RegexBot/Services/Logging/LoggingService.cs
Noi 1149f2800d Reorganized project
Moved modules into the assembly itself to simplify development of
further features and reduce complexity in building this project.

Additionally, many small adjustments were made, including:
- Add documentation to most public methods that had it missing
- Minor style updates
- Updated readme to reflect near-completion of this rewrite
- Remove any last remaining references to old project name Kerobot
- Update dependencies
2022-07-20 18:55:08 -07:00

89 lines
3.4 KiB
C#

using Discord;
using Discord.Webhook;
using System.Reflection;
using System.Text;
namespace RegexBot.Services.Logging;
/// <summary>
/// Implements program-wide logging.
/// </summary>
class LoggingService : Service {
// NOTE: Service.Log's functionality is implemented here. DO NOT use within this class.
private readonly DiscordWebhookClient _instLogWebhook;
private readonly string? _logBasePath;
internal LoggingService(RegexbotClient bot) : base(bot) {
_instLogWebhook = new DiscordWebhookClient(bot.Config.InstanceLogTarget);
_logBasePath = Path.GetDirectoryName(Assembly.GetEntryAssembly()!.Location)
+ Path.DirectorySeparatorChar + "logs";
try {
if (!Directory.Exists(_logBasePath)) Directory.CreateDirectory(_logBasePath);
Directory.GetFiles(_logBasePath);
} catch (Exception ex) when (ex is IOException or UnauthorizedAccessException) {
_logBasePath = null;
Output(Name, "Cannot create or access logging directory. File logging will be disabled.");
}
bot.DiscordClient.Log += DiscordClient_Log;
}
/// <summary>
/// Discord.Net logging events handled here.
/// Only events with high importance are stored. Others are just printed to console.
/// </summary>
private Task DiscordClient_Log(LogMessage arg) {
var msg = $"[{Enum.GetName(typeof(LogSeverity), arg.Severity)}] {arg.Message}";
if (arg.Exception != null) msg += "\n```\n" + arg.Exception.ToString() + "\n```";
var important = arg.Severity != LogSeverity.Info;
switch (arg.Message) { // Prevent webhook logs for these 'important' Discord.Net messages
case "Connecting":
case "Connected":
case "Ready":
case "Disconnecting":
case "Disconnected":
case "Resumed previous session":
case "Failed to resume previous session":
important = false;
break;
}
DoLog(important, "Discord.Net", msg);
return Task.CompletedTask;
}
private void Output(string source, string message) {
var now = DateTimeOffset.UtcNow;
var output = new StringBuilder();
var prefix = $"[{now:u}] [{source}] ";
foreach (var line in message.Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None)) {
output.Append(prefix).AppendLine(line);
}
var outstr = output.ToString();
Console.Write(outstr);
if (_logBasePath != null) {
var filename = _logBasePath + Path.DirectorySeparatorChar + $"{now:yyyy-MM}.log";
File.AppendAllText(filename, outstr, Encoding.UTF8);
}
}
// Hooked
internal void DoLog(bool report, string source, string? message) {
message ??= "(null)";
Output(source, message);
if (report) Task.Run(() => ReportInstanceWebhook(source, message));
}
private async Task ReportInstanceWebhook(string source, string message) {
try {
EmbedBuilder e = new() {
Footer = new EmbedFooterBuilder() { Text = source },
Timestamp = DateTimeOffset.UtcNow,
Description = message
};
await _instLogWebhook.SendMessageAsync(embeds: new[] { e.Build() });
} catch (Exception ex) {
DoLog(false, Name, "Failed to send message to reporting channel: " + ex.Message);
}
}
}