<?php

namespace NinjaTables\Database\Migrations;

use NinjaTables\App\Models\Import;

abstract class NinjaTablesMigration
{

    private static $tableName = 'ninja_table_items';

    protected $cpt_name = 'ninja-table';

    abstract function getTables();

    abstract function migrateTable($tableId);

    /**
     * Create  a table post type
     *
     * @param string $title
     * @param string $description
     *
     * @return int|WP_Error
     */
    public function createTable($title = '', $description = '')
    {
        if ( ! $title) {
            $title = __('Temporary table name', 'ninja-tables');
        }
        if ( ! $description) {
            $description = __('Temporary table description',
                'ninja-tables');
        }

        return wp_insert_post(array(
            'post_title'   => $title,
            'post_content' => $description,
            'post_type'    => $this->cpt_name,
            'post_status'  => 'publish'
        ));
    }

    public function addRows($tableId, $rows)
    {
        global $wpdb;
        $table_name = $wpdb->prefix . static::$tableName;
        $time       = current_time('mysql');
        foreach ($rows as $row) {
            $data = array(
                'table_id'   => $tableId,
                'attribute'  => 'value',
                'value'      => json_encode($row),
                'created_at' => $time,
                'updated_at' => $time
            );
            $wpdb->insert($table_name, $data, false);
        }
    }

    public function initTableConfiguration($tableId, $headers)
    {
        // ninja_table_columns
        $ninjaTableColumns = array();
        foreach ($headers as $key => $name) {
            $ninjaTableColumns[] = array(
                'key'         => $key,
                'name'        => $name,
                'breakpoints' => '',
                'data_type'   => 'text'
            );
        }
        update_post_meta($tableId, '_ninja_table_columns',
            $ninjaTableColumns);

        // ninja_table_settings
        $ninjaTableSettings = ninja_table_get_table_settings($tableId,
            'admin');
        update_post_meta($tableId, '_ninja_table_settings',
            $ninjaTableSettings);
        ninjaTablesClearTableDataCache($tableId);
    }


    /**
     * Create Table Header as an array where array keys will be sanitized and formatted column keys
     *
     * @param $header array
     *
     * @return array
     */
    public function formatHeader($header)
    {
        $data           = array();
        $column_counter = 1;
        foreach ($header as $item) {
            $item = trim(strip_tags($item));

            // We'll slugify only if item is printable characters.
            // Otherwise we'll generate custom key for the item.
            // Printable chars as in ASCII printable chars.
            // Ref: http://www.catonmat.net/blog/my-favorite-regex/

            $key = preg_replace('/[^A-Za-z0-9]+/', '', $item);

            $key = sanitize_title($key, 'ninja_column_' . $column_counter, 'display');

            $counter = 1;
            while (isset($data[$key])) {
                $key .= '_' . $counter;
                $counter++;
            }
            $data[$key] = $item;

            $column_counter++;
        }

        return $data;
    }

    /**
     * Prepare the table Rows combining with $headerKeys
     *
     * @param $headerKeys array
     * @param $rows array
     *
     * @return array
     */
    public function prepareTableRows($headerKeys, $rows)
    {
        $formattedRows = array();
        foreach ($rows as $row) {
            if (count($headerKeys) == count($row)) {
                $formattedRows[] = array_combine($headerKeys, $row);
            }
        }

        return $formattedRows;
    }
}