<?php
if (!class_exists('WP_List_Table') ) {
    include_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
}

class Hfcm_Snippets_List extends WP_List_Table
{

    /**
     * Class constructor
     */
    public function __construct()
    {

        parent::__construct(
            array(
                'singular' => esc_html__('Snippet', 'header-footer-code-manager'),
                'plural'   => esc_html__('Snippets', 'header-footer-code-manager'),
                'ajax'     => false,
            )
        );
    }

    /**
     * Retrieve snippets data from the database
     *
     * @param int $per_page
     * @param int $page_number
     *
     * @return mixed
     */
    public static function get_snippets( $per_page = 20, $page_number = 1, $customvar = 'all' )
    {

        global $wpdb;
        $table_name  = "{$wpdb->prefix}hfcm_scripts";
        $page_number = absint($page_number);
        $per_page    = absint($per_page);
        $customvar   = sanitize_text_field($customvar);
        $orderby     = 'script_id';
        $order       = 'ASC';

        if (!empty($_GET['orderby']) ) {
            $orderby = sanitize_sql_orderby($_GET['orderby']);
            if (empty($orderby) || !in_array($orderby, array( 'script_id', 'name', 'location' )) ) {
                $orderby = 'script_id';
            }
        }
        if (!empty($_GET['order']) ) {
            $order = strtolower(sanitize_sql_orderby($_GET['order']));
            if (empty($order) || !in_array($order, array( 'desc', 'asc' )) ) {
                $order = 'ASC';
            }
        }

        $sql              = "SELECT * FROM `{$table_name}` WHERE 1";
        $placeholder_args = array();
        if (in_array($customvar, array( 'inactive', 'active' )) ) {
            $sql                .= " AND status = '%s'";
            $placeholder_args[] = $customvar;
        }
        if (!empty($_POST['snippet_type']) ) {
            $snippet_type = addslashes(sanitize_text_field($_POST['snippet_type']));
            if (in_array($snippet_type, array( 'html', 'css', 'js' )) ) {
                $sql                .= " AND snippet_type = %s";
                $placeholder_args[] = $snippet_type;
            }
        }
        if (!empty($_POST['s']) ) {
            $search_query       = addslashes(sanitize_text_field($_POST['s']));
            $sql                .= " AND name LIKE %s";
            $placeholder_args[] = '%'.$search_query.'%';
        }

        $sql                .= ' ORDER BY %s %s LIMIT %d OFFSET %d';
        $placeholder_args[] = $orderby;
        $placeholder_args[] = $order;
        $placeholder_args[] = $per_page;
        $placeholder_args[] = ($page_number - 1) * $per_page;

        if (!empty($placeholder_args) ) {
            $sql = $wpdb->prepare($sql, $placeholder_args);
        }
        $result = $wpdb->get_results(
            $sql, 'ARRAY_A'
        );

        return $result;
    }

    /**
     * Delete a snipppet record.
     *
     * @param int $id snippet ID
     */
    public static function delete_snippet( $id )
    {
        $id = (int) $id;
        if (empty($id) ) {
            return;
        }

        global $wpdb;
        $table_name = "{$wpdb->prefix}hfcm_scripts";

        $wpdb->delete(
            $table_name, array( 'script_id' => $id ), array( '%d' )
        );
    }

    /**
     * Activate a snipppet record.
     *
     * @param int $id snippet ID
     */
    public static function activate_snippet( $id )
    {

        $id = (int) $id;
        if (empty($id) ) {
            return;
        }

        global $wpdb;
        $table_name = "{$wpdb->prefix}hfcm_scripts";

        $wpdb->update(
            $table_name, array(
            'status' => 'active',
            ), array( 'script_id' => $id ), array( '%s' ), array( '%d' )
        );
    }

    /**
     * Deactivate a snipppet record.
     *
     * @param int $id snippet ID
     */
    public static function deactivate_snippet( $id )
    {

        $id = (int) $id;
        if (empty($id) ) {
            return;
        }

        global $wpdb;
        $table_name = "{$wpdb->prefix}hfcm_scripts";

