<?php
/**
 * cliUpgrade.php
 *
 * ProcessMaker Open Source Edition
 * Copyright (C) 2011 Colosa Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, contact Colosa Inc, 2566 Le Jeune Rd.,
 * Coral Gables, FL, 33134, USA, or email info@colosa.com.
 *
 * @author Alexandre Rosenfeld <alexandre@colosa.com>
 * @package workflow-engine-bin-tasks
 */

G::LoadClass("system");
G::LoadClass("wsTools");

CLI::taskName('upgrade');
CLI::taskDescription(<<<EOT
    Upgrade workspaces.

    This command should be run after ProcessMaker files are upgraded so that all
    workspaces are upgraded to the current version.
EOT
);
CLI::taskOpt("buildACV", "If the option is enabled, performs the Build Cache View.", "ACV", "buildACV");
CLI::taskRun(run_upgrade);


/**
 * A version of rm_dir which does not exits on error.
 *
 * @param  string $filename directory or file to remove
 * @param  bool $filesOnly either to remove the containing directory as well or not
 */
function rm_dir($filename, $filesOnly = false)
{
    if (is_file($filename)) {
        @unlink($filename) or CLI::logging(CLI::error("Could not remove file $filename")."\n");
    } else {
        foreach (glob("$filename/*") as $f) {
            rm_dir($f);
        }
        if (!$filesOnly) {
            @rmdir($filename) or CLI::logging(CLI::error("Could not remove directory $filename")."\n");
        }
    }
}

function run_upgrade($command, $args)
{
    CLI::logging("UPGRADE", PROCESSMAKER_PATH . "upgrade.log");
    CLI::logging("Checking files integrity...\n");
    //setting flag to true to check into sysGeneric.php
    $flag = G::isPMUnderUpdating(1);
    //start to upgrade
    $checksum = System::verifyChecksum();
    if ($checksum === false) {
        CLI::logging(CLI::error("checksum.txt not found, integrity check is not possible") . "\n");
        if (!CLI::question("Integrity check failed, do you want to continue the upgrade?")) {
            CLI::logging("Upgrade failed\n");
            $flag = G::isPMUnderUpdating(0);
            die();
        }
    } else {
        if (!empty($checksum['missing'])) {
            CLI::logging(CLI::error("The following files were not found in the installation:")."\n");
            foreach ($checksum['missing'] as $missing) {
                CLI::logging(" $missing\n");
            }
        }
        if (!empty($checksum['diff'])) {
            CLI::logging(CLI::error("The following files have modifications:")."\n");
            foreach ($checksum['diff'] as $diff) {
                CLI::logging(" $diff\n");
            }
        }
        if (!(empty($checksum['missing']) || empty($checksum['diff']))) {
            if (!CLI::question("Integrity check failed, do you want to continue the upgrade?")) {
                CLI::logging("Upgrade failed\n");
                $flag = G::isPMUnderUpdating(0);
                die();
            }
        }
    }
    CLI::logging("Clearing cache...\n");
    if (defined('PATH_C')) {
        G::rm_dir(PATH_C);
        @mkdir(PATH_C, 0777, true);
    }
    $workspaces = get_workspaces_from_args($command);
    $count = count($workspaces);
    $first = true;
    $errors = false;
    $countWorkspace = 1;
    $buildCacheView = array_key_exists("buildACV", $args);
    foreach ($workspaces as $index => $workspace) {
        try {
            $countWorkspace = $countWorkspace + $index;
            CLI::logging("Upgrading workspaces ($countWorkspace/$count): " . CLI::info($workspace->name) . "\n");
            $workspace->upgrade($first, $buildCacheView, $workspace->name);
            $workspace->close();
            $first = false;
        } catch (Exception $e) {
            CLI::logging("Errors upgrading workspace " . CLI::info($workspace->name) . ": " . CLI::error($e->getMessage()) . "\n");
            $errors = true;
        }
    }
    if ($errors) {
        CLI::logging("Upgrade finished but there were errors upgrading workspaces.\n");
        CLI::logging(CLI::error("Please check the log above to correct any issues.")."\n");
    } else {
        CLI::logging("Upgrade successful\n");
    }
    //setting flag to false
    $flag = G::isPMUnderUpdating(0);
}