#!/usr/bin/env php
<?php

/*
 +-----------------------------------------------------------------------+
 | This file is part of the Roundcube Webmail client                     |
 |                                                                       |
 | Copyright (C) The Roundcube Dev Team                                  |
 |                                                                       |
 | Licensed under the GNU General Public License version 3 or            |
 | any later version with exceptions for skins & plugins.                |
 | See the README file for a full license statement.                     |
 |                                                                       |
 | PURPOSE:                                                              |
 |   Update an existing Roundcube installation with files from           |
 |   this version                                                        |
 +-----------------------------------------------------------------------+
 | Author: Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+
*/

define('INSTALL_PATH', realpath(__DIR__ . '/..') . '/');

require_once INSTALL_PATH . 'program/include/clisetup.php';

if (!function_exists('system')) {
    rcube::raise_error('PHP system() function is required. Check disable_functions in php.ini.', false, true);
}

$target_dir = unslashify(end($_SERVER['argv']));
$accept = in_array('-y', $_SERVER['argv']) ? 'y' : null;

if (empty($target_dir) || !is_dir(realpath($target_dir))) {
    rcube::raise_error("Invalid target: not a directory\nUsage: installto.sh [-y] <TARGET>", false, true);
}

// read version from iniset.php
$iniset = @file_get_contents($target_dir . '/program/include/iniset.php');
if (!preg_match('/define\(.RCMAIL_VERSION.,\s*.([0-9.]+[a-z0-9-]*)/', $iniset, $m)) {
    rcube::raise_error("No valid Roundcube installation found at {$target_dir}", false, true);
}

$oldversion = $m[1];

if (version_compare(version_parse($oldversion), version_parse(RCMAIL_VERSION), '>')) {
    rcube::raise_error("Target installation already in version {$oldversion}.", false, true);
}

if (version_compare(version_parse($oldversion), version_parse(RCMAIL_VERSION), '==')) {
    echo "Target installation already in version {$oldversion}. Do you want to update again? (y/N)\n";
} else {
    echo "Upgrading from {$oldversion}. Do you want to continue? (y/N)\n";
}

$input = $accept ?: trim(fgets(\STDIN));

if (strtolower($input) == 'y') {
    echo 'Copying files to target location...';

    $adds = [];
    $dirs = ['bin', 'SQL', 'plugins', 'skins', 'program', 'docs'];

    if (is_dir(INSTALL_PATH . 'vendor') && (!is_file("{$target_dir}/composer.json") || rcmail_install::vendor_dir_untouched($target_dir))) {
        $dirs[] = 'vendor';
    }
    if (file_exists("{$target_dir}/installer")) {
        $dirs[] = 'installer';
    }

    foreach ($dirs as $dir) {
        // @FIXME: should we use --delete for all directories?
        $delete = in_array($dir, ['program', 'vendor', 'installer']) ? '--delete ' : '';
        $command = 'rsync -aC --out-format=%n ' . $delete . INSTALL_PATH . "{$dir}/ {$target_dir}/{$dir}/";

        if (system($command, $ret) === false || $ret > 0) {
            rcube::raise_error("Failed to execute command: {$command}", false, true);
        }
    }

    $files = [
        'config/defaults.inc.php',
        'jsdeps.json',
        'index.php',
        'CHANGELOG.md',
        'README.md',
        'public_html/index.php',
        'public_html/installer.php',
        'public_html/static.php',
    ];

    foreach ($files as $file) {
        $command = 'rsync -a --out-format=%n ' . INSTALL_PATH . "{$file} {$target_dir}/{$file}";

        if (file_exists(INSTALL_PATH . $file) && (system($command, $ret) === false || $ret > 0)) {
            rcube::raise_error("Failed to execute command: {$command}", false, true);
        }
    }

    // Copy composer.json/composer.lock files
    if (file_exists("{$target_dir}/composer.json")) {
        @unlink("{$target_dir}/composer.json-dist");
        copy(INSTALL_PATH . 'composer.json', "{$target_dir}/composer.json-dist");
    } else {
        copy(INSTALL_PATH . 'composer.json', "{$target_dir}/composer.json");
        if (in_array('vendor', $dirs)) {
            @unlink("{$target_dir}/composer.lock");
            copy(INSTALL_PATH . 'composer.lock', "{$target_dir}/composer.lock");
        }
    }

    // Copy .htaccess or .user.ini if needed
    foreach (['public_html/.htaccess', 'public_html/.user.ini'] as $file) {
        if (file_exists(INSTALL_PATH . $file)) {
            if (!file_exists("{$target_dir}/{$file}")
                || is_link("{$target_dir}/{$file}")
                || file_get_contents(INSTALL_PATH . $file) != file_get_contents("{$target_dir}/{$file}")
            ) {
                if (copy(INSTALL_PATH . $file, "{$target_dir}/{$file}.new")) {
                    echo "{$file}.new\n";
                    $adds[] = "NOTICE: New {$file} file saved as {$file}.new.";
                }
            }
        }
    }

    // Remove old links (<1.7)
    foreach (['plugins', 'skins', 'program/js', 'program/resources', 'program'] as $file) {
        $file = "{$target_dir}/public_html/{$file}";
        if (is_link($file)) {
            unlink($file);
        } elseif (is_dir($file)) {
            rmdir($file);
        }
    }

    // Remove old (<1.0) .htaccess file
    @unlink("{$target_dir}/program/.htaccess");
    echo "done.\n\n";

    if (is_dir("{$target_dir}/skins/default")) {
        echo 'Removing old default skin...';
        system("rm -rf {$target_dir}/skins/default {$target_dir}/plugins/jqueryui/themes/default");
        foreach (glob(INSTALL_PATH . 'plugins/*/skins') as $plugin_skin_dir) {
            $plugin_skin_dir = preg_replace('!^.*' . INSTALL_PATH . '!', '', $plugin_skin_dir);
            if (is_dir("{$target_dir}/{$plugin_skin_dir}/classic")) {
                system("rm -rf {$target_dir}/{$plugin_skin_dir}/default");
            }
        }
        echo "done.\n\n";
    }

    // Warn about situation when using "complete" package to update "custom" installation (#7087)
    // Note: "Complete" package do not include jsdeps.json nor install-jsdeps.sh
    if (file_exists("{$target_dir}/jsdeps.json") && !file_exists(INSTALL_PATH . 'jsdeps.json')) {
        $adds[] = 'WARNING: JavaScript dependencies update skipped. New jsdeps.json file not found.';
    }
    // check if js-deps are up-to-date
    elseif (file_exists("{$target_dir}/jsdeps.json") && file_exists("{$target_dir}/bin/install-jsdeps.sh")) {
        $jsdeps = json_decode(file_get_contents("{$target_dir}/jsdeps.json"));
        $package = $jsdeps->dependencies[0];
        $dest_file = $target_dir . '/' . $package->dest;

        if (!file_exists($dest_file) || sha1_file($dest_file) !== $package->sha1) {
            echo 'Installing JavaScript dependencies...';
            system("cd {$target_dir} && bin/install-jsdeps.sh");
            echo "done.\n\n";
        }
    }

    if (!empty($adds)) {
        echo implode("\n", $adds) . "\n\n";
    }

    echo "Running update script at target...\n";
    system("cd {$target_dir} && bin/update.sh --version={$oldversion}" . ($accept ? ' -y' : ''));
    echo "All done.\n";
} else {
    echo "Update cancelled. See ya!\n";
}