ProviderFactory.cs

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using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Globalization;
using Tgstation.Server.Api.Models;
using Tgstation.Server.Host.Components.Chat.Providers;
using Tgstation.Server.Host.Core;

namespace Tgstation.Server.Host.Components.Chat
{
    sealed class ProviderFactory : IProviderFactory
    {
        readonly IApplication application;

        readonly IAsyncDelayer asyncDelayer;

        readonly ILoggerFactory loggerFactory;

        public ProviderFactory(IApplication application, IAsyncDelayer asyncDelayer, ILoggerFactory loggerFactory)
        {
            this.loggerFactory = loggerFactory ?? throw new ArgumentNullException(nameof(loggerFactory));
            this.asyncDelayer = asyncDelayer ?? throw new ArgumentNullException(nameof(asyncDelayer));
            this.application = application ?? throw new ArgumentNullException(nameof(application));
        }

        public IProvider CreateProvider(Api.Models.Internal.ChatBot settings)
        {
            if (settings == null)
                throw new ArgumentNullException(nameof(settings));
            var builder = settings.ConnectionStringBuilder;
            if (builder == null || !builder.Valid)
                throw new InvalidOperationException("Invalid ChatConnectionStringBuilder!");
            switch (settings.Provider)
            {
                case ChatProvider.Irc:
                    var ircBuilder = (IrcConnectionStringBuilder)builder;
                    return new IrcProvider(application, asyncDelayer, loggerFactory.CreateLogger<IrcProvider>(), ircBuilder.Address, ircBuilder.Port.Value, ircBuilder.Nickname, ircBuilder.Password, ircBuilder.PasswordType, ircBuilder.UseSsl.Value);
                case ChatProvider.Discord:
                    var discordBuilder = (DiscordConnectionStringBuilder)builder;
                    return new DiscordProvider(loggerFactory.CreateLogger<DiscordProvider>(), discordBuilder.BotToken);
                default:
                    throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, "Invalid ChatProvider: {0}", settings.Provider));
            }
        }
    }
}