<?php
# -- BEGIN LICENSE BLOCK ----------------------------------
#
# This file is part of postExpired, a plugin for Dotclear 2.
# 
# Copyright (c) 2009-2021 Jean-Christian Denis and contributors
# 
# Licensed under the GPL version 2.0 license.
# A copy of this license is available in LICENSE file or at
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
#
# -- END LICENSE BLOCK ------------------------------------

if (!defined('DC_CONTEXT_ADMIN')) {
    return null;
}

# Check plugin version
if ($core->getVersion('postExpired') != $core->plugins->moduleInfo('postExpired', 'version')) {
    return null;
}

# Check user right
if (!$core->auth->check('contentadmin', $core->blog->id)) {
    return null;
}

# Admin behaviors
$core->addBehavior(
    'adminPostsActionsPage',
    ['adminBehaviorPostExpired', 'adminPostsActionsPage']
);
$core->addBehavior(
    'adminPagesActionsPage',
    ['adminBehaviorPostExpired', 'adminPostsActionsPage']
);
$core->addBehavior(
    'adminPostHeaders',
    ['adminBehaviorPostExpired', 'adminPostHeaders']
);
$core->addBehavior(
    'adminPageHeaders',
    ['adminBehaviorPostExpired', 'adminPostHeaders']
);
$core->addBehavior(
    'adminPostFormItems',
    ['adminBehaviorPostExpired', 'adminPostFormItems']
);
$core->addBehavior(
    'adminPageFormItems',
    ['adminBehaviorPostExpired', 'adminPostFormItems']
);
$core->addBehavior(
    'adminBeforePostDelete',
    ['adminBehaviorPostExpired', 'adminBeforePostDelete']
);
$core->addBehavior(
    'adminBeforePageDelete',
    ['adminBehaviorPostExpired', 'adminBeforePostDelete']
);
$core->addBehavior(
    'adminAfterPostUpdate',
    ['adminBehaviorPostExpired', 'adminAfterPostSave']
);
$core->addBehavior(
    'adminAfterPageUpdate',
    ['adminBehaviorPostExpired', 'adminAfterPostSave']
);
$core->addBehavior(
    'adminAfterPostCreate',
    ['adminBehaviorPostExpired', 'adminAfterPostSave']
);
$core->addBehavior(
    'adminAfterPageCreate',
    ['adminBehaviorPostExpired', 'adminAfterPostSave']
);

/**
 * @ingroup DC_PLUGIN_POSTEXPIRED
 * @brief Scheduled post change - admin methods.
 * @since 2.6
 */
class adminBehaviorPostExpired
{
    /**
     * Add actions to posts page combo
     * 
     * @param  dcCore             $core dcCore instance
     * @param  dcPostsActionsPage $ap   dcPostsActionsPage instance
     */
    public static function adminPostsActionsPage(dcCore $core, dcPostsActionsPage $pa)
    {
        $pa->addAction(
            array(
                __('Expired entries') => array(
                    __('Add expired date') => 'post_expired_add'
                )
            ),
            array('adminBehaviorPostExpired', 'callbackAdd')
        );

        $pa->addAction(
            array(
                __('Expired entries') => array(
                    __('Remove expired date') => 'post_expired_remove'
                )
            ),
            array('adminBehaviorPostExpired', 'callbackRemove')
        );
    }

    /**
     * Add javascript for date field and toggle
     * 
     * @return string HTML head
     */
    public static function adminPostHeaders()
    {
        return dcPage::jsLoad('index.php?pf=postExpired/js/postexpired.js');
    }

    /**
     * Add form to post sidebar
     * 
     * @param  ArrayObject $main_items    Main items
     * @param  ArrayObject $sidebar_items Sidebar items
     * @param  record      $post          Post record or null
     */
    public static function adminPostFormItems(ArrayObject $main_items, ArrayObject $sidebar_items, $post)
    {
        if ($post === null) {
            return null;
        }

        $sidebar_items['post_expired'] = array(
            'title' => __('Expired date'),
            'items' => self::fieldsPostExpired(
                $GLOBALS['core'],
                $post->post_type,
                $post->post_id
            )
        );
    }

    /**
     * Delete expired date on post edition
     * 
     * @param  integer $post_id Post id
     */
    public static function adminBeforePostDelete($post_id)
    {
        self::delPostExpired($GLOBALS['core'], $post_id);
    }

