<?php

declare(strict_types=1);

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

namespace KTXF\Mail\Service;

/**
 * Mail Service Location Implementation
 * 
 * Unified implementation supporting URI-based and socket-based connections.
 * 
 * @since 2025.05.01
 */
class ServiceLocation implements IServiceLocation {

    /**
     * @param string $type Location type (uri, socket-single, socket-split)
     * @param string|null $uri URI for API-based services
     * @param string|null $inboundHost Inbound/primary host
     * @param int|null $inboundPort Inbound/primary port
     * @param string|null $inboundSecurity Inbound security (none, ssl, tls, starttls)
     * @param string|null $outboundHost Outbound host (for split-socket)
     * @param int|null $outboundPort Outbound port (for split-socket)
     * @param string|null $outboundSecurity Outbound security (for split-socket)
     */
    public function __construct(
        private string $type,
        private ?string $uri = null,
        private ?string $inboundHost = null,
        private ?int $inboundPort = null,
        private ?string $inboundSecurity = null,
        private ?string $outboundHost = null,
        private ?int $outboundPort = null,
        private ?string $outboundSecurity = null,
    ) {}

    /**
     * Creates a URI-based location (for API services)
     * 
     * @since 2025.05.01
     * 
     * @param string $uri
     * 
     * @return self
     */
    public static function uri(string $uri): self {
        return new self(self::TYPE_URI, $uri);
    }

    /**
     * Creates a single-socket location (e.g., SMTP only)
     * 
     * @since 2025.05.01
     * 
     * @param string $host
     * @param int $port
     * @param string $security
     * 
     * @return self
     */
    public static function socket(string $host, int $port, string $security = self::SECURITY_TLS): self {
        return new self(
            self::TYPE_SOCKET_SINGLE,
            null,
            $host,
            $port,
            $security
        );
    }

    /**
     * Creates a split-socket location (IMAP + SMTP)
     * 
     * @since 2025.05.01
     * 
     * @param string $inboundHost IMAP host
     * @param int $inboundPort IMAP port
     * @param string $inboundSecurity IMAP security
     * @param string $outboundHost SMTP host
     * @param int $outboundPort SMTP port
     * @param string $outboundSecurity SMTP security
     * 
     * @return self
     */
    public static function splitSocket(
        string $inboundHost,
        int $inboundPort,
        string $inboundSecurity,
        string $outboundHost,
        int $outboundPort,
        string $outboundSecurity
    ): self {
        return new self(
            self::TYPE_SOCKET_SPLIT,
            null,
            $inboundHost,
            $inboundPort,
            $inboundSecurity,
            $outboundHost,
            $outboundPort,
            $outboundSecurity
        );
    }

    /**
     * Creates from array data
     * 
     * @since 2025.05.01
     * 
     * @param array $data
     * 
     * @return self
     */
    public static function fromArray(array $data): self {
        return new self(
            $data['type'] ?? self::TYPE_SOCKET_SINGLE,
            $data['uri'] ?? null,
            $data['inboundHost'] ?? $data['host'] ?? null,
            $data['inboundPort'] ?? $data['port'] ?? null,
            $data['inboundSecurity'] ?? $data['security'] ?? null,
            $data['outboundHost'] ?? null,
            $data['outboundPort'] ?? null,
            $data['outboundSecurity'] ?? null,
        );
    }

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

    /**
     * @inheritDoc
     */
    public function getUri(): ?string {
        return $this->uri;
    }

    /**
     * @inheritDoc
     */
    public function getInboundHost(): ?string {
        return $this->inboundHost;
    }

    /**
     * @inheritDoc
     */
    public function getInboundPort(): ?int {
        return $this->inboundPort;
    }

    /**
     * @inheritDoc
     */
    public function getInboundSecurity(): ?string {
        return $this->inboundSecurity;
    }

    /**
     * @inheritDoc
     */
    public function getOutboundHost(): ?string {
        return $this->outboundHost ?? $this->inboundHost;
    }

    /**
     * @inheritDoc
     */
    public function getOutboundPort(): ?int {
        return $this->outboundPort ?? $this->inboundPort;
    }

    /**
     * @inheritDoc
     */
    public function getOutboundSecurity(): ?string {
        return $this->outboundSecurity ?? $this->inboundSecurity;
    }

    /**
     * @inheritDoc
     */
    public function jsonSerialize(): array {
        $data = ['type' => $this->type];
        
        if ($this->type === self::TYPE_URI) {
            $data['uri'] = $this->uri;
        } else {
            $data['inboundHost'] = $this->inboundHost;
            $data['inboundPort'] = $this->inboundPort;
            $data['inboundSecurity'] = $this->inboundSecurity;
            
            if ($this->type === self::TYPE_SOCKET_SPLIT) {
                $data['outboundHost'] = $this->outboundHost;
                $data['outboundPort'] = $this->outboundPort;
                $data['outboundSecurity'] = $this->outboundSecurity;
            }
        }
        
        return array_filter($data, fn($v) => $v !== null);
    }

}