feat: Add PurchaseSeeder to generate purchase records with associated items and users

database/seeders/DatabaseSeeder.php

@@ -52,6 +52,7 @@ public function run(): void
                 TestimonialSeeder::class,
                 ArticleSeeder::class,
                 OrderSeeder::class,
+                PurchaseSeeder::class,
                 ExpenseSeeder::class,
                 PayrollSeeder::class,
             ]);

database/seeders/PurchaseSeeder.php

@@ -0,0 +1,111 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\Perfume;
+use App\Models\Product;
+use App\Models\Purchase;
+use App\Models\PurchaseItem;
+use App\Models\User;
+use App\Models\Warehouse;
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Collection;
+
+class PurchaseSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $warehouses = Warehouse::all();
+        if ($warehouses->isEmpty()) {
+            $warehouses = Warehouse::factory(3)->create();
+        }
+
+        $users = User::all();
+        if ($users->isEmpty()) {
+            $users = User::factory(5)->create();
+        }
+
+        $perfumes = Perfume::all();
+        $products = Product::all();
+
+        if ($perfumes->isEmpty() && $products->isEmpty()) {
+            $perfumes = Perfume::factory(10)->create();
+        }
+
+        $purchasableItems = collect();
+        if ($perfumes->isNotEmpty()) {
+            $purchasableItems = $purchasableItems->merge($perfumes);
+        }
+        if ($products->isNotEmpty()) {
+            $purchasableItems = $purchasableItems->merge($products);
+        }
+
+        $startDate = now()->subMonths(6)->startOfMonth();
+        $endDate = now();
+        $purchaseCount = 0;
+
+        // Iterate through each month
+        for ($date = $startDate->copy(); $date->lte($endDate); $date->addMonth()) {
+            // Purchases twice a month (e.g., 5th and 20th)
+            $purchaseDates = [
+                $date->copy()->day(5),
+                $date->copy()->day(20),
+            ];
+
+            foreach ($purchaseDates as $purchaseDate) {
+                if ($purchaseDate->gt($endDate)) {
+                    continue; // Skip if date is in the future
+                }
+
+                $purchaseCount++;
+                $warehouse = $warehouses->random();
+
+                $purchaseTime = $purchaseDate->copy()->addHours(rand(9, 16))->addMinutes(rand(0, 59));
+
+                $purchase = Purchase::create([
+                    'warehouse_id' => $warehouse->id,
+                    'invoice_number' => 'PO'.$purchaseTime->format('Ymd').str_pad($purchaseCount, 4, '0', STR_PAD_LEFT),
+                    'purchase_date' => $purchaseTime->toDateString(),
+                    'total' => 0,
+                    'note' => 'Restock '.$purchaseTime->format('F Y'),
+                    'created_at' => $purchaseTime,
+                    'updated_at' => $purchaseTime,
+                ]);
+
+                $this->createPurchaseItems($purchase, $users->random(), $purchasableItems);
+            }
+        }
+    }
+
+    private function createPurchaseItems(Purchase $purchase, User $user, Collection $purchasables): void
+    {
+        $itemCount = rand(5, 15);
+        $totalPurchase = 0;
+
+        for ($j = 0; $j < $itemCount; $j++) {
+            $item = $purchasables->random();
+            $qty = rand(50, 500);
+
+            $unitPrice = $item->cost_price ?? (int) (($item->sale_price ?? rand(50000, 150000)) * 0.4);
+            $totalPrice = $unitPrice * $qty;
+
+            PurchaseItem::create([
+                'purchase_id' => $purchase->id,
+                'user_id' => $user->id,
+                'purchasable_type' => $item->getMorphClass(),
+                'purchasable_id' => $item->id,
+                'quantity' => $qty,
+                'unit_price' => $unitPrice,
+                'total_price' => $totalPrice,
+                'created_at' => $purchase->created_at,
+                'updated_at' => $purchase->created_at,
+            ]);
+
+            $totalPurchase += $totalPrice;
+        }
+
+        $purchase->update([
+            'total' => $totalPurchase,
+        ]);
+    }
+}