using VoiceCat.Server.Data;
using Voicecat.V1;
using static VoiceCat.Tests.ServerTests;
using static VoiceCat.Tests.ChannelManagementTests;
using static VoiceCat.Tests.MediaRelayTests;

namespace VoiceCat.Tests;

public class AdministrationTests
{
    [Fact]
    public async Task AccountAdministrationIsPermissionGatedAndPersistsPasswordChanges()
    {
        await using var fixture = new ServerFixture();
        await using var guest = await fixture.ConnectAsync();
        User user = await guest.LoginAsync("Guest");
        await using var admin = await AdminAsync(fixture);
        Assert.False(await ResultAsync(guest, new() { ListAccounts = new() }));
        Assert.False(await ResultAsync(guest, new() { CreateAccount = new() { Username = "new", Password = "secret" } }));
        Assert.False(await ResultAsync(guest, new() { SetPermission = new() { UserId = user.Id, Permissions = new() { IsAdmin = true } } }));
        Assert.True(await ResultAsync(admin, new() { SetPermission = new() { UserId = user.Id, Permissions = new() { CanAdminAccounts = true, CanCreateTempChannel = true } } }));
        Assert.True(await ResultAsync(guest, new() { CreateAccount = new() { Username = "new", Password = "first" } }));
        Assert.False(await ResultAsync(guest, new() { CreateAccount = new() { Username = "new", Password = "first" } }));
        Assert.False(await ResultAsync(guest, new() { SetPermission = new() { UserId = user.Id, Permissions = new() { IsAdmin = true } } }));
        Assert.False(await ResultAsync(guest, new() { CreateChannel = new() { Channel = new() { Name = "Permanent" } } }));
        Assert.True(await ResultAsync(guest, new() { CreateChannel = new() { Channel = new() { Name = "Temporary", Type = ChannelType.ChannelTemporary,
            Audio = new() { SampleRate = 48000, BitrateBps = 24000, FrameMs = 20 } } } }));
        Assert.True(await ResultAsync(guest, new() { ResetPassword = new() { Username = "new", NewPassword = "second" } }));
        Assert.False(await ResultAsync(guest, new() { ResetPassword = new() { Username = "missing", NewPassword = "second" } }));
        using (var store = new AccountStore(Path.Combine(fixture.Directory, "voicecat.db")))
        {
            Assert.Null(await store.AuthenticateAsync("new", "first"));
            Assert.NotNull(await store.AuthenticateAsync("new", "second"));
        }
        guest.Send(new() { RequestId = 50, ListAccounts = new() });
        Envelope list = await guest.ReadUntilAsync(e => e.ListAccountsResult is not null);
        Assert.Equal(50UL, list.RequestId);
        Assert.Equal(2, list.ListAccountsResult.Accounts.Count);
        var entry = list.ListAccountsResult.Accounts.Single(a => a.Username == "new");
        Assert.False(entry.IsAdmin);
        Assert.True(entry.CreatedAtUnixMs > 1_000_000_000_000);
        Assert.True(entry.LastLoginUnixMs > 1_000_000_000_000);
        Assert.True(await ResultAsync(guest, new() { DeleteAccount = new() { Username = "new" } }));
        Assert.False(await ResultAsync(guest, new() { DeleteAccount = new() { Username = "new" } }));
        using var reopened = new AccountStore(Path.Combine(fixture.Directory, "voicecat.db"));
        Assert.Null(await reopened.AuthenticateAsync("new", "second"));
    }

    [Fact]
    public async Task AccountBanPersistsByUsernameAndBlocksNewAuthentication()
    {
        await using var fixture = new ServerFixture();
        await using var admin = await AdminAsync(fixture);
        using var store = new AccountStore(Path.Combine(fixture.Directory, "voicecat.db"));
        await store.CreateAccountAsync("Member", "password");
        await using var member = await fixture.ConnectAsync();
        member.Send(new() { ClientHello = new() { ProtoVersion = 2 } });
        await member.ReadUntilAsync(e => e.ServerHello is not null);
        member.Send(new() { AuthRequest = new() { Password = new() { Username = "Member", Password = "password" } } });
        AuthResult auth = (await member.ReadUntilAsync(e => e.AuthResult is not null)).AuthResult;
        Assert.True(auth.Ok);
        Assert.True(await ResultAsync(admin, new() { Ban = new() { UserId = auth.Self.Id, Reason = "account banned" } }));
        Assert.NotNull((await member.ReadUntilAsync(e => e.Disconnect is not null)).Disconnect);
        Assert.True(store.IsBanned("username", "Member"));
        Assert.False(store.IsBanned("ip", "127.0.0.1"));
        await using var retry = await fixture.ConnectAsync();
        retry.Send(new() { ClientHello = new() { ProtoVersion = 2 } });
        await retry.ReadUntilAsync(e => e.ServerHello is not null);
        retry.Send(new() { AuthRequest = new() { Password = new() { Username = "Member", Password = "password" } } });
        Assert.False((await retry.ReadUntilAsync(e => e.AuthResult is not null)).AuthResult.Ok);
        Assert.False(await ResultAsync(admin, new() { Kick = new() { UserId = uint.MaxValue } }));
    }

