<?php

namespace App\Http\Controllers;

use App\Models\Address;
use App\Models\Order;
use App\Models\Product;
use App\Models\User;
use Error;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;

class OrderController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $user = Auth::user();
        if (!$user) {
            throw new AccessDeniedHttpException("Not logged in");
        }
        return view("order/index", ["orders" => $user->orders]);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create(Request $request)
    {
        $validated = $request->validate([
                'products' => 'required|array',
                'products.*' => 'exists:products,uuid',
                'product_quantities' => 'required|array',
                'product_quantities.*' => 'numeric|min:1',
            ]);
        $products_quantities = array_map(fn ($v, $q) => [Product::query()->where("uuid", $v)->first(), $q], $validated["products"], $validated["product_quantities"]);
        return view("order/create", ["products_with_quantities" => $products_quantities]);
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $user = Auth::user();
        if (!$user) {
            throw new AccessDeniedHttpException("Not logged in");
        }
    
        $validated = $request->validate([
                'products' => 'required|array',
                'products.*' => 'exists:products,uuid',
                'product_quantities' => 'required|array',
                'product_quantities.*' => 'numeric|min:1',
                'address' => 'required',
            ]);
        $products_quantities = array_map(fn ($v, $q) => [Product::query()->where("uuid", $v)->first(), $q], $validated["products"], $validated["product_quantities"]);

        DB::transaction(function () use ($validated, $user, $products_quantities) {
            $address = new Address($validated);
            $address->user()->associate($user);
            $address->save();

            $order = new Order();

            $order->address()->associate($address);
            $order->user()->associate($user);
            $order->cost = array_reduce($products_quantities, fn ($c, $i) => bcadd($c,bcmul($i[0]->price,$i[1])), 0);
    
            $order->save();
            foreach($products_quantities as $product_quantity) {
                $product = $product_quantity[0];
                $quantity = $product_quantity[1];
                $order->products()->attach($product);
                $order->products()->find($product->uuid)->pivot->quantity = $quantity;
            }
        });
        foreach($products_quantities as $product) {
            $user->cart()->detach($product[0]);
        }
        return redirect()->route("order.index");
    }

    /**
     * Display the specified resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function show(Order $order)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function edit(Order $order)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, Order $order)
    {
        $validated = $request->validate([
                'address' => 'string',
            ]);
        if (isset($validated["address"])) {
            $address = $order->address()->withDefault(fn () => new Addres($validated));
            $address->address = $validated["address"];
            $order->save();
        }
    }

    /**
     * Remove the specified resource from storage.
     *
     * @return \Illuminate\Http\Response
     */
    public function destroy(Order $order)
    {
        throw new Error("TODO");
        //
    }
}