hrynco-notification-service/HrynCo.NotificationService.Services.Tests/DevelopmentDataSeederTests.cs

namespace HrynCo.NotificationService.Services.Tests;

using HrynCo.NotificationService.DAL.Abstract.Providers;
using HrynCo.NotificationService.DAL.Abstract.Repositories;
using HrynCo.NotificationService.DAL.Abstract.Templates;
using HrynCo.NotificationService.Migrator;
using Microsoft.Extensions.Logging.Abstractions;
using NSubstitute;

public sealed class DevelopmentDataSeederTests
{
    private readonly IEmailChannelRepository _channels = Substitute.For<IEmailChannelRepository>();
    private readonly IEmailTemplateRepository _templates = Substitute.For<IEmailTemplateRepository>();

    [Fact]
    public async Task SeedAsync_WhenConfigurationIsMissing_CreatesMailpitChannelAndTestTemplate()
    {
        _channels.GetByServiceAsync("TestService", Arg.Any<CancellationToken>())
            .Returns(Array.Empty<EmailChannel>());
        _templates.GetAsync("TestService", "TestEmail", "en", Arg.Any<CancellationToken>())
            .Returns((EmailTemplate?)null);

        DevelopmentDataSeeder seeder = CreateSeeder();

        await seeder.SeedAsync("TestService", CancellationToken.None);

        await _channels.Received(1).AddAsync(
            Arg.Is<EmailChannel>(channel => IsMailpitChannel(channel)),
            Arg.Any<CancellationToken>());
        await _templates.Received(1).AddAsync(
            Arg.Is<EmailTemplate>(template =>
                template.ServiceName == "TestService" &&
                template.Key == "TestEmail" &&
                template.Variables.Any(variable => variable.Name == "Message" && variable.Required)),
            Arg.Any<CancellationToken>());
    }

    [Fact]
    public async Task SeedAsync_WhenConfigurationExists_DoesNotDuplicateOrOverwriteIt()
    {
        _channels.GetByServiceAsync("TestService", Arg.Any<CancellationToken>())
            .Returns([new EmailChannel
            {
                ServiceName = "TestService",
                EmailChannelType = EmailChannelType.Smtp,
                Settings = new SmtpChannelSettings()
            }]);
        _templates.GetAsync("TestService", "TestEmail", "en", Arg.Any<CancellationToken>())
            .Returns(new EmailTemplate
            {
                ServiceName = "TestService",
                Key = "TestEmail",
                LanguageCode = "en",
                Subject = "Existing",
                HtmlBody = "Existing",
                TextBody = "Existing"
            });

        DevelopmentDataSeeder seeder = CreateSeeder();

        await seeder.SeedAsync("TestService", CancellationToken.None);

        await _channels.DidNotReceive().AddAsync(Arg.Any<EmailChannel>(), Arg.Any<CancellationToken>());
        await _templates.DidNotReceive().AddAsync(Arg.Any<EmailTemplate>(), Arg.Any<CancellationToken>());
        await _channels.DidNotReceive().UpdateAsync(Arg.Any<EmailChannel>(), Arg.Any<CancellationToken>());
        await _templates.DidNotReceive().UpdateAsync(Arg.Any<EmailTemplate>(), Arg.Any<CancellationToken>());
    }

    private DevelopmentDataSeeder CreateSeeder() => new(
        _channels,
        _templates,
        NullLogger<DevelopmentDataSeeder>.Instance);

    private static bool IsMailpitChannel(EmailChannel channel)
    {
        return channel.ServiceName == "TestService" &&
               channel.IsActive &&
               channel.Settings is SmtpChannelSettings smtp &&
               smtp.Host == "mailpit" &&
               smtp.Port == 1025 &&
               !smtp.UseSsl;
    }
}