<?php

namespace Modules\TimelineScheduling\Models;

use App\Traits\HasPublicIdentifier;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Modules\ProjectManagement\Models\Task;
use Modules\TimelineScheduling\Enums\DependencyType;

class TaskDependency extends Model
{
    use HasPublicIdentifier;

    protected $fillable = ['task_id', 'predecessor_id', 'dependency_type', 'lag_days'];

    protected function casts(): array
    {
        return ['dependency_type' => DependencyType::class];
    }

    public function task(): BelongsTo
    {
        return $this->belongsTo(Task::class, 'task_id');
    }

    public function predecessor(): BelongsTo
    {
        return $this->belongsTo(Task::class, 'predecessor_id');
    }
}