<?php
/**
 * Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * This file is part of a Moko Consulting project.
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

/**
 * MokoCassiopeia install/update/uninstall script.
 *
 * On update: renames the template to MokoOnyx (dirs + database),
 * copies all style params, creates matching styles, copies user files,
 * and redirects the update server. No external downloads needed.
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Installer\InstallerAdapter;
use Joomla\CMS\Log\Log;

class Tpl_MokocassiopeiaInstallerScript
{
    private const MIN_PHP    = '8.1.0';
    private const MIN_JOOMLA = '4.4.0';

    private const OLD_NAME    = 'mokocassiopeia';
    private const NEW_NAME    = 'mokoonyx';
    private const OLD_DISPLAY = 'MokoCassiopeia';
    private const NEW_DISPLAY = 'MokoOnyx';

    private const ONYX_UPDATES_URL = 'https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx/raw/branch/main/updates.xml';

    // ── Joomla lifecycle methods ───────────────────────────────────────

    public function preflight(string $type, InstallerAdapter $parent): bool
    {
        if (version_compare(PHP_VERSION, self::MIN_PHP, '<')) {
            Factory::getApplication()->enqueueMessage(
                sprintf('MokoCassiopeia requires PHP %s+. Running %s.', self::MIN_PHP, PHP_VERSION),
                'error'
            );
            return false;
        }

        if (version_compare(JVERSION, self::MIN_JOOMLA, '<')) {
            Factory::getApplication()->enqueueMessage(
                sprintf('MokoCassiopeia requires Joomla %s+. Running %s.', self::MIN_JOOMLA, JVERSION),
                'error'
            );
            return false;
        }

        return true;
    }

    public function install(InstallerAdapter $parent): bool
    {
        $this->log('MokoCassiopeia installed.');
        return true;
    }

    public function update(InstallerAdapter $parent): bool
    {
        $this->log('MokoCassiopeia update() — version ' . ($parent->getManifest()->version ?? '?'));
        return true;
    }

    public function uninstall(InstallerAdapter $parent): bool
    {
        $this->log('MokoCassiopeia uninstalled.');
        return true;
    }

    public function postflight(string $type, InstallerAdapter $parent): bool
    {
        if ($type === 'update') {
            $this->log('=== MokoCassiopeia → MokoOnyx bridge ===');
            $this->bridge();
        }

        return true;
    }

    // ── Bridge: rename-in-place + DB migration ─────────────────────────

    private function bridge(): void
    {
        $app = Factory::getApplication();

        // 1. Rename template directory
        $templateRenamed = $this->renameDir(
            JPATH_ROOT . '/templates/' . self::OLD_NAME,
            JPATH_ROOT . '/templates/' . self::NEW_NAME,
            'template'
        );

        if (!$templateRenamed && !is_dir(JPATH_ROOT . '/templates/' . self::NEW_NAME)) {
            $app->enqueueMessage(
                'Could not rename template directory to MokoOnyx. '
                . 'Please rename <code>templates/mokocassiopeia</code> to <code>templates/mokoonyx</code> manually.',
                'warning'
            );
            return;
        }

        // 2. Rename media directory
        $this->renameDir(
            JPATH_ROOT . '/media/templates/site/' . self::OLD_NAME,
            JPATH_ROOT . '/media/templates/site/' . self::NEW_NAME,
            'media'
        );

        // 3. Update #__extensions
        $this->updateExtensions();

        // 4. Migrate template styles (create matching MokoOnyx styles with same params)
        $this->migrateStyles();

        // 5. Copy user files (custom themes, user.css, user.js)
        $this->copyUserFiles();

        // 6. Redirect update server to MokoOnyx
        $this->updateUpdateServer();

        // 7. Notify
        $app->enqueueMessage(
            '<strong>MokoCassiopeia has been renamed to MokoOnyx.</strong><br>'
            . 'All template settings, styles, and custom files have been migrated. '
            . 'MokoOnyx is now your active site template.',
            'success'
        );

        $this->log('=== Bridge completed ===');
    }

    // ── Bridge helpers ─────────────────────────────────────────────────

    private function renameDir(string $old, string $new, string $label): bool
    {
        if (!is_dir($old)) {
            $this->log("Bridge: {$label} dir not found ({$old}) — skipping.");
            return false;
        }

        if (is_dir($new)) {
            $this->log("Bridge: {$label} dir already exists ({$new}) — skipping rename.");
            return true;
        }

        if (@rename($old, $new)) {
            $this->log("Bridge: renamed {$label} dir → " . self::NEW_NAME);
            return true;
        }