    [Fact]
    public async Task ServerMuteDeafenAndMoveImmediatelyChangeEncryptedMediaRouting()
    {
        await using var fixture = new ServerFixture();
        await using var alice = await VoicePeer.ConnectAsync(fixture, "Alice");
        await using var bob = await VoicePeer.ConnectAsync(fixture, "Bob");
        await using var admin = await AdminAsync(fixture);
        uint a = alice.Client.Authentication!.Self.Id, b = bob.Client.Authentication!.Self.Id;
        var stream = await alice.AnnounceAsync(StreamKind.StreamMic);
        Assert.False(await ResultAsync(bob.Client, new() { ServerMute = new() { UserId = a, Muted = true } }));
        Assert.True(await ResultAsync(admin, new() { ServerMute = new() { UserId = a, Muted = true } }));
        await alice.SendAsync(alice.Seal(stream.Ssrc, [1])); await bob.AssertNoVoiceAsync();
        Assert.True(await ResultAsync(admin, new() { ServerMute = new() { UserId = a } }));
        Assert.True(await ResultAsync(admin, new() { ServerMute = new() { UserId = b, Deafened = true } }));
        await alice.SendAsync(alice.Seal(stream.Ssrc, [2])); await bob.AssertNoVoiceAsync();
        Assert.True(await ResultAsync(admin, new() { ServerMute = new() { UserId = b } }));
        await alice.SendAsync(alice.Seal(stream.Ssrc, [3])); Assert.Equal(new byte[] { 3 }, (await bob.ReceiveVoiceAsync()).Payload);
        Assert.True(await ResultAsync(admin, new() { MoveUser = new() { UserId = a, ChannelId = 2 } }));
        await alice.SendAsync(alice.Seal(stream.Ssrc, [4])); await bob.AssertNoVoiceAsync();
        Assert.True(await ResultAsync(admin, new() { MoveUser = new() { UserId = a, ChannelId = 1 } }));
        await alice.SendAsync(alice.Seal(stream.Ssrc, [5])); await bob.AssertNoVoiceAsync();
        var replacement = await alice.AnnounceAsync(StreamKind.StreamMic);
        await alice.SendAsync(alice.Seal(replacement.Ssrc, [6])); Assert.Equal(new byte[] { 6 }, (await bob.ReceiveVoiceAsync()).Payload);
    }

    [Theory]
    [InlineData(false)]
    [InlineData(true)]
    public async Task KickAndGuestBanDisconnectWithOneDepartureAndRetireMedia(bool ban)
    {
        await using var fixture = new ServerFixture();
        await using var alice = await VoicePeer.ConnectAsync(fixture, "Alice");
        await using var observer = await VoicePeer.ConnectAsync(fixture, "Observer");
        await using var admin = await AdminAsync(fixture);
        uint id = alice.Client.Authentication!.Self.Id;
        var stream = await alice.AnnounceAsync(StreamKind.StreamMic);
        Envelope request = ban ? new() { Ban = new() { UserId = id, Reason = "removed", ExpiresUnixMs = (ulong)DateTimeOffset.UtcNow.AddMinutes(1).ToUnixTimeMilliseconds() } }
            : new() { Kick = new() { UserId = id, Reason = "removed" } };
        Assert.True(await ResultAsync(admin, request));
        Assert.Equal("removed", (await alice.Client.ReadUntilAsync(e => e.Disconnect is not null)).Disconnect.Reason);
        var left = (await observer.Client.ReadUntilAsync(e => e.UserEvent?.LeftId == id)).UserEvent;
        Assert.Equal("removed", left.Reason);
        observer.Client.Send(new() { Ping = new() { Nonce = 99 } });
        while (true)
        {
            Envelope message = await observer.Client.ReadUntilAsync(_ => true);
            Assert.False(message.UserEvent?.LeftId == id);
            if (message.Pong?.Nonce == 99) break;
        }
        await alice.SendAsync(alice.Seal(stream.Ssrc, [1])); await observer.AssertNoVoiceAsync();
        await using var reconnect = await fixture.ConnectAsync();
        if (ban)
        {
            reconnect.Send(new() { ClientHello = new() { ProtoVersion = 2 } });
            Assert.NotNull((await reconnect.ReadUntilAsync(e => e.Disconnect is not null)).Disconnect);
            using var store = new AccountStore(Path.Combine(fixture.Directory, "voicecat.db"));
            Assert.True(store.IsBanned("ip", "127.0.0.1"));
            store.Ban("username", "expired", "", 1);
            Assert.False(store.IsBanned("username", "expired"));
        }
        else await reconnect.LoginAsync("Alice");
    }
}