From 0a27dd0ef01f25e48100515ad953759e9e0f4f76 Mon Sep 17 00:00:00 2001
From: Kiryl Kaveryn <kirylkaveryn@gmail.com>
Date: Fri, 16 Aug 2024 20:16:31 +0400
Subject: [PATCH] [kml] add GetRandomPredefinedColor to get a color for the
 recorded track

Signed-off-by: Kiryl Kaveryn <kirylkaveryn@gmail.com>
---
 kml/types.cpp | 8 ++++++++
 kml/types.hpp | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/kml/types.cpp b/kml/types.cpp
index 713cbdeabf..4d5c06efec 100644
--- a/kml/types.cpp
+++ b/kml/types.cpp
@@ -6,6 +6,7 @@
 #include "base/stl_helpers.hpp"
 #include "base/string_utils.hpp"
 
+#include <random>
 
 namespace kml
 {
@@ -49,4 +50,11 @@ MultiGeometry mergeGeometry(std::vector<MultiGeometry> && aGeometries)
   return merged;
 }
 
+kml::PredefinedColor GetRandomPredefinedColor()
+{
+  // Simple time-based seed instead of random_device is enough.
+  static std::mt19937 gen(static_cast<uint8_t>(std::chrono::system_clock::now().time_since_epoch().count()));
+  static std::uniform_int_distribution<> distr(1, static_cast<uint8_t>(PredefinedColor::Count) - 1);
+  return static_cast<PredefinedColor>(distr(gen));
+}
 }  // namespace kml
diff --git a/kml/types.hpp b/kml/types.hpp
index 43f739c839..f70f6d405f 100644
--- a/kml/types.hpp
+++ b/kml/types.hpp
@@ -92,6 +92,8 @@ inline dp::Color ColorFromPredefinedColor(PredefinedColor color)
   }
 }
 
+kml::PredefinedColor GetRandomPredefinedColor();
+
 enum class AccessRules : uint8_t
 {
   // Do not change the order because of binary serialization.