83 lines
2.7 KiB
C#
83 lines
2.7 KiB
C#
using System;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Threading.Tasks;
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using DiscordBotCore.Interfaces;
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using DiscordBotCore.Others;
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namespace DiscordBotCore.Loaders;
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internal class Loader
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{
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internal delegate void FileLoadedHandler(FileLoaderResult result);
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internal delegate void PluginLoadedHandler(PluginLoadResultData result);
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internal event FileLoadedHandler? OnFileLoadedException;
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internal event PluginLoadedHandler? OnPluginLoaded;
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internal async Task Load()
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{
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var installedPlugins = await Application.CurrentApplication.PluginManager.GetInstalledPlugins();
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var files = installedPlugins.Where(plugin=>plugin.IsEnabled).Select(plugin => plugin.FilePath).ToArray();
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foreach (var file in files)
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{
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try
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{
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Assembly.LoadFrom(file);
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}
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catch
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{
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OnFileLoadedException?.Invoke(new FileLoaderResult(file, $"Failed to load file {file}"));
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}
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}
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await LoadEverythingOfType<IDbEvent>();
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await LoadEverythingOfType<IDbCommand>();
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await LoadEverythingOfType<IDbSlashCommand>();
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await LoadEverythingOfType<ICommandAction>();
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}
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private async Task LoadEverythingOfType<T>()
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{
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var types = AppDomain.CurrentDomain.GetAssemblies()
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.SelectMany(s => s.GetTypes())
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.Where(p => typeof(T).IsAssignableFrom(p) && !p.IsInterface);
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foreach (var type in types)
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{
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try
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{
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var plugin = (T?)Activator.CreateInstance(type);
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if (plugin is null)
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{
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throw new Exception($"Failed to create instance of plugin with type {type.FullName} [{type.Assembly}]");
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}
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var pluginType = plugin switch
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{
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IDbEvent => PluginType.EVENT,
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IDbCommand => PluginType.COMMAND,
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IDbSlashCommand => PluginType.SLASH_COMMAND,
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ICommandAction => PluginType.ACTION,
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_ => PluginType.UNKNOWN
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};
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if (pluginType == PluginType.UNKNOWN)
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throw new Exception($"Unknown plugin type for plugin with type {type.FullName} [{type.Assembly}]");
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OnPluginLoaded?.Invoke(new PluginLoadResultData(type.FullName, pluginType, true, plugin: plugin));
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}
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catch (Exception ex)
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{
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OnPluginLoaded?.Invoke(new PluginLoadResultData(type.FullName, PluginType.UNKNOWN, false, ex.Message));
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}
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}
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}
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}
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