From ec9854212a509013de338779cdf53b9739808c0d Mon Sep 17 00:00:00 2001
From: Mbucari <mbucari1@gmail.com>
Date: Wed, 14 Jun 2023 10:58:37 -0600
Subject: [PATCH] Write error info to StdErr (#626)

---
 Source/LibationCli/Options/_OptionsBase.cs            | 10 +++++-----
 Source/LibationCli/Options/_ProcessableOptionsBase.cs |  6 +++++-
 Source/LibationCli/Program.cs                         |  2 +-
 3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/Source/LibationCli/Options/_OptionsBase.cs b/Source/LibationCli/Options/_OptionsBase.cs
index e1976adb..40578b75 100644
--- a/Source/LibationCli/Options/_OptionsBase.cs
+++ b/Source/LibationCli/Options/_OptionsBase.cs
@@ -18,11 +18,11 @@ namespace LibationCli
 			{
 				Environment.ExitCode = (int)ExitCode.RunTimeError;
 
-				Console.WriteLine("ERROR");
-				Console.WriteLine("=====");
-				Console.WriteLine(ex.Message);
-				Console.WriteLine();
-				Console.WriteLine(ex.StackTrace);
+				Console.Error.WriteLine("ERROR");
+				Console.Error.WriteLine("=====");
+				Console.Error.WriteLine(ex.Message);
+				Console.Error.WriteLine();
+				Console.Error.WriteLine(ex.StackTrace);
 			}
 		}
 
diff --git a/Source/LibationCli/Options/_ProcessableOptionsBase.cs b/Source/LibationCli/Options/_ProcessableOptionsBase.cs
index e4b255e1..664499c1 100644
--- a/Source/LibationCli/Options/_ProcessableOptionsBase.cs
+++ b/Source/LibationCli/Options/_ProcessableOptionsBase.cs
@@ -27,6 +27,7 @@ namespace LibationCli
 				}
 				catch (Exception ex)
 				{
+					Console.Error.WriteLine("CLI error. See log for more details.");
 					Serilog.Log.Logger.Error(ex, "CLI error");
 				}
 			};
@@ -54,12 +55,15 @@ namespace LibationCli
 					return;
 
 				foreach (var errorMessage in statusHandler.Errors)
+				{
+					Console.Error.WriteLine(errorMessage);
 					Serilog.Log.Logger.Error(errorMessage);
+				}
 			}
 			catch (Exception ex)
 			{
 				var msg = "Error processing book. Skipping. This book will be tried again on next attempt. For options of skipping or marking as error, retry with main Libation app.";
-				Console.WriteLine(msg + ". See log for more details.");
+				Console.Error.WriteLine(msg + ". See log for more details.");
 				Serilog.Log.Logger.Error(ex, $"{msg} {{@DebugInfo}}", new { Book = libraryBook.LogFriendly() });
 			}
 		}
diff --git a/Source/LibationCli/Program.cs b/Source/LibationCli/Program.cs
index e1d2c32f..3bdce3da 100644
--- a/Source/LibationCli/Program.cs
+++ b/Source/LibationCli/Program.cs
@@ -70,7 +70,7 @@ namespace LibationCli
 
 			if (errorsList.Any(e => e.Tag.In(ErrorType.NoVerbSelectedError)))
 			{
-				Console.WriteLine("No verb selected");
+				Console.Error.WriteLine("No verb selected");
 				return;
 			}