<?php


namespace App\Feeds;


use Carbon\Carbon;

include_once $_SERVER['DOCUMENT_ROOT'] . '/App/Feeds/FeedRepository.php';
include_once $_SERVER['DOCUMENT_ROOT'] . '/lib/Carbon/Carbon.php';


class FeedService
{
    private $repository;

    private $writer;

    public function __construct()
    {
        $this->repository = new FeedRepository();
        $this->writer = new FeedXmlWriter();
    }

    /**
     * Return all product variants with images
     *
     * @return array
     */
    public function productsForGoogleFeed()
    {
        // Check if user only wants recently updated products
        isset($_GET['updated_at']) ?
            $updated_at = Carbon::createFromTimestamp($_GET['updated_at'],'Europe/Amsterdam')->toDateTimeString() :
            $updated_at = null;

        // Do a small query to check if any product is updated
        if($updated_at != null)
        {
            if( ! $this->repository->checkForUpdatedProducts($updated_at)) return [];
        }

        // Get all products and all images
        $products = $this->repository->products(['googleCategoryId'],$updated_at,true);

        // Get product ids
        $productIds = [];
        foreach($products as $product)
        {
            $productIds[] = $product['id'];
        }

        $images = $this->repository->productImages($productIds);

        // Get all categories
        $categories = $this->repository->categories();
        $productsAsObject = [];

        // Loop through all products
        foreach($products as $product)
        {
            // Add images to product
            isset($images[$product['id']]) ? $product['images'] = $images[$product['id']] : $product['images'] = [];

            // Decide whether the product is male, female or unisex by category
            isset($categories[$product['shop_category_id']]) ?
                $category = $categories[$product['shop_category_id']] :
                $category = null;
            $product['gender'] = $this->addGender($category);

            // Convert array to object
            if( ! empty($product['images']))
                $productsAsObject[] = (object) $product;
        }
        return $productsAsObject;
    }

    /*
     *
     */
    public function productsForDaisyconFeed()
    {
        $products = $this->repository->products();
        $categories = $this->repository->categories();
        $images = $this->repository->productImages();

        $productsAsObject = [];

        // Loop through products
        foreach($products as $product)
        {
            // Add images to product
            isset($images[$product['id']]) ? $product['images'] = $images[$product['id']] : $product['images'] = [];

            $xmlTagNames = ['img_large','img_medium','img_small'];
            $count = 0;
            foreach($product['images'] as $image)
            {
                if($count > 2) break;
                $product[$xmlTagNames[$count]] = $image;
                $count++;
            }

            // Add category
            if(isset($categories[$product['shop_category_id']]))
            {
                $category = $categories[$product['shop_category_id']];
                $product['category'] = $product['subcategory'] = $category->category;
                if(isset($category->parent_category) && ! empty($category->parent_category))
                {
                    $product['category'] = $category->parent_category;
                    $product['subcategory'] = $category->category;
                }
                if(isset($category->grandparent_category) && ! empty($category->grandparent_category))
                {
                    $product['category'] = $category->grandparent_category;
                }

                // Gender
                $product['gender'] = $category->gender;
            }
            else
            {
                $product['category'] = $product['subcategory'] = $product['gender'] = null;
            }


            // Color
            $product['color'] = $this->getColor($product['color']);

            // Convert to object
            $productsAsObject[] = (object) $product;
        }

        return $productsAsObject;

    }


    /**
     * Decide whether the product is male, female or unisex
     *
     * @param $category
     * @return string
     */
    private function addGender($category)
    {
        if($category == null) return null;

        return $category->gender;

//        // Make sure category is in lowercase
//        $category = strtolower($category->category);
//        $category = trim($category);
//
//        // Definitely male
//        $maleCategories = ['kleding heren'];
//        if(in_array($category, $maleCategories)) return 'male';
//
//        // Definitely female
//        $femaleCategories = ['kleding dames','sieraden'];
//        if(in_array($category, $femaleCategories)) return 'female';

        // Unknown
    }

    /*
     * Return color name
     */
    protected function getColor($hex)
    {
        #color category
        if(empty($hex)) $hex = 'ffffff';
        $hexR = substr($hex,0,2);
        $hexG = substr($hex,2,2);
        $hexB = substr($hex,4,2);

        $decR = hexdec($hexR);
        $decG = hexdec($hexG);
        $decB = hexdec($hexB);

        $hsl = rgbhsv($decR,$decG,$decB);
        return returnColorName($hsl);
    }

}