using StellaOps.Auth.Abstractions;
using StellaOps.EvidenceLocker.Api;
using StellaOps.TestKit;
using System.Net;
using System.Net.Http.Json;
using System.Net.Http.Headers;

namespace StellaOps.EvidenceLocker.Tests;

[Collection(EvidenceLockerTestCollection.Name)]
public sealed class EvidenceAuditEndpointsTests : IDisposable
{
    private readonly EvidenceLockerWebApplicationFactory _factory;
    private readonly HttpClient _client;

    public EvidenceAuditEndpointsTests(EvidenceLockerWebApplicationFactory factory)
    {
        _factory = factory;
        _factory.ResetTestState();
        _client = factory.CreateClient();
    }

    [Trait("Category", TestCategories.Unit)]
    [Fact]
    public async Task EvidenceHomeAndPacks_AreDeterministic()
    {
        ConfigureAuthHeaders(_client, Guid.NewGuid().ToString("D"), StellaOpsScopes.EvidenceRead);

        var homeResponse = await _client.GetAsync("/api/v1/evidence", TestContext.Current.CancellationToken);
        Assert.Equal(HttpStatusCode.OK, homeResponse.StatusCode);
        var home = await homeResponse.Content.ReadFromJsonAsync<EvidenceHomeDto>(TestContext.Current.CancellationToken);
        Assert.NotNull(home);
        Assert.True(home!.QuickStats.LatestPacks24h > 0);

        var firstPacksResponse = await _client.GetAsync("/api/v1/evidence/packs", TestContext.Current.CancellationToken);
        var secondPacksResponse = await _client.GetAsync("/api/v1/evidence/packs", TestContext.Current.CancellationToken);
        Assert.Equal(HttpStatusCode.OK, firstPacksResponse.StatusCode);
        Assert.Equal(HttpStatusCode.OK, secondPacksResponse.StatusCode);

        var first = await firstPacksResponse.Content.ReadAsStringAsync(TestContext.Current.CancellationToken);
        var second = await secondPacksResponse.Content.ReadAsStringAsync(TestContext.Current.CancellationToken);
        Assert.Equal(first, second);

        var payload = await firstPacksResponse.Content.ReadFromJsonAsync<EvidencePackListResponseDto>(TestContext.Current.CancellationToken);
        Assert.NotNull(payload);
        Assert.NotEmpty(payload!.Items);
        Assert.Equal("pack-9001", payload.Items[0].PackId);
    }

    [Trait("Category", TestCategories.Unit)]
    [Fact]
    public async Task EvidenceAuditRoutes_ReturnExpectedPayloads()
    {
        ConfigureAuthHeaders(_client, Guid.NewGuid().ToString("D"), StellaOpsScopes.EvidenceRead);

        var packDetail = await _client.GetFromJsonAsync<EvidencePackDetailDto>(
            "/api/v1/evidence/packs/pack-9001",
            TestContext.Current.CancellationToken);
        Assert.NotNull(packDetail);
        Assert.Equal("chain-9912", packDetail!.ProofChainId);

        var proof = await _client.GetFromJsonAsync<ProofChainDetailDto>(
            "/api/v1/evidence/proofs/sha256:beef000000000000000000000000000000000000000000000000000000000003",
            TestContext.Current.CancellationToken);
        Assert.NotNull(proof);
        Assert.Equal("valid", proof!.Status);

        var audit = await _client.GetFromJsonAsync<EvidenceAuditResponseDto>(
            "/api/v1/evidence/audit",
            TestContext.Current.CancellationToken);
        Assert.NotNull(audit);
        Assert.True(audit!.Total >= 1);

        var receipt = await _client.GetFromJsonAsync<CvssReceiptDto>(
            "/api/v1/evidence/receipts/cvss/CVE-2026-1234",
            TestContext.Current.CancellationToken);
        Assert.NotNull(receipt);
        Assert.Equal(9.8m, receipt!.BaseScore);
    }

    [Trait("Category", TestCategories.Unit)]
    [Fact]
    public async Task EvidenceAuditRoutes_UnknownResources_ReturnNotFound()
    {
        ConfigureAuthHeaders(_client, Guid.NewGuid().ToString("D"), StellaOpsScopes.EvidenceRead);

        var packResponse = await _client.GetAsync("/api/v1/evidence/packs/missing-pack", TestContext.Current.CancellationToken);
        Assert.Equal(HttpStatusCode.NotFound, packResponse.StatusCode);

        var proofResponse = await _client.GetAsync("/api/v1/evidence/proofs/sha256:missing", TestContext.Current.CancellationToken);
        Assert.Equal(HttpStatusCode.NotFound, proofResponse.StatusCode);

        var receiptResponse = await _client.GetAsync("/api/v1/evidence/receipts/cvss/CVE-0000-0000", TestContext.Current.CancellationToken);
        Assert.Equal(HttpStatusCode.NotFound, receiptResponse.StatusCode);
    }

    private static void ConfigureAuthHeaders(HttpClient client, string tenantId, string scopes)
    {
        client.DefaultRequestHeaders.Clear();
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(EvidenceLockerTestAuthHandler.SchemeName);
        client.DefaultRequestHeaders.Add("X-Test-Tenant", tenantId);
        client.DefaultRequestHeaders.Add("X-Test-Scopes", scopes);
    }

    public void Dispose()
    {
        _client.Dispose();
    }
}