<?php

namespace App\Http\Controllers\Admin\Manage;

use App\Enums\OrderChannel;
use App\Enums\OrderStatus;
use App\Enums\PaymentMethod;
use App\Enums\PriceType;
use App\Http\Controllers\Controller;
use App\Http\Requests\Admin\Manage\Order\OrderRequest;
use App\Models\Order;
use App\Models\OrderItem;
use App\Models\Product;
use App\Support\LogHelper;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Inertia\Inertia;
use Inertia\Response;

class OrderController extends Controller
{
    public function index(): Response
    {
        return Inertia::render('admin/manage/order/index', [
            'orders' => Order::with(['items.product', 'user'])->latest()->paginate(10),
        ]);
    }

    public function create(): Response
    {
        return Inertia::render('admin/manage/order/create', [
            'products' => Product::with(['prices', 'categories'])->active()->get(),
            'cartItems' => OrderItem::with(['product.prices', 'product.categories'])
                ->where('user_id', auth()->id())
                ->whereNull('order_id')
                ->latest()
                ->get(),
            'orderStatus' => OrderStatus::options(),
            'orderChannels' => OrderChannel::options(),
            'paymentMethods' => PaymentMethod::options(),
            'priceTypes' => PriceType::options(),
        ]);
    }

    public function store(OrderRequest $request): RedirectResponse
    {
        $validated = $request->validated();

        try {
            DB::transaction(function () use ($validated) {
                $totalItemsPrice = collect($validated['items'])->sum('total');
                $cogs = collect($validated['items'])->sum(function ($item) {
                    $product = Product::find($item['product_id']);
                    $purchasePrice = $product->prices()->where('price_type', PriceType::PURCHASE)->first()?->price ?? 0;

                    return $purchasePrice * $item['qty'];
                });

                $order = Order::create([
                    'customer_name' => $validated['customer_name'],
                    'cogs' => $cogs,
                    'subtotal' => $totalItemsPrice,
                    'discount' => $validated['discount'],
                    'payment' => $validated['payment'],
                    'payment_method' => $validated['payment_method'],
                    'order_status' => $validated['order_status'],
                    'order_channel' => $validated['order_channel'],
                ]);

                foreach ($validated['items'] as $item) {
                    OrderItem::create([
                        'user_id' => auth()->id(),
                        'order_id' => $order->id,
                        'product_id' => $item['product_id'],
                        'price' => $item['price'],
                        'qty' => $item['qty'],
                        'total' => $item['total'],
                        'price_type' => $item['price_type'],
                    ]);

                    Product::find($item['product_id'])->decrement('stock', $item['qty']);
                }

                OrderItem::where('user_id', auth()->id())
                    ->whereNull('order_id')
                    ->delete();
            });

            return redirect()->route('order.index')->with('success', 'Pesanan berhasil disimpan');
        } catch (\Throwable $e) {
            LogHelper::logException($e, 'Failed to store order', [
                'customer_name' => $validated['customer_name'],
                'items_count' => count($validated['items'] ?? []),
            ]);

            return redirect()
                ->back()
                ->withInput()
                ->with('error', 'Terjadi kesalahan, silakan hubungi pengembang');
        }
    }

    public function edit(Order $order): Response
    {
        $order->load(['items.product']);

        return Inertia::render('admin/manage/order/edit', [
            'order' => $order,
            'products' => Product::with(['prices', 'categories'])->active()->get(),
            'orderStatus' => OrderStatus::options(),
            'orderChannels' => OrderChannel::options(),
            'paymentMethods' => PaymentMethod::options(),
            'priceTypes' => PriceType::options(),
        ]);
    }

    public function show(Order $order): Response
    {
        $order->load(['items.product', 'user']);

        return Inertia::render('admin/manage/order/show', [
            'order' => $order,
        ]);
    }

    public function update(OrderRequest $request, Order $order): RedirectResponse
    {
        $validated = $request->validated();

        try {
            DB::transaction(function () use ($validated, $order) {
                $totalItemsPrice = collect($validated['items'])->sum(fn ($item) => $item['qty'] * $item['price']);
                $cogs = collect($validated['items'])->sum(function ($item) {
                    $product = Product::find($item['product_id']);
                    $purchasePrice = $product->prices()->where('price_type', PriceType::PURCHASE)->first()?->price ?? 0;

                    return $purchasePrice * $item['qty'];
                });

                // Restore stock for old items
                foreach ($order->items as $item) {
                    $item->product->increment('stock', $item->qty);
                }

                $order->items()->delete();

                $order->update([
                    'customer_name' => $validated['customer_name'],
                    'cogs' => $cogs,
                    'subtotal' => $totalItemsPrice,
                    'discount' => $validated['discount'],
                    'payment' => $validated['payment'],
                    'payment_method' => $validated['payment_method'],
                    'order_status' => $validated['order_status'],
                    'order_channel' => $validated['order_channel'],
                ]);

                foreach ($validated['items'] as $item) {
                    $order->items()->create([
                        'user_id' => auth()->id(),
                        'product_id' => $item['product_id'],
                        'price' => $item['price'],
                        'qty' => $item['qty'],
                        'total' => $item['total'],
                        'price_type' => $item['price_type'],
                    ]);

                    Product::find($item['product_id'])->decrement('stock', $item['qty']);
                }
            });

            return redirect()->route('order.index')->with('success', 'Pesanan berhasil diperbarui');
        } catch (\Throwable $e) {
            LogHelper::logException($e, 'Failed to update order', [
                'order_id' => $order->id,
                'customer_name' => $validated['customer_name'],
            ]);

            return redirect()
                ->back()
                ->withInput()
                ->with('error', 'Terjadi kesalahan, silakan hubungi pengembang');
        }
    }

    public function destroy(Order $order): RedirectResponse
    {
        $order->delete();

        return redirect()->back()->with('success', 'Pesanan berhasil dihapus');
    }

    public function bulkDestroy(Request $request): RedirectResponse
    {
        $ids = $request->input('ids');

        try {
            DB::transaction(function () use ($ids) {
                $orders = Order::whereIn('id', $ids)->get();
                foreach ($orders as $order) {
                    $order->delete();
                }
            });

            return redirect()->back()->with('success', 'Pesanan terpilih berhasil dihapus');
        } catch (\Throwable $e) {
            LogHelper::logException($e, 'Failed to bulk delete orders', [
                'ids' => $ids,
            ]);

            return redirect()->back()->with('error', 'Terjadi kesalahan, silakan hubungi pengembang');
        }
    }
}