<?php

namespace App\Http\Controllers;

use App\Models\Document;
use App\Models\DocumentProduct;
use App\Models\Product;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class DocumentController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index(): View
    {
        $documents = Document::orderBy('id','desc')->paginate(5);

        return view('document.index', compact('documents'));
    }

    /**
     * Show the form for creating a new resource.
     */
    public function create(): View
    {
        return view('document.create');
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(Request $request): RedirectResponse
    {
        $request->validate([
            'date' => 'required|date',
            'type' => 'required|integer',
            'quantity' => 'required|integer',
            'product_id' => 'required|integer'
        ]);

        $document = Document::create($request->post());
        $product = Product::where(['id' => $request->post('product_id')])->first();

        if (!empty($product)) {
            $documentProduct = new DocumentProduct();
            $documentProduct->product_id = $product->id;
            $documentProduct->document_id = $document->id;
            $documentProduct->quantity = $request->post('quantity');
            $documentProduct->past_quantity = $product->quantity;
            $documentProduct->save();
        }

        return redirect()->route('documents.show')->with('success','Document has been created successfully.');
    }

    public function apply($id): RedirectResponse
    {
        $document = Document::where(['id' => $id])->first();
//        print_r($document->documentProducts);die();
        if ($document->status == Document::STATUS_NOT_APPLIED) {
            $documentProducts = $document->documentProducts;
            if (!empty($documentProducts)) {
                foreach ($documentProducts as $documentProduct) {
                    switch ($document->type){
                        case Document::TYPE_TO:
                            $documentProduct->product->quantity += $documentProduct->quantity;
                            $documentProduct->product->save();
                        case Document::TYPE_FROM:
                            if ($documentProduct->product->quantity >= $documentProduct->quantity) {
                                $documentProduct->quantity -= $documentProduct->quantity;
                                $documentProduct->product->save();
                            }
                    }
                }
            }

            $document->status = Document::STATUS_APPLIED;
            $document->save();
        }

        return  redirect()->route('documents.show')->with('success','Document has been applied successfully.');
    }
}