<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

class Cart extends Public_Controller {

	public function __construct()
	{
		parent::__construct();
		$this->load->model('cart_model');   
		$this->load->model('product_m'); 
		$this->load->library('form_validation');
		$this->load->library('cart');
	}

	public function index() {	

		/* echo '<pre>';
		print_r($this->cart->contents());
		echo '</pre>'; */

		//get SEO
		$this->db->select('website_name, meta_keywords')->from('configuration')->where('id_configuration', 1);
		$website_name = $this->db->get()->row();
		$this->data_header['browser_title'] =  ucwords($website_name->website_name) . ' - My Cart'; 
		$this->data_header['meta_description'] = ucwords($website_name->website_name) . ' - My Cart';
		$this->data_header['meta_keywords'] = $website_name->meta_keywords;

		if (!$this->cart->contents()){
			$data['message'] = '<p style="background:grey; color:white; padding:10px; margin-bottom:100px;">Your cart is empty</p>';
		
		} else {
			$data['message'] = $this->session->flashdata('message');
		}

		$this->load->view('template/header', $this->data_header);
		$this->load->view('cart', $data);
		$this->load->view('template/footer', $this->data_footer);
	}

	public function add()  {

		//check if there is post request, if not, reject & redirect
		if (empty($_POST)) {
			redirect('cart'); 
		}

		//validation check in action
		$config = array( 
            array(
                 'field'   => 'product_size', 
                 'label'   => 'product Size',
                 'rules'   => 'trim|required|callback_cek_stock'
            )
        );

		$this->form_validation->set_rules($config); 
		$this->form_validation->set_error_delimiters('<div class="error">', '</div>');

		if($this->form_validation->run($this) == TRUE) {

			$id_product_details = (int) $this->input->post('product_size');
			
			//get product details
			$this->db->select('*')->from('product_details')->where('id_product_details', $id_product_details);
			$product_details = $this->db->get()->row();

			$data['id'] = (int) $this->input->post('product_id');	

			//get attributes
			$attributes_array = explode(' ', trim($product_details->attributes));
			$count_attributes = count($attributes_array);
			

			$attributes = '';
			
			for($i = 0; $i<$count_attributes; $i++) {

				//get product size label
				$this->db->select('product_size.product_size as product_size')->from('product_size')->join('product_attributes', 'product_attributes.id_product_size = product_size.id_product_size')->where('product_attributes.product_attributes', $attributes_array[$i]);
				$product_size = $this->db->get()->row()->product_size;

				$attributes = $attributes . ucwords($product_size) . ' ' . ucwords($attributes_array[$i]) . '. ';
			}

			$data['name'] = '<strong>' . $this->input->post('product_name') . '</strong>' .  '<br>Option: ' . $attributes . '<br>Product Code: ' . $product_details->sku; 
			$data['qty'] = (int) $this->input->post('qty');
			$data['price'] = (int) $this->input->post('price');

			$data['options']['size'] =  $attributes;

			$data['options']['sku'] = $product_details->sku;

			$this->cart->product_name_rules = '[:print:]'; //this is to eliminate cart product name restriction on special characters
			
			$this->cart->insert($data); 
	
			redirect('cart'); 
		
		} else {

			//get product alias
			$this->db->select('alias');
			$this->db->from('products');
			$this->db->where('id_products', (int) $this->input->post('product_id'));
			$query = $this->db->get();
			$product_alias = $query->row();

			$this->session->set_flashdata('no_stock', '<br>
				<p style="background:grey; color:white; padding:5px; font-weight:bold;">Sorry not enough stock for chosen quantity. Please choose smaller quantity.</p>');

			redirect(base_url() . 'product/' .  $product_alias->alias);
		}  
	}

	
	public function remove($rowid) {
		if ($rowid=="all"){
			$this->cart->destroy();
		}else{
			$data = array(
				'rowid'   => $rowid,
				'qty'     => 0
			);