        $wpdb->update(
            $table_name, array(
            'status' => 'inactive',
            ), array( 'script_id' => $id ), array( '%s' ), array( '%d' )
        );
    }

    /**
     * Returns the count of records in the database.
     *
     * @return null|string
     */
    public static function record_count( $customvar = 'all' )
    {

        global $wpdb;
        $table_name       = "{$wpdb->prefix}hfcm_scripts";
        $sql              = "SELECT COUNT(*) FROM `{$table_name}`";
        $placeholder_args = [];

        $customvar = sanitize_text_field($customvar);

        if (in_array($customvar, array( 'inactive', 'active' )) ) {
            $sql                .= " WHERE status = %s";
            $placeholder_args[] = $customvar;
        }
        if(!empty($placeholder_args)) {
            $sql = $wpdb->prepare($sql, $placeholder_args);
        }

        return $wpdb->get_var($sql);
    }

    /**
     * Text displayed when no snippet data is available
     */
    public function no_items()
    {
        esc_html_e('No Snippets available.', 'header-footer-code-manager');
    }

    /**
     * Render a column when no column specific method exist.
     *
     * @param array  $item
     * @param string $column_name
     *
     * @return mixed
     */
    public function column_default( $item, $column_name )
    {

        switch ( $column_name ) {
        case 'name':
            return esc_html($item[ $column_name ]);

        case 'display_on':
            $nnr_hfcm_display_array = array(
                'All'            => esc_html__('Site Wide', 'header-footer-code-manager'),
                's_posts'        => esc_html__('Specific Posts', 'header-footer-code-manager'),
                's_pages'        => esc_html__('Specific Pages', 'header-footer-code-manager'),
                's_categories'   => esc_html__('Specific Categories', 'header-footer-code-manager'),
                's_custom_posts' => esc_html__('Specific Custom Post Types', 'header-footer-code-manager'),
                's_tags'         => esc_html__('Specific Tags', 'header-footer-code-manager'),
                's_is_home'      => esc_html__('Home Page', 'header-footer-code-manager'),
                's_is_search'    => esc_html__('Search Page', 'header-footer-code-manager'),
                's_is_archive'   => esc_html__('Archive Page', 'header-footer-code-manager'),
                'latest_posts'   => esc_html__('Latest Posts', 'header-footer-code-manager'),
                'manual'         => esc_html__('Shortcode Only', 'header-footer-code-manager'),
            );

            if ('s_posts' === $item[ $column_name ] ) {

                $empty   = 1;
                $s_posts = json_decode($item['s_posts']);

                foreach ( $s_posts as $id ) {
                    $id = absint($id);
                    if ('publish' === get_post_status($id) ) {
                        $empty = 0;
                        break;
                    }
                }
                if ($empty ) {
                    return '<span class="hfcm-red">' . esc_html__('No post selected', 'header-footer-code-manager') . '</span>';
                }
            }

            return esc_html($nnr_hfcm_display_array[ $item[ $column_name ] ]);

        case 'location':

            if (!$item[ $column_name ] ) {
                return esc_html__('N/A', 'header-footer-code-manager');
            }

            $nnr_hfcm_locations = array(
                'header'         => esc_html__('Header', 'header-footer-code-manager'),
                'before_content' => esc_html__('Before Content', 'header-footer-code-manager'),
                'after_content'  => esc_html__('After Content', 'header-footer-code-manager'),
                'footer'         => esc_html__('Footer', 'header-footer-code-manager'),
            );
            return esc_html($nnr_hfcm_locations[ $item[ $column_name ] ]);

        case 'device_type':

            if ('both' === $item[ $column_name ] ) {
                return esc_html__('Show on All Devices', 'header-footer-code-manager');
            } elseif ('mobile' === $item[ $column_name ] ) {
                return esc_html__('Only Mobile Devices', 'header-footer-code-manager');
            } elseif ('desktop' === $item[ $column_name ] ) {
                return esc_html__('Only Desktop', 'header-footer-code-manager');
            } else {
                return esc_html($item[ $column_name ]);
            }
        case 'snippet_type':
            $snippet_types = array(
                'html' => esc_html__('HTML', 'header-footer-code-manager'),
                'css'  => esc_html__('CSS', 'header-footer-code-manager'),
                'js'   => esc_html__('Javascript', 'header-footer-code-manager')
            );
            return esc_html($snippet_types[ $item[ $column_name ] ]);

