<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Support\Facades\Storage;

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

    protected $casts = [
        'published_at' => 'datetime',
    ];

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

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

    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->lte(now());
    }

    public function getCoverUrlAttribute(): ?string
    {
        $cover = (string) ($this->attributes['cover_image'] ?? '');
        if ($cover === '') {
            return null;
        }
        if (preg_match('/^https?:\/\//i', $cover)) {
            return $cover;
        }
        return Storage::url($cover);
    }
}