<?php declare(strict_types=1);

namespace BitBadger\PDODocument;

use BitBadger\PDODocument\Mapper\ExistsMapper;

/**
 * Functions to determine if documents exist
 */
class Exists
{
    /**
     * Determine if a document exists for the given ID
     *
     * @param string $tableName The name of the table in which document existence should be determined
     * @param mixed $docId The ID of the document whose existence should be determined
     * @return bool True if the document exists, false if not
     * @throws DocumentException If any is encountered
     */
    public static function byId(string $tableName, mixed $docId): bool
    {
        return Custom::scalar(Query\Exists::byId($tableName, $docId), Parameters::id($docId), new ExistsMapper());
    }

    /**
     * Determine if a document exists using a comparison on JSON fields
     *
     * @param string $tableName The name of the table in which document existence should be determined
     * @param Field[] $fields The field comparison to match
     * @param FieldMatch|null $match How to handle multiple conditions (optional; defaults to All)
     * @return bool True if any documents match the field comparison, false if not
     * @throws DocumentException If any is encountered
     */
    public static function byFields(string $tableName, array $fields, ?FieldMatch $match = null): bool
    {
        $namedFields = Parameters::nameFields($fields);
        return Custom::scalar(Query\Exists::byFields($tableName, $namedFields, $match),
            Parameters::addFields($namedFields, []), new ExistsMapper());
    }

    /**
     * Determine if documents exist by a JSON containment query (`@>`; PostgreSQL only)
     *
     * @param string $tableName The name of the table in which document existence should be determined
     * @param array|object $criteria The criteria for the JSON containment query
     * @return bool True if any documents match the JSON containment query, false if not
     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
     */
    public static function byContains(string $tableName, array|object $criteria): bool
    {
        return Custom::scalar(Query\Exists::byContains($tableName), Parameters::json(':criteria', $criteria),
            new ExistsMapper());
    }

    /**
     * Determine if documents exist by a JSON Path match query (`@?`; PostgreSQL only)
     *
     * @param string $tableName The name of the table in which document existence should be determined
     * @param string $path The JSON Path match string
     * @return bool True if any documents match the JSON Path string, false if not
     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
     */
    public static function byJsonPath(string $tableName, string $path): bool
    {
        return Custom::scalar(Query\Exists::byJsonPath($tableName), [':path' => $path], new ExistsMapper());
    }
}