        case 'status':

            if ('inactive' === $item[ $column_name ] ) {
                return '<div class="nnr-switch">
                        <label for="nnr-round-toggle' . esc_attr($item['script_id']) . '">OFF</label>
                        <input id="nnr-round-toggle' . esc_attr($item['script_id']) . '" class="round-toggle round-toggle-round-flat" type="checkbox" data-id="' . esc_attr($item['script_id']) . '" />
                        <label for="nnr-round-toggle' . esc_attr($item['script_id']) . '"></label>
                        <label for="nnr-round-toggle' . esc_attr($item['script_id']) . '">ON</label>
                    </div>
                    ';
            } elseif ('active' === $item[ $column_name ] ) {
                return '<div class="nnr-switch">
                        <label for="nnr-round-toggle' . esc_attr($item['script_id']) . '">OFF</label>
                        <input id="nnr-round-toggle' . esc_attr($item['script_id']) . '" class="round-toggle round-toggle-round-flat" type="checkbox" data-id="' . esc_attr($item['script_id']) . '" checked="checked" />
                        <label for="nnr-round-toggle' . esc_attr($item['script_id']) . '"></label>
                        <label for="nnr-round-toggle' . esc_attr($item['script_id']) . '">ON</label>
                    </div>
                    ';
            } else {
                return esc_html($item[ $column_name ]);
            }

        case 'script_id':
            return esc_html($item[ $column_name ]);

        case 'shortcode':
            return '[hfcm id="' . absint($item['script_id']) . '"]';

        default:
            return print_r($item, true); // Show the whole array for troubleshooting purposes
        }
    }

    /**
     * Render the bulk edit checkbox
     *
     * @param array $item
     *
     * @return string
     */
    function column_cb( $item )
    {
        return sprintf(
            '<input type="checkbox" name="snippets[]" value="%s" />', $item['script_id']
        );
    }

    /**
     * Method for name column
     *
     * @param array $item an array of DB data
     *
     * @return string
     */
    function column_name( $item )
    {

        $delete_nonce = wp_create_nonce('hfcm_delete_snippet');
        $edit_nonce   = wp_create_nonce('hfcm_edit_snippet');

        $title = '<strong>' . esc_html($item['name']) . '</strong>';

        $nnr_current_screen = get_current_screen();

        if (!empty($nnr_current_screen->parent_base) ) {
            $page = $nnr_current_screen->parent_base;
        } else {
            $page = sanitize_text_field($_GET['page']);
        }
        $actions = array(
            'edit'   => sprintf('<a href="?page=%s&action=%s&id=%s&_wpnonce=%s">' . esc_html__('Edit', 'header-footer-code-manager') . '</a>', esc_attr('hfcm-update'), 'edit', absint($item['script_id']), $edit_nonce),
            'copy'   => sprintf('<a href="javascript:void(0);" data-shortcode=\'[hfcm id="%s"]\'  class="hfcm_copy_shortcode" id="hfcm_copy_shortcode_%s">' . esc_html__('Copy Shortcode', 'header-footer-code-manager') . '</a>', absint($item['script_id']), absint($item['script_id'])),
            'delete' => sprintf('<a href="?page=%s&action=%s&snippet=%s&_wpnonce=%s">' . esc_html__('Delete', 'header-footer-code-manager') . '</a>', $page, 'delete', absint($item['script_id']), $delete_nonce),
        );

        return $title . $this->row_actions($actions);
    }

    /**
     *  Associative array of columns
     *
     * @return array
     */
    function get_columns()
    {
        $columns = array(
            'cb'           => '<input type="checkbox" />',
            'script_id'    => esc_html__('ID', 'header-footer-code-manager'),
            'status'       => esc_html__('Status', 'header-footer-code-manager'),
            'name'         => esc_html__('Snippet Name', 'header-footer-code-manager'),
            'display_on'   => esc_html__('Display On', 'header-footer-code-manager'),
            'location'     => esc_html__('Location', 'header-footer-code-manager'),
            'snippet_type' => esc_html__('Snippet Type', 'header-footer-code-manager'),
            'device_type'  => esc_html__('Devices', 'header-footer-code-manager'),
            'shortcode'    => esc_html__('Shortcode', 'header-footer-code-manager'),
        );

