<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class File extends Model
{
    protected $fillable = [
        'file_name',
        'mime_type',
        'size_bytes',
        'storage_uri',
        'sha256',
        'uploaded_by',
        'uploaded_at',
    ];

    protected $casts = [
        'size_bytes' => 'integer',
        'uploaded_at' => 'datetime',
    ];

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class, 'uploaded_by');
    }

    /**
     * Get the uploader name.
     */
    public function getUploaderName(): string
    {
        return $this->user ? $this->user->name : 'Utilisateur inconnu';
    }

    /**
     * Get the formatted file size.
     */
    public function getFormattedSize(): string
    {
        if (!$this->size_bytes) {
            return '0 B';
        }

        $units = ['B', 'KB', 'MB', 'GB', 'TB'];
        $bytes = $this->size_bytes;
        $i = 0;

        while ($bytes >= 1024 && $i < count($units) - 1) {
            $bytes /= 1024;
            $i++;
        }

        return round($bytes, 2) . ' ' . $units[$i];
    }

    /**
     * Get the file extension from the file name.
     */
    public function getExtension(): string
    {
        return pathinfo($this->file_name, PATHINFO_EXTENSION);
    }

    /**
     * Check if the file is an image.
     */
    public function isImage(): bool
    {
        return str_starts_with($this->mime_type ?? '', 'image/');
    }

    /**
     * Check if the file is a PDF.
     */
    public function isPdf(): bool
    {
        return $this->mime_type === 'application/pdf';
    }

    /**
     * Get the organized storage path (e.g., client/devis/filename.pdf).
     */
    public function getOrganizedPath(): string
    {
        // Extract directory structure from storage_uri
        $path = $this->storage_uri;

        // Remove storage path prefix if present
        if (str_contains($path, 'storage/')) {
            $path = substr($path, strpos($path, 'storage/') + 8);
        }

        return $path;
    }
}