using System.Net;
using System.Net.Http.Json;
using Microsoft.AspNetCore.Mvc.Testing;
using StellaOps.VulnExplorer.Api.Models;
using Xunit;

namespace StellaOps.VulnExplorer.Api.Tests;

public class VulnApiTests : IClassFixture<WebApplicationFactory<Program>>
{
    private readonly WebApplicationFactory<Program> factory;

    public VulnApiTests(WebApplicationFactory<Program> factory)
    {
        this.factory = factory.WithWebHostBuilder(_ => { });
    }

    [Fact]
    public async Task List_ReturnsDeterministicOrder()
    {
        var client = factory.CreateClient();
        client.DefaultRequestHeaders.Add("x-stella-tenant", "tenant-a");

        var response = await client.GetAsync("/v1/vulns");
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var payload = await response.Content.ReadFromJsonAsync<VulnListResponse>();
        Assert.NotNull(payload);
        Assert.Equal(new[] { "vuln-0001", "vuln-0002" }, payload!.Items.Select(v => v.Id));
    }

    [Fact]
    public async Task List_FiltersByCve()
    {
        var client = factory.CreateClient();
        client.DefaultRequestHeaders.Add("x-stella-tenant", "tenant-a");

        var response = await client.GetAsync("/v1/vulns?cve=CVE-2024-2222");
        response.EnsureSuccessStatusCode();

        var payload = await response.Content.ReadFromJsonAsync<VulnListResponse>();
        Assert.Single(payload!.Items);
        Assert.Equal("vuln-0002", payload.Items[0].Id);
    }

    [Fact]
    public async Task Detail_ReturnsNotFoundWhenMissing()
    {
        var client = factory.CreateClient();
        client.DefaultRequestHeaders.Add("x-stella-tenant", "tenant-a");

        var response = await client.GetAsync("/v1/vulns/missing");
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Fact]
    public async Task Detail_ReturnsRationaleAndPaths()
    {
        var client = factory.CreateClient();
        client.DefaultRequestHeaders.Add("x-stella-tenant", "tenant-a");

        var response = await client.GetAsync("/v1/vulns/vuln-0001");
        response.EnsureSuccessStatusCode();

        var detail = await response.Content.ReadFromJsonAsync<VulnDetail>();
        Assert.NotNull(detail);
        Assert.Equal("rat-0001", detail!.Rationale.Id);
        Assert.Contains("/src/app/Program.cs", detail.Paths);
        Assert.NotEmpty(detail.Evidence);
    }
}