    /**
     * Add expired date on post edition
     * 
     * @param  cursor $cur      Current post cursor
     * @param  integer $post_id Post id
     */
    public static function adminAfterPostSave(cursor $cur, $post_id)
    {
        global $core;

        self::delPostExpired($core, $post_id);

        if (!empty($_POST['post_expired_date'])
         && (!empty($_POST['post_expired_status'])
          || !empty($_POST['post_expired_category'])
          || !empty($_POST['post_expired_selected'])
          || !empty($_POST['post_expired_comment'])
          || !empty($_POST['post_expired_trackback']))) {
            self::setPostExpired($core, $post_id, $_POST);
        }
    }

    /**
     * Posts actions callback to add expired date
     * 
     * @param  dcCore             $core dcCore instance
     * @param  dcPostsActionsPage $pa   dcPostsActionsPage instance
     * @param  ArrayObject        $post _POST actions
     */
    public static function callbackAdd(dcCore $core, dcPostsActionsPage $pa, ArrayObject $post)
    {
        # No entry
        $posts_ids = $pa->getIDs();
        if (empty($posts_ids)) {
            throw new Exception(__('No entry selected'));
        }

        # Add epired date
        if (!empty($post['post_expired_date'])
         && (!empty($post['post_expired_status'])
          || !empty($post['post_expired_category'])
          || !empty($post['post_expired_selected'])
          || !empty($post['post_expired_comment'])
          || !empty($post['post_expired_trackback']))) {
            foreach($posts_ids as $post_id) {
                self::delPostExpired($core, $post_id);
                self::setPostExpired($core, $post_id, $post);
            }

            dcPage::addSuccessNotice(__('Expired date added.'));
            $pa->redirect(true);

        # Display form
        } else {
            # Get records to know post type
            $posts = $pa->getRS();

            $pa->beginPage(
                dcPage::breadcrumb(array(
                    html::escapeHTML($core->blog->name) => '',
                    $pa->getCallerTitle() => $pa->getRedirection(true),
                    __('Add expired date to this selection') => '' 
                )),
                dcPage::jsDatePicker() .
                self::adminPostHeaders()
            );

            echo
            '<form action="' . $pa->getURI() . '" method="post">' .
            $pa->getCheckboxes() .

            implode('', self::fieldsPostExpired($core, $posts->post_type)) .

            $core->formNonce() .
            $pa->getHiddenFields() .
            form::hidden(array('action'), 'post_expired_add') .
            '<input type="submit" value="' . __('Save') . '" /></p>' .
            '</form>';

            $pa->endPage();
        }
    }

    /**
     * Posts actions callback to add expired date
     * 
     * @param  dcCore             $core dcCore instance
     * @param  dcPostsActionsPage $pa   dcPostsActionsPage instance
     * @param  ArrayObject        $post _POST actions
     */
    public static function callbackRemove(dcCore $core, dcPostsActionsPage $pa, ArrayObject $post)
    {
        # No entry
        $posts_ids = $pa->getIDs();
        if (empty($posts_ids)) {
            throw new Exception(__('No entry selected'));
        }

        # Delete expired date
        foreach($posts_ids as $post_id) {
            self::delPostExpired($core, $post_id);
        }

        dcPage::addSuccessNotice(__('Expired date deleted.'));
        $pa->redirect(true);
    }

    /**
     * Delete expired date
     * 
     * @param  dcCore  $core    dcCore instance
     * @param  integer $post_id Post id
     */
    protected static function delPostExpired(dcCore $core, $post_id)
    {
        $core->meta->delPostMeta($post_id, 'post_expired');
    }

    /**
     * Save expired date
     * 
     * @param dcCore  $core    dcCore instance
     * @param integer $post_id Post id
     * @param array   $post    _POST fields
     */
    protected static function setPostExpired(dcCore $core, $post_id, $post)
    {
        $post_expired = array(
            'status'=> '',
            'category'=> '',
            'selected'=> '',
            'comment'=> '',
            'trackback' => '',
            'date'=> date(
                'Y-m-d H:i:00',
                strtotime($post['post_expired_date'])
            )
        );

        if (!empty($post['post_expired_status'])) {
            $post_expired['status'] =
                (string) $post['post_expired_status'];
        }
        if (!empty($post['post_expired_category'])) {
            $post_expired['category'] =
                (string) $post['post_expired_category'];
        }
        if (!empty($post['post_expired_selected'])) {
            $post_expired['selected'] =
                (string) $post['post_expired_selected'];
        }
        if (!empty($post['post_expired_comment'])) {
            $post_expired['comment'] =
                (string) $post['post_expired_comment'];
        }
        if (!empty($post['post_expired_trackback'])) {
            $post_expired['trackback'] =
                (string) $post['post_expired_trackback'];
        }

