<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2005 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Installer\Adapter;

use Joomla\CMS\Application\ApplicationHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Installer\Installer;
use Joomla\CMS\Installer\InstallerAdapter;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Log\Log;
use Joomla\CMS\Table\Table;
use Joomla\CMS\Table\Update;
use Joomla\Database\ParameterType;

/**
 * Template installer
 *
 * @since  3.1
 */
class TemplateAdapter extends InstallerAdapter
{
    /**
     * The install client ID
     *
     * @var    integer
     * @since  3.4
     */
    protected $clientId;

    /**
     * Method to check if the extension is already present in the database
     *
     * @return  void
     *
     * @since   3.4
     * @throws  \RuntimeException
     */
    protected function checkExistingExtension()
    {
        try {
            $this->currentExtensionId = $this->extension->find(
                array(
                    'element'   => $this->element,
                    'type'      => $this->type,
                    'client_id' => $this->clientId,
                )
            );
        } catch (\RuntimeException $e) {
            // Install failed, roll back changes
            throw new \RuntimeException(
                Text::sprintf(
                    'JLIB_INSTALLER_ABORT_ROLLBACK',
                    Text::_('JLIB_INSTALLER_' . $this->route),
                    $e->getMessage()
                ),
                $e->getCode(),
                $e
            );
        }
    }

    /**
     * Method to copy the extension's base files from the `<files>` tag(s) and the manifest file
     *
     * @return  void
     *
     * @since   3.4
     * @throws  \RuntimeException
     */
    protected function copyBaseFiles()
    {
        // Copy all the necessary files
        if ($this->parent->parseFiles($this->getManifest()->files, -1) === false) {
            throw new \RuntimeException(
                Text::sprintf(
                    'JLIB_INSTALLER_ABORT_TPL_INSTALL_COPY_FILES',
                    'files'
                )
            );
        }

        if ($this->parent->parseFiles($this->getManifest()->images, -1) === false) {
            throw new \RuntimeException(
                Text::sprintf(
                    'JLIB_INSTALLER_ABORT_TPL_INSTALL_COPY_FILES',
                    'images'
                )
            );
        }

        if ($this->parent->parseFiles($this->getManifest()->css, -1) === false) {
            throw new \RuntimeException(
                Text::sprintf(
                    'JLIB_INSTALLER_ABORT_TPL_INSTALL_COPY_FILES',
                    'css'
                )
            );
        }

        // If there is a manifest script, let's copy it.
        if ($this->manifest_script) {
            $path['src']  = $this->parent->getPath('source') . '/' . $this->manifest_script;
            $path['dest'] = $this->parent->getPath('extension_root') . '/' . $this->manifest_script;

            if ($this->parent->isOverwrite() || !file_exists($path['dest'])) {
                if (!$this->parent->copyFiles(array($path))) {
                    throw new \RuntimeException(
                        Text::sprintf(
                            'JLIB_INSTALLER_ABORT_MANIFEST',
                            Text::_('JLIB_INSTALLER_' . strtoupper($this->getRoute()))
                        )
                    );
                }
            }
        }
    }

    /**
     * Method to finalise the installation processing
     *
     * @return  void
     *
     * @since   3.1
     * @throws  \RuntimeException
     */
    protected function finaliseInstall()
    {
        // Clobber any possible pending updates
        /** @var Update $update */
        $update = Table::getInstance('update');

        $uid = $update->find(
            array(
                'element'   => $this->element,
                'type'      => $this->type,
                'client_id' => $this->clientId,
            )
        );

        if ($uid) {
            $update->delete($uid);
        }

        // Lastly, we will copy the manifest file to its appropriate place.
        if ($this->route !== 'discover_install') {
            if (!$this->parent->copyManifest(-1)) {
                // Install failed, rollback changes
                throw new \RuntimeException(
                    Text::sprintf(
                        'JLIB_INSTALLER_ABORT_COPY_SETUP',
                        Text::_('JLIB_INSTALLER_' . strtoupper($this->route))
                    )
                );
            }
        }
    }

