os/modules/paperless/default.nix

{
  flake,
  lib,
  config,
  pkgs,
  ...
}:
with lib; let
  psCfg = config.pub-solar;
  xdg = config.home-manager.users."${psCfg.user.name}".xdg;

  dataDir = "${xdg.dataHome}/Paperless";
  consumptionDir = "/home/${psCfg.user.name}/.local/share/scandir";
  scannerDefaultDevice = "hp3900:libusb:005:004";
in {
  services.paperless = {
    enable = true;
    user = psCfg.user.name;
    consumptionDir = consumptionDir;
    dataDir = dataDir;
    address = "paperless.local";
    extraConfig = {
      PAPERLESS_OCR_LANGUAGE = "nld+deu";
      PAPERLESS_ADMIN_USER = psCfg.user.name;
      PAPERLESS_AUTO_LOGIN_USERNAME = psCfg.user.name;
      PAPERLESS_URL = "http://paperless.local";
    };
  };

  users.users."${psCfg.user.name}".packages = with pkgs; [
    scan2paperless
    sane-backends
    python310Packages.img2pdf
  ];

  home-manager.users."${psCfg.user.name}" = {
    home.sessionVariables = {
      SCANNER_DEFAULT_DEVICE = scannerDefaultDevice;
      SCANNER_OUTPUT_DIR = consumptionDir;
    };
    systemd.user.sessionVariables = {
      SCANNER_DEFAULT_DEVICE = scannerDefaultDevice;
      SCANNER_OUTPUT_DIR = consumptionDir;
    };
  };

  networking.hosts = flake.self.lib.addLocalHostname ["paperless.local"];
  services.caddy.extraConfig = ''
    paperless.local:80 {
      request_header Host localhost:${builtins.toString config.services.paperless.port}
      reverse_proxy localhost:${builtins.toString config.services.paperless.port}
    }
  '';
}