<?php

declare(strict_types=1);

namespace App\Infrastructure\Music\ValueObjects;

/**
 * Spotify API Credentials Value Object
 *
 * Immutable credentials for Spotify API authentication
 */
final readonly class SpotifyCredentials
{
    public function __construct(
        public string $clientId,
        public string $clientSecret,
        public string $redirectUri
    ) {
        if (empty($this->clientId)) {
            throw new \InvalidArgumentException('Spotify Client ID cannot be empty');
        }

        if (empty($this->clientSecret)) {
            throw new \InvalidArgumentException('Spotify Client Secret cannot be empty');
        }

        if (empty($this->redirectUri) || !filter_var($this->redirectUri, FILTER_VALIDATE_URL)) {
            throw new \InvalidArgumentException('Spotify Redirect URI must be a valid URL');
        }
    }

    public static function fromEnvironment(array $env): self
    {
        return new self(
            clientId: $env['SPOTIFY_CLIENT_ID'] ?? '',
            clientSecret: $env['SPOTIFY_CLIENT_SECRET'] ?? '',
            redirectUri: $env['SPOTIFY_REDIRECT_URI'] ?? ''
        );
    }

    public function toArray(): array
    {
        return [
            'client_id' => $this->clientId,
            'client_secret' => $this->clientSecret,
            'redirect_uri' => $this->redirectUri,
        ];
    }
}