using HrynCo.NotificationService.Contracts.Messages;
using HrynCo.NotificationService.DAL.Abstract.Repositories;
using HrynCo.NotificationService.DAL.Abstract.Templates;
using HrynCo.NotificationService.DAL.EF;
using HrynCo.NotificationService.Worker.Services;
using HrynCo.NotificationService.Worker.Services.EmailProcessing;
using Microsoft.Extensions.DependencyInjection;

namespace HrynCo.NotificationService.Web.IntegrationTests;

public sealed class WorkerTemplateIntegrationTests(TemplateDatabaseFixture fixture) : IClassFixture<TemplateDatabaseFixture>
{
    [Fact]
    public async Task Worker_UsesExactLanguageContentAndCurrentSharedContract()
    {
        var connection = await fixture.CreateDatabaseAsync();
        using var provider = new ServiceCollection().AddNotificationDataAccess(connection).AddNotificationWorkerServices().BuildServiceProvider();
        var codes = new[] { "de", "en", "ru", "uk", "ru-RU" };
        foreach (var code in codes)
            await AddVersionAsync(provider, code);
        foreach (var code in codes)
        {
            using var readScope = provider.CreateScope();
            var template = await readScope.ServiceProvider.GetRequiredService<IEmailTemplateService>().GetAsync("TestService", "Delivery", code, default);
            var rendered = readScope.ServiceProvider.GetRequiredService<IEmailTemplateRenderingService>().Render(template, Message(code));
            Assert.Equal(code + " A < B", rendered.Subject);
            Assert.Equal("<p>A &lt; B</p>", rendered.HtmlBody);
            Assert.Equal("A < B", rendered.TextBody);
        }
        using (var updateScope = provider.CreateScope())
        {
            var definitions = updateScope.ServiceProvider.GetRequiredService<IEmailTemplateDefinitionRepository>();
            var definition = (await definitions.GetDefinitionAsync("TestService", "Delivery"))!;
            definition.Variables = [new EmailTemplateVariable { Name = "Extra", Required = true }];
            await definitions.SaveDefinitionAsync(definition, false);
        }
        using var finalScope = provider.CreateScope();
        var loader = finalScope.ServiceProvider.GetRequiredService<IEmailTemplateService>();
        var updated = await loader.GetAsync("TestService", "Delivery", "ru-RU", default);
        var error = Assert.Throws<InvalidDataException>(() => finalScope.ServiceProvider.GetRequiredService<IEmailTemplateRenderingService>().Render(updated, Message("ru-RU")));
        Assert.Contains("Extra", error.Message);
        await Assert.ThrowsAsync<InvalidOperationException>(() => loader.GetAsync("TestService", "Delivery", "RU-ru", default));
        await Assert.ThrowsAsync<InvalidOperationException>(() => loader.GetAsync("TestService", "Missing", "en", default));
    }

    [Fact]
    public async Task Worker_CompatibilityRetryPreservesExactVersionPriorityAndRepositoryCodes()
    {
        var connection = await fixture.CreateDatabaseAsync();
        using var provider = new ServiceCollection().AddNotificationDataAccess(connection).AddNotificationWorkerServices().BuildServiceProvider();
        await AddVersionAsync(provider, "ru");
        await AddVersionAsync(provider, "ru-RU");
        using (var legacyScope = provider.CreateScope())
        {
            var loader = legacyScope.ServiceProvider.GetRequiredService<IEmailTemplateService>();
            Assert.Equal("ru", (await loader.GetAsync("TestService", "Delivery", "RU", default)).LanguageCode);
            Assert.Equal("ru", (await loader.GetAsync("TestService", "Delivery", " ru ", default)).LanguageCode);
            Assert.Null(await legacyScope.ServiceProvider.GetRequiredService<IEmailTemplateRepository>().GetAsync("TestService", "Delivery", "RU"));
        }
        using (var catalogScope = provider.CreateScope())
        {
            var services = catalogScope.ServiceProvider.GetRequiredService<INotificationServiceRepository>();
            var service = (await services.GetAllAsync()).Single(s => s.Name == "TestService");
            service.Languages = [..service.Languages, new ServiceLanguageInfo { Code = "RU" }];
            await services.SaveAsync(service, false);
        }
        await AddVersionAsync(provider, "RU");
        using var exactScope = provider.CreateScope();
        var exactLoader = exactScope.ServiceProvider.GetRequiredService<IEmailTemplateService>();
        Assert.Equal("RU", (await exactLoader.GetAsync("TestService", "Delivery", "RU", default)).LanguageCode);
        Assert.Equal("ru-RU", (await exactLoader.GetAsync("TestService", "Delivery", "ru-RU", default)).LanguageCode);
        Assert.Equal("ru", (await exactLoader.GetAsync("TestService", "Delivery", "ru", default)).LanguageCode);
        await Assert.ThrowsAsync<InvalidOperationException>(() => exactLoader.GetAsync("TestService", "Delivery", "RU-ru", default));
        await Assert.ThrowsAsync<InvalidOperationException>(() => exactLoader.GetAsync("TestService", "Delivery", "zz", default));
    }

    private static async Task AddVersionAsync(ServiceProvider provider, string code)
    {
        using var scope = provider.CreateScope();
        await scope.ServiceProvider.GetRequiredService<IEmailTemplateRepository>().AddAsync(new EmailTemplate
        {
            ServiceName = "TestService", Key = "Delivery", LanguageCode = code,
            Subject = code + " {{Name}}", HtmlBody = "<p>{{Name}}</p>", TextBody = "{{Name}}",
            Variables = [new EmailTemplateVariable { Name = "Name", Required = true }]
        });
    }

    private static SendEmailMessageData Message(string code) => new()
    {
        ServiceName = "TestService", TemplateKey = "Delivery", LanguageCode = code,
        RecipientEmail = "test@example.invalid", RecipientName = "Test", Variables = new Dictionary<string, string> { ["Name"] = "A < B" }
    };
}