        $core->meta->setPostMeta(
            $post_id,
            'post_expired',
            encodePostExpired($post_expired)
        );
    }

    /**
     * Expired date form fields
     * 
     * @param  dcCore $core      dcCore instance
     * @param  string $post_type Posts type
     * @return array             Array of HTML form fields
     */
    protected static function fieldsPostExpired(dcCore $core, $post_type, $post_id = null)
    {
        $fields = $post_expired = array();

        if ($post_id) {

            $rs = $core->meta->getMetadata([
                'meta_type' => 'post_expired',
                'post_id' => $post_id,
                'limit' => 1
            ]);

            if (!$rs->isEmpty()) {
                $post_expired = decodePostExpired($rs->meta_id);
            }
        }

        $fields['post_expired_date'] =
            '<p><label for="post_expired_date">' .
            __('Date:') . '</label>' .
            form::field(
                'post_expired_date',
                16,
                16,
                empty($post_expired['date']) ? 
                    '' : $post_expired['date']
            ) . '</p>';

        $fields['post_expired_status'] =
            '<h5>' . __('On this date, change:') . '</h5>' .
            '<p><label for="post_expired_status">' .
            __('Status:') . '</label>' .
            form::combo(
                'post_expired_status',
                self::statusCombo(),
                empty($post_expired['status']) ? 
                    '' : $post_expired['status']
            ) . '</p>';

        if ($post_type == 'post') {

            $fields['post_expired_category'] =
                '<p><label for="post_expired_category">' .
                __('Category:') . '</label>' .
                form::combo(
                    'post_expired_category',
                    self::categoriesCombo(
                        $core->blog->getCategories(
                            array('post_type' => 'post')
                        )
                    ),
                    empty($post_expired['category']) ? 
                        '' : $post_expired['category']
                ) . '</p>';

            $fields['post_expired_selected'] =
                '<p><label for="post_expired_selected">' .
                __('Selection:') . '</label>' .
                form::combo(
                    'post_expired_selected',
                    self::selectedCombo(),
                    empty($post_expired['selected']) ? 
                        '' : $post_expired['selected']
                ) . '</p>';
        }

        $fields['post_expired_comment'] =
            '<p><label for="post_expired_comment">' .
            __('Comments status:') . '</label>' .
            form::combo(
                'post_expired_comment',
                self::commentCombo(),
                empty($post_expired['comment']) ? 
                    '' : $post_expired['comment']
            ) . '</p>';

        $fields['post_expired_trackback'] =
            '<p><label for="post_expired_trackback">' .
            __('Trackbacks status:') . '</label>' .
            form::combo(
                'post_expired_trackback',
                self::trackbackCombo(),
                empty($post_expired['trackback']) ? 
                    '' : $post_expired['trackback']
            ) . '</p>';

        return $fields;
    }

    /**
     * Custom categories combo
     * 
     * @param  record $categories Categories recordset
     * @return array              Categorires combo
     */
    protected static function categoriesCombo(record $categories)
    {
        # Getting categories
        $categories_combo = array(
            __('Not changed') => '',
            __('Uncategorized') => '!'
        );
        try {
            $categories = $GLOBALS['core']->blog->getCategories(
                array('post_type' => 'post')
            );
            while ($categories->fetch()) {
                $categories_combo[] = new formSelectOption(
                    str_repeat('&nbsp;&nbsp;', $categories->level - 1) . '&bull; '. html::escapeHTML($categories->cat_title),
                    '!'.$categories->cat_id
                );
            }
        } catch (Exception $e) {
            return array();
        }

        return $categories_combo;
    }

    /**
     * Custom status combo
     * 
     * @return array Status combo
     */
    protected static function statusCombo()
    {
        return array(
            __('Not changed') => '',
            __('Published') => '!1',
            __('Pending') => '!-2',
            __('Unpublished') => '!0'
        );
    }

    /**
     * Custom selection combo
     * 
     * @return array Selection combo
     */
    protected static function selectedCombo()
    {
        return array(
            __('Not changed') => '',
            __('Selected') => '!1',
            __('Not selected') => '!0'
        );
    }

    /**
     * Custom comment status combo
     * 
     * @return array Comment status combo
     */
    protected static function commentCombo()
    {
        return array(
            __('Not changed') => '',
            __('Opened') => '!1',
            __('Closed') => '!0'
        );
    }

    /**
     * Custom trackback status combo
     * 
     * @return array Trackback status combo
     */
    protected static function trackbackCombo()
    {
        return array(
            __('Not changed') => '',
            __('Opened') => '!1',
            __('Closed') => '!0'
        );
    }
}