using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.Infrastructure;

public class StartupDbInitSkipContractTests
{
    [Fact]
    public void ExistingSchemaMode_SkipsPluginDatabaseInitializationBeforeSourceBackfill()
    {
        var source = File.ReadAllText(Path.Combine(
            RepoRoot(), "server", "Plugins", "Admin.NET.Plugin.AiDOP", "Startup.cs"));

        var guard = source.IndexOf("Environment.GetEnvironmentVariable(\"DOCKER_SKIP_DBINIT\")", StringComparison.Ordinal);
        var backfill = source.IndexOf("MdpSchemaAligner.EnsureSourceIdentityAsync", StringComparison.Ordinal);

        Assert.True(guard >= 0);
        Assert.True(backfill > guard);
        Assert.Contains("return;", source[guard..backfill], StringComparison.Ordinal);
    }

    [Fact]
    public void ExistingSchemaMode_SkipsApprovalFlowCodeFirstAndSeeds()
    {
        var source = File.ReadAllText(Path.Combine(
            RepoRoot(), "server", "Plugins", "Admin.NET.Plugin.ApprovalFlow", "Startup.cs"));

        var middleware = source.IndexOf("app.UseApprovalFlow()", StringComparison.Ordinal);
        var guard = source.IndexOf("Environment.GetEnvironmentVariable(\"DOCKER_SKIP_DBINIT\")", StringComparison.Ordinal);
        var codeFirst = source.IndexOf("db.CodeFirst.InitTables", StringComparison.Ordinal);
        var seeds = source.IndexOf("EnsureSystemTemplates()", StringComparison.Ordinal);

        Assert.True(middleware >= 0);
        Assert.True(guard > middleware);
        Assert.True(codeFirst > guard);
        Assert.True(seeds > codeFirst);
        Assert.Contains("return;", source[guard..codeFirst], StringComparison.Ordinal);
    }

    private static string RepoRoot()
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        while (dir != null && !Directory.Exists(Path.Combine(dir.FullName, "server")))
            dir = dir.Parent;
        return dir?.FullName ?? throw new DirectoryNotFoundException("Repository root not found.");
    }
}