			$this->cart->update($data);
		}
		
		redirect('cart');
	}	


	public function update_cart() {

		//check if there is post request, if not, reject & redirect
		if (!isset($_POST['update_cart'])) { redirect('cart'); }

		// Recieve post values,calcute them and update
		$cart_info = $_POST['cart_array'] ;
		
		/* echo '<pre>';
		print_r($cart_info);
		echo '</pre>';
		exit();  */

		foreach( $cart_info as $sku => $cart) {

			//get product detail id
			$this->db->select('id_product_details')->from('product_details')->where('sku', $sku);
			$id_product_detail = $this->db->get()->row()->id_product_details;

			//check the minimum purchase qty required
			if(isset($this->session->userdata('customer')['customer_id'])) {
				
				//customer is logged in
				//check if customer is a reseller. if reseller use reseller min quantity
				$this->db->select('reseller_id')->from('customers')->where('id_customers', $this->session->userdata('customer')['customer_id']);
				$reseller_id = $this->db->get()->row()->reseller_id;

				//check if reseller price already available (already input by admin)
				$this->db->select('price')->from('resellers_price')->where('reseller_id', $reseller_id)->where('product_detail_id', $id_product_detail);
				$count_reseller = $this->db->get()->num_rows();

				if($reseller_id != NULL && $count_reseller > 0) {
				
					//customer is reseller, and data already inputtedby admin. so use reseller min quantity
					$this->db->select('min_quantity')->from('resellers_price')->where('reseller_id', $reseller_id)->where('product_detail_id', $id_product_detail);
					$min_quantity = $this->db->get()->row()->min_quantity;

				} elseif($reseller_id == NULL) {
					
					$min_quantity = 1;

				} elseif($reseller_id != NULL && $count_reseller == 0) {

					//customer is a reseller, but data not input yet, or customer choose empty option..
					//then give default reseller min quantity
					//get reseller min quantity
					$this->db->select('min_quantity')->from('resellers_price')->where('reseller_id', $reseller_id)->where('product_detail_id', $id_product_detail);
					$min_quantity = $this->db->get()->row()->min_quantity;
				}

				if($cart['qty'] < $min_quantity) {

					//cart quantity is less than minimum quantity
					$this->session->set_flashdata('no_stock', "<br>
					<p style='background:grey; color:white; padding:5px; font-weight:bold;'>Sorry minimum quantity is {$min_quantity} pcs. Please choose higher quantity.</p>");
					redirect('cart');
				} 
			} 
			
			//check the available stock for current SKU
			$this->db->select('stock')->from('product_details')->where('sku', $sku);
			$available_stock = (int) $this->db->get()->row()->stock;
			
			if ($cart['qty'] > $available_stock) {

				//stocks are not enough
				$this->session->set_flashdata('no_stock', '<br>
				<p style="background:grey; color:white; padding:5px; font-weight:bold;">Sorry not enough stock for chosen quantity. Please choose smaller quantity.</p>');
				redirect('cart');

			} else {
				//stocks are enough	
				$rowid = $cart['rowid'];
				$price = $cart['price'];
				$qty = $cart['qty'];
				$amount = $price * $cart['qty'];
				
				$data = array(
					'rowid' => $rowid,
					'price' => $price,
					'amount' => $amount,
					'qty' => $qty
				);
				$this->cart->update($data);
			}
		} 

		redirect('cart');
	}


	//callback function validation cek stock available when add to cart
	public function cek_stock() {
		
		$id_product_details = $this->input->post('product_size'); 
		$chosen_quantity = (int) $this->input->post('qty'); 
		
		//get current stock froms product_details table
		$this->db->select('stock');
		$this->db->from('product_details');
		$this->db->where('id_product_details', $id_product_details);
		$query = $this->db->get(); 
		$current_stock = (int)  $query->row()->stock;

		//check if quantity is less or equal to current stock
		if ($chosen_quantity > $current_stock) {
			return FALSE;
		} else {
			return TRUE;  
		}	
	}



}