<?php

namespace bff\base;

use Closure;
use bff\traits\Defaults;
use bff\traits\Macroable;
use bff\contracts\Provider;
use bff\contracts\SmsProvider;
use bff\contracts\MapsProvider;
use bff\contracts\PaymentProvider;
use bff\contracts\GeocodeProvider;
use bff\contracts\IpLocationProvider;
use bff\contracts\TranslationProvider;
use bff\contracts\CurrencyRatesProvider;
use bff\currency\Rates as CurrencyRates;

/**
 * Providers manager
 * Facade: @see \bff\facades\Providers
 * @copyright Tamaranga
 */
class Providers
{
    use Defaults;
    use Macroable;

    protected const PRIORITY_LIMIT = 10;

    /**
     * @var \Application
     */
    protected $app;

    /**
     * Inited providers
     * @var array
     */
    protected $inited = [];

    /**
     * Registered providers
     * @var array
     */
    protected $registered = [];

    public function __construct(\bff\contracts\Application $app)
    {
        $this->app = $app;
    }

    /**
     * Register known providers by contract
     * @param object $provider
     * @param int|null $priority
     * @return void
     */
    public function registerByContract($provider, ?int $priority = null)
    {
        if ($provider instanceof Provider) {
            if ($provider instanceof PaymentProvider) {
                $this->app->hooks()->billsPaymentProviderRegister($provider, $priority);
            } elseif ($provider instanceof SmsProvider) {
                $this->app->hooks()->sendmailSmsProviderRegister($provider, $priority);
            } elseif ($provider instanceof TranslationProvider) {
                $this->app->hooks()->localeTraslationProviderRegister($provider, $priority);
            } elseif ($provider instanceof CurrencyRatesProvider) {
                CurrencyRates::registerProvider($provider, $priority);
            } elseif ($provider instanceof IpLocationProvider) {
                $this->app->hooks()->ipLocationProviderRegister($provider, $priority);
            } elseif ($provider instanceof GeocodeProvider) {
                $this->app->hooks()->geoGeocodeProviderRegister($provider, $priority);
            } elseif ($provider instanceof MapsProvider) {
                $this->app->hooks()->geoMapsProviderRegister($provider, $priority);
            }
        }
    }

    /**
     * Register provider
     * @param string $groupKey
     * @param Provider|Closure|mixed $provider
     * @param int|null $priority
     * @return void
     */
    public function register(string $groupKey, $provider, ?int $priority = null)
    {
        if (is_null($priority) || $priority < 0) {
            $priority = 5;
        }
        $this->registered[$groupKey][$priority][] = $provider;
    }

    /**
     * Init providers list
     * @param string $groupKey
     * @param string $contract
     * @param string|null $providerKey
     * @param array $opts
     * @return array | Provider[]
     */
    public function get(string $groupKey, string $contract, ?string $providerKey = null, array $opts = [])
    {
        $opts = $this->defaults($opts, [
            'once' => true,
            'onInit' => false,
        ]);

        if (! array_key_exists($groupKey, $this->inited) || ! $opts['once']) {
            $this->inited[$groupKey] = [];
            $keyMethod = $opts['keyMethod'] ?? 'providerKey';
            if (! empty($this->registered[$groupKey])) {
                for ($p = 0; $p <= static::PRIORITY_LIMIT; $p++) {
                    if (! empty($this->registered[$groupKey][$p])) {
                        foreach ($this->registered[$groupKey][$p] as $provider) {
                            if ($provider instanceof Closure) {
                                $provider = $provider($opts);
                            }
                            if (is_string($provider) && class_exists($provider)) {
                                $provider = new $provider();
                            }
                            if ($provider instanceof $contract) {
                                $this->inited[$groupKey][$provider->$keyMethod()] = $provider;
                            }
                        }
                    }
                }
            }
            if ($opts['onInit'] instanceof Closure) {
                $opts['onInit']($this->inited[$groupKey]);
            }
        }

        if ($providerKey) {
            return $this->inited[$groupKey][$providerKey] ?? null;
        }

        return $this->inited[$groupKey];
    }
}