8 files changed, 280 insertions, 0 deletions
diff --git a/MatrixRoomUtils.Core/Authentication/MatrixAccount.cs b/MatrixRoomUtils.Core/Authentication/MatrixAccount.cs
new file mode 100644
index 0000000..4180df5
--- /dev/null
+++ b/MatrixRoomUtils.Core/Authentication/MatrixAccount.cs
@@ -0,0 +1,93 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+using MatrixRoomUtils.Responses;
+
+namespace MatrixRoomUtils.Authentication;
+
+public class MatrixAccount
+{
+    public static async Task<LoginResponse> Login(string homeserver, string username, string password)
+    {
+        Console.WriteLine($"Logging in to {homeserver} as {username}...");
+        homeserver = await ResolveHomeserverFromWellKnown(homeserver);
+        var hc = new HttpClient();
+        var payload = new
+        {
+            type = "m.login.password",
+            identifier = new
+            {
+                type = "m.id.user",
+                user = username
+            },
+            password = password,
+            initial_device_display_name = "Rory&::MatrixRoomUtils"
+        };
+        Console.WriteLine($"Sending login request to {homeserver}...");
+        var resp = await hc.PostAsJsonAsync($"{homeserver}/_matrix/client/r0/login", payload);
+        Console.WriteLine($"Login: {resp.StatusCode}");
+        var data = await resp.Content.ReadFromJsonAsync<JsonElement>();
+        if (!resp.IsSuccessStatusCode) Console.WriteLine("Login: " + data.ToString());
+        if (data.TryGetProperty("retry_after_ms", out var retryAfter))
+        {
+            Console.WriteLine($"Login: Waiting {retryAfter.GetInt32()}ms before retrying");
+            await Task.Delay(retryAfter.GetInt32());
+            return await Login(homeserver, username, password);
+        }
+
+        return data.Deserialize<LoginResponse>();
+        //var token = data.GetProperty("access_token").GetString();
+        //return token;
+    }
+
+    public static async Task<ProfileResponse> GetProfile(string homeserver, string mxid)
+    {
+        Console.WriteLine($"Fetching profile for {mxid} on {homeserver}...");
+        homeserver = await ResolveHomeserverFromWellKnown(homeserver);
+        var hc = new HttpClient();
+        var resp = await hc.GetAsync($"{homeserver}/_matrix/client/r0/profile/{mxid}");
+        var data = await resp.Content.ReadFromJsonAsync<JsonElement>();
+        if (!resp.IsSuccessStatusCode) Console.WriteLine("Profile: " + data.ToString());
+        return data.Deserialize<ProfileResponse>();
+    }
+
+    public static async Task<string> ResolveHomeserverFromWellKnown(string homeserver)
+    {
+        using var hc = new HttpClient();
+        Console.WriteLine($"Resolving homeserver: {homeserver}");
+        if (!homeserver.StartsWith("http")) homeserver = "https://" + homeserver;
+
+        if (await CheckSuccessStatus($"{homeserver}/.well-known/matrix/client"))
+        {
+            var resp = await hc.GetFromJsonAsync<JsonElement>($"{homeserver}/.well-known/matrix/client");
+            var hs = resp.GetProperty("m.homeserver").GetProperty("base_url").GetString();
+            return hs;
+        }
+        Console.WriteLine($"No client well-known...");
+        if (await CheckSuccessStatus($"{homeserver}/.well-known/matrix/server"))
+        {
+            var resp = await hc.GetFromJsonAsync<JsonElement>($"{homeserver}/.well-known/matrix/server");
+            var hs = resp.GetProperty("m.server").GetString();
+            return hs;
+        }
+        Console.WriteLine($"No server well-known...");
+        if (await CheckSuccessStatus($"{homeserver}/_matrix/client/versions")) return homeserver;
+        Console.WriteLine($"Failed to resolve homeserver, not on {homeserver}, nor do client or server well-knowns exist!");
+        throw new InvalidDataException($"Failed to resolve homeserver, not on {homeserver}, nor do client or server well-knowns exist!");
+    }
+
+    private static async Task<bool> CheckSuccessStatus(string url)
+    {
+        //cors causes failure, try to catch
+        try
