<?php

namespace App\Models;

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

class Opname extends Model
{
    use HasFactory, SoftDeletes;

    protected $fillable = [
        'dealer_id',
        'opname_date',
        'user_id',
        'note',
        'status',
        'approved_by',
        'approved_at',
        'rejection_note'
    ];

    protected $casts = [
        'approved_at' => 'datetime'
    ];

    protected static function booted()
    {
        static::updated(function ($opname) {
            // Jika status berubah menjadi approved
            if ($opname->isDirty('status') && $opname->status === 'approved') {
                // Update stock untuk setiap detail opname
                foreach ($opname->details as $detail) {
                    $stock = Stock::firstOrCreate(
                        [
                            'product_id' => $detail->product_id,
                            'dealer_id' => $opname->dealer_id
                        ],
                        ['quantity' => 0]
                    );

                    // Update stock dengan physical_stock dari opname
                    $stock->updateStock(
                        $detail->physical_stock,
                        $opname,
                        "Stock adjustment from approved opname #{$opname->id}"
                    );
                }
            }
        });
    }

    public function dealer()
    {
        return $this->belongsTo(Dealer::class);
    }

    public function details()
    {
        return $this->hasMany(OpnameDetail::class);
    }

    public function user()
    {
        return $this->belongsTo(User::class);
    }

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

    // Method untuk approve opname
    public function approve(User $approver)
    {
        if ($this->status !== 'pending') {
            throw new \Exception('Only pending opnames can be approved');
        }

        $this->status = 'approved';
        $this->approved_by = $approver->id;
        $this->approved_at = now();
        $this->save();

        return $this;
    }

    // Method untuk reject opname
    public function reject(User $rejector, string $note)
    {
        if ($this->status !== 'pending') {
            throw new \Exception('Only pending opnames can be rejected');
        }

        $this->status = 'rejected';
        $this->approved_by = $rejector->id;
        $this->approved_at = now();
        $this->rejection_note = $note;
        $this->save();

        return $this;
    }

    // Method untuk submit opname untuk approval
    public function submit()
    {
        if ($this->status !== 'draft') {
            throw new \Exception('Only draft opnames can be submitted');
        }

        $this->status = 'pending';
        $this->save();

        return $this;
    }
}