ReadParam('uuidFile', '', false, 'raw_data');
	$sDatabaseUUID = utils::ReadParam('uuidBdd', '', false, 'raw_data');
	$aExtensions = utils::ReadParam('extensions', [], false, 'raw_data');

	// Basic consistency validation
	if ($sProduct != ITOP_APPLICATION) {
		throw new Exception("Inconsistent product '$sProduct', expecting '".ITOP_APPLICATION."'");
	}

	if ($sVersion != ITOP_VERSION) {
		throw new Exception("Inconsistent version '$sVersion', expecting ".ITOP_VERSION."'");
	}

	$sFileUUID = (string)trim(@file_get_contents(utils::GetDataPath()."instance.txt"), "{} \n");
	if ($sInstanceUUID != $sFileUUID) {
		throw new Exception("Inconsistent file UUID '$sInstanceUUID', expecting ".$sFileUUID."'");
	}

	$sDBUUID = (string)trim(DBProperty::GetProperty('database_uuid', ''), '{}');
	if ($sDatabaseUUID != $sDBUUID) {
		throw new Exception("Inconsistent database UUID '$sDatabaseUUID', expecting ".$sDBUUID."'");
	}

	// Uncompression of extensions in data/downloaded-extensions
	// only newly downloaded extensions reside in this folder
	$i = 0;
	$sPath = utils::GetDataPath().'downloaded-extensions/';
	if (!is_dir($sPath)) {
		if (!mkdir($sPath)) {
			throw new Exception("ERROR: Unable to create the directory '$sPath'. Cannot download any extension. Check the access rights on '".dirname('data/downloaded-extensions/')."'");
		}
	} else {
		// Make sure that the directory is empty
		SetupUtils::tidydir($sPath);
	}

	foreach ($aExtensions as $sBase64Archive) {
		$sArchive = base64_decode($sBase64Archive);

		$sZipArchiveFile = $sPath."/extension-{$i}.zip";
		file_put_contents($sZipArchiveFile, $sArchive);
		// Expand the content of extension-x.zip into  utils::GetDataPath().'downloaded-extensions/'
		// where the installation will load the extension automatically

		try {
			$oZip = utils::ZipArchiveOpen($sZipArchiveFile);
		} catch (\Exception $e) {
			throw new Exception('Unable to open "'.$sZipArchiveFile.'" for extraction. Make sure that the directory "'.'data/downloaded-extensions/'.'" is writable for the web server.');
		}
		for ($idx = 0; $idx < $oZip->numFiles; $idx++) {
			$sCompressedFile = $oZip->getNameIndex($idx);
			$oZip->extractTo($sPath, $sCompressedFile);
		}
		@$oZip->close();
		@unlink($sZipArchiveFile); // Get rid of the temporary file
		$i++;
	}

	// Now scan the extensions and display a report of the extensions brought by the hub
	$sNextPage = utils::GetAbsoluteUrlModulePage('itop-hub-connector', 'land.php', ['operation' => 'install']);
	$oPage->add_ready_script("window.location.href='$sNextPage'");

}

function DoInstall(WebPage $oPage)
{
	$sUID = hash('sha256', rand());
	file_put_contents(utils::GetDataPath().'hub/compile_authent', $sUID);

	$oPage->LinkStylesheetFromModule('itop-hub-connector/css/hub.css');
	$oPage->add('<table class="module-selection-banner"><tr>');
	$sBannerUrl = utils::GetAbsoluteUrlModulesRoot().'/itop-hub-connector/images/landing-extension.png';
	$oPage->add('<td><img style="max-height:72px; margin-right: 10px;" src="'.$sBannerUrl.'"/><td>');
	$oPage->add('<td><h2>'.Dict::S('iTopHub:InstallationWelcome').'</h2><td>');
	$oPage->add('</tr></table>');

	$oPage->set_title(Dict::S('iTopHub:Landing:Install'));
	$oPage->add('<div id="installation-summary" class="module-selection-body" style="position: relative">');