    /**
     * Method to finalise the uninstallation processing
     *
     * @return  boolean
     *
     * @since   4.0.0
     * @throws  \RuntimeException
     */
    protected function finaliseUninstall(): bool
    {
        $db    = $this->getDatabase();
        $query = $db->getQuery(true);

        $element     = $this->extension->element;
        $clientId    = $this->extension->client_id;
        $extensionId = $this->extension->extension_id;

        // Set menu that assigned to the template back to default template
        $subQuery = $db->getQuery(true)
            ->select($db->quoteName('s.id'))
            ->from($db->quoteName('#__template_styles', 's'))
            ->where(
                [
                    $db->quoteName('s.template') . ' = :element',
                    $db->quoteName('s.client_id') . ' = :clientId',
                ]
            );

        $query->bind(':element', $element)
            ->bind(':clientId', $clientId, ParameterType::INTEGER);

        $query->update($db->quoteName('#__menu'))
            ->set($db->quoteName('template_style_id') . ' = 0')
            ->where($db->quoteName('template_style_id') . ' IN (' . (string) $subQuery . ')');

        $db->setQuery($query);
        $db->execute();

        // Remove the template's styles
        $query = $db->getQuery(true)
            ->delete($db->quoteName('#__template_styles'))
            ->where(
                [
                    $db->quoteName('template') . ' = :template',
                    $db->quoteName('client_id') . ' = :client_id',
                ]
            )
            ->bind(':template', $element)
            ->bind(':client_id', $clientId, ParameterType::INTEGER);
        $db->setQuery($query);
        $db->execute();

        // Remove the schema version
        $query = $db->getQuery(true)
            ->delete($db->quoteName('#__schemas'))
            ->where($db->quoteName('extension_id') . ' = :extension_id')
            ->bind(':extension_id', $extensionId, ParameterType::INTEGER);
        $db->setQuery($query);
        $db->execute();

        // Clobber any possible pending updates
        $update = Table::getInstance('update');
        $uid    = $update->find(
            [
                'element'   => $this->extension->element,
                'type'      => $this->type,
                'client_id' => $this->extension->client_id,
            ]
        );

        if ($uid) {
            $update->delete($uid);
        }

        $this->extension->delete();

        return true;
    }

    /**
     * Custom loadLanguage method
     *
     * @param   string  $path  The path where to find language files.
     *
     * @return  void
     *
     * @since   3.1
     */
    public function loadLanguage($path = null)
    {
        $source   = $this->parent->getPath('source');
        $basePath = $this->parent->extension->client_id ? JPATH_ADMINISTRATOR : JPATH_SITE;

        if (!$source) {
            $this->parent->setPath('source', $basePath . '/templates/' . $this->parent->extension->element);
        }

        $this->setManifest($this->parent->getManifest());

        $client = (string) $this->getManifest()->attributes()->client;

        // Load administrator language if not set.
        if (!$client) {
            $client = 'ADMINISTRATOR';
        }

        $base = \constant('JPATH_' . strtoupper($client));
        $extension = 'tpl_' . $this->getName();
        $source    = $path ?: $base . '/templates/' . $this->getName();

        $this->doLoadLanguage($extension, $source, $base);
    }

    /**
     * Method to parse optional tags in the manifest
     *
     * @return  void
     *
     * @since   3.4
     */
    protected function parseOptionalTags()
    {
        $this->parent->parseMedia($this->getManifest()->media);
        $this->parent->parseLanguages($this->getManifest()->languages, $this->clientId);
    }

    /**
     * Overloaded method to parse queries for template installations
     *
     * @return  void
     *
     * @since   3.4
     * @throws  \RuntimeException
     */
    protected function parseQueries()
    {
        if (\in_array($this->route, array('install', 'discover_install'))) {
            $db    = $this->getDatabase();
            $query = $db->getQuery(true);
            $lang  = Factory::getLanguage();
            $debug = $lang->setDebug(false);

