using KubernetesWorkflow;

namespace DistTestCore
{
    public class GrafanaStarter : BaseStarter
    {
        private const string StorageQuotaThresholdReplaceToken = "\"<CODEX_STORAGEQUOTA>\"";
        private const string BytesUsedGraphAxisSoftMaxReplaceToken = "\"<CODEX_BYTESUSED_SOFTMAX>\"";

        public GrafanaStarter(TestLifecycle lifecycle)
            : base(lifecycle)
        {
        }

        public GrafanaStartInfo StartDashboard(RunningContainer prometheusContainer)//, CodexSetup codexSetup)
        {
            return null!;
            //LogStart($"Starting dashboard server");

            //var grafanaContainer = StartGrafanaContainer();
            //var grafanaAddress = lifecycle.Configuration.GetAddress(grafanaContainer);

            //var http = new Http(lifecycle.Log, new DefaultTimeSet(), grafanaAddress, "api/", AddBasicAuth);

            //Log("Connecting datasource...");
            //AddDataSource(http, prometheusContainer);

            //Log("Uploading dashboard configurations...");
            //var jsons = ReadEachDashboardJsonFile(codexSetup);
            //var dashboardUrls = jsons.Select(j => UploadDashboard(http, grafanaContainer, j)).ToArray();

            //LogEnd("Dashboard server started.");

            //return new GrafanaStartInfo(dashboardUrls, grafanaContainer);
        }

        //private RunningContainer StartGrafanaContainer()
        //{
        //    var startupConfig = new StartupConfig();

        //    var workflow = lifecycle.WorkflowCreator.CreateWorkflow();
        //    var grafanaContainers = workflow.Start(1, Location.Unspecified, new GrafanaContainerRecipe(), startupConfig);
        //    if (grafanaContainers.Containers.Length != 1) throw new InvalidOperationException("Expected 1 dashboard container to be created.");

        //    return grafanaContainers.Containers.First();
        //}

        //private void AddBasicAuth(HttpClient client)
        //{
        //    client.SetBasicAuthentication(
        //        GrafanaContainerRecipe.DefaultAdminUser,
        //        GrafanaContainerRecipe.DefaultAdminPassword);
        //}

        //private static void AddDataSource(Http http, RunningContainer prometheusContainer)
        //{
        //    var prometheusAddress = prometheusContainer.ClusterExternalAddress;
        //    var prometheusUrl = prometheusAddress.Host + ":" + prometheusAddress.Port;
        //    var response = http.HttpPostJson<GrafanaDataSourceRequest, GrafanaDataSourceResponse>("datasources", new GrafanaDataSourceRequest
        //    {
        //        uid = "c89eaad3-9184-429f-ac94-8ba0b1824dbb",
        //        name = "CodexPrometheus",
        //        type = "prometheus",
        //        url = prometheusUrl,
        //        access = "proxy",
        //        basicAuth = false,
        //        jsonData = new GrafanaDataSourceJsonData
        //        {
        //            httpMethod = "POST"
        //        }
        //    });

        //    if (response.message != "Datasource added")
        //    {
        //        throw new Exception("Test infra failure: Failed to add datasource to dashboard: " + response.message);
        //    }
        //}

        //public static string UploadDashboard(Http http, RunningContainer grafanaContainer, string dashboardJson)
        //{
        //    var request = GetDashboardCreateRequest(dashboardJson);
        //    var response = http.HttpPostString("dashboards/db", request);
        //    var jsonResponse = JsonConvert.DeserializeObject<GrafanaPostDashboardResponse>(response);
        //    if (jsonResponse == null || string.IsNullOrEmpty(jsonResponse.url)) throw new Exception("Failed to upload dashboard.");

        //    var grafanaAddress = grafanaContainer.ClusterExternalAddress;
        //    return grafanaAddress.Host + ":" + grafanaAddress.Port + jsonResponse.url;
        //}

        //private static string[] ReadEachDashboardJsonFile(CodexSetup codexSetup)
        //{
        //    var assembly = Assembly.GetExecutingAssembly();
        //    var resourceNames = new[]
        //    {
        //        "DistTestCore.Metrics.dashboard.json"
        //    };

        //    return resourceNames.Select(r => GetManifestResource(assembly, r, codexSetup)).ToArray();
        //}

        //private static string GetManifestResource(Assembly assembly, string resourceName, CodexSetup codexSetup)
        //{
        //    using var stream = assembly.GetManifestResourceStream(resourceName);
        //    if (stream == null) throw new Exception("Unable to find resource " + resourceName);
        //    using var reader = new StreamReader(stream);
        //    return ApplyReplacements(reader.ReadToEnd(), codexSetup);
        //}

        //private static string ApplyReplacements(string input, CodexSetup codexSetup)
        //{
        //    var quotaString = GetQuotaString(codexSetup);
        //    var softMaxString = GetSoftMaxString(codexSetup);

        //    return input
        //        .Replace(StorageQuotaThresholdReplaceToken, quotaString)
        //        .Replace(BytesUsedGraphAxisSoftMaxReplaceToken, softMaxString);
        //}

        //private static string GetQuotaString(CodexSetup codexSetup)
        //{
        //    return GetCodexStorageQuotaInBytes(codexSetup).ToString();
        //}

        //private static string GetSoftMaxString(CodexSetup codexSetup)
        //{
        //    var quota = GetCodexStorageQuotaInBytes(codexSetup);
        //    var softMax = Convert.ToInt64(quota * 1.1); // + 10%, for nice viewing.
        //    return softMax.ToString();
        //}

        //private static long GetCodexStorageQuotaInBytes(CodexSetup codexSetup)
        //{
        //    if (codexSetup.StorageQuota != null) return codexSetup.StorageQuota.SizeInBytes;

        //    // Codex default: 8GB
        //    return 8.GB().SizeInBytes;
        //}

        //private static string GetDashboardCreateRequest(string dashboardJson)
        //{
        //    return $"{{\"dashboard\": {dashboardJson} ,\"message\": \"Default Codex Dashboard\",\"overwrite\": false}}";
        //}
    }

    public class GrafanaStartInfo
    {
        public GrafanaStartInfo(string[] dashboardUrls, RunningContainer container)
        {
            DashboardUrls = dashboardUrls;
            Container = container;
        }

        public string[] DashboardUrls { get; }
        public RunningContainer Container { get; }
    }

    public class GrafanaDataSourceRequest
    {
        public string uid { get; set; } = string.Empty;
        public string name { get; set; } = string.Empty;
        public string type { get; set; } = string.Empty;
        public string url { get; set; } = string.Empty;
        public string access { get; set; } = string.Empty;
        public bool basicAuth { get; set; }
        public GrafanaDataSourceJsonData jsonData { get; set; } = new();
    }

    public class GrafanaDataSourceResponse
    {
        public int id { get; set; }
        public string message { get; set; } = string.Empty;
        public string name { get; set; } = string.Empty;
    }

    public class GrafanaDataSourceJsonData
    {
        public string httpMethod { get; set; } = string.Empty;
    }

    public class GrafanaPostDashboardResponse
    {
        public int id { get; set; }
        public string slug { get; set; } = string.Empty;
        public string status { get; set; } = string.Empty;
        public string uid { get; set; } = string.Empty;
        public string url { get; set; } = string.Empty;
        public int version { get; set; }
    }
}