<?php

declare(strict_types=1);

namespace App\Framework\Database;

use App\Framework\Database\Exception\DatabaseException;
use App\Framework\Database\ValueObjects\SqlQuery;

final class PdoConnection implements ConnectionInterface
{
    private \PDO $pdo;

    public function __construct(\PDO $pdo)
    {
        $this->pdo = $pdo;

        # SOllte bereits aus den Options kommen!
        #$this->pdo->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
        #$this->pdo->setAttribute(\PDO::ATTR_DEFAULT_FETCH_MODE, \PDO::FETCH_ASSOC);
    }

    public function execute(SqlQuery $query): int
    {
        try {
            $statement = $this->pdo->prepare($query->sql);
            $statement->execute($query->parameters->toPdoArray());

            return $statement->rowCount();
        } catch (\PDOException $e) {
            throw DatabaseException::simple("Failed to execute query: {$e->getMessage()}", $e);
        }
    }

    public function query(SqlQuery $query): ResultInterface
    {
        try {
            $statement = $this->pdo->prepare($query->sql);
            $statement->execute($query->parameters->toPdoArray());

            return new PdoResult($statement);
        } catch (\PDOException $e) {
            $debug = $query->toDebugString();

            throw DatabaseException::simple("Failed to execute query: {$e->getMessage()} --- Debug: {$debug}", $e);
        }
    }

    public function queryOne(SqlQuery $query): ?array
    {
        $result = $this->query($query);

        return $result->fetch();
    }

    public function queryColumn(SqlQuery $query): array
    {
        $result = $this->query($query);

        return $result->fetchColumn();
    }

    public function queryScalar(SqlQuery $query): mixed
    {
        $result = $this->query($query);

        return $result->fetchScalar();
    }

    public function beginTransaction(): void
    {
        try {
            $this->pdo->beginTransaction();
        } catch (\PDOException $e) {
            throw DatabaseException::simple("Failed to begin transaction: {$e->getMessage()}", $e);
        }
    }

    public function commit(): void
    {
        try {
            $this->pdo->commit();
        } catch (\PDOException $e) {
            throw DatabaseException::simple("Failed to commit transaction: {$e->getMessage()}", $e);
        }
    }

    public function rollback(): void
    {
        try {
            $this->pdo->rollBack();
        } catch (\PDOException $e) {
            throw DatabaseException::simple("Failed to rollback transaction: {$e->getMessage()}", $e);
        }
    }

    public function inTransaction(): bool
    {
        return $this->pdo->inTransaction();
    }

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

    public function getPdo(): \PDO
    {
        return $this->pdo;
    }
}