        $this->log("Bridge: failed to rename {$label} dir.", 'error');
        return false;
    }

    private function updateExtensions(): void
    {
        $db = Factory::getDbo();

        try {
            $query = $db->getQuery(true)
                ->update('#__extensions')
                ->set($db->quoteName('element') . ' = ' . $db->quote(self::NEW_NAME))
                ->set($db->quoteName('name') . ' = ' . $db->quote(self::NEW_NAME))
                ->where($db->quoteName('element') . ' = ' . $db->quote(self::OLD_NAME))
                ->where($db->quoteName('type') . ' = ' . $db->quote('template'));
            $db->setQuery($query)->execute();

            $n = $db->getAffectedRows();
            if ($n > 0) {
                $this->log("Bridge: updated {$n} row(s) in #__extensions.");
            }
        } catch (\Throwable $e) {
            $this->log('Bridge: #__extensions failed: ' . $e->getMessage(), 'error');
        }
    }

    private function migrateStyles(): void
    {
        $db = Factory::getDbo();

        // Get all MokoCassiopeia styles (may already be renamed to mokoonyx by updateExtensions)
        $query = $db->getQuery(true)
            ->select('*')
            ->from('#__template_styles')
            ->where('(' . $db->quoteName('template') . ' = ' . $db->quote(self::OLD_NAME)
                . ' OR ' . $db->quoteName('template') . ' = ' . $db->quote(self::NEW_NAME) . ')')
            ->where($db->quoteName('client_id') . ' = 0');
        $styles = $db->setQuery($query)->loadObjectList();

        if (empty($styles)) {
            $this->log('Bridge: no styles found to migrate.');
            return;
        }

        foreach ($styles as $style) {
            $newTitle  = str_replace(self::OLD_DISPLAY, self::NEW_DISPLAY, $style->title);
            $newTitle  = str_replace(self::OLD_NAME, self::NEW_NAME, $newTitle);
            $newParams = is_string($style->params)
                ? str_replace(self::OLD_NAME, self::NEW_NAME, $style->params)
                : $style->params;

            $update = $db->getQuery(true)
                ->update('#__template_styles')
                ->set($db->quoteName('template') . ' = ' . $db->quote(self::NEW_NAME))
                ->set($db->quoteName('title')    . ' = ' . $db->quote($newTitle))
                ->set($db->quoteName('params')   . ' = ' . $db->quote($newParams))
                ->where('id = ' . (int) $style->id);

            try {
                $db->setQuery($update)->execute();
            } catch (\Throwable $e) {
                $this->log('Bridge: style update failed (id=' . $style->id . '): ' . $e->getMessage(), 'warning');
            }
        }

        $this->log('Bridge: migrated ' . count($styles) . ' style(s).');
    }

    private function copyUserFiles(): void
    {
        $media = JPATH_ROOT . '/media/templates/site/' . self::NEW_NAME;
        if (!is_dir($media)) {
            return;
        }

        // User files are already in the renamed media dir — nothing to copy.
        // They were moved with the rename. Log for clarity.
        $this->log('Bridge: user files preserved via directory rename.');
    }

    private function updateUpdateServer(): void
    {
        $db = Factory::getDbo();

        try {
            $query = $db->getQuery(true)
                ->update('#__update_sites')
                ->set($db->quoteName('location') . ' = ' . $db->quote(self::ONYX_UPDATES_URL))
                ->set($db->quoteName('name') . ' = ' . $db->quote(self::NEW_DISPLAY))
                ->where($db->quoteName('location') . ' LIKE ' . $db->quote('%MokoCassiopeia%'));
            $db->setQuery($query)->execute();

            $n = $db->getAffectedRows();
            if ($n > 0) {
                $this->log("Bridge: redirected {$n} update site(s) to MokoOnyx.");
            }
        } catch (\Throwable $e) {
            $this->log('Bridge: update server redirect failed: ' . $e->getMessage(), 'warning');
        }

        // Clear cached updates for old element
        try {
            $query = $db->getQuery(true)
                ->delete('#__updates')
                ->where($db->quoteName('element') . ' = ' . $db->quote(self::OLD_NAME));
            $db->setQuery($query)->execute();
        } catch (\Throwable $e) {
            // Not critical
        }
    }

    // ── Logging ────────────────────────────────────────────────────────

    private function log(string $message, string $priority = 'info'): void
    {
        static $init = false;
        if (!$init) {
            Log::addLogger(
                ['text_file' => 'mokocassiopeia_bridge.log.php'],
                Log::ALL,
                ['mokocassiopeia_bridge']
            );
            $init = true;
        }

        $levels = ['info' => Log::INFO, 'warning' => Log::WARNING, 'error' => Log::ERROR];
        Log::add($message, $levels[$priority] ?? Log::INFO, 'mokocassiopeia_bridge');
    }
}