From 43a8c0fe50529a6b4161d12f087925c06ce37574 Mon Sep 17 00:00:00 2001
From: Max
Date: Mon, 11 Feb 2019 01:44:37 +0100
Subject: First version of correct link generation for inclusion of special
 offers.

---
 angebote/angebote.php      |  4 +++-
 angebote/inc/functions.php | 43 +++++++++++++++++++++++++++++++++++++++++++
 functions.php              |  9 +++++++++
 sass/theme/_offer.scss     |  4 ++++
 4 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 angebote/inc/functions.php

diff --git a/angebote/angebote.php b/angebote/angebote.php
index b6129fe..5409b55 100644
--- a/angebote/angebote.php
+++ b/angebote/angebote.php
@@ -7,6 +7,8 @@ if ( ! defined( 'ABSPATH' ) ) {
         exit; // Exit if accessed directly.
 }
 
+require_once __DIR__ . '/inc/functions.php';
+
 get_header();
 
 $container   = get_theme_mod( 'understrap_container_type' );
@@ -23,7 +25,7 @@ $container   = get_theme_mod( 'understrap_container_type' );
 			<main class="site-main offer-page" id="main">
 
 <?php
-        echo file_get_contents("https://angebote.fuselkoenig.de/wp/whisky?page=00");
+        echo file_get_contents( create_offer_link() );
 ?>
 			</main><!-- #main -->
 
diff --git a/angebote/inc/functions.php b/angebote/inc/functions.php
new file mode 100644
index 0000000..de9a03d
--- /dev/null
+++ b/angebote/inc/functions.php
@@ -0,0 +1,43 @@
+<?php
+
+if ( ! defined( 'ABSPATH' ) ) {
+        exit; // Exit if accessed directly.
+}
+
+function create_offer_link() {
+        global $wp;
+
+        // get current url with query string.
+        $current_url =  home_url( $wp->request );
+        $page =  str_replace("https://www.fuselkoenig.de/angebote/whisky/", "", $current_url);
+
+	/*
+	 * sanitization of query variable
+	 */
+	$sort = get_query_var('_sort', 1);
+	switch ( $sort ) {
+	case("price"):
+	case("name"):
+	case("shop"):
+	case("procent"):
+	case("time"):
+		break;
+	default:
+		$sort = "";
+		break;
+	}
+
+	/*
+	 * sanitization of query variable
+	 */
+	$order = get_query_var('_order', 1);
+	switch ( $order) {
+	case("asc"):
+	case("desc"):
+		break;
+	default:
+		$order = "";
+	}
+
+	return "https://angebote.fuselkoenig.de/wp/whisky?page=" . $page . "&_sort=" . $sort . "&_order=" . $order;
+}
diff --git a/functions.php b/functions.php
index 7eebc3f..7553f43 100644
--- a/functions.php
+++ b/functions.php
@@ -224,6 +224,15 @@ function comment_form_hide_cookies_consent( $fields ) {
 }
 add_filter( 'comment_form_default_fields', 'comment_form_hide_cookies_consent' );
 
+/**
+ * Allows to pass the parameter 'sort' and 'order' to WP pages.
+ */
+add_filter('query_vars', function ( $qvars ) {
+        $qvars[] = '_sort';
+        $qvars[] = '_order';
+        return $qvars;
+ } );
+
 /**
  * Function to get the clean title of a blog post.
  */
diff --git a/sass/theme/_offer.scss b/sass/theme/_offer.scss
index 9808149..14a9510 100644
--- a/sass/theme/_offer.scss
+++ b/sass/theme/_offer.scss
@@ -69,3 +69,7 @@
 .btn-group {
 	box-shadow: inherit;
 }
+
+.page-link {
+	font-size: 18px;
+}
-- 
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