<?php

namespace IQBall\Core;

use PDO;

class Connection {
    private PDO $pdo;

    /**
     * @param PDO $pdo
     */
    public function __construct(PDO $pdo) {
        $this->pdo = $pdo;
    }

    public function lastInsertId(): string {
        return $this->pdo->lastInsertId();
    }

    /**
     * execute a request
     * @param string $query
     * @param array<string, array<mixed, int>> $args
     * @return void
     */
    public function exec(string $query, array $args) {
        $stmnt = $this->prep($query, $args);
        $stmnt->execute();
    }

    /**
     * Execute a request, and return the returned rows
     * @param string $query the SQL request
     * @param array<string, array<mixed, int>> $args an array containing the arguments label, value and type: ex: `[":label" => [$value, PDO::PARAM_TYPE]`
     * @return array<string, mixed>[] the returned rows of the request
     */
    public function fetch(string $query, array $args): array {
        $stmnt = $this->prep($query, $args);
        $stmnt->execute();
        return $stmnt->fetchAll(PDO::FETCH_ASSOC);
    }

    /**
     * @param string $query
     * @param array<string, array<mixed, int>> $args
     * @return \PDOStatement
     */
    private function prep(string $query, array $args): \PDOStatement {
        $stmnt = $this->pdo->prepare($query);
        foreach ($args as $name => $value) {
            $stmnt->bindValue($name, $value[0], $value[1]);
        }
        return $stmnt;
    }

    public function prepare(string $query): \PDOStatement {
        return $this->pdo->prepare($query);
    }

}