using System.Net.Http.Json;
using ItWorx.KnowledgeHub.Contracts.Knowledge;
using ItWorx.KnowledgeHub.IntegrationTests.Infrastructure;

namespace ItWorx.KnowledgeHub.IntegrationTests.Knowledge;

/// <summary>Templates create valid study note, runbook, ADR and troubleshooting
/// documents (docs/27-acceptance-matrix.md, M2-A06).</summary>
[Collection(PostgresTestGroup.Name)]
public sealed class TemplateTests(PostgresContainerFixture postgres) : OwnerSetupTestBase(postgres)
{
    [Fact]
    public async Task All_four_built_in_templates_are_listed()
    {
        using var client = Factory.CreateClient();
        await SetupHelper.LoginAsync(client, OwnerEmail, OwnerPassword);

        var templates = await client.GetFromJsonAsync<IReadOnlyList<TemplateSummary>>("/api/v1/templates");

        Assert.NotNull(templates);
        Assert.Equal(4, templates.Count);
        Assert.Contains(templates, t => t.Key == "study-note");
        Assert.Contains(templates, t => t.Key == "runbook");
        Assert.Contains(templates, t => t.Key == "architecture-decision");
        Assert.Contains(templates, t => t.Key == "troubleshooting");
    }

    [Theory]
    [InlineData("study-note", "StudyNote", "## Kernidee")]
    [InlineData("runbook", "Runbook", "## Rollback")]
    [InlineData("architecture-decision", "ArchitectureDecision", "## Beslissing")]
    [InlineData("troubleshooting", "Troubleshooting", "## Escalatie")]
    public async Task Creating_a_page_from_a_template_produces_the_expected_structure(
        string templateKey,
        string expectedDocumentType,
        string expectedSectionHeading)
    {
        using var client = Factory.CreateClient();
        await SetupHelper.LoginAsync(client, OwnerEmail, OwnerPassword);

        var response = await SetupHelper.PostWithCsrfAsync(
            client,
            "/api/v1/pages",
            new CreatePageRequest(null, $"Sjabloontest {templateKey}", null, null, templateKey));
        response.EnsureSuccessStatusCode();

        var page = await response.Content.ReadFromJsonAsync<PageDetail>();
        Assert.NotNull(page);
        Assert.Equal(expectedDocumentType, page.DocumentType);
        Assert.Contains($"# Sjabloontest {templateKey}", page.Markdown, StringComparison.Ordinal);
        Assert.Contains(expectedSectionHeading, page.Markdown, StringComparison.Ordinal);
    }

    [Fact]
    public async Task An_unknown_template_key_is_rejected()
    {
        using var client = Factory.CreateClient();
        await SetupHelper.LoginAsync(client, OwnerEmail, OwnerPassword);

        var response = await SetupHelper.PostWithCsrfAsync(
            client, "/api/v1/pages", new CreatePageRequest(null, "Ongeldig sjabloon", null, null, "does-not-exist"));

        Assert.Equal(System.Net.HttpStatusCode.UnprocessableEntity, response.StatusCode);
    }
}