            $columns = [
                $db->quoteName('template'),
                $db->quoteName('client_id'),
                $db->quoteName('home'),
                $db->quoteName('title'),
                $db->quoteName('params'),
                $db->quoteName('inheritable'),
                $db->quoteName('parent'),
            ];

            $values = $query->bindArray(
                [
                    $this->extension->element,
                    $this->extension->client_id,
                    '0',
                    Text::sprintf('JLIB_INSTALLER_DEFAULT_STYLE', Text::_($this->extension->name)),
                    $this->extension->params,
                    (int) $this->manifest->inheritable,
                    (string) $this->manifest->parent ?: '',
                ],
                [
                    ParameterType::STRING,
                    ParameterType::INTEGER,
                    ParameterType::STRING,
                    ParameterType::STRING,
                    ParameterType::STRING,
                    ParameterType::INTEGER,
                    ParameterType::STRING,
                ]
            );

            $lang->setDebug($debug);

            // Insert record in #__template_styles
            $query->insert($db->quoteName('#__template_styles'))
                ->columns($columns)
                ->values(implode(',', $values));

            // There is a chance this could fail but we don't care...
            $db->setQuery($query)->execute();
        }
    }

    /**
     * Prepares the adapter for a discover_install task
     *
     * @return  void
     *
     * @since   3.4
     */
    public function prepareDiscoverInstall()
    {
        $client                 = ApplicationHelper::getClientInfo($this->extension->client_id);
        $manifestPath           = $client->path . '/templates/' . $this->extension->element . '/templateDetails.xml';
        $this->parent->manifest = $this->parent->isManifest($manifestPath);
        $this->parent->setPath('manifest', $manifestPath);
        $this->setManifest($this->parent->getManifest());
    }

    /**
     * Removes this extension's files
     *
     * @return  void
     *
     * @since   4.0.0
     * @throws  \RuntimeException
     */
    protected function removeExtensionFiles()
    {
        // Remove files
        $this->parent->removeFiles($this->getManifest()->media);
        $this->parent->removeFiles($this->getManifest()->languages, $this->extension->client_id);

        // Delete the template directory
        if (Folder::exists($this->parent->getPath('extension_root'))) {
            Folder::delete($this->parent->getPath('extension_root'));
        } else {
            Log::add(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_TEMPLATE_DIRECTORY'), Log::WARNING, 'jerror');
        }
    }

    /**
     * Method to do any prechecks and setup the install paths for the extension
     *
     * @return  void
     *
     * @since   3.4
     * @throws  \RuntimeException
     */
    protected function setupInstallPaths()
    {
        // Get the client application target
        $cname = (string) $this->getManifest()->attributes()->client;

        if ($cname) {
            // Attempt to map the client to a base path
            $client = ApplicationHelper::getClientInfo($cname, true);

            if ($client === false) {
                throw new \RuntimeException(Text::sprintf('JLIB_INSTALLER_ABORT_TPL_INSTALL_UNKNOWN_CLIENT', $cname));
            }

            $basePath       = $client->path;
            $this->clientId = $client->id;
        } else {
            // No client attribute was found so we assume the site as the client
            $basePath       = JPATH_SITE;
            $this->clientId = 0;
        }

        // Set the template root path
        if (empty($this->element)) {
            throw new \RuntimeException(
                Text::sprintf(
                    'JLIB_INSTALLER_ABORT_MOD_INSTALL_NOFILE',
                    Text::_('JLIB_INSTALLER_' . strtoupper($this->route))
                )
            );
        }

        $this->parent->setPath('extension_root', $basePath . '/templates/' . $this->element);
    }

