using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using StellaOps.Infrastructure.Postgres.Testing;
using StellaOps.Scanner.Storage;
using StellaOps.Scanner.Surface.Validation;
using StellaOps.Scanner.WebService.Diagnostics;

namespace StellaOps.Scanner.WebService.Tests;

public sealed class ScannerApplicationFactory : WebApplicationFactory<ServiceStatus>
{
    private readonly ScannerWebServicePostgresFixture postgresFixture;
    private readonly Dictionary<string, string?> configuration = new()
    {
        ["scanner:storage:driver"] = "postgres",
        ["scanner:storage:dsn"] = string.Empty,
        ["scanner:storage:database"] = string.Empty,
        ["scanner:queue:driver"] = "redis",
        ["scanner:queue:dsn"] = "redis://localhost:6379",
        ["scanner:artifactStore:driver"] = "rustfs",
        ["scanner:artifactStore:endpoint"] = "https://rustfs.local/api/v1/",
        ["scanner:artifactStore:accessKey"] = "test-access",
        ["scanner:artifactStore:secretKey"] = "test-secret",
        ["scanner:artifactStore:bucket"] = "scanner-artifacts",
        ["scanner:artifactStore:timeoutSeconds"] = "30",
        ["scanner:telemetry:minimumLogLevel"] = "Information",
        ["scanner:telemetry:enableRequestLogging"] = "false",
        ["scanner:events:enabled"] = "false",
        ["scanner:features:enableSignedReports"] = "false"
    };

    private readonly Action<IDictionary<string, string?>>? configureConfiguration;
    private readonly Action<IServiceCollection>? configureServices;

    public ScannerApplicationFactory(
        Action<IDictionary<string, string?>>? configureConfiguration = null,
        Action<IServiceCollection>? configureServices = null)
    {
        postgresFixture = new ScannerWebServicePostgresFixture();
        postgresFixture.InitializeAsync().GetAwaiter().GetResult();

        configuration["scanner:storage:dsn"] = postgresFixture.ConnectionString;
        configuration["scanner:storage:database"] = postgresFixture.SchemaName;
        this.configureConfiguration = configureConfiguration;
        this.configureServices = configureServices;
    }

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        configureConfiguration?.Invoke(configuration);

        builder.UseEnvironment("Testing");

        Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__ENABLED", null);
        Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__ALLOWANONYMOUSFALLBACK", null);
        Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__ISSUER", null);
        Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__AUDIENCES__0", null);
        Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__CLIENTID", null);
        Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__CLIENTSECRET", null);
        Environment.SetEnvironmentVariable("SCANNER__STORAGE__DSN", configuration["scanner:storage:dsn"]);
        Environment.SetEnvironmentVariable("SCANNER__STORAGE__DATABASE", configuration["scanner:storage:database"]);
        Environment.SetEnvironmentVariable("SCANNER__QUEUE__DSN", configuration["scanner:queue:dsn"]);
        Environment.SetEnvironmentVariable("SCANNER__ARTIFACTSTORE__ENDPOINT", configuration["scanner:artifactStore:endpoint"]);
        Environment.SetEnvironmentVariable("SCANNER__ARTIFACTSTORE__ACCESSKEY", configuration["scanner:artifactStore:accessKey"]);
        Environment.SetEnvironmentVariable("SCANNER__ARTIFACTSTORE__SECRETKEY", configuration["scanner:artifactStore:secretKey"]);
        Environment.SetEnvironmentVariable("SCANNER_SURFACE_FS_ENDPOINT", "https://surface.local");
        Environment.SetEnvironmentVariable("SCANNER_SURFACE_FS_BUCKET", configuration["scanner:artifactStore:bucket"]);
        Environment.SetEnvironmentVariable("SCANNER_SURFACE_PREFETCH_ENABLED", "false");
        Environment.SetEnvironmentVariable("SCANNER_SURFACE_SECRETS_PROVIDER", "file");
        Environment.SetEnvironmentVariable("SCANNER_SURFACE_SECRETS_ROOT", Path.GetTempPath());
        Environment.SetEnvironmentVariable("SCANNER_SURFACE_SECRETS_TENANT", "tenant-a");
        if (configuration.TryGetValue("scanner:events:enabled", out var eventsEnabled))
        {
            Environment.SetEnvironmentVariable("SCANNER__EVENTS__ENABLED", eventsEnabled);
        }

        if (configuration.TryGetValue("scanner:authority:enabled", out var authorityEnabled))
        {
            Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__ENABLED", authorityEnabled);
        }

        if (configuration.TryGetValue("scanner:authority:allowAnonymousFallback", out var allowAnonymous))
        {
            Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__ALLOWANONYMOUSFALLBACK", allowAnonymous);
        }

        if (configuration.TryGetValue("scanner:authority:issuer", out var authorityIssuer))
        {
            Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__ISSUER", authorityIssuer);
        }

        if (configuration.TryGetValue("scanner:authority:audiences:0", out var primaryAudience))
        {
            Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__AUDIENCES__0", primaryAudience);
        }

        if (configuration.TryGetValue("scanner:authority:clientId", out var clientId))
        {
            Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__CLIENTID", clientId);
        }

        if (configuration.TryGetValue("scanner:authority:clientSecret", out var clientSecret))
        {
            Environment.SetEnvironmentVariable("SCANNER__AUTHORITY__CLIENTSECRET", clientSecret);
        }

        builder.ConfigureAppConfiguration((_, configBuilder) =>
        {
            configBuilder.AddInMemoryCollection(configuration);
        });

        builder.ConfigureTestServices(services =>
        {
            configureServices?.Invoke(services);
            services.RemoveAll<ISurfaceValidatorRunner>();
            services.AddSingleton<ISurfaceValidatorRunner, TestSurfaceValidatorRunner>();
        });
    }

    protected override void Dispose(bool disposing)
    {
        base.Dispose(disposing);

        if (disposing)
        {
            postgresFixture.DisposeAsync().GetAwaiter().GetResult();
        }
    }

    private sealed class TestSurfaceValidatorRunner : ISurfaceValidatorRunner
    {
        public ValueTask<SurfaceValidationResult> RunAllAsync(
            SurfaceValidationContext context,
            CancellationToken cancellationToken = default)
            => ValueTask.FromResult(SurfaceValidationResult.Success());

        public ValueTask EnsureAsync(
            SurfaceValidationContext context,
            CancellationToken cancellationToken = default)
            => ValueTask.CompletedTask;
    }

    private sealed class ScannerWebServicePostgresFixture : PostgresIntegrationFixture
    {
        protected override System.Reflection.Assembly? GetMigrationAssembly() => typeof(ScannerStorageOptions).Assembly;

        protected override string GetModuleName() => "Scanner.Storage.WebService.Tests";
    }
}