<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class Article extends Model
{
    protected $fillable = [
        'title',
        'slug',
        'excerpt',
        'body',
        'published_at',
    ];

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

    protected static function boot(): void
    {
        parent::boot();

        static::creating(function (Article $article) {
            if (empty($article->slug)) {
                $article->slug = static::generateUniqueSlug($article->title);
            }
        });

        static::updating(function (Article $article) {
            if ($article->isDirty('title') && empty($article->slug)) {
                $article->slug = static::generateUniqueSlug($article->title);
            }
        });
    }

    public static function generateUniqueSlug(string $title): string
    {
        $baseSlug = Str::limit(Str::slug($title), 200, '');
        $slug = $baseSlug;
        $counter = 1;

        while (static::where('slug', $slug)->exists()) {
            $slug = $baseSlug . '-' . $counter;
            $counter++;
        }

        return $slug;
    }

    public function scopePublished(Builder $query): Builder
    {
        return $query->whereNotNull('published_at')->where('published_at', '<=', now());
    }

    public function getIsPublishedAttribute(): bool
    {
        return $this->published_at !== null && $this->published_at->isPast();
    }

    public function getRouteKeyName(): string
    {
        return 'slug';
    }
}