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diff --git a/MatrixUtils.Web/Pages/HSAdmin/Synapse/BlockMedia.razor b/MatrixUtils.Web/Pages/HSAdmin/Synapse/BlockMedia.razor
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--- /dev/null
+++ b/MatrixUtils.Web/Pages/HSAdmin/Synapse/BlockMedia.razor
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+@page "/HSAdmin/Synapse/BlockMedia"
+@using System.Text.Json
+@using ArcaneLibs.Extensions
+@using LibMatrix
+@using LibMatrix.EventTypes.Spec
+
+<h3>Homeserver Administration - Block media</h3>
+@if (Homeserver is not null) {
+ <label>Event URL: </label>
+ <FancyTextBox @bind-Value="EventUrl"/>
+ <br/>
+ <label>Event JSON: </label>
+ <details>
+ <summary>@(string.IsNullOrEmpty(EventJson) ? "" : "{ ... }")</summary>
+ <FancyTextBox Multiline="true" @bind-Value="EventJson"/>
+ </details>
+ <br/>
+ <label>MXC URI: </label>
+ <FancyTextBox @bind-Value="MxcUrl"/>
+ <br/>
+ <label>Room ID: </label>
+ <FancyTextBox @bind-Value="RoomId"/>
+ <br/>
+ <pre>@MxcUri?.ToJson(ignoreNull: true)</pre>
+
+ @if (Event is not null) {
+ <LinkButton OnClick="@RedactAllEvents">Redact all messages</LinkButton>
+ }
+
+ @if (Event?.Sender?.Split(':', 2)[1] == Homeserver?.ServerName) {
+ <p>User is a local user!</p>
+ <LinkButton OnClick="@DeactivateUser">Deactivate User</LinkButton>
+ <LinkButton OnClick="@QuarantineMediaByUser">Quarantine all media</LinkButton>
+ }
+}
+
+<style>
+ .int-input {
+ width: 128px;
+ }
+
+ .tile {
+ display: inline-block;
+ padding: 4px;
+ border: 1px solid #ffffff22;
+ }
+
+ .tile280 {
+ min-width: 280px;
+ }
+
+ .tile150 {
+ min-width: 150px;
+ }
+
+ .range-sep {
+ display: inline-block;
+ padding: 4px;
+ width: 150px;
+ }
+
+ .range-sep::before {
+ content: "@("<") ";
+ }
+
+ .range-sep::after {
+ content: " @("<")";
+ }
+
+ .center-children {
+ text-align: center;
+ }
+</style>
+
+@code {
+
+ private AuthenticatedHomeserverSynapse? Homeserver { get; set; }
+
+ protected override async Task OnInitializedAsync() {
+ var hs = await sessionStore.GetCurrentHomeserver(navigateOnFailure: true) as AuthenticatedHomeserverSynapse;
+ if (hs is null) return;
+ Homeserver = hs;
+
+ if (!string.IsNullOrWhiteSpace(EventUrl)) {
+ _ = ExpandEventUrl();
+ }
+ }
+
+ [SupplyParameterFromQuery]
+ public string? EventUrl {
+ get;
+ set {
+ field = value?.Split('?')[0];
+ _ = ExpandEventUrl();
+ }
+ }
+
+ private StateEventResponse? Event { get; set; }
+
+ private string? EventJson {
+ get;
+ set {
+ field = value;
+ _ = ExpandEventJson();
+ }
+ }
+
+ private string? MxcUrl {
+ get;
+ set {
+ field = value;
+ _ = ExpandMxcUri();
+ }
+ }
+
+ private MxcUri? MxcUri { get; set; }
+
+ private string? RoomId {
+ get => Event?.RoomId ?? field;
+ set;
+ }
+
+ private async Task ExpandEventUrl() {
+ Console.WriteLine("Expanding event URL...");
+ if (!string.IsNullOrWhiteSpace(EventUrl)) {
+ Console.WriteLine("Parsing event URL...");
+ var data = ParseEventUrl(EventUrl);
+ Console.WriteLine($"Room: {data.room}, Event: {data.eventId}");
+ RoomId = data.room;
+ var room = Homeserver.GetRoom(data.room);
+ var eventResponse = await room.GetEventAsync(data.eventId);
+ eventResponse.RoomId ??= data.room;
+ EventJson = eventResponse?.ToJson() ?? "null";
+ }
+
+ StateHasChanged();
+ }
+
+ private async Task ExpandEventJson() {
+ Console.WriteLine("Expanding event JSON...");
+ if (!string.IsNullOrWhiteSpace(EventJson)) {
+ Event = JsonSerializer.Deserialize<StateEventResponse>(EventJson);
+ MxcUrl = Event?.ContentAs<RoomMessageEventContent>()?.Url;
+ Console.WriteLine($"MXC URL: {MxcUrl}");
+
+ var possiblyRelated = await Homeserver.Admin.GetRoomMediaAsync(Event!.RoomId!);
+ }
+
+ StateHasChanged();
+ }
+
+ private async Task ExpandMxcUri() {
+ Console.WriteLine("Expanding MXC URI...");
+ if (!string.IsNullOrWhiteSpace(MxcUrl)) {
+ MxcUri = MxcUrl;
+ }
+
+ StateHasChanged();
+ }
+
+ private (string room, string eventId) ParseEventUrl(string url) {
+ var parts = url.Split('/');
+ Console.WriteLine($"Parts: {string.Join(", ", parts)}");
+ return (parts[4].UrlDecode(), parts[5].Split('?')[0].UrlDecode());
+ }
+
+#region Local user
+
+ private async Task DeactivateUser() {
+ await Homeserver.Admin.DeactivateUserAsync(Event.Sender, true);
+ }
+
+ private async Task QuarantineMediaByUser() {
+ if (Event is null) return;
+ var media = Homeserver.Admin.GetUserMediaEnumerableAsync(Event?.Sender!);
+ await foreach (var m in media) {
+ if (m is not null) {
+ // await Homeserver.Admin.QuarantineMedia(m);
+ // await Homeserver.Admin.DeleteMedia(m);
+ }
+ }
+ }
+
+#endregion
+
+ private async Task RedactAllEvents() {
+ if (Event is null) return;
+ await Homeserver!.Admin.DeleteAllMessages(Event.Sender!);
+ }
+
+}
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