<?php

namespace App\Models;

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

class NoteScan extends Model
{
    protected $fillable = [
        'device_id', 'note_id', 'item_key', 'content_hash', 'scan_status', 'scanned_at',
    ];

    protected function casts(): array
    {
        return [
            'scan_status' => 'integer',
            'scanned_at' => 'datetime',
        ];
    }

    public function device(): BelongsTo
    {
        return $this->belongsTo(Device::class);
    }

    public function note(): BelongsTo
    {
        return $this->belongsTo(Note::class);
    }

    public static function itemKey(array $item, int $index = 0): string
    {
        $native = $item['native_id'] ?? null;
        if ($native !== null && $native !== '') {
            return 'n:'.(string) $native;
        }

        return 'h:'.substr(hash('sha1', (string) ($item['title'] ?? '').'|'.(string) ($item['body'] ?? '')), 0, 24);
    }

    public const HASH_VERSION = '2';

    public static function itemHash(array $item): string
    {
        return hash('sha256', self::HASH_VERSION."\n".(string) ($item['title'] ?? '')."\n".(string) ($item['body'] ?? ''));
    }
}