+        {
+            using var hc = new HttpClient();
+            var resp = await hc.GetAsync(url);
+            return resp.IsSuccessStatusCode;
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine($"Failed to check success status: {e.Message}");
+            return false;
+        }
+    }
+}
\ No newline at end of file
diff --git a/MatrixRoomUtils.Core/Extensions/ObjectExtensions.cs b/MatrixRoomUtils.Core/Extensions/ObjectExtensions.cs
new file mode 100644
index 0000000..cf798ce
--- /dev/null
+++ b/MatrixRoomUtils.Core/Extensions/ObjectExtensions.cs
@@ -0,0 +1,14 @@
+using System.Text.Json;
+
+namespace MatrixRoomUtils.Extensions;
+
+public static class ObjectExtensions
+{
+    public static string ToJson(this object obj, bool indent = true, bool ignoreNull = false)
+    {
+        var jso = new JsonSerializerOptions();
+        if(indent) jso.WriteIndented = true;
+        if(ignoreNull) jso.IgnoreNullValues = true;
+        return JsonSerializer.Serialize(obj, jso);
+    }
+}
\ No newline at end of file
diff --git a/MatrixRoomUtils.Core/Extensions/StringExtensions.cs b/MatrixRoomUtils.Core/Extensions/StringExtensions.cs
new file mode 100644
index 0000000..e02f0b9
--- /dev/null
+++ b/MatrixRoomUtils.Core/Extensions/StringExtensions.cs
@@ -0,0 +1,17 @@
+using MatrixRoomUtils.Authentication;
+
+namespace MatrixRoomUtils.Extensions;
+
+public static class StringExtensions
+{
+    public static async Task<string> GetMediaUrl(this string MxcUrl)
+    {
+        //MxcUrl: mxc://rory.gay/ocRVanZoUTCcifcVNwXgbtTg
+        //target: https://matrix.rory.gay/_matrix/media/v3/download/rory.gay/ocRVanZoUTCcifcVNwXgbtTg
+        
+        var server = MxcUrl.Split('/')[2];
+        var mediaId = MxcUrl.Split('/')[3];
+        return $"{await MatrixAccount.ResolveHomeserverFromWellKnown(server)}/_matrix/media/v3/download/{server}/{mediaId}";
+    }
+    
+}
\ No newline at end of file
diff --git a/MatrixRoomUtils.Core/MatrixRoomUtils.Core.csproj b/MatrixRoomUtils.Core/MatrixRoomUtils.Core.csproj
new file mode 100644
index 0000000..6836c68
--- /dev/null
+++ b/MatrixRoomUtils.Core/MatrixRoomUtils.Core.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net7.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>
diff --git a/MatrixRoomUtils.Core/Responses/LoginResponse.cs b/MatrixRoomUtils.Core/Responses/LoginResponse.cs
new file mode 100644
index 0000000..eedc970
--- /dev/null
+++ b/MatrixRoomUtils.Core/Responses/LoginResponse.cs
@@ -0,0 +1,31 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using MatrixRoomUtils.Authentication;
+
+namespace MatrixRoomUtils.Responses;
+
+public class LoginResponse
+{
+    [JsonPropertyName("access_token")]
+    public string AccessToken { get; set; }
+    [JsonPropertyName("device_id")]
+    public string DeviceId { get; set; }
+    [JsonPropertyName("home_server")]
+    public string HomeServer { get; set; }
+    [JsonPropertyName("user_id")]
+    public string UserId { get; set; }
+    
+    public async Task<ProfileResponse> GetProfile()
+    {
+        var hc = new HttpClient();
+        var resp = await hc.GetAsync($"{HomeServer}/_matrix/client/r0/profile/{UserId}");
+        var data = await resp.Content.ReadFromJsonAsync<JsonElement>();
+        if(!resp.IsSuccessStatusCode) Console.WriteLine("Profile: " + data.ToString());
+        return data.Deserialize<ProfileResponse>();
+    }
+    public async Task<string> GetCanonicalHomeserverUrl()
+    {
+        return await MatrixAccount.ResolveHomeserverFromWellKnown(HomeServer);
+    }
+}
\ No newline at end of file
diff --git a/MatrixRoomUtils.Core/Responses/ProfileResponse.cs b/MatrixRoomUtils.Core/Responses/ProfileResponse.cs
new file mode 100644
index 0000000..ab6cc92
--- /dev/null
+++ b/MatrixRoomUtils.Core/Responses/ProfileResponse.cs
@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+
+namespace MatrixRoomUtils.Authentication;
+
+public class ProfileResponse
+{
+    [JsonPropertyName("avatar_url")]
+    public string? AvatarUrl { get; set; } = "";
+    [JsonPropertyName("displayname")]
