<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * @property int         $id
 * @property int|null    $unit_id               Unidade que criou o card (nulo para Matriz)
 * @property string      $title
 * @property string|null $description
 * @property string      $phase                 a_fazer|em_progresso|em_revisao|concluido|demandas_especiais
 * @property string      $priority              alta|normal|baixa
 * @property string      $origin                matriz|unit
 * @property string      $scope                 internal|all|specific
 * @property string|null $sector
 * @property string|null $due_date
 * @property int|null    $responsible_user_id
 * @property int|null    $created_by_user_id
 * @property int|null    $target_unit_id
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @property string|null $deleted_at
 * @mixin \Eloquent
 */
class Kanban extends Model
{
    use HasFactory, SoftDeletes;

    protected $table = 'kanbans';

    protected $guarded = ['id'];

    protected $casts = [
        'created_at' => 'datetime',
        'updated_at' => 'datetime',
        'due_date'   => 'date',
    ];

    // Relationships

    public function applicantUnit()
    {
        return $this->belongsTo(Unit::class, 'unit_id');
    }

    public function targetUnit()
    {
        return $this->belongsTo(Unit::class, 'target_unit_id');
    }

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

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

    public function replies()
    {
        return $this->hasMany(KanbanReply::class, 'kanban_id');
    }

    // Query Scopes

    public function scopeVisibleToUnit($query, int $unitId)
    {
        return $query->where(function ($q) use ($unitId) {
            // Cards created by this unit (origin = unit)
            $q->where('unit_id', $unitId)
              // Cards explicitly targeted at this unit (specific or broadcast-per-unit)
              ->orWhere('target_unit_id', $unitId);
            // Note: scope='all' is NOT used here — when broadcasting the controller
            // already creates one card per unit each with its own target_unit_id,
            // so filtering by target_unit_id is sufficient and correct.
        });
    }
}