Handle external logouts

1 files changed, 97 insertions, 0 deletions

diff --git a/MatrixRoomUtils.Web/Pages/InvalidSession.razor b/MatrixRoomUtils.Web/Pages/InvalidSession.razor
new file mode 100644
index 0000000..3bcd797
--- /dev/null
+++ b/MatrixRoomUtils.Web/Pages/InvalidSession.razor
@@ -0,0 +1,97 @@
+@page "/InvalidSession"
+@using MatrixRoomUtils.Core.Helpers
+@using MatrixRoomUtils.Core.Responses
+@using MatrixRoomUtils.Web.Shared.SimpleComponents
+
+<PageTitle>Invalid session</PageTitle>
+
+<h3>Rory&::MatrixUtils - Invalid session encountered</h3>
+<p>A session was encountered that is no longer valid. This can happen if you have logged out of the account on another device, or if the access token has expired.</p>
+
+@if (_login is not null) {
+    <p>It appears that the affected user is @_login.UserId (@_login.DeviceId) on @_login.Homeserver!</p>
+    <LinkButton OnClick="@(OpenRefreshDialog)">Refresh token</LinkButton>
+    <LinkButton OnClick="@(RemoveUser)">Remove</LinkButton>
+
+    @if (_showRefreshDialog) {
+        <ModalWindow MinWidth="300" X="275" Y="300" Title="@($"Password for {_login.UserId}")">
+            <FancyTextBox IsPassword="true" @bind-Value="@_password"></FancyTextBox><br/>
+            <LinkButton OnClick="TryLogin">Log in</LinkButton>
+            @if (_loginException is not null) {
+                <pre style="color: red;">@_loginException.RawContent</pre>
+            }
+        </ModalWindow>
+    }
+}
+
+@code
+{
+    [Parameter]
+    [SupplyParameterFromQuery(Name = "ctx")]
+    public string Context { get; set; }
+
+    private LoginResponse _login { get; set; }
+
+    private bool _showRefreshDialog { get; set; } = false;
+
+    private string _password { get; set; } = "";
+
+    private MatrixException _loginException { get; set; }
+
+    protected override async Task OnInitializedAsync() {
+        var tokens = await MRUStorage.GetAllTokens();
+        if (tokens is null || tokens.Count == 0) {
+            NavigationManager.NavigateTo("/Login");
+            return;
+        }
+
+        _login = tokens.FirstOrDefault(x => x.AccessToken == Context);
+
+        if (_login is null) {
+            Console.WriteLine($"Could not find {_login} in stored tokens!");
+        }
+
+        await base.OnInitializedAsync();
+    }
+
+    private async Task RemoveUser() {
+        await MRUStorage.RemoveToken(_login);
+        if ((await MRUStorage.GetCurrentToken()).AccessToken == _login.AccessToken)
+            MRUStorage.SetCurrentToken((await MRUStorage.GetAllTokens()).FirstOrDefault());
+        await OnInitializedAsync();
+    }
+
+    private async Task OpenRefreshDialog() {
+        _showRefreshDialog = true;
+        StateHasChanged();
+    }
+
+    private async Task SwitchSession(LoginResponse auth) {
+        Console.WriteLine($"Switching to {auth.Homeserver} {auth.AccessToken} {auth.UserId}");
+        await MRUStorage.SetCurrentToken(auth);
+        await OnInitializedAsync();
+    }
+
+    private async Task TryLogin() {
+        try {
+            var result = await HomeserverProvider.Login(_login.Homeserver, _login.UserId, _password);
+            if (result is null) {
+                Console.WriteLine($"Failed to login to {_login.Homeserver} as {_login.UserId}!");
+                return;
+            }
+            Console.WriteLine($"Obtained access token for {result.UserId}!");
+
+            await RemoveUser();
+            await MRUStorage.AddToken(result);
+            if (result.UserId == (await MRUStorage.GetCurrentToken())?.UserId)
+                await MRUStorage.SetCurrentToken(result);
+            NavigationManager.NavigateTo("/");
+        }
+        catch (MatrixException e) {
+            Console.WriteLine($"Failed to login to {_login.Homeserver} as {_login.UserId}!");
+            Console.WriteLine(e);
+            _loginException = e;
+            StateHasChanged();
+        }
+    }
+}