using AxCopilot.Services.Agent;
using FluentAssertions;
using Xunit;

namespace AxCopilot.Tests.Services;

public class DeckRepairGuideServiceTests
{
    [Fact]
    public void BuildGuide_ShouldReturnNone_WhenNoIssues()
    {
        var report = new DeckQualityReport(92, ["Includes Recommendation"], [], []);

        var guide = DeckRepairGuideService.BuildGuide(report);

        guide.Should().Be("Deck repair guide: none");
    }

    [Fact]
    public void BuildGuide_ShouldTranslateDeckIssuesIntoActionableGuidance()
    {
        var report = new DeckQualityReport(
            61,
            [],
            [
                new DeckReviewIssue("Executive Summary slide is missing.", DeckReviewSeverity.Critical),
                new DeckReviewIssue("Slide 3: content density is high and should be simplified.", DeckReviewSeverity.Warning),
                new DeckReviewIssue("Evidence slides such as charts, tables, or comparisons are limited.", DeckReviewSeverity.Warning),
            ],
            []);

        var guide = DeckRepairGuideService.BuildGuide(report);

        guide.Should().Contain("Executive Summary");
        guide.Should().Contain("Reduce text density");
        guide.Should().Contain("evidence");
    }

    [Fact]
    public void BuildGuide_ShouldSurfaceAppendixAndHeadlineActions()
    {
        var report = new DeckQualityReport(
            58,
            [],
            [
                new DeckReviewIssue("Appendix or evidence slide is limited.", DeckReviewSeverity.Info),
                new DeckReviewIssue("Found 2 duplicate headline(s).", DeckReviewSeverity.Warning)
            ],
            []);

        var guide = DeckRepairGuideService.BuildGuide(report);

        guide.Should().Contain("appendix");
        guide.Should().Contain("distinct message");
    }

    [Fact]
    public void BuildGuide_ShouldTranslateStorylineGapIntoConcreteAction()
    {
        var report = new DeckQualityReport(
            63,
            [],
            [
                new DeckReviewIssue("Storyline expects an options or comparison slide but none is present.", DeckReviewSeverity.Warning)
            ],
            ["Executive Summary", "Options"]);

        var guide = DeckRepairGuideService.BuildGuide(report);

        guide.Should().Contain("comparison slide");
        guide.Should().Contain("storyline");
    }
}