143 lines
3.4 KiB
C#
143 lines
3.4 KiB
C#
/*
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* Copyright (c) 2023 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.Collections.Generic;
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using SafeExamBrowser.Logging.Contracts;
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using SafeExamBrowser.Settings.Logging;
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namespace SafeExamBrowser.ResetUtility.Procedure
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{
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internal class Log : ProcedureStep
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{
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public Log(ProcedureContext context) : base(context)
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{
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}
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internal override ProcedureStepResult Execute()
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{
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var log = Logger.GetLog();
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var offset = 0;
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for (var key = default(ConsoleKey); key != ConsoleKey.Enter; key = Console.ReadKey(true).Key)
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{
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offset = UpdateOffset(key, offset, log.Count);
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InitializeConsole();
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PrintInstructions();
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PrintLogSection(log, offset);
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}
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return ProcedureStepResult.Continue;
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}
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internal override ProcedureStep GetNextStep()
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{
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return new MainMenu(Context);
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}
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private void PrintInstructions()
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{
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Console.WriteLine("Use the up/down arrow keys to scroll. Press enter to return to the main menu.");
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Console.WriteLine();
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}
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private void PrintLogSection(IList<ILogContent> log, int offset)
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{
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var count = 0;
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foreach (var item in log)
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{
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if (offset > log.IndexOf(item))
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{
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continue;
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}
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if (item is ILogMessage message)
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{
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PrintMessage(message);
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}
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if (item is ILogText text)
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{
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PrintText(text);
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}
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count++;
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if (Console.CursorTop >= Console.BufferHeight - 3)
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{
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break;
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}
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}
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Console.SetCursorPosition(0, Console.BufferHeight - 3);
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Console.WriteLine();
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Console.WriteLine($"Showing entries {offset + 1} - {offset + count} of total {log.Count}.");
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}
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private int UpdateOffset(ConsoleKey key, int offset, int total)
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{
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if (key == ConsoleKey.DownArrow)
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{
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offset = offset == total - 1 ? offset : offset + 1;
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}
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if (key == ConsoleKey.UpArrow)
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{
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offset = offset == 0 ? offset : offset - 1;
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}
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return offset;
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}
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private void PrintMessage(ILogMessage message)
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{
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var date = message.DateTime.ToString("HH:mm:ss.fff");
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var severity = message.Severity.ToString().ToUpper();
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var threadId = message.ThreadInfo.Id < 10 ? $"0{message.ThreadInfo.Id}" : message.ThreadInfo.Id.ToString();
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var threadName = message.ThreadInfo.HasName ? ": " + message.ThreadInfo.Name : string.Empty;
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var threadInfo = $"[{threadId}{threadName}]";
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Console.ForegroundColor = ConsoleColor.DarkGray;
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Console.Write($"{date} {threadInfo} - ");
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Console.ForegroundColor = GetColorFor(message.Severity);
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Console.WriteLine($"{severity}: { message.Message}");
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Console.ForegroundColor = ForegroundColor;
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}
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private void PrintText(ILogText text)
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{
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var isHeader = text.Text.StartsWith("/* ");
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var isComment = text.Text.StartsWith("# ");
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if (isHeader || isComment)
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{
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Console.ForegroundColor = ConsoleColor.DarkGreen;
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}
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Console.WriteLine(text.Text);
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Console.ForegroundColor = ForegroundColor;
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}
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private ConsoleColor GetColorFor(LogLevel severity)
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{
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switch (severity)
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{
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case LogLevel.Debug:
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return ConsoleColor.DarkGray;
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case LogLevel.Error:
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return ConsoleColor.Red;
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case LogLevel.Warning:
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return ConsoleColor.DarkYellow;
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default:
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return ConsoleColor.DarkBlue;
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}
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}
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}
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}
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