@page "/"
@using MatrixRoomUtils.Core.Helpers
@using MatrixRoomUtils.Core.Responses
@using MatrixRoomUtils.Web.Shared.SimpleComponents

<PageTitle>Index</PageTitle>

<h3>Rory&::MatrixUtils</h3>
Small collection of tools to do not-so-everyday things.

<br/><br/>
<h5>Signed in accounts - <a href="/Login">Add new account</a></h5>
<hr/>
<form>
    @foreach (var (auth, user) in _users.OrderByDescending(x=>x.Value.RoomCount)) {
        var _auth = auth;
        var _user = user;
        <div style="margin-bottom: 1em;">
            <img style="border-radius: 50%; height: 3em; width: 3em;" src="@_user.AvatarUrl"/>
            <p style="margin-left: 1em; margin-top: -0.5em; display: inline-block;">
                <input type="radio" name="csa" checked="@(_currentSession.AccessToken == _auth.AccessToken)" @onclick="@(()=>SwitchSession(_auth))" style="text-decoration-line: unset;"/>
                <b>@_user.DisplayName</b> on <b>@_auth.Homeserver</b>
                <a role="button" @onclick="@(() => RemoveUser(_auth))">Remove</a>

            </p>
            <p style="margin-top: -1.5em; margin-left: 4em;">Member of @_user.RoomCount rooms</p>

        </div>
    }
</form>

@code
{
    private Dictionary<LoginResponse, UserInfo> _users = new();

    protected override async Task OnInitializedAsync() {
        _currentSession = await MRUStorage.GetCurrentToken();
        _users.Clear();
        var tokens = await MRUStorage.GetAllTokens();
        var profileTasks = tokens.Select(async token => {
            UserInfo userInfo = new();
            AuthenticatedHomeServer hs;
            try {
                hs = await HomeserverProvider.GetAuthenticatedWithToken(token.Homeserver, token.AccessToken);
            }
            catch (MatrixException e) {
                if (e.ErrorCode == "M_UNKNOWN_TOKEN") {
                    NavigationManager.NavigateTo("/InvalidSession?ctx="+token.AccessToken);
                    return;
                }
                throw;
            }
            var roomCountTask = hs.GetJoinedRooms();
            var profile = await hs.GetProfile(hs.WhoAmI.UserId);
            userInfo.DisplayName = profile.DisplayName ?? hs.WhoAmI.UserId;
            userInfo.AvatarUrl = MediaResolver.ResolveMediaUri(hs.FullHomeServerDomain,
                profile.AvatarUrl
                ?? "https://api.dicebear.com/6.x/identicon/svg?seed=" + hs.WhoAmI.UserId
                );
            userInfo.RoomCount = (await roomCountTask).Count;
            _users.Add(token, userInfo);
    // StateHasChanged();
        });
        await Task.WhenAll(profileTasks);
        await base.OnInitializedAsync();
    }

    private class UserInfo {
        internal string AvatarUrl { get; set; }
        internal string DisplayName { get; set; }
        internal int RoomCount { get; set; } = 0;
    }

    private async Task RemoveUser(LoginResponse auth) {
        await MRUStorage.RemoveToken(auth);
        if ((await MRUStorage.GetCurrentToken()).AccessToken == auth.AccessToken)
            MRUStorage.SetCurrentToken((await MRUStorage.GetAllTokens()).FirstOrDefault());
        await OnInitializedAsync();
    }

    private LoginResponse _currentSession;

    private async Task SwitchSession(LoginResponse auth) {
        Console.WriteLine($"Switching to {auth.Homeserver} {auth.AccessToken} {auth.UserId}");
        await MRUStorage.SetCurrentToken(auth);
        await OnInitializedAsync();
    }
}