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using System.Diagnostics.CodeAnalysis;
using System.Net.Http.Json;
using System.Reflection;
using System.Text.Json;
using System.Text.Json.Serialization;
using System.Web;
using MatrixRoomUtils.Core.Extensions;
namespace MatrixRoomUtils.Core;
public class Room
{
private static SemaphoreSlim _semaphore = new SemaphoreSlim(16, 16);
private readonly HttpClient _httpClient;
public string RoomId { get; set; }
public Room(HttpClient httpClient, string roomId)
{
_httpClient = httpClient;
RoomId = roomId;
}
public async Task<JsonElement?> GetStateAsync(string type, string state_key = "", bool logOnFailure = false)
{
await _semaphore.WaitAsync();
var url = $"/_matrix/client/v3/rooms/{RoomId}/state";
var stateCombo = "";
if (!string.IsNullOrEmpty(state_key)) stateCombo += $"{type}/{state_key}";
else if (!string.IsNullOrEmpty(type)) stateCombo += $"{type}";
if (!string.IsNullOrEmpty(stateCombo)) url += $"/{stateCombo}";
var cache_key = "room_states#" + RoomId;
if (!RuntimeCache.GenericResponseCache.ContainsKey(cache_key))
{
Console.WriteLine($"[!!] No cache for {cache_key}, creating...");
RuntimeCache.GenericResponseCache.Add(cache_key, new ObjectCache<object?>()
{
Name = cache_key
});
}
var cache = RuntimeCache.GenericResponseCache[cache_key];
if (cache.ContainsKey(stateCombo))
{
if (cache[stateCombo].ExpiryTime > DateTime.Now)
{
// Console.WriteLine($"[:3] Found cached state: {RuntimeCache.GenericResponseCache[cache_key][url].Result}");
_semaphore.Release();
return (JsonElement?) cache[stateCombo].Result;
}
else
{
Console.WriteLine($"[!!] Cached state expired at {cache[stateCombo].ExpiryTime}: {cache[stateCombo].Result}");
if(cache[stateCombo].ExpiryTime == null)Console.WriteLine("Exiryt time was null");
}
}
// else
// {
// Console.WriteLine($"[!!] No cached state for {url}");
// }
var res = await _httpClient.GetAsync(url);
if (!res.IsSuccessStatusCode)
{
if (logOnFailure) Console.WriteLine($"{RoomId}/{state_key}/{type} - got status: {res.StatusCode}");
_semaphore.Release();
return null;
}
var result = await res.Content.ReadFromJsonAsync<JsonElement>();
var expiryTime = type switch
{
"m.room.name" => TimeSpan.FromMinutes(30),
"org.matrix.mjolnir.shortcode" => TimeSpan.FromHours(4),
"" => TimeSpan.FromSeconds(0),
_ => TimeSpan.FromMinutes(15)
};
if(!string.IsNullOrWhiteSpace(type) && !string.IsNullOrWhiteSpace(state_key))
cache[stateCombo] = new GenericResult<object>()
{
Result = result,
ExpiryTime = DateTime.Now.Add(expiryTime)
};
_semaphore.Release();
return result;
}
public async Task<T?> GetStateAsync<T>(string type, string state_key = "", bool logOnFailure = false)
{
var res = await GetStateAsync(type, state_key, logOnFailure);
if (res == null) return default;
return res.Value.Deserialize<T>();
}
public async Task<string> GetNameAsync()
{
var res = await GetStateAsync("m.room.name");
if (!res.HasValue)
{
Console.WriteLine($"Room {RoomId} has no name!");
return RoomId;
}
var resn = res?.TryGetProperty("name", out var name) ?? false ? name.GetString() ?? RoomId : RoomId;
//Console.WriteLine($"Got name: {resn}");
return resn;
}
public async Task JoinAsync(string[]? homeservers = null)
{
string join_url = $"/_matrix/client/r0/join/{HttpUtility.UrlEncode(RoomId)}";
Console.WriteLine($"Calling {join_url} with {(homeservers == null ? 0 : homeservers.Length)} via's...");
if(homeservers == null || homeservers.Length == 0) homeservers = new[] { RoomId.Split(':')[1] };
var full_join_url = $"{join_url}?server_name=" + string.Join("&server_name=", homeservers);
var res = await _httpClient.PostAsync(full_join_url, null);
}
public async Task<List<string>> GetMembersAsync()
{
var res = await GetStateAsync("");
if (!res.HasValue) return new List<string>();
var members = new List<string>();
foreach (var member in res.Value.EnumerateArray())
{
if(member.GetProperty("Type").GetString() != "m.room.member") continue;
var member_id = member.GetProperty("StateKey").GetString();
members.Add(member_id);
}
return members;
}
public async Task<List<string>> GetAliasesAsync()
{
var res = await GetStateAsync("m.room.aliases");
if (!res.HasValue) return new List<string>();
var aliases = new List<string>();
foreach (var alias in res.Value.GetProperty("aliases").EnumerateArray())
{
aliases.Add(alias.GetString() ?? "");
}
return aliases;
}
public async Task<string> GetCanonicalAliasAsync()
{
var res = await GetStateAsync("m.room.canonical_alias");
if (!res.HasValue) return "";
return res.Value.GetProperty("alias").GetString() ?? "";
}
public async Task<string> GetTopicAsync()
{
var res = await GetStateAsync("m.room.topic");
if (!res.HasValue) return "";
return res.Value.GetProperty("topic").GetString() ?? "";
}
public async Task<string> GetAvatarUrlAsync()
{
var res = await GetStateAsync("m.room.avatar");
if (!res.HasValue) return "";
return res.Value.GetProperty("url").GetString() ?? "";
}
public async Task<JoinRules> GetJoinRuleAsync()
{
var res = await GetStateAsync("m.room.join_rules");
if (!res.HasValue) return new JoinRules();
return res.Value.Deserialize<JoinRules>() ?? new JoinRules();
}
public async Task<string> GetHistoryVisibilityAsync()
{
var res = await GetStateAsync("m.room.history_visibility");
if (!res.HasValue) return "";
return res.Value.GetProperty("history_visibility").GetString() ?? "";
}
public async Task<string> GetGuestAccessAsync()
{
var res = await GetStateAsync("m.room.guest_access");
if (!res.HasValue) return "";
return res.Value.GetProperty("guest_access").GetString() ?? "";
}
public async Task<CreateEvent> GetCreateEventAsync()
{
var res = await GetStateAsync("m.room.create");
if (!res.HasValue) return new CreateEvent();
res.FindExtraJsonFields(typeof(CreateEvent));
return res.Value.Deserialize<CreateEvent>() ?? new CreateEvent();
}
}
public class CreateEvent
{
[JsonPropertyName("creator")]
public string Creator { get; set; }
[JsonPropertyName("room_version")]
public string RoomVersion { get; set; }
[JsonPropertyName("type")]
public string? Type { get; set; }
[JsonPropertyName("predecessor")]
public object? Predecessor { get; set; }
[JsonPropertyName("m.federate")]
public bool Federate { get; set; }
}
public class JoinRules
{
private const string Public = "public";
private const string Invite = "invite";
private const string Knock = "knock";
[JsonPropertyName("join_rule")]
public string JoinRule { get; set; }
[JsonPropertyName("allow")]
public List<string> Allow { get; set; }
}
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