    /**
     * Method to do any prechecks and setup the uninstall job
     *
     * @return  void
     *
     * @since   4.0.0
     */
    protected function setupUninstall()
    {
        $this->parent->extension = $this->extension;

        $db       = $this->getDatabase();
        $name     = $this->extension->element;
        $clientId = $this->extension->client_id;

        // For a template the id will be the template name which represents the subfolder of the templates folder that the template resides in.
        if (!$name) {
            throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_TEMPLATE_ID_EMPTY'));
        }

        // Deny removing a parent template if there are children
        $query = $db->getQuery(true)
            ->select('COUNT(*)')
            ->from($db->quoteName('#__template_styles'))
            ->where(
                [
                    $db->quoteName('parent') . ' = :template',
                    $db->quoteName('client_id') . ' = :client_id',
                ]
            )
            ->bind(':template', $name)
            ->bind(':client_id', $clientId);
        $db->setQuery($query);

        if ($db->loadResult() != 0) {
            throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_PARENT_TEMPLATE'));
        }

        // Deny remove default template
        $query = $db->getQuery(true)
            ->select('COUNT(*)')
            ->from($db->quoteName('#__template_styles'))
            ->where(
                [
                    $db->quoteName('home') . ' = ' . $db->quote('1'),
                    $db->quoteName('template') . ' = :template',
                    $db->quoteName('client_id') . ' = :client_id',
                ]
            )
            ->bind(':template', $name)
            ->bind(':client_id', $clientId);
        $db->setQuery($query);

        if ($db->loadResult() != 0) {
            throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_TEMPLATE_DEFAULT'));
        }

        // Get the template root path
        $client = ApplicationHelper::getClientInfo($clientId);

        if (!$client) {
            throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_INVALID_CLIENT'));
        }

        $this->parent->setPath('extension_root', $client->path . '/templates/' . strtolower($name));
        $this->parent->setPath('source', $this->parent->getPath('extension_root'));

        // We do findManifest to avoid problem when uninstalling a list of extensions: getManifest cache its manifest file
        $this->parent->findManifest();
        $manifest = $this->parent->getManifest();

        if (!($manifest instanceof \SimpleXMLElement)) {
            // Kill the extension entry
            $this->extension->delete($this->extension->extension_id);

            // Make sure we delete the folders
            Folder::delete($this->parent->getPath('extension_root'));

            throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_TPL_UNINSTALL_INVALID_NOTFOUND_MANIFEST'));
        }

        // Attempt to load the language file; might have uninstall strings
        $this->loadLanguage();
    }

    /**
     * Method to store the extension to the database
     *
     * @return  void
     *
     * @since   3.4
     * @throws  \RuntimeException
     */
    protected function storeExtension()
    {
        // Discover installs are stored a little differently
        if ($this->route === 'discover_install') {
            $manifest_details = Installer::parseXMLInstallFile($this->parent->getPath('manifest'));

            $this->extension->manifest_cache = json_encode($manifest_details);
            $this->extension->state = 0;
            $this->extension->name = $manifest_details['name'];
            $this->extension->enabled = 1;
            $this->extension->params = $this->parent->getParams();

            if (!$this->extension->store()) {
                // Install failed, roll back changes
                throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_TPL_DISCOVER_STORE_DETAILS'));
            }

            return;
        }

        // Was there a template already installed with the same name?
        if ($this->currentExtensionId) {
            if (!$this->parent->isOverwrite()) {
                // Install failed, roll back changes
                throw new \RuntimeException(
                    Text::_('JLIB_INSTALLER_ABORT_TPL_INSTALL_ALREADY_INSTALLED')
                );
            }

            // Load the entry and update the manifest_cache
            $this->extension->load($this->currentExtensionId);
        } else {
            $this->extension->type    = 'template';
            $this->extension->element = $this->element;

