<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace KTXF\Resource\Provider\Node;

use DateTimeImmutable;
use KTXF\Resource\Identifier\CollectionIdentifier;
use KTXF\Resource\Identifier\CollectionIdentifierInterface;
use KTXF\Resource\Identifier\EntityIdentifierInterface;
use KTXF\Resource\Identifier\ResourceIdentifier;
use KTXF\Resource\Identifier\ServiceIdentifier;

/**
 * Abstract Node Base Class
 * 
 * Provides common implementation for all resource nodes
 * 
 * @since 2025.05.01
 */
abstract class NodeBaseAbstract implements NodeBaseInterface {

    /**
     * Internal data storage
     */
    protected string $type = 'resource.node';
    protected array $data = [];

    public function __construct(
        protected readonly string $provider,
        protected readonly string|int $service,
    ) {
        $this->data = [
            static::PROPERTY_TYPE => $this->type,
            static::PROPERTY_PROVIDER => $this->provider,
            static::PROPERTY_SERVICE => $this->service,
            static::PROPERTY_COLLECTION => null,
            static::PROPERTY_IDENTIFIER => null,
            static::PROPERTY_SIGNATURE => null,
            static::PROPERTY_CREATED => null,
            static::PROPERTY_MODIFIED => null,
        ];
    }

    /**
     * @inheritDoc
     */
    public function jsonSerialize(): array {
        $data = $this->data;
        $data['provider'] = new ResourceIdentifier($this->data[static::PROPERTY_PROVIDER]);
        $data['service'] = new ServiceIdentifier($this->data[static::PROPERTY_PROVIDER], $this->data[static::PROPERTY_SERVICE]);
        $data['collection'] = isset($this->data[static::PROPERTY_COLLECTION])
            ? new CollectionIdentifier($this->data[static::PROPERTY_PROVIDER], $this->data[static::PROPERTY_SERVICE], $this->data[static::PROPERTY_COLLECTION])
            : null;
        $data['identifier'] = $this->nodeIdentifier();
        $data[static::PROPERTY_PROPERTIES] = $this->getProperties()->jsonSerialize();
        return $data;
    }

    abstract protected function nodeIdentifier(): CollectionIdentifierInterface|EntityIdentifierInterface|null;

    /**
     * @inheritDoc
     */
    public function type(): string {
        return $this->data[static::PROPERTY_TYPE];
    }

    /**
     * @inheritDoc
     */
    public function urn(): string {
        return (string) $this->nodeIdentifier();
    }

    /**
     * @inheritDoc
     */
    public function provider(): string {
        return $this->data[static::PROPERTY_PROVIDER];
    }

    /**
     * @inheritDoc
     */
    public function service(): string|int {
        return $this->data[static::PROPERTY_SERVICE];
    }

    /**
     * @inheritDoc
     */
    public function collection(): string|int|null {
        return $this->data[static::PROPERTY_COLLECTION] ?? null;
    }

    /**
     * @inheritDoc
     */
    public function identifier(): string|int|null {
        return $this->data[static::PROPERTY_IDENTIFIER] ?? null;
    }

    /**
     * @inheritDoc
     */
    public function signature(): string|null {
        return isset($this->data[static::PROPERTY_SIGNATURE]) 
            ? (string)$this->data[static::PROPERTY_SIGNATURE] 
            : null;
    }

    /**
     * @inheritDoc
     */
    public function created(): DateTimeImmutable|null {
        return isset($this->data[static::PROPERTY_CREATED]) 
            ? new DateTimeImmutable($this->data[static::PROPERTY_CREATED]) 
            : null;
    }

    /**
     * @inheritDoc
     */
    public function modified(): DateTimeImmutable|null {
        return isset($this->data[static::PROPERTY_MODIFIED]) 
            ? new DateTimeImmutable($this->data[static::PROPERTY_MODIFIED]) 
            : null;
    }

    /**
     * @inheritDoc
     */
    abstract public function getProperties(): NodePropertiesBaseInterface;
}