+    public string DisplayName { get; set; } = "";
+}
\ No newline at end of file
diff --git a/MatrixRoomUtils.Core/StateEvent.cs b/MatrixRoomUtils.Core/StateEvent.cs
new file mode 100644
index 0000000..34cefe4
--- /dev/null
+++ b/MatrixRoomUtils.Core/StateEvent.cs
@@ -0,0 +1,53 @@
+namespace MatrixRoomUtils;
+
+public class StateEvent
+{
+    //example:
+    /*
+       {
+    "content": {
+      "avatar_url": "mxc://matrix.org/BnmEjNvGAkStmAoUiJtEbycT",
+      "displayname": "X ⊂ Shekhinah | she/her | you",
+      "membership": "join"
+    },
+    "origin_server_ts": 1682668449785,
+    "room_id": "!wDPwzxYCNPTkHGHCFT:the-apothecary.club",
+    "sender": "@kokern:matrix.org",
+    "state_key": "@kokern:matrix.org",
+    "type": "m.room.member",
+    "unsigned": {
+      "replaces_state": "$7BWfzN15LN8FFUing1hiUQWFfxnOusrEHYFNiOnNrlM",
+      "prev_content": {
+        "avatar_url": "mxc://matrix.org/hEQbGywixsjpxDrWvUYEFNur",
+        "displayname": "X ⊂ Shekhinah | she/her | you",
+        "membership": "join"
+      },
+      "prev_sender": "@kokern:matrix.org"
+    },
+    "event_id": "$6AGoMCaxqcOeIIDbez1f0VKwLkOEq3EiVLdlsoxDpNg",
+    "user_id": "@kokern:matrix.org",
+    "replaces_state": "$7BWfzN15LN8FFUing1hiUQWFfxnOusrEHYFNiOnNrlM",
+    "prev_content": {
+      "avatar_url": "mxc://matrix.org/hEQbGywixsjpxDrWvUYEFNur",
+      "displayname": "X ⊂ Shekhinah | she/her | you",
+      "membership": "join"
+    }
+  }
+     */
+    public dynamic content { get; set; }
+    public long origin_server_ts { get; set; }
+    public string room_id { get; set; }
+    public string sender { get; set; }
+    public string state_key { get; set; }
+    public string type { get; set; }
+    public dynamic unsigned { get; set; }
+    public string event_id { get; set; }
+    public string user_id { get; set; }
+    public string replaces_state { get; set; }
+    public dynamic prev_content { get; set; }
+}
+
+public class StateEvent<T> : StateEvent where T : class
+{
+    public T content { get; set; }
+}
\ No newline at end of file
diff --git a/MatrixRoomUtils.Core/StateEventTypes/PolicyRuleStateEventData.cs b/MatrixRoomUtils.Core/StateEventTypes/PolicyRuleStateEventData.cs
new file mode 100644
index 0000000..45063cc
--- /dev/null
+++ b/MatrixRoomUtils.Core/StateEventTypes/PolicyRuleStateEventData.cs
@@ -0,0 +1,52 @@
+using System.Text.Json.Serialization;
+
+namespace MatrixRoomUtils.StateEventTypes;
+
+public class PolicyRuleStateEventData
+{
+    /// <summary>
+    /// Entity this ban applies to, can use * and ? as globs.
+    /// </summary>
+    [JsonPropertyName("entity")]
+    public string? Entity { get; set; }
+    /// <summary>
+    /// Reason this user is banned
+    /// </summary>
+    [JsonPropertyName("reason")]
+    public string? Reason { get; set; }
+    /// <summary>
+    /// Suggested action to take
+    /// </summary>
+    [JsonPropertyName("recommendation")]
+    public string? Recommendation { get; set; }
+
+    /// <summary>
+    /// Expiry time in milliseconds since the unix epoch, or null if the ban has no expiry.
+    /// </summary>
+    [JsonPropertyName("support.feline.policy.expiry.rev.2")] //stable prefix: expiry, msc pending
+    public long? Expiry { get; set; }
+    
+    
+    //utils
+    /// <summary>
+    /// Readable expiry time, provided for easy interaction
+    /// </summary>
+    [JsonPropertyName("gay.rory.matrix_room_utils.readable_expiry_time_utc")]
+    public DateTime? ExpiryDateTime
+    {
+        get => Expiry == null ? null : DateTimeOffset.FromUnixTimeMilliseconds(Expiry.Value).DateTime;
+        set => Expiry = ((DateTimeOffset) value).ToUnixTimeMilliseconds();
+    }
+}
+
+public static class PolicyRecommendationTypes
+{
+    /// <summary>
+    /// Ban this user
+    /// </summary>
+    public static string Ban = "m.ban";
+    /// <summary>
+    /// Mute this user
+    /// </summary>
+    public static string Mute = "support.feline.policy.recommendation_mute"; //stable prefix: m.mute, msc pending
+}
\ No newline at end of file