<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class IssueLabel extends Model
{
    use HasFactory;

    protected $fillable = [
        'name',
        'color',
        'description',
    ];

    public function issues(): BelongsToMany
    {
        return $this->belongsToMany(Issue::class, 'issue_label_pivot');
    }

    public function getTextColorAttribute(): string
    {
        // Calculate if we should use black or white text based on background color
        $color = $this->color;
        $r = hexdec(substr($color, 1, 2));
        $g = hexdec(substr($color, 3, 2));
        $b = hexdec(substr($color, 5, 2));

        // Calculate perceived brightness
        $brightness = (($r * 299) + ($g * 587) + ($b * 114)) / 1000;

        return $brightness > 128 ? '#000000' : '#FFFFFF';
    }
}