<?php

namespace Database\Seeders;

use App\Models\Product;
use App\Models\Warehouse;
use Illuminate\Database\Seeder;
use Illuminate\Support\Facades\DB;

class StockItemSeeder extends Seeder
{
    public function run(): void
    {
        $products = Product::all();
        $warehouses = Warehouse::all();

        // Define realistic stock quantities for each product × warehouse
        $stockData = [
            // Product 1: High rotation, variable stock
            1 => [
                ['warehouse_id' => 1, 'qty_on_hand' => 150.000, 'safety_stock' => 50.000],     // Paris: Normal
                ['warehouse_id' => 2, 'qty_on_hand' => 45.000, 'safety_stock' => 50.000],      // Marseille: LOW STOCK - ALERT
                ['warehouse_id' => 3, 'qty_on_hand' => 120.000, 'safety_stock' => 40.000],     // Lyon: Normal
            ],
            // Product 2: Medium rotation
            2 => [
                ['warehouse_id' => 1, 'qty_on_hand' => 80.000, 'safety_stock' => 30.000],      // Paris: Normal
                ['warehouse_id' => 2, 'qty_on_hand' => 25.000, 'safety_stock' => 35.000],      // Marseille: LOW STOCK - ALERT
                ['warehouse_id' => 3, 'qty_on_hand' => 90.000, 'safety_stock' => 30.000],      // Lyon: Normal
            ],
            // Product 3: Low rotation, strategic stock
            3 => [
                ['warehouse_id' => 1, 'qty_on_hand' => 200.000, 'safety_stock' => 80.000],     // Paris: Normal
                ['warehouse_id' => 2, 'qty_on_hand' => 75.000, 'safety_stock' => 80.000],      // Marseille: LOW STOCK - ALERT
                ['warehouse_id' => 3, 'qty_on_hand' => 180.000, 'safety_stock' => 70.000],     // Lyon: Normal
            ],
            // Product 4: High value, low volume
            4 => [
                ['warehouse_id' => 1, 'qty_on_hand' => 15.000, 'safety_stock' => 8.000],       // Paris: Normal
                ['warehouse_id' => 2, 'qty_on_hand' => 5.000, 'safety_stock' => 10.000],       // Marseille: LOW STOCK - ALERT
                ['warehouse_id' => 3, 'qty_on_hand' => 12.000, 'safety_stock' => 8.000],       // Lyon: Normal
            ],
            // Product 5: Medium rotation
            5 => [
                ['warehouse_id' => 1, 'qty_on_hand' => 120.000, 'safety_stock' => 40.000],     // Paris: Normal
                ['warehouse_id' => 2, 'qty_on_hand' => 35.000, 'safety_stock' => 45.000],      // Marseille: LOW STOCK - ALERT
                ['warehouse_id' => 3, 'qty_on_hand' => 110.000, 'safety_stock' => 40.000],     // Lyon: Normal
            ],
            // Product 6: High rotation, high volume
            6 => [
                ['warehouse_id' => 1, 'qty_on_hand' => 500.000, 'safety_stock' => 150.000],    // Paris: Normal
                ['warehouse_id' => 2, 'qty_on_hand' => 140.000, 'safety_stock' => 160.000],    // Marseille: LOW STOCK - ALERT
                ['warehouse_id' => 3, 'qty_on_hand' => 480.000, 'safety_stock' => 150.000],    // Lyon: Normal
            ],
        ];

        foreach ($stockData as $productId => $warehouseStocks) {
            foreach ($warehouseStocks as $stock) {
                DB::table('stock_items')->updateOrInsert(
                    [
                        'product_id' => $productId,
                        'warehouse_id' => $stock['warehouse_id'],
                    ],
                    [
                        'qty_on_hand_base' => $stock['qty_on_hand'],
                        'safety_stock_base' => $stock['safety_stock'],
                        'updated_at' => now(),
                        'created_at' => now(),
                    ]
                );
            }
        }
    }
}