<?php

namespace Modules\Restaurant\Database\Seeders;

use Faker\Factory as Faker;
use Illuminate\Database\Seeder;
use Illuminate\Support\Str;
use Modules\Authentication\Models\User;
use Modules\Restaurant\Models\Ingredient;
use Modules\Restaurant\Models\Purchase;
use Modules\Restaurant\Models\PurchaseItem;
use Modules\Restaurant\Models\Stock;
use Modules\Restaurant\Models\Supplier;

class PurchaseSeeder extends Seeder
{
    public function run(): void
    {
        $faker = Faker::create();

        $restaurantId = 1; // set dynamically later if needed
        $supplierIds = Supplier::pluck('id')->toArray();
        $ingredientIds = Ingredient::pluck('id')->toArray();
        $userIds = User::pluck('id')->toArray();

        if (empty($supplierIds) || empty($ingredientIds)) {
            $this->command->warn('⚠️ Skipping PurchaseSeeder: No suppliers or ingredients found.');

            return;
        }

        $purchaseCount = rand(10, 20);

        for ($i = 1; $i <= $purchaseCount; $i++) {
            $supplierId = $faker->randomElement($supplierIds);
            $createdBy = ! empty($userIds) ? $faker->randomElement($userIds) : null;

            $purchase = Purchase::create([
                'restaurant_id' => $restaurantId,
                'supplier_id' => $supplierId,
                'invoice_no' => strtoupper(Str::random(8)),
                'purchase_date' => $faker->dateTimeBetween('-3 months', 'now'),
                'sub_total' => 0,
                'discount_amount' => 0,
                'tax_amount' => 0,
                'total_amount' => 0,
                'payment_status' => $faker->randomElement(['paid', 'unpaid', 'partial']),
                'payment_method' => $faker->randomElement(['cash', 'bank', 'credit']),
                'purchase_type' => $faker->randomElement(['ingredient', 'equipment', 'others']),
                'created_by' => $createdBy,
                'notes' => $faker->optional()->sentence(10),
                'status' => 1,
            ]);

            $itemCount = rand(2, 6);
            $subTotal = $taxTotal = $discountTotal = 0;

            for ($j = 1; $j <= $itemCount; $j++) {
                $ingredientId = $faker->randomElement($ingredientIds);
                $quantity = $faker->randomFloat(2, 1, 20);
                $unitPrice = $faker->randomFloat(2, 10, 500);
                $tax = $faker->randomFloat(2, 0, 10);
                $discount = $faker->randomFloat(2, 0, 5);

                $totalCost = ($unitPrice * $quantity) + $tax - $discount;

                $item = PurchaseItem::create([
                    'restaurant_id' => $restaurantId,
                    'purchase_id' => $purchase->id,
                    'ingredient_id' => $ingredientId,
                    'quantity' => $quantity,
                    'unit_price' => $unitPrice,
                    'total_cost' => $totalCost,
                    'tax_amount' => $tax,
                    'discount_amount' => $discount,
                    'batch_no' => strtoupper(Str::random(6)),
                    'expiry_date' => $faker->optional()->dateTimeBetween('now', '+1 year'),
                    'received_quantity' => $quantity,
                    'wastage_quantity' => $faker->randomFloat(2, 0, 1),
                    'returned_quantity' => $faker->randomFloat(2, 0, 1),
                    'status' => 1,
                ]);

                // ✅ Stock Adjustment
                Stock::create([
                    'restaurant_id' => $restaurantId,
                    'ingredient_id' => $ingredientId,
                    'type' => 'purchase',
                    'quantity' => $quantity,
                    'unit_cost' => $unitPrice,
                    'total_cost' => $totalCost,
                    'reference_type' => 'Purchase',
                    'purchase_id' => $purchase->id,
                    'batch_no' => $item->batch_no,
                    'expiry_date' => $item->expiry_date,
                    'added_by' => $createdBy,
                    'remarks' => 'Auto stock-in from purchase #'.$purchase->invoice_no,
                    'status' => 1,
                    'created_at' => now(),
                    'updated_at' => now(),
                ]);

                $subTotal += ($unitPrice * $quantity);
                $taxTotal += $tax;
                $discountTotal += $discount;
            }

            $purchase->update([
                'sub_total' => $subTotal,
                'tax_amount' => $taxTotal,
                'discount_amount' => $discountTotal,
                'total_amount' => ($subTotal + $taxTotal - $discountTotal),
            ]);
        }

        $this->command->info("✅ Seeded {$purchaseCount} purchases with items and stock adjustments successfully.");
    }
}