<?php
use VersionPress\ChangeInfos\CommitMessageParser;
use VersionPress\DI\VersionPressServices;
use VersionPress\Git\GitRepository;
use VersionPress\Git\Reverter;

if (!in_array($_GET['method'], ['undo', 'rollback'])) {
    exit();
}

global $versionPressContainer;
/** @var GitRepository $repository */
$repository = $versionPressContainer->resolve(VersionPressServices::GIT_REPOSITORY);
/** @var Reverter $reverter */
$reverter = $versionPressContainer->resolve(VersionPressServices::REVERTER);
/** @var CommitMessageParser $commitMessageParser */
$commitMessageParser = $versionPressContainer->resolve(VersionPressServices::COMMIT_MESSAGE_PARSER);

$canRevert = $reverter->canRevert();
$commit = $repository->getCommit($_GET['commit']);
$changeInfo = $commitMessageParser->parse($commit->getMessage());

$method = $_GET['method'];

$title = ($method == 'undo')
    ? "<div class='title-content'>Undo <em>{$changeInfo->getChangeDescription()}</em> ?</div>"
    : "<div class='title-content'>Roll back to <em>{$commit->getDate()->format('d-M-y H:i:s')}</em> ?</div>";

$message = "
        <p>
            For Early Access releases, please have a backup.
            <a href='http://docs.versionpress.net/en/feature-focus/undo-and-rollback' target='_blank'>
                Learn more about reverts.
            </a>
        </p>";

$errors = (!$canRevert ? "
        <p class='undo-warning'>
            <span class='icon icon-warning'></span>
            You have <a href='http://docs.versionpress.net/en/feature-focus/undo-and-rollback#uncommitted-files' target='_blank'>uncommitted changes</a> in your WordPress directory.<br>Please commit them before doing a revert.
        </p>" : "");

$proceedUrl = add_query_arg([
    'action' => 'vp_' . $method,
    'commit' => $commit->getHash(),
    '_wpnonce' => wp_create_nonce('vp_revert')
], admin_url('admin.php'));

$buttonProceed = "<a " .
    "class='button " . (!$canRevert ? "disabled" : "") . "' " .
    "id='popover-ok-button' " .
    "href='" . (!$canRevert ? "javascript:;" : $proceedUrl) . "'>Proceed</a>";
$buttonCancel = "<a " .
    "class='button cancel' " .
    "id='popover-cancel-button' " .
    "href='" . (vp_is_ajax() ? "javascript:;" : menu_page_url('versionpress', false)) . "'>Cancel</a>";

$body = "
        <div>
            {$message}
            {$errors}
            <div class='button-container'>
                {$buttonProceed}
                {$buttonCancel}
            </div>
        </div>
    ";

if (vp_is_ajax()) {
    $response = new stdClass();
    $response->body = $body;
    echo json_encode($response);
    wp_die();
} else {
    echo "<h3>{$title}</h3>";
    echo $body;
}