<?php

namespace SparkPlug\Com\Noccy\Pdo\Reflection\Reflector;

use PDO;
use SparkPlug\Com\Noccy\Pdo\PdoResource;
use SparkPlug\Com\Noccy\Pdo\Reflection\ColumnReflectionInterface;
use SparkPlug\Com\Noccy\Pdo\Reflection\TableReflectionInterface;

class MysqlTableReflection implements TableReflectionInterface
{
    private PDO $pdo;

    private string $table;

    private array $columns = [];

    public function __construct(PdoResource $db, string $table)
    {
        $pdo = $db->getPDO();

        $columnQuery = $pdo->prepare('show fields from '.$table);
        $columnQuery->execute();
        $columns = $columnQuery->fetchAll(PDO::FETCH_ASSOC);

        foreach ($columns as $column) {
            $name = $column['Field'];
            $this->columns[$name] = new MysqlColumnReflection($db, $column);
        }

        /*

        SELECT table_schema, table_name, column_name, ordinal_position, data_type, 
            numeric_precision, column_type, column_default, is_nullable, column_comment 
            FROM information_schema.columns 
            WHERE (table_schema='schema_name' and table_name = 'table_name')
            order by ordinal_position;

            OR

            show fields from 'table_name' 
        */
    }

    public function getAllColumns(): array
    {
        return $this->columns;
    }

    public function getColumn(string $name): ?ColumnReflectionInterface
    {
        return $this->columns[$name] ?? null;
    }

}