Catalogger.NET/Catalogger.Backend/Services/IWebhookCache.cs

using Catalogger.Backend.Extensions;
using Remora.Discord.API;
using Remora.Discord.API.Abstractions.Objects;
using Remora.Rest.Core;

namespace Catalogger.Backend.Services;

public interface IWebhookCache
{
    Task<Webhook?> GetWebhookAsync(ulong channelId);
    Task SetWebhookAsync(ulong channelId, Webhook webhook);

    public async Task<Webhook> GetOrFetchWebhookAsync(ulong channelId, Func<Snowflake, Task<IWebhook>> fetch)
    {
        var webhook = await GetWebhookAsync(channelId);
        if (webhook != null) return webhook.Value;

        var discordWebhook = await fetch(DiscordSnowflake.New(channelId));
        webhook = new Webhook { Id = discordWebhook.ID.ToUlong(), Token = discordWebhook.Token.Value };
        await SetWebhookAsync(channelId, webhook.Value);
        return webhook.Value;
    }
}

public struct Webhook
{
    public required ulong Id { get; init; }
    public required string Token { get; init; }
}