        return $columns;
    }

    /**
     * Columns to make sortable.
     *
     * @return array
     */
    public function get_sortable_columns()
    {

        return array(
            'name'      => array( 'name', true ),
            'location'  => array( 'location', true ),
            'script_id' => array( 'script_id', false ),
        );
    }

    /**
     * Returns an associative array containing the bulk action
     *
     * @return array
     */
    public function get_bulk_actions()
    {

        return array(
            'bulk-activate'   => esc_html__('Activate', 'header-footer-code-manager'),
            'bulk-deactivate' => esc_html__('Deactivate', 'header-footer-code-manager'),
            'bulk-delete'     => esc_html__('Remove', 'header-footer-code-manager'),
        );
    }

    /**
     * Add filters and extra actions above and below the table
     *
     * @param string $which Are the actions displayed on the table top or bottom
     */
    public function extra_tablenav( $which )
    {
        if ('top' === $which ) {
            $query        = isset($_POST['snippet_type']) ? sanitize_text_field($_POST['snippet_type']) : '';
            $snippet_type = array(
                'html' => esc_html__('HTML', 'header-footer-code-manager'),
                'css'  => esc_html__('CSS', 'header-footer-code-manager'),
                'js'   => esc_html__('Javascript', 'header-footer-code-manager')
            );

            echo '<div class="alignleft actions">';
            echo '<select name="snippet_type">';
            echo '<option value="">' . esc_html__('All Snippet Types', 'header-footer-code-manager') . '</option>';

            foreach ( $snippet_type as $key_type => $type ) {
                if ($key_type == $query ) {
                    echo '<option value="' . esc_attr($key_type) . '" selected>' . esc_html($type) . '</option>';
                } else {
                    echo '<option value="' . esc_attr($key_type) . '">' . esc_html($type) . '</option>';
                }
            }

            echo '</select>';
            submit_button(__('Filter', 'header-footer-code-manager'), 'button', 'filter_action', false);
            echo '</div>';
        }

        echo '<div class="alignleft actions">';


        echo '</div>';
    }

    /**
     * Handles data query and filter, sorting, and pagination.
     */
    public function prepare_items()
    {

        $columns  = $this->get_columns();
        $hidden   = array();
        $sortable = $this->get_sortable_columns();

        // Retrieve $customvar for use in query to get items.
        $customvar = 'all';
        if (!empty($_GET['customvar']) ) {
            $customvar = sanitize_text_field($_GET['customvar']);
            if (empty($customvar) || !in_array($customvar, [ 'inactive', 'active', 'all' ]) ) {
                $customvar = 'all';
            }
        }
        $this->_column_headers = array( $columns, $hidden, $sortable );

        /**
         * Process bulk action
         */
        $this->process_bulk_action();
        $this->views();
        $per_page     = $this->get_items_per_page('snippets_per_page', 20);
        $current_page = $this->get_pagenum();
        $total_items  = self::record_count();

        $this->set_pagination_args(
            array(
                'total_items' => $total_items,
                'per_page'    => $per_page,
            )
        );

        $this->items = self::get_snippets($per_page, $current_page, $customvar);
    }

    public function get_views()
    {
        $views   = array();
        $current = 'all';
        if (!empty($_GET['customvar']) ) {
            $current = sanitize_text_field($_GET['customvar']);
        }

        //All link
        $class        = 'all' === $current ? 'current' : '';
        $all_url      = remove_query_arg('customvar');
        $views['all'] = '<a href="' . esc_html($all_url) . '" class="' . esc_html($class) . '">' . esc_html__('All', 'header-footer-code-manager') . ' (' . esc_html__($this->record_count()) . ')</a>';

