<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Str;

class Publication extends Model
{
    use HasFactory, SoftDeletes;

    protected $fillable = [
        'post_id',
        'channel_id',
        'prefix_id',
        'title',
        'excerpt',
        'slug',
        'status',
        'published_at',
        'meta_title',
        'meta_description',
        'og_image',
        'canonical_url',
    ];

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

    protected static function booted(): void
    {
        static::saving(function (Publication $publication) {
            if (empty($publication->slug) && !empty($publication->title)) {
                $publication->slug = Str::slug($publication->title);
            }
        });
    }

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

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

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

    public function blocks(): HasMany
    {
        return $this->hasMany(Block::class)->orderBy('order');
    }

    public function taxonomyTerms(): BelongsToMany
    {
        return $this->belongsToMany(TaxonomyTerm::class);
    }

    public function scopePublished(Builder $query): Builder
    {
        return $query->where('status', 'published');
    }

    public function scopeForChannel(Builder $query, Channel $channel): Builder
    {
        return $query->where('channel_id', $channel->id);
    }

    public function scopeForPrefix(Builder $query, Prefix $prefix): Builder
    {
        return $query->where('prefix_id', $prefix->id);
    }

    public function getUrlAttribute(): string
    {
        $this->loadMissing('prefix');
        $this->channel->loadMissing('prefixes');
        $prefixSlug = $this->prefix?->slug
            ?? $this->channel->prefixes->first()?->slug
            ?? 'p';
        $identifier = $this->slug ?? $this->post_id;

        return "/{$prefixSlug}/{$identifier}";
    }
}