<?php

declare(strict_types=1);

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

namespace KTXM\ChronoProviderLocal\Providers;

use Psr\Container\ContainerInterface;
use KTXF\Chrono\Provider\IProviderBase;
use KTXF\Chrono\Service\IServiceBase;
use KTXF\Resource\Provider\ProviderInterface;
use KTXM\ChronoProviderLocal\Providers\Personal\PersonalService;

class Provider implements IProviderBase, ProviderInterface {

	protected const PROVIDER_ID = 'default';
	protected const PROVIDER_LABEL = 'Default Chrono Provider';
	protected const PROVIDER_DESCRIPTION = 'Provides local calendar/event storage';
	protected const PROVIDER_ICON = 'calendar';

	protected array $providerAbilities = [];
	private ?array $servicesCache = [];

	public function __construct(
		private readonly ContainerInterface $container,
	) {
		$this->providerAbilities = [
			self::CAPABILITY_SERVICE_LIST => true,
			self::CAPABILITY_SERVICE_FETCH => true,
			self::CAPABILITY_SERVICE_EXTANT => true,
		];
	}

	/**
	 * @inheritDoc
	 */
	public function type(): string {
		return ProviderInterface::TYPE_CHRONO;
	}

	/**
	 * @inheritDoc
	 */
	public function identifier(): string {
		return self::PROVIDER_ID;
	}

	/**
	 * @inheritDoc
	 */
	public function description(): string {
		return self::PROVIDER_DESCRIPTION;
	}

	/**
	 * @inheritDoc
	 */
	public function icon(): string {
		return self::PROVIDER_ICON;
	}

	public function jsonSerialize(): mixed {
		return $this->toJson();
	}

	public function toJson(): array {
		return [
			self::JSON_PROPERTY_TYPE => self::JSON_TYPE,
			self::JSON_PROPERTY_ID => self::PROVIDER_ID,
			self::JSON_PROPERTY_LABEL => self::PROVIDER_LABEL,
			self::JSON_PROPERTY_CAPABILITIES => $this->providerAbilities,
		];
	}

	/**
	 * Confirms if specific capability is supported
	 *
	 * @since 1.0.0
	 *
	 * @inheritdoc
	 */
	public function capable(string $value): bool {
		if (isset($this->providerAbilities[$value])) {
			return (bool)$this->providerAbilities[$value];
		}
		return false;
	}

	/**
	 * Lists all supported capabilities
	 *
	 * @since 1.0.0
	 *
	 * @inheritdoc
	 */
	public function capabilities(): array {
		return $this->providerAbilities;
	}

	/**
	 * An arbitrary unique text string identifying this provider
	 *
	 * @since 1.0.0
	 * 
	 * @inheritdoc
	 */
	public function id(): string {
		return self::PROVIDER_ID;
	}

	/**
	 * The localized human friendly name of this provider
	 *
	 * @since 1.0.0
	 *
	 * @inheritdoc
	 */
	public function label(): string {
		return self::PROVIDER_LABEL;
	}

	/**
	 * Retrieve collection of services for a specific user
	 * 
	 * @since 1.0.0
	 *
	 * @inheritdoc
	 */
	public function serviceList(string $tenantId, string $userId, array $filter = []): array {
		// if no filter is provided, return all services
		if ($filter === []) {
			$filter = ['personal'];
		}
		// check if services are cached
		if (in_array('personal', $filter, true) && !isset($this->servicesCache[$userId]['personal'])) {
			$this->servicesCache[$userId]['personal'] = $this->serviceInstancePersonal($tenantId, $userId);
		}
		// return requested services
		return array_intersect_key($this->servicesCache[$userId],array_flip($filter));
	}

	/**
	 * construct service object instance
	 *
	 * @since 1.0.0
	 * 
	 * @return PersonalService blank service instance
	 */
	protected function serviceInstancePersonal(string $tenantId, string $userId): PersonalService {
		$service = $this->container->get(PersonalService::class);
		$service->init($tenantId, $userId);
		return $service;
	}

	/**
	 * Determine if any services are configured for a specific user
	 *
	 * @since 1.0.0
	 * 
	 * @inheritdoc
	 */
	public function serviceExtant(string $tenantId, string $userId, int|string ...$identifiers): array {
		$data = [];
		foreach ($identifiers as $id) {
			$data[$id] = match ($id) {
				'personal' => true,
				default => false,
			};
		}
		return $data;
	}

	/**
	 * Retrieve a service with a specific identifier
	 *
	 * @since 1.0.0
	 *
	 * @inheritdoc
	 */
	public function serviceFetch(string $tenantId, string $userId, string|int $identifier): ?IServiceBase {

		// check if services are cached
		if (isset($this->servicesCache[$userId][$identifier])) {
			return $this->servicesCache[$userId][$identifier];
		}
		// convert to service object
		if ($identifier === 'personal') {
			$this->servicesCache[$userId][$identifier] = $this->serviceInstancePersonal($tenantId, $userId);
		}

		return $this->servicesCache[$userId][$identifier];

	}

}