using HSchool.Content;

namespace HSchool.Content.Tests;

public class DiseaseDefTests
{
    private readonly CatalogLoader _loader = new();

    [Fact]
    public void VanillaCore_LoadsSeveralDiseases()
    {
        var catalog = LoadVanilla();

        Assert.True(catalog.Diseases.ContainsKey("CommonCold"));
        Assert.True(catalog.Diseases.ContainsKey("Influenza"));
        Assert.True(catalog.Diseases.ContainsKey("StomachBug"));
        Assert.True(catalog.Diseases.ContainsKey("Otitis"));

        var cold = catalog.Diseases["CommonCold"];
        Assert.Equal(DiseaseFamilies.Respiratory, cold.Family);
        Assert.Equal(5f, cold.ColdBelowC);
        Assert.True(cold.Stages.Count >= 2);
        Assert.Equal(0.5f, cold.IncubationDays);
        Assert.Equal(14f, cold.ImmunityDays);

        Assert.Equal("ОРВИ", catalog.Label("ru", cold));
        Assert.Equal("Common cold", catalog.Label("en", cold));
        Assert.Equal(1f, catalog.BehaviorRules!.DiseaseVectorScale);
    }

    [Fact]
    public void MissingFamily_FailsTheCatalog()
    {
        var documents = PackDocuments.FromDirectory(
                CatalogLoader.CorePackId,
                Path.Combine(AppContext.BaseDirectory, "vanilla"))
            .Append(PackDocuments.Def(
                CatalogLoader.CorePackId,
                "diseases",
                "bad",
                """
                {
                  "defName": "BadDisease",
                  "incubationDays": 1,
                  "immunityDays": 1,
                  "stages": [{ "minSeverity": 0, "severityPerDay": 0.1, "progressPerDay": 0.1 }]
                }
                """))
            .ToList();

        var ex = Assert.Throws<ContentLoadException>(() => _loader.Load([CatalogLoader.CorePackId], documents));
        Assert.Contains("family", ex.Message, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public void MissingStages_FailsTheCatalog()
    {
        var documents = PackDocuments.FromDirectory(
                CatalogLoader.CorePackId,
                Path.Combine(AppContext.BaseDirectory, "vanilla"))
            .Append(PackDocuments.Def(
                CatalogLoader.CorePackId,
                "diseases",
                "bad-stages",
                """{ "defName": "NoStages", "family": "respiratory", "incubationDays": 0, "immunityDays": 1 }"""))
            .ToList();

        var ex = Assert.Throws<ContentLoadException>(() => _loader.Load([CatalogLoader.CorePackId], documents));
        Assert.Contains("stages", ex.Message, StringComparison.OrdinalIgnoreCase);
    }

    private DefCatalog LoadVanilla()
    {
        var root = Path.Combine(AppContext.BaseDirectory, "vanilla");
        return _loader.Load([CatalogLoader.CorePackId], PackDocuments.FromDirectory(CatalogLoader.CorePackId, root));
    }
}