using khmereid_backend.Dtos;
using Microsoft.Extensions.Logging;

namespace khmereid_backend.Integrations;

public class MockAuthnApi : IAuthnApi
{
    private readonly ILogger<MockAuthnApi> _logger;

    private static readonly Guid StaticIdentityId = Guid.Parse("c9ac4dab-cb86-4e5b-8a59-8ecf6a5479a2");
    private const string StaticOtp = "000000";
    private const string StaticToken = "ory_st_gCk1btBYn0RUCdLV31N60jZlzLgcAoS8";

    public MockAuthnApi(ILogger<MockAuthnApi> logger)
    {
        _logger = logger;
    }

    // --------------------------- Registration Flows ---------------------------
    public Task<FlowDto> CreateOtpRegistrationFlowAsync(string phone)
    {
        _logger.LogInformation("[Mock] Created registration flow for {Phone}, OTP={Otp}", phone, StaticOtp);

        return Task.FromResult(new FlowDto
        {
            FlowId = "mock_flow_id",
            State = "sent_otp",
            ExpiresAt = DateTimeOffset.UtcNow.AddMinutes(5)
        });
    }

    public Task<SignupResultDto> CompleteOtpRegistrationFlowAsync(string otp, string phone, string flowId)
    {
        if (otp != StaticOtp)
        {
            return Task.FromResult(new SignupResultDto
            {
                Error = "BadRequest",
                Message = "Invalid OTP."
            });
        }

        _logger.LogInformation("[Mock] Completed registration for {Phone}, IdentityId={IdentityId}", phone, StaticIdentityId);

        return Task.FromResult(new SignupResultDto
        {
            IdentityId = StaticIdentityId,
            AccessToken = StaticToken,
            ExpiredAt = DateTimeOffset.UtcNow.AddHours(1).UtcDateTime
        });
    }

    // --------------------------- Login Flows ---------------------------
    public Task<FlowDto> CreateOtpLoginFlowAsync(string phone)
    {
        _logger.LogInformation("[Mock] Created login flow for {Phone}, OTP={Otp}", phone, StaticOtp);

        return Task.FromResult(new FlowDto
        {
            FlowId = "mock_login_flow_id",
            State = "sent_otp",
            ExpiresAt = DateTimeOffset.UtcNow.AddMinutes(5)
        });
    }

    public Task<LoginResultDto> CompleteOtpLoginFlowAsync(string flowId, string phone, string otp)
    {
        if (otp != StaticOtp)
        {
            return Task.FromResult(new LoginResultDto
            {
                Error = "BadRequest",
                Message = "Invalid OTP."
            });
        }

        _logger.LogInformation("[Mock] Completed login for {Phone}, IdentityId={IdentityId}", phone, StaticIdentityId);

        return Task.FromResult(new LoginResultDto
        {
            IdentityId = StaticIdentityId,
            AccessToken = StaticToken,
            ExpiredAt = DateTimeOffset.UtcNow.AddHours(1).UtcDateTime
        });
    }

    // --------------------------- Session & Logout ---------------------------
    public Task<SessionDto> GetMeAsync(string sessionToken)
    {
        return Task.FromResult(new SessionDto
        {
            Id = StaticIdentityId.ToString(),
            ExpiresAt = DateTimeOffset.UtcNow.AddHours(1)
        });
    }

    public Task<dynamic> Logout(string sessionToken)
    {
        _logger.LogInformation("[Mock] Logged out session {Token}", sessionToken);
        return Task.FromResult<dynamic>(new { Message = "Logged out successfully." });
    }
}