<?php

namespace ByJG\AnyDataset\Db\Helpers;

use ByJG\AnyDataset\Core\Exception\NotAvailableException;
use ByJG\AnyDataset\Db\DbDriverInterface;
use ByJG\AnyDataset\Db\IsolationLevelEnum;

class DbDblibFunctions extends DbBaseFunctions
{
    public function __construct()
    {
        $this->deliFieldLeft = '"';
        $this->deliFieldRight = '"';
        $this->deliTableLeft = '"';
        $this->deliTableRight = '"';
    }

    public function concat(string $str1, ?string $str2 = null): string
    {
        return implode(' + ', func_get_args());
    }

    /**
     * Given a SQL returns it with the proper LIMIT or equivalent method included
     * @param string $sql
     * @param int $start
     * @param int $qty
     * @return string
     * @throws NotAvailableException
     */
    public function limit(string $sql, int $start, int $qty = 50): string
    {
        throw new NotAvailableException("DBLib does not support LIMIT feature.");
    }

    /**
     * Given a SQL returns it with the proper TOP or equivalent method included
     * @param string $sql
     * @param int $qty
     * @return string
     */
    public function top(string $sql, int $qty): string
    {
        if (stripos($sql, ' TOP ') === false) {
            return  preg_replace("/^\\s*(select) /i", "\1 top $qty ", $sql);
        }

        return preg_replace(
            '~(\s[Tt][Oo][Pp])\s.*?\d+\s~',
            '$1 ' . $qty . ' ',
            $sql
        );
    }

    /**
     * Return if the database provider have a top or similar function
     * @return bool
     */
    public function hasTop(): bool
    {
        return true;
    }

    /**
     * Return if the database provider have a limit function
     * @return bool
     */
    public function hasLimit(): bool
    {
        return false;
    }

    /**
     * Format date column in sql string given an input format that understands Y M D
     *
     * @param string $format
     * @param string|null $column
     * @return string
     * @example $db->getDbFunctions()->SQLDate("d/m/Y H:i", "dtcriacao")
     */
    public function sqlDate(string $format, ?string $column = null): string
    {
        if (is_null($column)) {
            $column = "getdate()";
        }

        $pattern = [
            'Y' => "YYYY",
            'y' => "YY",
            'M' => "MM",
            'm' => "M",
            'Q' => "",
            'q' => "",
            'D' => "dd",
            'd' => "dd",
            'h' => "H",
            'H' => "HH",
            'i' => "mm",
            's' => "ss",
            'a' => "",
            'A' => "",
        ];

        $preparedSql = $this->prepareSqlDate($format, $pattern, '');

        return sprintf(
            "FORMAT(%s, '%s')",
            $column,
            implode('', $preparedSql)
        );
    }

    /**
     * @param DbDriverInterface $dbdataset
     * @param string $sql
     * @param array|null $param
     * @return mixed
     */
    public function executeAndGetInsertedId(DbDriverInterface $dbdataset, string $sql, ?array $param = null): mixed
    {
        $insertedId = parent::executeAndGetInsertedId($dbdataset, $sql, $param);
        $iterator = $dbdataset->getIterator("select @@identity id");
        if ($iterator->hasNext()) {
            $singleRow = $iterator->moveNext();
            $insertedId = $singleRow->get("id");
        }

        return $insertedId;
    }

    /**
     * @param string $sql
     * @return string
     * @throws \ByJG\AnyDataset\Core\Exception\NotAvailableException
     */
    public function forUpdate(string $sql): string
    {
        throw new NotAvailableException('FOR UPDATE not available for Mssql/Dblib');
    }

    public function hasForUpdate(): bool
    {
        return false;
    }

    public function getTableMetadata(DbDriverInterface $dbdataset, string $tableName): array
    {
        $sql = "select * from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME = '$tableName'";
        return $this->getTableMetadataFromSql($dbdataset, $sql);
    }

    protected function parseColumnMetadata($metadata)
    {
        $return = [];


        foreach ($metadata as $key => $value) {
            if (!empty($value['character_maximum_length'])) {
                $dataType = strtolower($value['data_type']) . '(' . $value['character_maximum_length'] . ')';
            } else {
                $dataType = strtolower($value['data_type']) . '(' . $value["numeric_precision"] . ',' . $value['numeric_precision_radix'] . ')';
            }

            $return[strtolower($value['column_name'])] = [
                    'name' => $value['column_name'],
                    'dbType' => strtolower($value['data_type']),
                    'required' => $value['is_nullable'] == 'NO',
                    'default' => $value['column_default'],
                ] + $this->parseTypeMetadata($dataType);
        }

        return $return;
    }

    public function getIsolationLevelCommand(?IsolationLevelEnum $isolationLevel = null): string
    {
        return match ($isolationLevel) {
            IsolationLevelEnum::READ_UNCOMMITTED => "SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED",
            IsolationLevelEnum::READ_COMMITTED => "SET TRANSACTION ISOLATION LEVEL READ COMMITTED",
            IsolationLevelEnum::REPEATABLE_READ => "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ",
            IsolationLevelEnum::SERIALIZABLE => "SET TRANSACTION ISOLATION LEVEL SERIALIZABLE",
            default => "",
        };
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzkzNzE1MDI2NDk3MzQ5OSA1Mzk2Nzk4ODkyNTE0MjcwIDMzNDQxOTQxOTg5ODc2NDM=