	// Now scan the extensions and display a report of the extensions brought by the hub
	// Now scan the extensions and display a report of the extensions brought by the hub
	$sPath = utils::GetDataPath().'downloaded-extensions/';
	$aExtraDirs = [];
	if (is_dir($sPath)) {
		$aExtraDirs[] = $sPath; // Also read the extra downloaded-modules directory
	}
	$oExtensionsMap = iTopExtensionsMap::GetExtensionsMap(ITOP_DEFAULT_ENV, $aExtraDirs);
	$oExtensionsMap->LoadChoicesFromDatabase(MetaModel::GetConfig());

	foreach ($oExtensionsMap->GetAllExtensions() as $oExtension) {
		if ($oExtension->sSource == iTopExtension::SOURCE_REMOTE) {
			if ($oExtension->HasDependencyIssue()) {
				$oPage->add('<div class="choice">');
				$oPage->add('<input type="checkbox" disabled>&nbsp;');
				$sTitle = Dict::Format('iTopHub:InstallationEffect:MissingDependencies_Details', implode(', ', $oExtension->aMissingDependencies));
				$oPage->add('<label><b>'.utils::EscapeHtml($oExtension->sLabel).'</b> <span style="color:red" title="'.$sTitle.'">'.Dict::S('iTopHub:InstallationEffect:MissingDependencies').'<span></label>');
				$oPage->add('<div class="description">');
				$oPage->add('<p>');
				if ($oExtension->sDescription != '') {
					$oPage->add(utils::EscapeHtml($oExtension->sDescription).'</br>');
				}
				$oPage->add('</p>');
				$oPage->add('</div>');
				$oPage->add('</div>');
			} else {
				$aCSSClasses = ['landing-extension'];
				if ($oExtension->sInstalledVersion === '') {
					$aCSSClasses[] = 'landing-installation';
					$sInstallation = Dict::Format('iTopHub:InstallationEffect:Install', $oExtension->sVersion);
				} elseif ($oExtension->sInstalledVersion == $oExtension->sVersion) {
					$aCSSClasses[] = 'landing-no-change';
					$sInstallation = Dict::Format('iTopHub:InstallationEffect:NoChange', $oExtension->sVersion);
				} elseif (version_compare($oExtension->sInstalledVersion, $oExtension->sVersion, '<')) {
					$aCSSClasses[] = 'landing-upgrade';
					$sInstallation = Dict::Format('iTopHub:InstallationEffect:Upgrade', $oExtension->sInstalledVersion, $oExtension->sVersion);
				} else {
					$aCSSClasses[] = 'landing-downgrade';
					$sInstallation = Dict::Format('iTopHub:InstallationEffect:Downgrade', $oExtension->sInstalledVersion, $oExtension->sVersion);
				}
				$oPage->add('<div class="choice">');
				$sCode = $oExtension->sCode;
				$sDir = basename($oExtension->sSourceDir);
				$oPage->add('<input type="checkbox" checked disabled data-extension-code="'.$sCode.'" data-extension-dir="'.$sDir.'">&nbsp;');
				$oPage->add('<label><b>'.utils::EscapeHtml($oExtension->sLabel).'</b> '.$sInstallation.'</label>');
				$oPage->add('<div class="description">');
				$oPage->add('<p>');
				if ($oExtension->sDescription != '') {
					$oPage->add(utils::EscapeHtml($oExtension->sDescription).'</br>');
				}
				$oPage->add('</p>');
				$oPage->add('</div>');
				$oPage->add('</div>');
			}
		}
	}

	$oPage->add('</div>');
	$oPage->add('<div id="hub-installation-feedback">');
	$oPage->add('<div id="hub-installation-progress-text">'.Dict::S('iTopHub:DatabaseBackupProgress').'</div>');
	$oPage->add('<div id="hub-installation-progress"></div>');

	$oPage->add('</div>'); // module-selection-body

	$oPage->LinkStylesheetFromAppRoot('css/font-awesome/css/all.min.css');

	$oPage->add('<div id="hub_installation_widget"></div>');
	$oPage->add('<fieldset id="database-backup-fieldset"><legend>'.Dict::S('iTopHub:DBBackupLabel').'</legend>');
	$oPage->add('<div id="backup_form"><input id="backup_checkbox" type="checkbox" checked><label for="backup_checkbox"> '.Dict::S('iTopHub:DBBackupSentence').'</label></div>');
	$oPage->add('<div id="backup_status"></div>');
	$oPage->add('</fieldset>');
	$oPage->add('<p style="text-align: center"><input type="button" id="hub_start_installation" type="button" disabled value="'.Dict::S('iTopHub:DeployBtn').'"/></p>');

