<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Spatie\Activitylog\Traits\LogsActivity;
use Spatie\Activitylog\LogOptions;

class Guide extends Model
{
    use HasFactory, SoftDeletes, LogsActivity;

    protected $fillable = [
        'name',
        'description',
        'category',
        'tags',
        'status',
        'created_by',
        'published_at',
    ];

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

    public function pages()
    {
        return $this->hasMany(GuidePage::class)->orderBy('sort_order');
    }

    public function trunkPages()
    {
        return $this->hasMany(GuidePage::class)
                    ->where('parent_id', -1)
                    ->orderBy('sort_order');
    }

    public function creator()
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    public function terminals()
    {
        return $this->belongsToMany(Terminal::class, 'terminal_guides')
                    ->withPivot('priority')
                    ->withTimestamps()
                    ->orderBy('priority');
    }

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

    public function scopeCategory($query, string $category)
    {
        return $query->where('category', $category);
    }

    public function getActivitylogOptions(): LogOptions
    {
        return LogOptions::defaults()
            ->logOnly(['name', 'description', 'category', 'status'])
            ->logOnlyDirty()
            ->setDescriptionForEvent(fn(string $eventName) => "指引已{$eventName}");
    }
}