using Big.Domain;
using Big.Infrastructure;

namespace Big.Tests;

public class InMemoryRegistrationStoreTests
{
    [Fact]
    public async Task Saves_and_reads_back_a_registration_by_id()
    {
        var store = new InMemoryRegistrationStore();
        var registration = Registration.Submit("123456782");

        await store.SaveAsync(registration);

        var loaded = await store.GetAsync(registration.Id);
        Assert.NotNull(loaded);
        Assert.Equal(registration.Id, loaded.Id);
        Assert.Null(await store.GetAsync(RegistrationId.New()));
    }

    [Fact]
    public async Task Saving_the_same_id_upserts()
    {
        var store = new InMemoryRegistrationStore();
        var registration = Registration.Submit("123456782");
        await store.SaveAsync(registration);

        registration.AttachZaak(new Uri("http://openzaak/zaken/api/v1/zaken/abc"));
        await store.SaveAsync(registration);

        var loaded = await store.GetAsync(registration.Id);
        Assert.NotNull(loaded);
        Assert.Equal("http://openzaak/zaken/api/v1/zaken/abc", loaded.ZaakUrl!.ToString());
    }

    [Fact]
    public async Task Saving_a_null_registration_is_rejected()
    {
        var store = new InMemoryRegistrationStore();

        await Assert.ThrowsAsync<ArgumentNullException>(() => store.SaveAsync(null!));
    }

    [Fact]
    public async Task Finds_the_open_registration_for_a_bsn()
    {
        var store = new InMemoryRegistrationStore();
        var open = Registration.Submit("123456782");
        await store.SaveAsync(open);

        var found = await store.FindOpenByBsnAsync("123456782");

        Assert.NotNull(found);
        Assert.Equal(open.Id, found.Id);
    }

    [Fact]
    public async Task An_in_behandeling_registration_is_still_open()
    {
        var store = new InMemoryRegistrationStore();
        var registration = Registration.Submit("123456782");
        registration.TakeIntoBehandeling();
        await store.SaveAsync(registration);

        Assert.NotNull(await store.FindOpenByBsnAsync("123456782"));
    }

    [Theory]
    [InlineData(nameof(Registration.Withdraw))]
    [InlineData(nameof(Registration.Approve))]
    [InlineData(nameof(Registration.Reject))]
    [InlineData(nameof(Registration.Expire))]
    public async Task A_terminal_registration_is_not_returned_as_open(string transition)
    {
        var store = new InMemoryRegistrationStore();
        var registration = Registration.Submit("123456782");
        registration.AttachZaak(new Uri("http://openzaak/zaken/api/v1/zaken/abc")); // Approve requires an opened zaak
        switch (transition)
        {
            case nameof(Registration.Withdraw): registration.Withdraw(); break;
            case nameof(Registration.Approve): registration.Approve(); break;
            case nameof(Registration.Reject): registration.Reject(); break;
            case nameof(Registration.Expire): registration.Expire(); break;
        }
        await store.SaveAsync(registration);

        Assert.Null(await store.FindOpenByBsnAsync("123456782"));
    }

    [Fact]
    public async Task Does_not_return_another_bsns_registration_or_an_unknown_bsn()
    {
        var store = new InMemoryRegistrationStore();
        await store.SaveAsync(Registration.Submit("111111110"));

        Assert.Null(await store.FindOpenByBsnAsync("123456782"));
    }
}