LibMatrix/Services/WellKnownResolver/WellKnownResolvers/ServerWellKnownResolver.cs


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using System.Text.Json.Serialization;
using ArcaneLibs.Collections;
using Microsoft.Extensions.Logging;
using WellKnownType = LibMatrix.Services.WellKnownResolver.WellKnownResolvers.ServerWellKnown;
using ResultType = LibMatrix.Services.WellKnownResolver.WellKnownResolverService.WellKnownResolutionResult<
    LibMatrix.Services.WellKnownResolver.WellKnownResolvers.ServerWellKnown?
>;

namespace LibMatrix.Services.WellKnownResolver.WellKnownResolvers;

public class ServerWellKnownResolver(ILogger<ServerWellKnownResolver> logger, WellKnownResolverConfiguration configuration)
    : BaseWellKnownResolver<ServerWellKnown> {
    private static readonly SemaphoreCache<WellKnownResolverService.WellKnownResolutionResult<ServerWellKnown>> ClientWellKnownCache = new() {
        StoreNulls = false
    };

    public Task<ResultType> TryResolveWellKnown(string homeserver, WellKnownResolverConfiguration? config = null) {
        config ??= configuration;
        return ClientWellKnownCache.TryGetOrAdd(homeserver, async () => {
            logger.LogTrace($"Resolving client well-known: {homeserver}");

            WellKnownResolverService.WellKnownResolutionResult<ServerWellKnown> result =
                await TryGetWellKnownFromUrl($"https://{homeserver}/.well-known/matrix/server", WellKnownResolverService.WellKnownSource.Https);
            if (result.Content != null) return result;

            return result;
        });
    }
}

public class ServerWellKnown {
    [JsonPropertyName("m.server")]
    public string Homeserver { get; set; }
}