        //Foo link
        $foo_url         = add_query_arg('customvar', 'active');
        $class           = ('active' === $current ? 'current' : '');
        $views['active'] = '<a href="' . esc_html($foo_url) . '" class="' . esc_html($class) . '">' . esc_html__('Active', 'header-footer-code-manager') . ' (' . esc_html__($this->record_count('active')) . ')</a>';

        //Bar link
        $bar_url           = add_query_arg('customvar', 'inactive');
        $class             = ('inactive' === $current ? 'current' : '');
        $views['inactive'] = '<a href="' . esc_html($bar_url) . '" class="' . esc_html($class) . '">' . esc_html__('Inactive', 'header-footer-code-manager') . ' (' . esc_html__($this->record_count('inactive')) . ')</a>';

        return $views;
    }

    public function process_bulk_action()
    {
        //Detect when a bulk action is being triggered...
        if ('delete' === $this->current_action() ) {

            // In our file that handles the request, verify the nonce.
            $nonce = sanitize_text_field($_REQUEST['_wpnonce']);

            if (!wp_verify_nonce($nonce, 'hfcm_delete_snippet') ) {
                die('Go get a life script kiddies');
            } else {
                if (!empty($_GET['snippet']) ) {
                    $snippet_id = absint($_GET['snippet']);
                    if (!empty($snippet_id) ) {
                        self::delete_snippet($snippet_id);
                    }
                }

                NNR_HFCM::hfcm_redirect(admin_url('admin.php?page=hfcm-list'));
                return;
            }
        }

        // If the delete bulk action is triggered
        if ((isset($_POST['action']) && 'bulk-delete' === $_POST['action'])
            || (isset($_POST['action2']) && 'bulk-delete' === $_POST['action2'])
        ) {
            $delete_ids = $_POST['snippets'];

            // loop over the array of record IDs and delete them
            foreach ( $delete_ids as $id ) {
                $id = absint($id);
                if (!empty($id) && is_int($id) ) {
                    self::delete_snippet($id);
                }
            }

            NNR_HFCM::hfcm_redirect(admin_url('admin.php?page=hfcm-list'));
            return;
        } elseif ((isset($_POST['action']) && 'bulk-activate' === $_POST['action'])
            || (isset($_POST['action2']) && 'bulk-activate' === $_POST['action2'])
        ) {

            $activate_ids = $_POST['snippets'];

            // loop over the array of record IDs and activate them
            foreach ( $activate_ids as $id ) {
                $id = absint($id);
                if (!empty($id) && is_int($id) ) {
                    self::activate_snippet($id);
                }
            }

            NNR_HFCM::hfcm_redirect(admin_url('admin.php?page=hfcm-list'));
            return;
        } elseif ((isset($_POST['action']) && 'bulk-deactivate' === $_POST['action'])
            || (isset($_POST['action2']) && 'bulk-deactivate' === $_POST['action2'])
        ) {

            $delete_ids = $_POST['snippets'];

            // loop over the array of record IDs and deactivate them
            foreach ( $delete_ids as $id ) {
                $id = absint($id);
                if (!empty($id) && is_int($id) ) {
                    self::deactivate_snippet($id);
                }
            }

            NNR_HFCM::hfcm_redirect(admin_url('admin.php?page=hfcm-list'));

            return;
        }
    }

    /**
     * Displays the search box.
     *
     * @param string $text     The 'submit' button label.
     * @param string $input_id ID attribute value for the search input field.
     * @since 3.1.0
     */
    public function search_box( $text, $input_id )
    {
        if (empty($_REQUEST['s']) && !$this->has_items() ) {
            return;
        }
        $input_id = $input_id . '-search-input';
        ?>
        <p class="search-box">
            <label class="screen-reader-text"
                   for="<?php echo esc_attr($input_id); ?>"><?php echo esc_html($text); ?>:</label>
            <input type="search" id="<?php echo esc_attr($input_id); ?>" name="s"
                   value="<?php esc_attr(_admin_search_query()); ?>"/>
            <?php submit_button($text, '', '', false, array( 'id' => 'search-submit' )); ?>
        </p>
        <?php
    }
}