<?php

namespace Controller;

class Cart {
    
    private $basket;
    
    function __construct() {
        $f3 = \Base::instance();
        
        $f3->route('POST /api/cart/add', '\Controller\Cart->add');
        $f3->route('GET  /api/cart/del', '\Controller\Cart->del');
        $f3->route('GET /api/cart/more', '\Controller\Cart->more');
        $f3->route('GET /api/cart/less', '\Controller\Cart->less');
        $this->basket = new \Basket( 'cart' );
        
        //$this->basket->drop();
    }
    
    function index() {
        $f3 = \Base::instance();
        $tmp = $this->basket->find();
        
        
        $cart = [];
        foreach ($tmp as $i) {
            $cart[] = [
                'name' => $i->get('name'),
                'price' => $i->get('price'),
                'amount' => $i->get('amount')
                ];
        }
        
        $cart_total = 0.0;
        foreach ($cart as $item) {
            $cart_total += $item['amount'] * $item['price'];
        }
        
        $f3->set('cart_meta',array_merge(
            $f3->get('cart_meta') ? : [], 
            [
                'cart_total' => $cart_total
            ])
        );
        $f3->set('cart', $cart);
        $this->sanitize_cart();
        
    }
    
    function sanitize_cart() {
        $f3 = \Base::instance();
    }
    
    function add() {
        $f3 = \Base::instance();
        
        $caller = $f3->get('POST.caller');
        $name = $f3->get('POST.name');
        $price = $f3->get('POST.price');
        $amount = $f3->get('POST.amount') ? : 1;
        
        $previously_in_cart = $this->basket->find('name',$name);
        if (count($previously_in_cart) > 0) {
            // item already in cart
            // add to counter
            $this->basket->load('name',$name);
            $this->basket->set('amount',$this->basket->get('amount') + $amount);
            $this->basket->save();
            $this->basket->reset();
        } else {
                $this->basket->set('name',$name);
                $this->basket->set('price',$price);
                $this->basket->set('amount',$amount);
                $this->basket->save();
                $this->basket->reset();
            
        };
        //echo $caller;
        $f3->reroute($caller);
    }
    
    function del($name = false) {
        $f3 = \Base::instance();
        
        $caller = $f3->get('GET.caller');
        $name = $name ? : urldecode($f3->get('GET.name'));
        
        $this->basket->erase('name', $name);
        
        
        $f3->reroute($caller);
    }
    
    function more() {
        $f3 = \Base::instance();
        
        $caller = $f3->get('GET.caller');
        $this->change_quantity(1);
        
        $f3->reroute($caller);
    }
    function less() {
        $f3 = \Base::instance();
        
        $caller = $f3->get('GET.caller');
        $this->change_quantity(-1);
        
        $f3->reroute($caller);
    }
    
    function change_quantity($amount = 0) {
        $f3 = \Base::instance();
        
        $caller = $f3->get('GET.caller');
        $name = urldecode($f3->get('GET.name'));
        
        $this->basket->load('name', $name);
        $new_amount = $this->basket->get('amount') + $amount;
        if ($new_amount > 0) {
            $this->basket->set('amount',$this->basket->get('amount') + $amount);
        } else {
            $this->del($name);
        }
        $this->basket->save();
        $this->basket->reset();
    }
    
    function checkout() {
        $t = \Template::instance();
        return $t->render('checkout.htm');
    }
    
}