            // There is no folder for templates
            $this->extension->folder       = '';
            $this->extension->enabled      = 1;
            $this->extension->protected    = 0;
            $this->extension->access       = 1;
            $this->extension->client_id    = $this->clientId;
            $this->extension->params       = $this->parent->getParams();
            $this->extension->changelogurl = $this->changelogurl;
        }

        // Name might change in an update
        $this->extension->name = $this->name;

        // Update the manifest cache for the entry
        $this->extension->manifest_cache = $this->parent->generateManifestCache();

        $this->extension->changelogurl = $this->changelogurl;

        if (!$this->extension->store()) {
            // Install failed, roll back changes
            throw new \RuntimeException(
                Text::sprintf(
                    'JLIB_INSTALLER_ABORT_ROLLBACK',
                    Text::_('JLIB_INSTALLER_' . strtoupper($this->route)),
                    $this->extension->getError()
                )
            );
        }
    }

    /**
     * Discover existing but uninstalled templates
     *
     * @return  array  Extension list
     */
    public function discover()
    {
        $results    = array();
        $site_list  = Folder::folders(JPATH_SITE . '/templates');
        $admin_list = Folder::folders(JPATH_ADMINISTRATOR . '/templates');
        $site_info  = ApplicationHelper::getClientInfo('site', true);
        $admin_info = ApplicationHelper::getClientInfo('administrator', true);

        foreach ($site_list as $template) {
            if (file_exists(JPATH_SITE . "/templates/$template/templateDetails.xml")) {
                if ($template === 'system') {
                    // Ignore special system template
                    continue;
                }

                $manifest_details = Installer::parseXMLInstallFile(JPATH_SITE . "/templates/$template/templateDetails.xml");
                $extension        = Table::getInstance('extension');
                $extension->set('type', 'template');
                $extension->set('client_id', $site_info->id);
                $extension->set('element', $template);
                $extension->set('folder', '');
                $extension->set('name', $template);
                $extension->set('state', -1);
                $extension->set('manifest_cache', json_encode($manifest_details));
                $extension->set('params', '{}');
                $results[] = $extension;
            }
        }

        foreach ($admin_list as $template) {
            if (file_exists(JPATH_ADMINISTRATOR . "/templates/$template/templateDetails.xml")) {
                if ($template === 'system') {
                    // Ignore special system template
                    continue;
                }

                $manifest_details = Installer::parseXMLInstallFile(JPATH_ADMINISTRATOR . "/templates/$template/templateDetails.xml");
                $extension        = Table::getInstance('extension');
                $extension->set('type', 'template');
                $extension->set('client_id', $admin_info->id);
                $extension->set('element', $template);
                $extension->set('folder', '');
                $extension->set('name', $template);
                $extension->set('state', -1);
                $extension->set('manifest_cache', json_encode($manifest_details));
                $extension->set('params', '{}');
                $results[] = $extension;
            }
        }

        return $results;
    }

    /**
     * Refreshes the extension table cache
     *
     * @return  boolean  Result of operation, true if updated, false on failure
     *
     * @since   3.1
     */
    public function refreshManifestCache()
    {
        // Need to find to find where the XML file is since we don't store this normally.
        $client                 = ApplicationHelper::getClientInfo($this->parent->extension->client_id);
        $manifestPath           = $client->path . '/templates/' . $this->parent->extension->element . '/templateDetails.xml';
        $this->parent->manifest = $this->parent->isManifest($manifestPath);
        $this->parent->setPath('manifest', $manifestPath);

        $manifest_details                        = Installer::parseXMLInstallFile($this->parent->getPath('manifest'));
        $this->parent->extension->manifest_cache = json_encode($manifest_details);
        $this->parent->extension->name           = $manifest_details['name'];

        try {
            return $this->parent->extension->store();
        } catch (\RuntimeException $e) {
            Log::add(Text::_('JLIB_INSTALLER_ERROR_TPL_REFRESH_MANIFEST_CACHE'), Log::WARNING, 'jerror');

            return false;
        }
    }
}
