<?php

namespace Appwrite\Utopia\Database\Validator\Queries;

use Utopia\Config\Config;
use Utopia\Database\Database;
use Utopia\Database\Document;
use Utopia\Database\Validator\Queries;
use Utopia\Database\Validator\Query\Cursor;
use Utopia\Database\Validator\Query\Filter;
use Utopia\Database\Validator\Query\Limit;
use Utopia\Database\Validator\Query\Offset;
use Utopia\Database\Validator\Query\Order;

class Base extends Queries
{
    /**
     * Expression constructor
     *
     * @param string $collection
     * @param string[] $allowedAttributes
     * @throws \Exception
     */
    public function __construct(string $collection, array $allowedAttributes)
    {
        $config = Config::getParam('collections', []);

        $collections = array_merge(
            $config['projects'],
            $config['buckets'],
            $config['databases'],
            $config['console'],
            $config['logs']
        );

        $collection = $collections[$collection];
        // array for constant lookup time
        $allowedAttributesLookup = [];
        foreach ($allowedAttributes as $attribute) {
            $allowedAttributesLookup[$attribute] = true;
        }

        $attributes = [];
        foreach ($collection['attributes'] as $attribute) {
            $key = $attribute['$id'];

            if (!isset($allowedAttributesLookup[$key])) {
                continue;
            }

            $attributes[] = new Document([
                'key' => $key,
                'type' => $attribute['type'],
                'array' => $attribute['array'],
            ]);
        }

        $attributes[] = new Document([
            'key' => '$id',
            'type' => Database::VAR_STRING,
            'array' => false,
        ]);
        $attributes[] = new Document([
            'key' => '$createdAt',
            'type' => Database::VAR_DATETIME,
            'array' => false,
        ]);
        $attributes[] = new Document([
            'key' => '$updatedAt',
            'type' => Database::VAR_DATETIME,
            'array' => false,
        ]);

        $validators = [
            new Limit(),
            new Offset(),
            new Cursor(),
            new Filter($attributes, APP_DATABASE_QUERY_MAX_VALUES),
            new Order($attributes),
        ];

        parent::__construct($validators);
    }
}