From 1fe4ecb3aff0db68bb8382b0d1498348d1bf4b0f Mon Sep 17 00:00:00 2001
From: Alexey Golub <tyrrrz@gmail.com>
Date: Wed, 29 Jul 2020 20:58:38 +0300
Subject: [PATCH] Truncate long file names in MediaDownloader

Fixes #344
---
 DiscordChatExporter.Domain/Exporting/MediaDownloader.cs      | 2 +-
 .../Internal/Extensions/StringExtensions.cs                  | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/DiscordChatExporter.Domain/Exporting/MediaDownloader.cs b/DiscordChatExporter.Domain/Exporting/MediaDownloader.cs
index 570284b6..7cdb2332 100644
--- a/DiscordChatExporter.Domain/Exporting/MediaDownloader.cs
+++ b/DiscordChatExporter.Domain/Exporting/MediaDownloader.cs
@@ -46,7 +46,7 @@ namespace DiscordChatExporter.Domain.Exporting
             var originalFileName = Regex.Match(url, @".+/([^?]*)").Groups[1].Value;
 
             var fileName = !string.IsNullOrWhiteSpace(originalFileName)
-                ? originalFileName
+                ? $"{Path.GetFileNameWithoutExtension(originalFileName).Truncate(50)}{Path.GetExtension(originalFileName)}"
                 : GetRandomFileName();
 
             return PathEx.EscapePath(fileName);
diff --git a/DiscordChatExporter.Domain/Internal/Extensions/StringExtensions.cs b/DiscordChatExporter.Domain/Internal/Extensions/StringExtensions.cs
index 91344910..be6d74b3 100644
--- a/DiscordChatExporter.Domain/Internal/Extensions/StringExtensions.cs
+++ b/DiscordChatExporter.Domain/Internal/Extensions/StringExtensions.cs
@@ -4,6 +4,11 @@ namespace DiscordChatExporter.Domain.Internal.Extensions
 {
     internal static class StringExtensions
     {
+        public static string Truncate(this string str, int charCount) =>
+            str.Length > charCount
+                ? str.Substring(0, charCount)
+                : str;
+
         public static StringBuilder AppendIfNotEmpty(this StringBuilder builder, char value) =>
             builder.Length > 0
                 ? builder.Append(value)