using ChatBot.Models.Configuration;
using ChatBot.Models.Configuration.Validators;
using FluentAssertions;

namespace ChatBot.Tests.Configuration.Validators;

public class DatabaseSettingsValidatorTests
{
    private readonly DatabaseSettingsValidator _validator = new();

    [Fact]
    public void Validate_ShouldReturnSuccess_WhenSettingsAreValid()
    {
        // Arrange
        var settings = new DatabaseSettings
        {
            ConnectionString =
                "Host=localhost;Port=5432;Database=chatbot;Username=user;Password=pass",
            CommandTimeout = 30,
            EnableSensitiveDataLogging = false,
        };

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeTrue();
    }

    [Fact]
    public void Validate_ShouldReturnFailure_WhenConnectionStringIsEmpty()
    {
        // Arrange
        var settings = new DatabaseSettings
        {
            ConnectionString = "",
            CommandTimeout = 30,
            EnableSensitiveDataLogging = false,
        };

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
        result.Failures.Should().Contain(f => f.Contains("Database connection string is required"));
    }

    [Fact]
    public void Validate_ShouldReturnFailure_WhenCommandTimeoutIsInvalid()
    {
        // Arrange
        var settings = new DatabaseSettings
        {
            ConnectionString =
                "Host=localhost;Port=5432;Database=chatbot;Username=user;Password=pass",
            CommandTimeout = 0, // Invalid: <= 0
            EnableSensitiveDataLogging = false,
        };

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
        result.Failures.Should().Contain(f => f.Contains("Command timeout must be greater than 0"));
    }

    [Theory]
    [InlineData(null)]
    [InlineData("")]
    [InlineData("   ")]
    public void Validate_ShouldReturnFailure_WhenConnectionStringIsNullOrWhitespace(
        string? connectionString
    )
    {
        // Arrange
        var settings = new DatabaseSettings
        {
            ConnectionString = connectionString!,
            CommandTimeout = 30,
            EnableSensitiveDataLogging = false,
        };

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
        result.Failures.Should().Contain(f => f.Contains("Database connection string is required"));
    }
}