<?php

declare(strict_types=1);

namespace App\Framework\Discovery\ValueObjects;

use App\Framework\Core\ValueObjects\Byte;
use App\Framework\Filesystem\FilePath;

/**
 * Immutable value object for template mappings
 * Replaces simple key-value arrays with memory-efficient typed structure
 */
final readonly class TemplateMapping
{
    public function __construct(
        public string $name,
        public FilePath $path,
        public string $type = 'view'
    ) {
    }

    public static function create(
        string $name,
        string $path,
        string $type = 'view'
    ): self {
        return new self(
            name: $name,
            path: FilePath::create($path),
            type: $type
        );
    }

    public static function fromPath(FilePath $path): self
    {
        $name = basename($path->toString(), '.php');
        $type = str_contains($path->toString(), '/views/') ? 'view' : 'template';

        return new self(
            name: $name,
            path: $path,
            type: $type
        );
    }

    /**
     * Get unique identifier for deduplication
     */
    public function getUniqueId(): string
    {
        return $this->name . '::' . $this->type;
    }

    /**
     * Check if this mapping is the same as another
     */
    public function isSameAs(self $other): bool
    {
        return $this->name === $other->name && $this->type === $other->type;
    }

    /**
     * Check if template matches name pattern
     */
    public function matchesName(string $pattern): bool
    {
        return fnmatch($pattern, $this->name);
    }

    /**
     * Get template extension
     */
    public function getExtension(): string
    {
        return pathinfo($this->path->toString(), PATHINFO_EXTENSION);
    }

    /**
     * Check if template is of specific type
     */
    public function isType(string $type): bool
    {
        return $this->type === $type;
    }

    /**
     * Convert to array for serialization
     */
    public function toArray(): array
    {
        return [
            'name' => $this->name,
            'path' => $this->path->toString(),
            'type' => $this->type,
        ];
    }

    /**
     * Create from array data
     */
    public static function fromArray(array $data): self
    {
        // Handle both string paths and FilePath objects/arrays from old cache data
        $path = $data['path'];
        if (is_array($path)) {
            // Old cache format: FilePath object was serialized as array
            $path = $path['path'] ?? (string) reset($path);
        } elseif (! is_string($path)) {
            // Fallback: convert to string
            $path = (string) $path;
        }

        // Skip invalid/empty paths from corrupted cache data
        if (empty(trim($path))) {
            throw new \InvalidArgumentException("Cannot create TemplateMapping with empty path");
        }

        return new self(
            name: $data['name'],
            path: FilePath::create($path),
            type: $data['type'] ?? 'view'
        );
    }

    /**
     * Get memory footprint estimate
     */
    public function getMemoryFootprint(): Byte
    {
        $bytes = strlen($this->name) +
                 strlen($this->path->toString()) +
                 strlen($this->type);

        return Byte::fromBytes($bytes);
    }
}