// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Aspire.Cli.EndToEnd.Tests.Helpers;
using Hex1b.Automation;
using Xunit;
 
namespace Aspire.Cli.EndToEnd.Tests;
 
/// <summary>
/// E2E test for <c>aspire deploy</c> to Kubernetes: DeployK8sWithPostgres.
/// </summary>
public sealed class KubernetesDeployWithPostgresTests(ITestOutputHelper output)
{
    private const string ProjectName = "K8sDeployTest";
 
    [Fact]
    [CaptureWorkspaceOnFailure]
    public async Task DeployK8sWithPostgres()
    {
        var repoRoot = CliE2ETestHelpers.GetRepoRoot();
        var strategy = CliInstallStrategy.Detect(output.WriteLine);
        using var workspace = TemporaryWorkspace.Create(output);
 
        var clusterName = KubernetesDeployTestHelpers.GenerateUniqueClusterName();
        var k8sNamespace = $"test-{clusterName[..16]}";
 
        output.WriteLine($"Cluster name: {clusterName}");
        output.WriteLine($"Namespace: {k8sNamespace}");
 
        using var terminal = CliE2ETestHelpers.CreateDockerTestTerminal(repoRoot, strategy, output, mountDockerSocket: true, workspace: workspace);
        var counter = new SequenceCounter();
        var auto = new Hex1bTerminalAutomator(terminal, defaultTimeout: TimeSpan.FromSeconds(500));
        await using var terminalRun = CliE2ETestHelpers.StartRun(terminal, workspace, auto, counter, output, TestContext.Current.CancellationToken);
 
        await auto.PrepareDockerEnvironmentAsync(counter, workspace);
        await auto.InstallAspireCliAsync(strategy, counter);
 
        await auto.VerifyPullRequestCliVersionAsync(counter);
 
        try
        {
            await auto.InstallKindAndHelmAsync(counter);
            await auto.CreateKindClusterWithRegistryAsync(counter, clusterName);
 
            var appHostCode = $$"""
                #pragma warning disable ASPIRECOMPUTE003
                using Aspire.Hosting;
                using Aspire.Hosting.Kubernetes;
 
                var builder = DistributedApplication.CreateBuilder(args);
 
                var registryEndpoint = builder.AddParameter("registryendpoint");
                var registry = builder.AddContainerRegistry("registry", registryEndpoint);
 
                var postgres = builder.AddPostgres("pg");
 
                var api = builder.AddProject<Projects.{{ProjectName}}_ApiService>("server")
                    .WithReference(postgres)
                    .WaitFor(postgres)
                    .WithExternalHttpEndpoints();
 
                builder.AddKubernetesEnvironment("env")
                    .WithHelm(helm =>
                    {
                        helm.WithNamespace(builder.AddParameter("namespace"));
                        helm.WithChartVersion(builder.AddParameter("chartversion"));
                    });
 
                builder.Build().Run();
                """;
 
            var apiProgramCode = """
                using Npgsql;
 
                var builder = WebApplication.CreateBuilder(args);
                builder.AddServiceDefaults();
                builder.AddNpgsqlDataSource("pg");
 
                var app = builder.Build();
                app.MapDefaultEndpoints();
 
                app.MapGet("/test-deployment", async (NpgsqlDataSource dataSource) =>
                {
                    await using var conn = await dataSource.OpenConnectionAsync();
                    await using var cmd = conn.CreateCommand();
                    cmd.CommandText = "SELECT 1 AS result";
                    var result = await cmd.ExecuteScalarAsync();
 
                    if (Convert.ToInt32(result) == 1)
                    {
                        return Results.Ok("PASSED: PostgreSQL SELECT 1 works");
                    }
                    return Results.Problem($"FAILED: expected 1, got '{result}'");
                });
 
                app.Run();
                """;
 
            await auto.ScaffoldK8sDeployProjectAsync(
                counter,
                ProjectName,
                Path.Combine(workspace.WorkspaceRoot.FullName, ProjectName),
                appHostHostingPackages: ["Aspire.Hosting.Kubernetes", "Aspire.Hosting.PostgreSQL"],
                apiClientPackages: ["Aspire.Npgsql"],
                appHostCode: appHostCode,
                apiProgramCode: apiProgramCode,
                output: output);
 
            await auto.AspireDeployInteractiveAsync(
                counter,
                parameterResponses:
                [
                    ("registryendpoint", "localhost:5001"),
                    ("namespace", k8sNamespace),
                    ("chartversion", "0.1.0"),
                ]);
 
            await auto.VerifyDeploymentAsync(
                counter,
                @namespace: k8sNamespace,
                serviceName: "server",
                localPort: 18082,
                testPath: "/test-deployment");
 
            await auto.CleanupKubernetesDeploymentAsync(counter, clusterName);
        }
        finally
        {
            await KubernetesDeployTestHelpers.CleanupKindClusterOutOfBandAsync(clusterName, output);
        }
    }
}