using KubernetesWorkflow;
using KubernetesWorkflow.Recipe;
using Utils;

namespace CodexPlugin
{
    public class CodexContainerRecipe : ContainerRecipeFactory
    {
        public const string ApiPortTag = "codex_api_port";
        public const string ListenPortTag = "codex_listen_port";
        public const string MetricsPortTag = "codex_metrics_port";
        public const string DiscoveryPortTag = "codex_discovery_port";

        // Used by tests for time-constraint assertions.
        public static readonly TimeSpan MaxUploadTimePerMegabyte = TimeSpan.FromSeconds(2.0);
        public static readonly TimeSpan MaxDownloadTimePerMegabyte = TimeSpan.FromSeconds(2.0);
        private readonly CodexDockerImage codexDockerImage;

        public override string AppName => "codex";
        public override string Image => codexDockerImage.GetCodexDockerImage();

        public CodexContainerRecipe(CodexDockerImage codexDockerImage)
        {
            this.codexDockerImage = codexDockerImage;
        }

        protected override void Initialize(StartupConfig startupConfig)
        {
            SetResourcesRequest(milliCPUs: 100, memory: 100.MB());
            //SetResourceLimits(milliCPUs: 4000, memory: 12.GB());

            SetSchedulingAffinity(notIn: "false");
            SetSystemCriticalPriority();

            var config = startupConfig.Get<CodexStartupConfig>();

            var apiPort = CreateApiPort(config, ApiPortTag);
            AddEnvVar("STORAGE_API_PORT", apiPort);
            AddEnvVar("STORAGE_API_BINDADDR", "0.0.0.0");

            var dataDir = $"datadir{ContainerNumber}";
            AddEnvVar("STORAGE_DATA_DIR", dataDir);
            AddVolume($"codex/{dataDir}", GetVolumeCapacity(config));

            var discPort = CreateDiscoveryPort(config);
            AddEnvVar("STORAGE_DISC_PORT", discPort);
            AddEnvVar("STORAGE_LOG_LEVEL", config.LogLevelWithTopics());

            if (config.PublicTestNet != null)
            {
                // This makes the node announce itself to its public IP address.
                AddEnvVar("NAT_IP_AUTO", "false");
                AddEnvVar("NAT_PUBLIC_IP_AUTO", PublicIpService.Address);
            }
            else
            {
                // This makes the node announce itself to its local (pod) IP address.
                AddEnvVar("NAT_IP_AUTO", "true");
            }

            var listenPort = CreateListenPort(config);
            AddEnvVar("STORAGE_LISTEN_ADDRS", $"/ip4/0.0.0.0/tcp/{listenPort.Number}");

            if (!string.IsNullOrEmpty(config.BootstrapSpr))
            {
                AddEnvVar("STORAGE_BOOTSTRAP_NODE", config.BootstrapSpr);
            }
            if (config.StorageQuota != null)
            {
                AddEnvVar("STORAGE_STORAGE_QUOTA", config.StorageQuota.SizeInBytes.ToString()!);
            }
            if (config.BlockTTL != null)
            {
                AddEnvVar("STORAGE_BLOCK_TTL", config.BlockTTL.ToString()!);
            }
            if (config.BlockMaintenanceInterval != null)
            {
                AddEnvVar("STORAGE_BLOCK_MI", Convert.ToInt32(config.BlockMaintenanceInterval.Value.TotalSeconds).ToString());
            }
            if (config.BlockMaintenanceNumber != null)
            {
                AddEnvVar("STORAGE_BLOCK_MN", config.BlockMaintenanceNumber.ToString()!);
            }
            if (config.MetricsEnabled)
            {
                var metricsPort = CreateApiPort(config, MetricsPortTag);
                AddEnvVar("STORAGE_METRICS", "true");
                AddEnvVar("STORAGE_METRICS_ADDRESS", "0.0.0.0");
                AddEnvVar("STORAGE_METRICS_PORT", metricsPort);
                AddPodAnnotation("prometheus.io/scrape", "true");
                AddPodAnnotation("prometheus.io/port", metricsPort.Number.ToString());
            }

            if (!string.IsNullOrEmpty(config.NameOverride))
            {
                AddEnvVar("CODEX_NODENAME", config.NameOverride);
            }
        }
        
        private Port CreateApiPort(CodexStartupConfig config, string tag)
        {
            if (config.PublicTestNet == null) return AddExposedPort(tag);
            return AddInternalPort(tag);
        }

        private Port CreateListenPort(CodexStartupConfig config)
        {
            if (config.PublicTestNet == null) return AddInternalPort(ListenPortTag);

            return AddExposedPort(config.PublicTestNet.PublicListenPort, ListenPortTag);
        }

        private Port CreateDiscoveryPort(CodexStartupConfig config)
        {
            if (config.PublicTestNet == null) return AddInternalPort(DiscoveryPortTag, PortProtocol.UDP);

            return AddExposedPort(config.PublicTestNet.PublicDiscoveryPort, DiscoveryPortTag, PortProtocol.UDP);
        }

        private ByteSize GetVolumeCapacity(CodexStartupConfig config)
        {
            if (config.StorageQuota != null) return config.StorageQuota.Multiply(1.2);
            // Default Codex quota: 8 Gb, using +20% to be safe.
            return 8.GB().Multiply(1.2);
        }
    }
}