	$sIframeUrl = utils::GetAbsoluteUrlModulePage('itop-hub-connector', 'launch.php', ['target' => 'inform_after_setup']);
	$sStatusPageUrl = utils::GetAbsoluteUrlModulePage('itop-hub-connector', 'land.php', ['operation' => 'done']);

	$aWidgetParams = [
		'self_url' => utils::GetAbsoluteUrlModulePage('itop-hub-connector', 'ajax.php', ['maintenance' => true]),
		'iframe_url' => $sIframeUrl,
		'redirect_after_completion_url' => $sStatusPageUrl,
		'mysql_bindir' => MetaModel::GetConfig()->GetModuleSetting('itop-backup', 'mysql_bindir', ''),
		'labels' => [
			'database_backup' => Dict::S('iTopHub:InstallationProgress:DatabaseBackup'),
			'extensions_installation' => Dict::S('iTopHub:InstallationProgress:ExtensionsInstallation'),
			'installation_successful' => Dict::S('iTopHub:InstallationProgress:InstallationSuccessful'),
			'rollback' => Dict::S('iTopHub:ConfigurationSafelyReverted'),
		],
		'authent' => $sUID,
	];

	$sWidgetParams = json_encode($aWidgetParams);

	$oPage->add_ready_script("$('#hub_installation_widget').hub_installation($sWidgetParams);");
	$oPage->add_ready_script("$('#hub_start_installation').on('click', function() { $('#hub_installation_widget').hub_installation('start_installation');} );");
	$oPage->add_ready_script("$('#hub_installation_widget').hub_installation('check_before_backup');");
	$oPage->add('<div id="debug"></div>');
}

try {
	require_once(APPROOT.'/application/application.inc.php');
	require_once(APPROOT.'/setup/setuppage.class.inc.php');
	require_once(APPROOT.'/setup/extensionsmap.class.inc.php');
	require_once(APPROOT.'/application/startup.inc.php');
	require_once(APPROOT.'/application/loginwebpage.class.inc.php');

	LoginWebPage::DoLoginEx(null, true /* $bMustBeAdmin */); // Check user rights and prompt if needed
	if (MetaModel::GetConfig()->Get('demo_mode')) {
		throw new Exception('Sorry the installation of extensions is not allowed in demo mode');
	}

	$oPage = new SetupPage(''); // Title will be set later, depending on $sOperation
	$oPage->LinkScriptFromModule('itop-hub-connector/js/hub.js');
	$oPage->LinkStylesheetFromAppRoot('css/font-combodo/font-combodo.css');

	$oPage->add_style(
		<<<CSS
div.choice { margin: 0.5em;}
div.choice a { text-decoration:none; font-weight: bold; color: #1C94C4 }
div.description { margin-left: 2em; }
div.description p { margin-top: 0.25em; margin-bottom: 0.5em; }
.choice-disabled { color: #999; }
CSS
	);

	$sOperation = utils::ReadParam('operation', 'land');

	switch ($sOperation) {
		case 'done':
			DisplayStatus($oPage);
			break;

		case 'install':
			if (!file_exists(utils::GetDataPath().'hub')) {
				mkdir(utils::GetDataPath().'hub');
			}
			DoInstall($oPage);
			break;

		case 'land':
		default:
			DoLanding($oPage);
	}

	$oPage->output();
} catch (Exception $e) {
	require_once(APPROOT.'/setup/setuppage.class.inc.php');
	$oP = new ErrorPage(Dict::S('UI:PageTitle:FatalError'));
	$oP->add("<h1>".Dict::S('UI:FatalErrorMessage')."</h1>\n");
	$oP->error(Dict::Format('UI:Error_Details', $e->getMessage()));
	$oP->output();

	if (MetaModel::IsLogEnabledIssue()) {
		if (MetaModel::IsValidClass('EventIssue')) {
			$oLog = new EventIssue();

			$oLog->Set('message', $e->getMessage());
			$oLog->Set('userinfo', '');
			$oLog->Set('issue', 'PHP Exception');
			$oLog->Set('impact', 'Page could not be displayed');
			$oLog->Set('callstack', $e->getTrace());
			$oLog->Set('data', []);
			$oLog->DBInsertNoReload();
		}

		IssueLog::Error($e->getMessage());
	}
}
