using System.Collections.Generic;
using System.Text.RegularExpressions;
using FluentAssertions;
using Microsoft.Extensions.Logging;
using StellaOps.TestKit.Observability;
using Xunit;

namespace StellaOps.TestKit.Tests;

public sealed partial class ObservabilityContractTests
{
    [Fact]
    public void HasRequiredFields_AllPresent_NoException()
    {
        var record = new CapturedLogRecord
        {
            LogLevel = LogLevel.Information,
            Message = "Test message",
            StateValues = new Dictionary<string, object?>
            {
                ["CorrelationId"] = "abc-123",
                ["TenantId"] = "acme"
            }
        };

        var act = () => LogContractAssert.HasRequiredFields(record, "CorrelationId", "TenantId");

        act.Should().NotThrow();
    }

    [Fact]
    public void HasRequiredFields_Missing_ThrowsContractViolation()
    {
        var record = new CapturedLogRecord
        {
            LogLevel = LogLevel.Information,
            Message = "Test message",
            StateValues = new Dictionary<string, object?>
            {
                ["CorrelationId"] = "abc-123"
            }
        };

        var act = () => LogContractAssert.HasRequiredFields(record, "CorrelationId", "MissingField");

        act.Should().Throw<ContractViolationException>()
            .WithMessage("*MissingField*");
    }

    [Fact]
    public void NoSensitiveData_Clean_NoException()
    {
        var records = new[]
        {
            new CapturedLogRecord
            {
                LogLevel = LogLevel.Information,
                Message = "User logged in successfully",
                StateValues = new Dictionary<string, object?>
                {
                    ["UserId"] = "user-123"
                }
            }
        };

        var piiPatterns = new[]
        {
            new Regex(@"\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b")
        };

        var act = () => LogContractAssert.NoSensitiveData(records, piiPatterns);

        act.Should().NotThrow();
    }
}