create stock and stock logs

app/Models/Opname.php

@@ -10,17 +10,108 @@ class Opname extends Model
 {
     use HasFactory, SoftDeletes;
 
-    protected $fillable = ['dealer_id','opname_date','user_id','note'];
+    protected $fillable = [
+        'dealer_id',
+        'opname_date',
+        'user_id',
+        'note',
+        'status',
+        'approved_by',
+        'approved_at',
+        'rejection_note'
+    ];
 
-    public function dealer(){
+    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(){
+    public function details()
+    {
         return $this->hasMany(OpnameDetail::class);
     }
 
-    public function user(){
+    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;
+    }
 }

app/Models/Product.php

@@ -19,4 +19,14 @@ class Product extends Model
     public function opnameDetails(){
         return $this->hasMany(OpnameDetail::class);
     }
+
+    public function stocks(){
+        return $this->hasMany(Stock::class);
+    }
+
+    // Helper method untuk mendapatkan total stock saat ini
+    public function getCurrentTotalStockAttribute()
+    {
+        return $this->stocks()->sum('quantity');
+    }
 }

app/Models/Stock.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Stock extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'product_id',
+        'dealer_id',
+        'quantity'
+    ];
+
+    public function product()
+    {
+        return $this->belongsTo(Product::class);
+    }
+
+    public function dealer()
+    {
+        return $this->belongsTo(Dealer::class);
+    }
+
+    public function stockLogs()
+    {
+        return $this->hasMany(StockLog::class);
+    }
+
+    // Method untuk mengupdate stock
+    public function updateStock($newQuantity, $source, $description = null)
+    {
+        $previousQuantity = $this->quantity;
+        $quantityChange = $newQuantity - $previousQuantity;
+        
+        $this->quantity = $newQuantity;
+        $this->save();
+
+        // Buat log perubahan
+        StockLog::create([
+            'stock_id' => $this->id,
+            'source_type' => get_class($source),
+            'source_id' => $source->id,
+            'previous_quantity' => $previousQuantity,
+            'new_quantity' => $newQuantity,
+            'quantity_change' => $quantityChange,
+            'description' => $description,
+            'user_id' => auth()->id()
+        ]);
+
+        return $this;
+    }
+}

app/Models/StockLog.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\StockChangeType;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class StockLog extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'stock_id',
+        'source_type',
+        'source_id',
+        'previous_quantity',
+        'new_quantity',
+        'quantity_change',
+        'change_type',
+        'description',
+        'user_id'
+    ];
+
+    protected $casts = [
+        'change_type' => StockChangeType::class,
+        'previous_quantity' => 'decimal:2',
+        'new_quantity' => 'decimal:2',
+        'quantity_change' => 'decimal:2'
+    ];
+
+    protected static function booted()
+    {
+        static::creating(function ($stockLog) {
+            // Hitung quantity_change
+            $stockLog->quantity_change = $stockLog->new_quantity - $stockLog->previous_quantity;
+            
+            // Tentukan change_type berdasarkan quantity_change
+            if ($stockLog->quantity_change == 0) {
+                // Jika quantity sama persis (tanpa toleransi)
+                $stockLog->change_type = StockChangeType::NO_CHANGE;
+            } else if ($stockLog->quantity_change > 0) {
+                $stockLog->change_type = StockChangeType::INCREASE;
+            } else {
+                $stockLog->change_type = StockChangeType::DECREASE;
+            }
+        });
+    }
+
+    public function stock()
+    {
+        return $this->belongsTo(Stock::class);
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function source()
+    {
+        return $this->morphTo();
+    }
+
+    // Helper method untuk mendapatkan label change_type
+    public function getChangeTypeLabelAttribute()
+    {
+        return $this->change_type->label();
+    }
+}