<?php

namespace KTXC\Db;

use MongoDB\Database as MongoDatabase;

/**
 * Wrapper for MongoDB\Database
 * Provides abstraction layer for MongoDB database operations
 */
class Database
{
    private MongoDatabase $database;

    public function __construct(MongoDatabase $database)
    {
        $this->database = $database;
    }

    /**
     * Select a collection
     * 
     * @param string $collectionName Collection name
     * @param array $options Collection options
     * @return Collection
     */
    public function selectCollection(string $collectionName, array $options = []): Collection
    {
        $mongoCollection = $this->database->selectCollection($collectionName, $options);
        return new Collection($mongoCollection);
    }

    /**
     * List collections
     */
    public function listCollections(array $options = []): array
    {
        $collections = [];
        foreach ($this->database->listCollections($options) as $collectionInfo) {
            $collections[] = $collectionInfo;
        }
        return $collections;
    }

    /**
     * Drop the database
     */
    public function drop(array $options = []): array|object|null
    {
        return $this->database->drop($options);
    }

    /**
     * Get database name
     */
    public function getDatabaseName(): string
    {
        return $this->database->getDatabaseName();
    }

    /**
     * Create a collection
     */
    public function createCollection(string $collectionName, array $options = []): Collection|null
    {
        $mongoCollection = $this->database->createCollection($collectionName, $options);
        return $mongoCollection ? new Collection($mongoCollection) : null;
    }

    /**
     * Drop a collection
     */
    public function dropCollection(string $collectionName, array $options = []): array|object|null
    {
        return $this->database->dropCollection($collectionName, $options);
    }

    /**
     * Execute a database command
     */
    public function command(array|object $command, array $options = []): Cursor
    {
        /** @var \Iterator $cursor */
        $cursor = $this->database->command($command, $options);
        return new Cursor($cursor);
    }

    /**
     * Get the underlying MongoDB Database
     * Use sparingly - prefer using wrapper methods
     */
    public function getMongoDatabase(): MongoDatabase
    {
        return $this->database;
    }

    /**
     * Magic method to access collection as property
     */
    public function __get(string $collectionName): Collection
    {
        return $this->selectCollection($collectionName);
    }
}