using System.Net;
using System.Net.Http.Json;
using BigRegister.Api.Contracts;
using Microsoft.AspNetCore.Mvc.Testing;

namespace BigRegister.Tests;

public class EndpointTests(WebApplicationFactory<Program> factory) : IClassFixture<WebApplicationFactory<Program>>
{
    private readonly HttpClient _client = factory.CreateClient();

    [Fact]
    public async Task DashboardView_computes_eligibility_decision()
    {
        var dto = await _client.GetFromJsonAsync<DashboardViewDto>("/api/dashboard-view");
        Assert.NotNull(dto);
        Assert.Equal("19012345601", dto.Registration.BigNummer);
        Assert.Equal("Geregistreerd", dto.Registration.Status.Tag);
        // seed deadline 2027-03-01 is within 12 months of "today" (2026) → eligible
        Assert.True(dto.Decisions.EligibleForHerregistratie);
        Assert.NotNull(dto.Decisions.HerregistratieReason);
    }

    [Fact]
    public async Task Notes_returns_seeded_aantekeningen()
    {
        var notes = await _client.GetFromJsonAsync<List<AantekeningDto>>("/api/notes");
        Assert.Equal(3, notes!.Count);
    }

    [Fact]
    public async Task Brp_returns_address()
    {
        var dto = await _client.GetFromJsonAsync<BrpAddressDto>("/api/brp/address");
        Assert.True(dto!.Gevonden);
        Assert.Equal("2514 EA", dto.Adres!.Postcode);
    }

    [Fact]
    public async Task Duo_lookup_carries_server_decided_questions_and_professions()
    {
        var dto = await _client.GetFromJsonAsync<DuoLookupDto>("/api/duo/diplomas");
        Assert.NotNull(dto);

        var english = dto.Diplomas.Single(d => d.Id == "d2");
        Assert.Equal("Arts", english.Beroep);
        Assert.Contains(english.PolicyQuestions, q => q.Id == "nl-taalvaardigheid");

        var dutch = dto.Diplomas.Single(d => d.Id == "d1");
        Assert.Empty(dutch.PolicyQuestions);

        // DUO "not found" fallback: an unlisted diploma → user uses the manual path,
        // which the same lookup provides (maximal question set + declarable professions).
        Assert.DoesNotContain(dto.Diplomas, d => d.Id == "unknown-id");
        Assert.Equal(3, dto.Handmatig.PolicyQuestions.Count);
        Assert.Equal(5, dto.Handmatig.Beroepen.Count);
    }

    [Fact]
    public async Task IntakePolicy_returns_scholing_threshold()
    {
        var dto = await _client.GetFromJsonAsync<IntakePolicyDto>("/api/intake/policy");
        Assert.Equal(1000, dto!.ScholingThreshold);
    }

    [Fact]
    public async Task Registration_with_duo_diploma_succeeds()
    {
        var res = await _client.PostAsJsonAsync("/api/registrations", new RegistratieRequest("duo"));
        res.EnsureSuccessStatusCode();
        var body = await res.Content.ReadFromJsonAsync<ReferentieResponse>();
        Assert.StartsWith("BIG-2026-", body!.Referentie);
    }

    [Fact]
    public async Task Registration_with_manual_diploma_is_rejected_with_problem_details()
    {
        var res = await _client.PostAsJsonAsync("/api/registrations", new RegistratieRequest("handmatig"));
        Assert.Equal(HttpStatusCode.UnprocessableEntity, res.StatusCode);
        Assert.Contains("application/problem+json", res.Content.Headers.ContentType!.ToString());
    }

    [Theory]
    [InlineData("/api/intakes")]
    [InlineData("/api/herregistraties")]
    public async Task Zero_hours_submission_is_rejected(string route)
    {
        var res = await _client.PostAsJsonAsync(route, new { uren = 0 });
        Assert.Equal(HttpStatusCode.UnprocessableEntity, res.StatusCode);
    }

    [Theory]
    [InlineData("/api/intakes")]
    [InlineData("/api/herregistraties")]
    public async Task Worked_hours_submission_succeeds(string route)
    {
        var res = await _client.PostAsJsonAsync(route, new { uren = 40 });
        res.EnsureSuccessStatusCode();
    }
}