using System.Text;
using ApplicationLayer.Services.Applicants.Models;
using ApplicationLayer.Services.Applicants.Models.Validation;
using Domains;
using FluentAssertions;
using FluentValidation;
using VisaApi.Fakers.Applicants.Requests;
using Xunit;

namespace VisaApi.Tests.Application.Validation.Applicants;

public class PlaceOfWorkModelValidatorTests
{
    private readonly static IValidator<PlaceOfWorkModel> validator = new PlaceOfWorkModelValidator();
    private readonly static PlaceOfWorkModelFaker faker = new();

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty phone num
    /// </summary>
    [Fact]
    private async Task ValidateForEmptyPhoneNumShouldReturnError()
    {
        var model = faker.Generate();
        model.PhoneNum = string.Empty;

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
            .Should().NotBeEmpty();
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for long phone num
    /// </summary>
    [Fact]
    private async Task ValidateForLongPhoneNumShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('8', ConfigurationConstraints.PhoneNumberLength + 1);
        model.PhoneNum = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
            .Should().NotBeEmpty();
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for short phone num
    /// </summary>
    [Fact]
    private async Task ValidateForShortPhoneNumShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('8', ConfigurationConstraints.PhoneNumberMinLength - 1);
        model.PhoneNum = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
            .Should()
            .HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid phone num
    /// </summary>
    [Fact]
    private async Task ValidateForNotValidPhoneNumShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('a', ConfigurationConstraints.PhoneNumberMinLength);
        model.PhoneNum = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
            .Should()
            .HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should throw exception for null address
    /// </summary>
    [Fact]
    private async Task ValidateForEmptyAddressShouldThrow()
    {
        var model = faker.Generate();
        model.Address = null!;
        NullReferenceException? result = null;

        try
        {
            await validator.ValidateAsync(model);
        }
        catch (Exception e)
        {
            result = e as NullReferenceException;
        }

        result.Should().NotBeNull();
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty Country
    /// </summary>
    [Fact]
    private async Task ValidateForEmptyCountryShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.Country = "";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Country")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long Country
    /// </summary>
    [Fact]
    private async Task ValidateForLongCountryShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('a', ConfigurationConstraints.CountryNameLength + 1);
        model.Address.Country = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Country")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid Country
    /// </summary>
    [Fact]
    private async Task ValidateForNotValidCountryShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.Country = "|&%";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Country")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty City
    /// </summary>
    [Fact]
    private async Task ValidateForEmptyCityShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.City = "";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.City")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long city
    /// </summary>
    [Fact]
    private async Task ValidateForLongCityShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('a', ConfigurationConstraints.CityNameLength + 1);
        model.Address.City = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.City")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid city
    /// </summary>
    [Fact]
    private async Task ValidateForNotValidCityShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.City = "|&%";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.City")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty street
    /// </summary>
    [Fact]
    private async Task ValidateForEmptyStreetShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.Street = "";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Street")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long street
    /// </summary>
    [Fact]
    private async Task ValidateForLongStreetShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('a', ConfigurationConstraints.StreetNameLength + 1);
        model.Address.Street = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Street")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid street
    /// </summary>
    [Fact]
    private async Task ValidateForNotValidStreetShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.Street = "|&%";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Street")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty building        /// </summary>
    [Fact]
    private async Task ValidateForEmptyBuildingShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.Building = "";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Building")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long building
    /// </summary>
    [Fact]
    private async Task ValidateForLongBuildingShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('a', ConfigurationConstraints.BuildingNumberLength + 1);
        model.Address.Building = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Building")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid building
    /// </summary>
    [Fact]
    private async Task ValidateForNotValidBuildingShouldReturnError()
    {
        var model = faker.Generate();
        model.Address.Building = "|&%";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == "Address.Building")
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty name
    /// </summary>
    [Fact]
    private async Task ValidateForEmptyNameShouldReturnError()
    {
        var model = faker.Generate();
        model.Name = "";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.Name))
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long name
    /// </summary>
    [Fact]
    private async Task ValidateForTooLongNameShouldReturnError()
    {
        var model = faker.Generate();
        var stringBuilder = new StringBuilder();
        stringBuilder.Append('g', ConfigurationConstraints.PlaceOfWorkNameLength + 1);
        model.Name = stringBuilder.ToString();

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.Name))
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid name
    /// </summary>
    [Fact]
    private async Task ValidateForNotValidNameShouldReturnError()
    {
        var model = faker.Generate();
        model.Name = "@$%&|";

        var result = await validator.ValidateAsync(model);

        result.Errors.Where(error => error.PropertyName == nameof(model.Name))
            .Should().HaveCount(1);
    }

    /// <summary>
    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return no errors for valid model
    /// </summary>
    [Fact]
    private async Task ValidateForValidShouldReturnNoErrors()
    {
        var model = faker.Generate();

        var result = await validator.ValidateAsync(model);

        result.Errors.Should().BeEmpty();
    }
}