using System;
using System.Linq;
using StellaOps.Platform.Database;
using Xunit;

namespace StellaOps.Cli.Tests.Commands;

public class MigrationModuleRegistryTests
{
    [Fact]
    public void Modules_Populated_With_All_Postgres_Modules()
    {
        var modules = MigrationModuleRegistry.Modules;
        Assert.True(modules.Count >= 20, $"Expected at least 20 registered modules, found {modules.Count}");
        Assert.Contains(modules, m => m.Name == "AdvisoryAI" && m.SchemaName == "advisoryai");
        Assert.Contains(modules, m => m.Name == "AirGap" && m.SchemaName == "airgap");
        Assert.Contains(modules, m => m.Name == "Authority" && m.SchemaName == "authority");
        Assert.Contains(modules, m => m.Name == "Eventing" && m.SchemaName == "timeline");
        Assert.Contains(modules, m => m.Name == "Evidence" && m.SchemaName == "evidence");
        Assert.Contains(modules, m => m.Name == "Scheduler" && m.SchemaName == "scheduler");
        Assert.Contains(modules, m => m.Name == "Concelier" && m.SchemaName == "vuln");
        Assert.Contains(modules, m => m.Name == "Policy" && m.SchemaName == "policy");
        Assert.Contains(modules, m => m.Name == "Notify" && m.SchemaName == "notify");
        Assert.Contains(modules, m => m.Name == "Excititor" && m.SchemaName == "vex");
        Assert.Contains(modules, m => m.Name == "PluginRegistry" && m.SchemaName == "platform");
        Assert.Contains(modules, m => m.Name == "Platform" && m.SchemaName == "release");
        var scanner = Assert.Single(modules, static module => module.Name == "Scanner" && module.SchemaName == "scanner");
        Assert.Equal(2, scanner.Sources.Count);
        Assert.Contains(
            scanner.Sources,
            static source => string.Equals(
                source.ResourcePrefix,
                "StellaOps.Scanner.Triage.Migrations",
                StringComparison.Ordinal));
        Assert.Contains(modules, m => m.Name == "TimelineIndexer" && m.SchemaName == "timeline");
        Assert.Contains(modules, m => m.Name == "VexHub" && m.SchemaName == "vexhub");
        Assert.Contains(modules, m => m.Name == "Remediation" && m.SchemaName == "remediation");
        Assert.Contains(modules, m => m.Name == "VexLens" && m.SchemaName == "vexlens");
        Assert.Contains(modules, m => m.Name == "SbomLineage" && m.SchemaName == "sbom");
        Assert.Contains(modules, m => m.Name == "ReachGraph" && m.SchemaName == "reachgraph");
        Assert.Contains(modules, m => m.Name == "Verdict" && m.SchemaName == "stellaops");
        Assert.Contains(modules, m => m.Name == "FindingsLedger" && m.SchemaName == "findings");
        Assert.Contains(modules, m => m.Name == "Signer" && m.SchemaName == "signer");
        Assert.Contains(modules, m => m.Name == "IssuerDirectory" && m.SchemaName == "issuer");
        Assert.Contains(modules, m => m.Name == "Workflow" && m.SchemaName == "workflow");
        Assert.Contains(modules, m => m.Name == "PacksRegistry" && m.SchemaName == "packs");
        Assert.Contains(modules, m => m.Name == "OpsMemory" && m.SchemaName == "opsmemory");
        Assert.Contains(modules, m => m.Name == "ExportCenter" && m.SchemaName == "export_center");
        Assert.Contains(modules, m => m.Name == "Integrations" && m.SchemaName == "integrations");
        Assert.Contains(modules, m => m.Name == "Replay" && m.SchemaName == "replay");
        Assert.Contains(modules, m => m.Name == "RiskEngine" && m.SchemaName == "riskengine");
        Assert.True(MigrationModuleRegistry.ModuleNames.Count() >= 36);
    }

    [Fact]
    public void Modules_Are_AutoDiscovered_From_Plugins()
    {
        var pluginTypes = typeof(MigrationModuleRegistry)
            .Assembly
            .GetTypes()
            .Where(static type =>
                typeof(IMigrationModulePlugin).IsAssignableFrom(type) &&
                !type.IsAbstract &&
                !type.IsInterface)
            .ToArray();

        Assert.NotEmpty(pluginTypes);
        Assert.Equal(pluginTypes.Length, MigrationModuleRegistry.Modules.Count);
    }

    [Fact]
    public void FindModule_Finds_By_Name_CaseInsensitive()
    {
        var result = MigrationModuleRegistry.FindModule("authority");
        Assert.NotNull(result);
        Assert.Equal("authority", result!.SchemaName);
    }

    [Fact]
    public void GetModules_Filtered_Returns_Single()
    {
        var result = MigrationModuleRegistry.GetModules("Authority");
        var module = Assert.Single(result);
        Assert.Equal("authority", module.SchemaName);
    }

    [Fact]
    public void GetModules_All_Returns_All()
    {
        var result = MigrationModuleRegistry.GetModules(null);
        Assert.True(result.Count() >= 36);
    }
}