# Immich Module
#
# Self-hosted photo and video backup (Google Photos alternative).
# For Tier 3 photo management.
#
# Note: Immich is complex and changes frequently. This module provides
# a starting point but may need updates. Check NixOS options for latest.
#
# Usage:
#   services.immich-managed.enable = true;
#   services.immich-managed.domain = "photos.yourdomain.com";

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

with lib;

let
  cfg = config.services.immich-managed;
in {
  options.services.immich-managed = {
    enable = mkEnableOption "managed Immich photo service";

    domain = mkOption {
      type = types.str;
      description = "Domain name for Immich.";
      example = "photos.example.com";
    };

    port = mkOption {
      type = types.port;
      default = 2283;
      description = "Port for Immich web interface.";
    };

    mediaLocation = mkOption {
      type = types.str;
      default = "/var/lib/immich";
      description = "Location for storing photos and videos.";
    };

    externalLibraryPaths = mkOption {
      type = types.listOf types.str;
      default = [];
      description = "Additional paths for external photo libraries.";
      example = [ "/mnt/photos/archive" ];
    };

    enableMachineLearning = mkOption {
      type = types.bool;
      default = true;
      description = "Enable ML features (face recognition, search).";
    };
  };

  config = mkIf cfg.enable {
    # Immich service (NixOS 24.05+)
    services.immich = {
      enable = true;
      port = cfg.port;
      mediaLocation = cfg.mediaLocation;

      # Machine learning (optional, resource-intensive)
      machine-learning.enable = cfg.enableMachineLearning;

      # Settings
      settings = {
        # Add any Immich-specific settings here
        # Check Immich docs for available options
      };
    };

    # Ensure media directory exists with correct permissions
    systemd.tmpfiles.rules = [
      "d ${cfg.mediaLocation} 0755 immich immich -"
    ] ++ (map (path: "d ${path} 0755 immich immich -") cfg.externalLibraryPaths);

    # Backup Immich data
    services.backup.paths = mkIf config.services.backup.enable [
      cfg.mediaLocation
      "/var/lib/immich"  # Database and config
    ];

    # Memory recommendation
    warnings = mkIf (cfg.enableMachineLearning && config.hardware.cpu.intel.updateMicrocode or false) [
      "Immich ML features benefit from GPU acceleration. Consider enabling CUDA or OpenCL."
    ];

    # Reverse proxy example (Caddy)
    # services.caddy.virtualHosts."${cfg.domain}".extraConfig = ''
    #   reverse_proxy localhost:${toString cfg.port}
    # '';
  };
}