<?php

namespace App\Models;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * Datei-Anhang einer Angebotsversion (Modul 6).
 *
 * Struktur ist bewusst an {@see BookingFile} angelehnt (identifier,
 * filename, dir, original_name, ext, mine, size), damit der vorhandene
 * `FileRepository::store()` 1:1 wiederverwendet werden kann. `mine`
 * bleibt so geschrieben (statt `mime`) zur Konsistenz mit der
 * booking_files-Konvention.
 *
 * @property int $id
 * @property int $offer_version_id
 * @property string|null $identifier
 * @property string $filename
 * @property string $dir
 * @property string $original_name
 * @property string $ext
 * @property string $mine
 * @property int $size
 * @property bool $include_in_pdf
 * @property Carbon $created_at
 * @property Carbon $updated_at
 * @property-read OfferVersion $version
 */
class OfferFile extends Model
{
    use HasFactory;

    protected $table = 'offer_files';

    protected $fillable = [
        'offer_version_id',
        'identifier',
        'filename',
        'dir',
        'original_name',
        'ext',
        'mine',
        'size',
        'include_in_pdf',
    ];

    protected $casts = [
        'offer_version_id' => 'int',
        'size'             => 'int',
        'include_in_pdf'   => 'bool',
    ];

    public static array $iconExt = [
        'default' => 'fa fa-file',
        'pdf'     => 'fa fa-file-pdf',
        'jpg'     => 'fa fa-file-image',
        'jpeg'    => 'fa fa-file-image',
        'png'     => 'fa fa-file-image',
        'doc'     => 'fa fa-file-word',
        'docx'    => 'fa fa-file-word',
    ];

    public function version(): BelongsTo
    {
        return $this->belongsTo(OfferVersion::class, 'offer_version_id');
    }

    public function getIconExt(): string
    {
        return self::$iconExt[$this->ext] ?? self::$iconExt['default'];
    }

    public function getURL(bool|string $do = false): string
    {
        return route('storage_file', [$this->id, 'offer', $do]);
    }

    public function getPath(): string
    {
        return \Storage::disk('offer')->path($this->dir . $this->filename);
    }

    public function formatBytes(int $precision = 2): string
    {
        $size = $this->size;
        if ($size <= 0) {
            return (string) $size;
        }

        $base     = log($size) / log(1024);
        $suffixes = [' bytes', ' KB', ' MB', ' GB', ' TB'];

        return round(1024 ** ($base - floor($base)), $precision) . $suffixes[floor($base)];
    }
}