Delta-v/Content.DiscordBot/Program.cs

using System.Text.Json;
using Content.DiscordBot;
using Content.Server.Database;
using Discord;
using Discord.Commands;
using Discord.Interactions;
using Discord.WebSocket;
using Microsoft.EntityFrameworkCore;

var client = new DiscordSocketClient();

client.Log += msg => Console.Out.WriteLineAsync($"[{msg.Severity}] {msg.Message}");

string? token = null;
string? connectionString = null;
if (File.Exists("config.json"))
{
    var config = await JsonSerializer.DeserializeAsync<Config>(File.OpenRead("config.json")) ?? new Config();
    token = config.Token;
}

#if DEBUG
if (Environment.GetEnvironmentVariable("DISCORD_TOKEN") is { } envToken)
    token = envToken;

if (Environment.GetEnvironmentVariable("DATABASE_STRING") is { } dbString)
    connectionString = dbString;
#endif

if (string.IsNullOrWhiteSpace(token))
    throw new ArgumentException("No token found.");

if (string.IsNullOrWhiteSpace(connectionString))
    throw new ArgumentException("No database connection string found.");

await client.LoginAsync(TokenType.Bot, token);
await client.StartAsync();

var builder = new DbContextOptionsBuilder<PostgresServerDbContext>();
builder.UseNpgsql(connectionString);
var db = new PostgresServerDbContext(builder.Options);
// await db.Database.MigrateAsync();

var interaction = new InteractionService(client);
var handler = new CommandHandler(client, new CommandService(), interaction, db);
await handler.InstallCommandsAsync();

// Block this task until the program is closed.
await Task.Delay(-1);