{ config, pkgs, lib, ... }:

with lib;

let
  cfg = config.services.naxos.apps.immich;
in {
  options.services.naxos.apps.immich = {
    enable = mkEnableOption "Immich Self-Hosted Photo & Video Hub";

    runtime = mkOption {
      type = types.enum [ "systemd" "docker" ];
      default = "systemd";
      description = "Runtime to execute Immich (systemd for native bare-metal speed with NixOS package, docker for containerized).";
    };

    port = mkOption {
      type = types.port;
      default = 2283;
      description = "Web interface and API port.";
    };

    host = mkOption {
      type = types.str;
      default = "0.0.0.0";
      description = "Listen host.";
    };

    mediaLocation = mkOption {
      type = types.str;
      default = "/tank/media/photos";
      description = "ZFS dataset or path where uploaded photos and videos are stored.";
    };

    accelerationDevices = mkOption {
      type = types.listOf types.str;
      default = [ "/dev/dri/renderD128" ];
      description = "DRM render devices for hardware-accelerated transcoding.";
    };

    machineLearningCPUQuota = mkOption {
      type = types.str;
      default = "200%";
      description = "CPU quota for machine learning service (200% = 2 full cores).";
    };

    openFirewall = mkOption {
      type = types.bool;
      default = true;
      description = "Open port in firewall.";
    };
  };

  config = mkIf cfg.enable {
    # Systemd / Native NixOS Deployment
    services.immich = mkIf (cfg.runtime == "systemd") {
      enable = true;
      host = cfg.host;
      port = cfg.port;
      mediaLocation = cfg.mediaLocation;
      openFirewall = cfg.openFirewall;
      accelerationDevices = cfg.accelerationDevices;
    };

    services.redis.servers.immich = mkIf (cfg.runtime == "systemd") {
      logLevel = "warning";
    };

    systemd.services.immich-machine-learning = mkIf (cfg.runtime == "systemd") {
      serviceConfig = {
        CPUQuota = cfg.machineLearningCPUQuota;
        Nice = 19;
      };
    };

    users.users.immich = mkIf (cfg.runtime == "systemd") {
      extraGroups = [ "video" "render" ];
    };

    systemd.tmpfiles.rules = [
      "d ${cfg.mediaLocation} 0750 immich immich -"
    ];
  };
}