From 33cb1723eeaa5727e585cade26ea0585b4fd689a Mon Sep 17 00:00:00 2001
From: Mike Koch <mkoch227@gmail.com>
Date: Mon, 15 Feb 2016 22:14:24 -0500
Subject: [PATCH] Display category colors on calendar

---
 admin/calendar.php                    |  6 +++---
 internal-api/dao/calendar_dao.php     |  5 ++++-
 js/calendar/mods-for-hesk-calendar.js | 28 +++++++++++++++++++++++++--
 3 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/admin/calendar.php b/admin/calendar.php
index d96269cb..4bec0989 100644
--- a/admin/calendar.php
+++ b/admin/calendar.php
@@ -50,7 +50,7 @@ hesk_isLoggedIn();
 define('MFH_CALENDAR', 1);
 
 // Get categories for the dropdown
-$rs = hesk_dbQuery("SELECT `id`, `name` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` ORDER BY `cat_order`");
+$rs = hesk_dbQuery("SELECT `id`, `name`, `color` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` ORDER BY `cat_order`");
 $categories = [];
 while ($row = hesk_dbFetchAssoc($rs)) {
     $categories[] = $row;
@@ -127,7 +127,7 @@ require_once(HESK_PATH . 'inc/show_admin_nav.inc.php');
                                             echo '<option value="">'.$hesklang['select'].'</option>';
                                         }
                                         foreach ($categories as $category): ?>
-                                            <option value="<?php echo $category['id']; ?>">
+                                            <option value="<?php echo $category['id']; ?>" data-color="<?php echo htmlspecialchars($category['color']); ?>">
                                                 <?php echo $category['name']; ?>
                                             </option>
                                         <?php endforeach; ?>
@@ -264,7 +264,7 @@ require_once(HESK_PATH . 'inc/show_admin_nav.inc.php');
                                             echo '<option value="">'.$hesklang['select'].'</option>';
                                         }
                                         foreach ($categories as $category): ?>
-                                            <option value="<?php echo $category['id']; ?>">
+                                            <option value="<?php echo $category['id']; ?>" data-color="<?php echo $category['color']; ?>">
                                                 <?php echo $category['name']; ?>
                                             </option>
                                         <?php endforeach; ?>
diff --git a/internal-api/dao/calendar_dao.php b/internal-api/dao/calendar_dao.php
index 83c2a780..30218987 100644
--- a/internal-api/dao/calendar_dao.php
+++ b/internal-api/dao/calendar_dao.php
@@ -1,7 +1,8 @@
 <?php
 
 function get_events($start, $end, $hesk_settings) {
-    $sql = "SELECT `events`.*, `categories`.`name` AS `category_name` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "calendar_event` AS `events`
+    $sql = "SELECT `events`.*, `categories`.`name` AS `category_name`, `categories`.`color` AS `category_color`
+        FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "calendar_event` AS `events`
         INNER JOIN `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` AS `categories`
             ON `events`.`category` = `categories`.`id`
         WHERE `start` >= FROM_UNIXTIME(" . hesk_dbEscape($start)
@@ -21,6 +22,7 @@ function get_events($start, $end, $hesk_settings) {
         $event['comments'] = $row['comments'];
         $event['categoryId'] = $row['category'];
         $event['categoryName'] = $row['category_name'];
+        $event['categoryColor'] = $row['category_color'];
         $events[] = $event;
     }
 
@@ -41,6 +43,7 @@ function get_events($start, $end, $hesk_settings) {
         $event['url'] = $hesk_settings['hesk_url'] . '/' . $hesk_settings['admin_dir'] . '/admin_ticket.php?track=' . $event['trackingId'];
         $event['categoryId'] = $row['category'];
         $event['categoryName'] = $row['category_name'];
+        $event['categoryColor'] = 'green';
         $events[] = $event;
     }
 
diff --git a/js/calendar/mods-for-hesk-calendar.js b/js/calendar/mods-for-hesk-calendar.js
index 47978f0b..ee643529 100644
--- a/js/calendar/mods-for-hesk-calendar.js
+++ b/js/calendar/mods-for-hesk-calendar.js
@@ -203,7 +203,8 @@ $(document).ready(function() {
             comments: $('#create-form textarea[name="comments"]').val(),
             categoryId: $('#create-form select[name="category"]').val(),
             action: 'create',
-            type: 'CALENDAR'
+            type: 'CALENDAR',
+            categoryColor: $('#create-form select[name="category"] :selected').attr('data-color')
         };
 
         $.ajax({
@@ -303,10 +304,33 @@ function buildEvent(id, dbObject) {
         location: dbObject.location,
         type: dbObject.type,
         categoryId: dbObject.categoryId,
-        categoryName: dbObject.categoryName
+        categoryName: dbObject.categoryName,
+        color: dbObject.categoryColor,
+        textColor: calculateTextColor(dbObject.categoryColor)
     };
 }
 
+function calculateTextColor(color) {
+    var red = 0;
+    var green = 0;
+    var blue = 0;
+
+    // If hex value is 3 characters, take each value and concatenate it to itself
+    if (color.length === 3) {
+        red = parseInt(color.substring(1, 2), 16);
+        green = parseInt(color.substring(2, 3), 16);
+        blue = parseInt(color.substring(3, 4), 16);
+    } else {
+        red = parseInt(color.substring(1, 3), 16);
+        green = parseInt(color.substring(3, 5), 16);
+        blue = parseInt(color.substring(5, 7), 16);
+    }
+
+    var gray = red * 0.299 + green * 0.587 + blue * 0.114;
+
+    return gray > 186 ? 'black' : 'white';
+}
+
 function displayCreateModal(date, viewName) {
     var $form = $('#create-form');
     $form.find('input[name="name"]').val('').end()