<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * CLI tool with utilities to manage Behat integration in Moodle
 *
 * All CLI utilities uses $CFG->behat_dataroot and $CFG->prefix_dataroot as
 * $CFG->dataroot and $CFG->prefix
 *
 * @package    tool_behat
 * @copyright  2012 David Monllaó
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


if (isset($_SERVER['REMOTE_ADDR'])) {
    die(); // No access from web!.
}

// Basic functions.
require_once(__DIR__ . '/../../../../lib/clilib.php');
require_once(__DIR__ . '/../../../../lib/behat/lib.php');


// CLI options.
list($options, $unrecognized) = cli_get_params(
    array(
        'help'    => false,
        'install' => false,
        'drop'    => false,
        'enable'  => false,
        'disable' => false,
        'diag'    => false
    ),
    array(
        'h' => 'help'
    )
);

if ($options['install'] or $options['drop']) {
    define('CACHE_DISABLE_ALL', true);
}

// Checking util.php CLI script usage.
$help = "
Behat utilities to manage the test environment

Options:
--install  Installs the test environment for acceptance tests
--drop     Drops the database tables and the dataroot contents
--enable   Enables test environment and updates tests list
--disable  Disables test environment
--diag     Get behat test environment status code

-h, --help     Print out this help

Example from Moodle root directory:
\$ php admin/tool/behat/cli/util.php --enable

More info in http://docs.moodle.org/dev/Acceptance_testing#Running_tests
";

if (!empty($options['help'])) {
    echo $help;
    exit(0);
}


// Checking $CFG->behat_* vars and values.
define('BEHAT_UTIL', true);
define('CLI_SCRIPT', true);
define('ABORT_AFTER_CONFIG', true);
define('NO_OUTPUT_BUFFERING', true);

error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', '1');
ini_set('log_errors', '1');

// Getting $CFG data.
require_once(__DIR__ . '/../../../../config.php');

// CFG->behat_prefix must be set and with value different than CFG->prefix and phpunit_prefix.
if (empty($CFG->behat_prefix) ||
       ($CFG->behat_prefix == $CFG->prefix) ||
       (!empty($CFG->phpunit_prefix) && $CFG->behat_prefix == $CFG->phpunit_prefix)) {
    behat_error(BEHAT_EXITCODE_CONFIG,
        'Define $CFG->behat_prefix in config.php with a value different than $CFG->prefix and $CFG->phpunit_prefix');
}

// CFG->behat_dataroot must be set and with value different than CFG->dataroot and phpunit_dataroot.
if (empty($CFG->behat_dataroot) ||
       ($CFG->behat_dataroot == $CFG->dataroot) ||
       (!empty($CFG->phpunit_dataroot) && $CFG->behat_dataroot == $CFG->phpunit_dataroot)) {
    behat_error(BEHAT_EXITCODE_CONFIG,
        'Define $CFG->behat_dataroot in config.php with a value different than $CFG->dataroot and $CFG->phpunit_dataroot');
}

// Create behat_dataroot if it doesn't exists.
if (!file_exists($CFG->behat_dataroot)) {
    if (!mkdir($CFG->behat_dataroot, $CFG->directorypermissions)) {
        behat_error(BEHAT_EXITCODE_PERMISSIONS, '$CFG->behat_dataroot directory can not be created');
    }
}
if (!is_dir($CFG->behat_dataroot) || !is_writable($CFG->behat_dataroot)) {
    behat_error(BEHAT_EXITCODE_PERMISSIONS, '$CFG->behat_dataroot directory has no permissions or is not a directory');
}

// Check that the directory does not contains other things.
if (!file_exists("$CFG->behat_dataroot/behattestdir.txt")) {
    if ($dh = opendir($CFG->behat_dataroot)) {
        while (($file = readdir($dh)) !== false) {
            if ($file === 'behat' or $file === '.' or $file === '..' or $file === '.DS_Store') {
                continue;
            }
            behat_error(BEHAT_EXITCODE_CONFIG, '$CFG->behat_dataroot directory is not empty, ensure this is the directory where you want to install behat test dataroot');
        }
        closedir($dh);
        unset($dh);
        unset($file);
    }

    // Now we create dataroot directory structure for behat tests.
    testing_initdataroot($CFG->behat_dataroot, 'behat');
}

// Overrides vars with behat-test ones.
$vars = array('wwwroot', 'prefix', 'dataroot');
foreach ($vars as $var) {
    $CFG->{$var} = $CFG->{'behat_' . $var};
}

$CFG->noemailever = true;
$CFG->passwordsaltmain = 'moodle';

$CFG->themerev = 1;
$CFG->jsrev = 1;

// Unset cache and temp directories to reset them again with the new $CFG->dataroot.
unset($CFG->cachedir);
unset($CFG->tempdir);

// Continues setup.
define('ABORT_AFTER_CONFIG_CANCEL', true);
require("$CFG->dirroot/lib/setup.php");

require_once($CFG->libdir.'/adminlib.php');
require_once($CFG->libdir.'/upgradelib.php');
require_once($CFG->libdir.'/clilib.php');
require_once($CFG->libdir.'/pluginlib.php');
require_once($CFG->libdir.'/installlib.php');
require_once($CFG->libdir.'/testing/classes/test_lock.php');

if ($unrecognized) {
    $unrecognized = implode("\n  ", $unrecognized);
    cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
}

// Behat utilities.
require_once($CFG->libdir . '/behat/classes/util.php');
require_once($CFG->libdir . '/behat/classes/behat_command.php');

// Run command (only one per time).
if ($options['install']) {
    behat_util::install_site();
    mtrace("Acceptance tests site installed");
} else if ($options['drop']) {
    // Ensure no tests are running.
    test_lock::acquire('behat');
    behat_util::drop_site();
    mtrace("Acceptance tests site dropped");
} else if ($options['enable']) {
    behat_util::start_test_mode();
    $runtestscommand = behat_command::get_behat_command() . ' --config '
        . $CFG->behat_dataroot . DIRECTORY_SEPARATOR . 'behat' . DIRECTORY_SEPARATOR . 'behat.yml';
    mtrace("Acceptance tests environment enabled, to run the tests use:\n " . $runtestscommand);
} else if ($options['disable']) {
    behat_util::stop_test_mode();
    mtrace("Acceptance tests environment disabled");
} else if ($options['diag']) {
    $code = behat_util::get_behat_status();
    exit($code);
} else {
    echo $help;
}

exit(0);
