using Bit.Core.Entities;
using Bit.Core.KeyManagement.Entities;
using Bit.Core.KeyManagement.Enums;
using Bit.Core.KeyManagement.Models.Data;
using Bit.Core.KeyManagement.Queries;
using Bit.Core.KeyManagement.Repositories;
using Bit.Core.KeyManagement.UserKey;
using Xunit;

namespace Bit.Core.Test.KeyManagement.Queries;

public class IsV2EncryptionUserQueryTests
{
    private class FakeSigRepo : IUserSignatureKeyPairRepository
    {
        private readonly bool _hasKeys;
        public FakeSigRepo(bool hasKeys) { _hasKeys = hasKeys; }
        public Task<SignatureKeyPairData?> GetByUserIdAsync(Guid userId)
            => Task.FromResult(_hasKeys ? new SignatureKeyPairData(SignatureAlgorithm.Ed25519, "7.cose_signing", "vk") : null);

        // Unused in tests
        public Task<IEnumerable<UserSignatureKeyPair>> GetManyAsync(IEnumerable<Guid> ids) => throw new NotImplementedException();
        public Task<UserSignatureKeyPair> GetByIdAsync(Guid id) => throw new NotImplementedException();
        public Task<UserSignatureKeyPair> CreateAsync(UserSignatureKeyPair obj) => throw new NotImplementedException();
        public Task ReplaceAsync(UserSignatureKeyPair obj) => throw new NotImplementedException();
        public Task UpsertAsync(UserSignatureKeyPair obj) => throw new NotImplementedException();
        public Task DeleteAsync(UserSignatureKeyPair obj) => throw new NotImplementedException();
        public Task DeleteAsync(Guid id) => throw new NotImplementedException();
        public UpdateEncryptedDataForKeyRotation UpdateForKeyRotation(Guid grantorId, SignatureKeyPairData signatureKeyPair) => throw new NotImplementedException();
        public UpdateEncryptedDataForKeyRotation SetUserSignatureKeyPair(Guid userId, SignatureKeyPairData signatureKeyPair) => throw new NotImplementedException();
    }

    [Fact]
    public async Task Run_ReturnsTrue_ForV2State()
    {
        var user = new User { Id = Guid.NewGuid(), PrivateKey = "7.cose" };
        var sut = new IsV2EncryptionUserQuery(new FakeSigRepo(true));

        var result = await sut.Run(user);

        Assert.True(result);
    }

    [Fact]
    public async Task Run_ReturnsFalse_ForV1State()
    {
        var user = new User { Id = Guid.NewGuid(), PrivateKey = "2.iv|ct|mac" };
        var sut = new IsV2EncryptionUserQuery(new FakeSigRepo(false));

        var result = await sut.Run(user);

        Assert.False(result);
    }

    [Fact]
    public async Task Run_ThrowsForInvalidMixedState()
    {
        var user = new User { Id = Guid.NewGuid(), PrivateKey = "7.cose" };
        var sut = new IsV2EncryptionUserQuery(new FakeSigRepo(false));

        await Assert.ThrowsAsync<InvalidOperationException>(async () => await sut.Run(user));
    }
}